Add m-esr52 at 52.6.0

30 files changed, 6319 insertions, 0 deletions

diff --git a/build/autoconf/acwinpaths.m4 b/build/autoconf/acwinpaths.m4
new file mode 100644
index 000000000..ad9c754bb
--- /dev/null
+++ b/build/autoconf/acwinpaths.m4
@@ -0,0 +1,31 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+define(GENERATE_SUB_ABS, [
+define([AC_OUTPUT_FILES_SUB1], [
+patsubst($@, [/\*)], [/* | ?:/*)])
+])
+])
+GENERATE_SUB_ABS(defn([AC_OUTPUT_FILES]))
+
+define(GENERATE_SUB_NOSPLIT, [
+define([AC_OUTPUT_FILES], [
+patsubst($@, [-e "s%:% \$ac_given_srcdir/%g"], [])
+])
+])
+GENERATE_SUB_NOSPLIT(defn([AC_OUTPUT_FILES_SUB1]))
+
+define(GENERATE_HEADER_NOSPLIT, [
+define([AC_OUTPUT_HEADER], [
+patsubst($@, [-e "s%:% \$ac_given_srcdir/%g"], [])
+])
+])
+GENERATE_HEADER_NOSPLIT(defn([AC_OUTPUT_HEADER]))
+
+define(GENERATE_SUBDIRS_ABS, [
+define([AC_OUTPUT_SUBDIRS], [
+patsubst($@, [/\*)], [/* | ?:/*)])
+])
+])
+GENERATE_SUBDIRS_ABS(defn([AC_OUTPUT_SUBDIRS]))
diff --git a/build/autoconf/alloc.m4 b/build/autoconf/alloc.m4
new file mode 100644
index 000000000..6a0772f58
--- /dev/null
+++ b/build/autoconf/alloc.m4
@@ -0,0 +1,51 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dnl Check for the existence of various allocation headers/functions
+AC_DEFUN([MOZ_CHECK_ALLOCATOR],[
+
+MALLOC_HEADERS="malloc.h malloc_np.h malloc/malloc.h sys/malloc.h"
+MALLOC_H=
+
+for file in $MALLOC_HEADERS; do
+  MOZ_CHECK_HEADER($file, [MALLOC_H=$file])
+  if test "$MALLOC_H" != ""; then
+    AC_DEFINE_UNQUOTED(MALLOC_H, <$MALLOC_H>)
+    break
+  fi
+done
+
+AC_CHECK_FUNCS(strndup posix_memalign memalign)
+
+AC_CHECK_FUNCS(malloc_usable_size)
+MALLOC_USABLE_SIZE_CONST_PTR=const
+if test -n "$HAVE_MALLOC_H"; then
+  AC_MSG_CHECKING([whether malloc_usable_size definition can use const argument])
+  AC_TRY_COMPILE([#include <malloc.h>
+                  #include <stddef.h>
+                  size_t malloc_usable_size(const void *ptr);],
+                  [return malloc_usable_size(0);],
+                  AC_MSG_RESULT([yes]),
+                  AC_MSG_RESULT([no])
+                  MALLOC_USABLE_SIZE_CONST_PTR=)
+fi
+AC_DEFINE_UNQUOTED([MALLOC_USABLE_SIZE_CONST_PTR],[$MALLOC_USABLE_SIZE_CONST_PTR])
+
+
+dnl In newer bionic headers, valloc is built but not defined,
+dnl so we check more carefully here.
+AC_MSG_CHECKING([for valloc in malloc.h])
+AC_EGREP_HEADER(valloc, malloc.h,
+                AC_DEFINE(HAVE_VALLOC)
+                AC_MSG_RESULT([yes]),
+                AC_MSG_RESULT([no]))
+
+AC_MSG_CHECKING([for valloc in unistd.h])
+AC_EGREP_HEADER(valloc, unistd.h,
+                AC_DEFINE(HAVE_VALLOC)
+                AC_MSG_RESULT([yes]),
+                AC_MSG_RESULT([no]))
+
+
+])
diff --git a/build/autoconf/altoptions.m4 b/build/autoconf/altoptions.m4
new file mode 100644
index 000000000..bf6c3e6cf
--- /dev/null
+++ b/build/autoconf/altoptions.m4
@@ -0,0 +1,95 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dnl altoptions.m4 - An alternative way of specifying command-line options.
+dnl    These macros are needed to support a menu-based configurator.
+dnl    This file also includes the macro, AM_READ_MYCONFIG, for reading
+dnl    the 'myconfig.m4' file.
+
+dnl Send comments, improvements, bugs to Steve Lamm (slamm@netscape.com).
+
+
+dnl MOZ_ARG_ENABLE_BOOL(           NAME, HELP, IF-YES [, IF-NO [, ELSE]])
+dnl MOZ_ARG_DISABLE_BOOL(          NAME, HELP, IF-NO [, IF-YES [, ELSE]])
+dnl MOZ_ARG_ENABLE_STRING(         NAME, HELP, IF-SET [, ELSE])
+dnl MOZ_ARG_ENABLE_BOOL_OR_STRING( NAME, HELP, IF-YES, IF-NO, IF-SET[, ELSE]]])
+dnl MOZ_ARG_WITH_BOOL(             NAME, HELP, IF-YES [, IF-NO [, ELSE])
+dnl MOZ_ARG_WITHOUT_BOOL(          NAME, HELP, IF-NO [, IF-YES [, ELSE])
+dnl MOZ_ARG_WITH_STRING(           NAME, HELP, IF-SET [, ELSE])
+dnl MOZ_ARG_HEADER(Comment)
+dnl MOZ_READ_MYCONFIG() - Read in 'myconfig.sh' file
+
+define([MOZ_DIVERSION_ARGS], 12)
+
+AC_DEFUN([MOZ_ARG],[dnl
+AC_DIVERT_PUSH(MOZ_DIVERSION_ARGS)dnl
+    '$1',
+AC_DIVERT_POP()dnl
+])
+AC_DEFUN([MOZ_AC_ARG_ENABLE],[MOZ_ARG([--enable-]translit([$1],[_],[-]))AC_ARG_ENABLE([$1], [$2], [$3], [$4])])
+AC_DEFUN([MOZ_AC_ARG_WITH],[MOZ_ARG([--with-]translit([$1],[_],[-]))AC_ARG_WITH([$1], [$2], [$3], [$4])])
+
+dnl MOZ_TWO_STRING_TEST(NAME, VAL, STR1, IF-STR1, STR2, IF-STR2 [, ELSE])
+AC_DEFUN([MOZ_TWO_STRING_TEST],
+[if test "[$2]" = "[$3]"; then
+    ifelse([$4], , :, [$4])
+  elif test "[$2]" = "[$5]"; then
+    ifelse([$6], , :, [$6])
+  else
+    ifelse([$7], ,
+      [AC_MSG_ERROR([Option, [$1], does not take an argument ([$2]).])],
+      [$7])
+  fi])
+
+dnl MOZ_ARG_ENABLE_BOOL(NAME, HELP, IF-YES [, IF-NO [, ELSE]])
+AC_DEFUN([MOZ_ARG_ENABLE_BOOL],
+[MOZ_AC_ARG_ENABLE([$1], [$2],
+ [MOZ_TWO_STRING_TEST([$1], [$enableval], yes, [$3], no, [$4])],
+ [$5])])
+
+dnl MOZ_ARG_DISABLE_BOOL(NAME, HELP, IF-NO [, IF-YES [, ELSE]])
+AC_DEFUN([MOZ_ARG_DISABLE_BOOL],
+[MOZ_AC_ARG_ENABLE([$1], [$2],
+ [MOZ_TWO_STRING_TEST([$1], [$enableval], no, [$3], yes, [$4])],
+ [$5])])
+
+dnl MOZ_ARG_ENABLE_STRING(NAME, HELP, IF-SET [, ELSE])
+AC_DEFUN([MOZ_ARG_ENABLE_STRING],
+[MOZ_AC_ARG_ENABLE([$1], [$2], [$3], [$4])])
+
+dnl MOZ_ARG_ENABLE_BOOL_OR_STRING(NAME, HELP, IF-YES, IF-NO, IF-SET[, ELSE]]])
+AC_DEFUN([MOZ_ARG_ENABLE_BOOL_OR_STRING],
+[ifelse([$5], , 
+ [errprint([Option, $1, needs an "IF-SET" argument.
+])
+  m4exit(1)],
+ [MOZ_AC_ARG_ENABLE([$1], [$2],
+  [MOZ_TWO_STRING_TEST([$1], [$enableval], yes, [$3], no, [$4], [$5])],
+  [$6])])])
+
+dnl MOZ_ARG_WITH_BOOL(NAME, HELP, IF-YES [, IF-NO [, ELSE])
+AC_DEFUN([MOZ_ARG_WITH_BOOL],
+[MOZ_AC_ARG_WITH([$1], [$2],
+ [MOZ_TWO_STRING_TEST([$1], [$withval], yes, [$3], no, [$4])],
+ [$5])])
+
+dnl MOZ_ARG_WITHOUT_BOOL(NAME, HELP, IF-NO [, IF-YES [, ELSE])
+AC_DEFUN([MOZ_ARG_WITHOUT_BOOL],
+[MOZ_AC_ARG_WITH([$1], [$2],
+ [MOZ_TWO_STRING_TEST([$1], [$withval], no, [$3], yes, [$4])],
+ [$5])])
+
+dnl MOZ_ARG_WITH_STRING(NAME, HELP, IF-SET [, ELSE])
+AC_DEFUN([MOZ_ARG_WITH_STRING],
+[MOZ_AC_ARG_WITH([$1], [$2], [$3], [$4])])
+
+dnl MOZ_ARG_HEADER(Comment)
+dnl This is used by webconfig to group options
+define(MOZ_ARG_HEADER, [# $1])
+
+dnl MOZ_READ_MYCONFIG() - Read in 'myconfig.sh' file
+AC_DEFUN([MOZ_READ_MOZCONFIG],
+[AC_REQUIRE([AC_INIT_BINSH])dnl
+. ./old-configure.vars
+])
diff --git a/build/autoconf/android.m4 b/build/autoconf/android.m4
new file mode 100644
index 000000000..4ab6d5a82
--- /dev/null
+++ b/build/autoconf/android.m4
@@ -0,0 +1,376 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+AC_DEFUN([MOZ_ANDROID_NDK],
+[
+
+MOZ_ARG_WITH_STRING(android-cxx-stl,
+[  --with-android-cxx-stl=VALUE
+                          use the specified C++ STL (libstdc++, libc++)],
+    android_cxx_stl=$withval,
+    android_cxx_stl=libc++)
+
+case "$target" in
+*-android*|*-linuxandroid*)
+    dnl $android_platform will be set for us by Python configure.
+    CPPFLAGS="-idirafter $android_platform/usr/include $CPPFLAGS"
+    CFLAGS="-fno-short-enums -fno-exceptions $CFLAGS"
+    CXXFLAGS="-fno-short-enums -fno-exceptions $CXXFLAGS"
+    ASFLAGS="-idirafter $android_platform/usr/include -DANDROID $ASFLAGS"
+
+    dnl Add --allow-shlib-undefined, because libGLESv2 links to an
+    dnl undefined symbol (present on the hardware, just not in the
+    dnl NDK.)
+    LDFLAGS="-L$android_platform/usr/lib -Wl,-rpath-link=$android_platform/usr/lib --sysroot=$android_platform -Wl,--allow-shlib-undefined $LDFLAGS"
+    dnl Add -llog by default, since we use it all over the place.
+    LIBS="-llog $LIBS"
+    ANDROID_PLATFORM="${android_platform}"
+
+    AC_DEFINE(ANDROID)
+    AC_SUBST(ANDROID_PLATFORM)
+
+    ;;
+esac
+
+])
+
+AC_DEFUN([MOZ_ANDROID_CPU_ARCH],
+[
+
+if test "$OS_TARGET" = "Android"; then
+    case "${CPU_ARCH}-${MOZ_ARCH}" in
+    arm-armv7*)
+        ANDROID_CPU_ARCH=armeabi-v7a
+        ;;
+    arm-*)
+        ANDROID_CPU_ARCH=armeabi
+        ;;
+    x86-*)
+        ANDROID_CPU_ARCH=x86
+        ;;
+    mips32-*) # When target_cpu is mipsel, CPU_ARCH is mips32
+        ANDROID_CPU_ARCH=mips
+        ;;
+    aarch64-*)
+        ANDROID_CPU_ARCH=arm64-v8a
+        ;;
+    esac
+
+    AC_SUBST(ANDROID_CPU_ARCH)
+fi
+])
+
+AC_DEFUN([MOZ_ANDROID_STLPORT],
+[
+
+if test "$OS_TARGET" = "Android"; then
+    cpu_arch_dir="$ANDROID_CPU_ARCH"
+    # NDK r12 removed the arm/thumb library split and just made everything
+    # thumb by default.  Attempt to compensate.
+    if test "$MOZ_THUMB2" = 1 -a -d "$cpu_arch_dir/thumb"; then
+        cpu_arch_dir="$cpu_arch_dir/thumb"
+    fi
+
+    if test -z "$STLPORT_CPPFLAGS$STLPORT_LIBS"; then
+        case "$android_cxx_stl" in
+        libstdc++)
+            # android-ndk-r8b and later
+            ndk_base="$android_ndk/sources/cxx-stl/gnu-libstdc++/$android_gnu_compiler_version"
+            ndk_libs_include="$ndk_base/libs/$ANDROID_CPU_ARCH"
+            ndk_libs="$ndk_base/libs/$cpu_arch_dir"
+            ndk_include="$ndk_base/include"
+
+            if ! test -e "$ndk_libs/libgnustl_static.a"; then
+                AC_MSG_ERROR([Couldn't find path to gnu-libstdc++ in the android ndk])
+            fi
+
+            STLPORT_LIBS="-L$ndk_libs -lgnustl_static"
+            STLPORT_CPPFLAGS="-I$ndk_include -I$ndk_include/backward -I$ndk_libs_include/include"
+            ;;
+        libc++)
+            # android-ndk-r8b and later
+            ndk_base="$android_ndk/sources/cxx-stl"
+            cxx_base="$ndk_base/llvm-libc++"
+            cxx_libs="$cxx_base/libs/$cpu_arch_dir"
+            cxx_include="$cxx_base/libcxx/include"
+            cxxabi_base="$ndk_base/llvm-libc++abi"
+            cxxabi_include="$cxxabi_base/libcxxabi/include"
+
+            if ! test -e "$cxx_libs/libc++_static.a"; then
+                AC_MSG_ERROR([Couldn't find path to llvm-libc++ in the android ndk])
+            fi
+
+            STLPORT_LIBS="-L$cxx_libs -lc++_static"
+            # NDK r12 split the libc++ runtime libraries into pieces.
+            for lib in c++abi unwind android_support; do
+                if test -e "$cxx_libs/lib${lib}.a"; then
+                     STLPORT_LIBS="$STLPORT_LIBS -l${lib}"
+                fi
+            done
+            # Add android/support/include/ for prototyping long double math
+            # functions, locale-specific C library functions, multibyte support,
+            # etc.
+            STLPORT_CPPFLAGS="-I$android_ndk/sources/android/support/include -I$cxx_include -I$cxxabi_include"
+            ;;
+        *)
+            AC_MSG_ERROR([Bad value for --enable-android-cxx-stl])
+            ;;
+        esac
+    fi
+    CXXFLAGS="$CXXFLAGS $STLPORT_CPPFLAGS"
+fi
+MOZ_ANDROID_CXX_STL=$android_cxx_stl
+AC_SUBST([MOZ_ANDROID_CXX_STL])
+AC_SUBST([STLPORT_LIBS])
+
+])
+
+
+AC_DEFUN([concat],[$1$2$3$4])
+
+dnl Find a component of an AAR.
+dnl Arg 1: variable name to expose, like ANDROID_SUPPORT_V4_LIB.
+dnl Arg 2: path to component.
+dnl Arg 3: if non-empty, expect and require component.
+AC_DEFUN([MOZ_ANDROID_AAR_COMPONENT], [
+  ifelse([$3], ,
+  [
+    if test -e "$$1" ; then
+      AC_MSG_ERROR([Found unexpected exploded $1!])
+    fi
+  ],
+  [
+    AC_MSG_CHECKING([for $1])
+    $1="$2"
+    if ! test -e "$$1" ; then
+      AC_MSG_ERROR([Could not find required exploded $1!])
+    fi
+    AC_MSG_RESULT([$$1])
+    AC_SUBST($1)
+  ])
+])
+
+dnl Find an AAR and expose variables representing its exploded components.
+dnl AC_SUBSTs ANDROID_NAME_{AAR,AAR_RES,AAR_LIB,AAR_INTERNAL_LIB}.
+dnl Arg 1: name, like play-services-base
+dnl Arg 2: version, like 7.8.0
+dnl Arg 3: extras subdirectory, either android or google
+dnl Arg 4: package subdirectory, like com/google/android/gms
+dnl Arg 5: if non-empty, expect and require internal_impl JAR.
+dnl Arg 6: if non-empty, expect and require assets/ directory.
+AC_DEFUN([MOZ_ANDROID_AAR],[
+  define([local_aar_var_base], translit($1, [-a-z], [_A-Z]))
+  define([local_aar_var], concat(ANDROID_, local_aar_var_base, _AAR))
+  local_aar_var="$ANDROID_SDK_ROOT/extras/$3/m2repository/$4/$1/$2/$1-$2.aar"
+  AC_MSG_CHECKING([for $1 AAR])
+  if ! test -e "$local_aar_var" ; then
+    AC_MSG_ERROR([You must download the $1 AAR.  Run the Android SDK tool and install the Android and Google Support Repositories under Extras.  See https://developer.android.com/tools/extras/support-library.html for more info. (Looked for $local_aar_var)])
+  fi
+  AC_SUBST(local_aar_var)
+  AC_MSG_RESULT([$local_aar_var])
+
+  if ! $PYTHON -m mozbuild.action.explode_aar --destdir=$MOZ_BUILD_ROOT/dist/exploded-aar $local_aar_var ; then
+    AC_MSG_ERROR([Could not explode $local_aar_var!])
+  fi
+
+  define([root], $MOZ_BUILD_ROOT/dist/exploded-aar/$1-$2/)
+  MOZ_ANDROID_AAR_COMPONENT(concat(local_aar_var, _LIB), concat(root, $1-$2-classes.jar), REQUIRED)
+  MOZ_ANDROID_AAR_COMPONENT(concat(local_aar_var, _RES), concat(root, res), REQUIRED)
+  MOZ_ANDROID_AAR_COMPONENT(concat(local_aar_var, _INTERNAL_LIB), concat(root, libs/$1-$2-internal_impl-$2.jar), $5)
+  MOZ_ANDROID_AAR_COMPONENT(concat(local_aar_var, _ASSETS), concat(root, assets), $6)
+])
+
+AC_DEFUN([MOZ_ANDROID_GOOGLE_PLAY_SERVICES],
+[
+
+if test -n "$MOZ_NATIVE_DEVICES" ; then
+    AC_SUBST(MOZ_NATIVE_DEVICES)
+
+    MOZ_ANDROID_AAR(play-services-base, $ANDROID_GOOGLE_PLAY_SERVICES_VERSION, google, com/google/android/gms)
+    MOZ_ANDROID_AAR(play-services-basement, $ANDROID_GOOGLE_PLAY_SERVICES_VERSION, google, com/google/android/gms)
+    MOZ_ANDROID_AAR(play-services-cast, $ANDROID_GOOGLE_PLAY_SERVICES_VERSION, google, com/google/android/gms)
+    MOZ_ANDROID_AAR(mediarouter-v7, $ANDROID_SUPPORT_LIBRARY_VERSION, android, com/android/support, REQUIRED_INTERNAL_IMPL)
+fi
+
+])
+
+AC_DEFUN([MOZ_ANDROID_GOOGLE_CLOUD_MESSAGING],
+[
+
+if test -n "$MOZ_ANDROID_GCM" ; then
+    MOZ_ANDROID_AAR(play-services-base, $ANDROID_GOOGLE_PLAY_SERVICES_VERSION, google, com/google/android/gms)
+    MOZ_ANDROID_AAR(play-services-basement, $ANDROID_GOOGLE_PLAY_SERVICES_VERSION, google, com/google/android/gms)
+    MOZ_ANDROID_AAR(play-services-gcm, $ANDROID_GOOGLE_PLAY_SERVICES_VERSION, google, com/google/android/gms)
+    MOZ_ANDROID_AAR(play-services-measurement, $ANDROID_GOOGLE_PLAY_SERVICES_VERSION, google, com/google/android/gms)
+fi
+
+])
+
+AC_DEFUN([MOZ_ANDROID_INSTALL_TRACKING],
+[
+
+if test -n "$MOZ_INSTALL_TRACKING"; then
+    AC_SUBST(MOZ_INSTALL_TRACKING)
+    MOZ_ANDROID_AAR(play-services-ads, $ANDROID_GOOGLE_PLAY_SERVICES_VERSION, google, com/google/android/gms)
+    MOZ_ANDROID_AAR(play-services-basement, $ANDROID_GOOGLE_PLAY_SERVICES_VERSION, google, com/google/android/gms)
+fi
+
+])
+
+dnl Configure an Android SDK.
+dnl Arg 1: target SDK version, like 23.
+dnl Arg 2: list of build-tools versions, like "23.0.3 23.0.1".
+AC_DEFUN([MOZ_ANDROID_SDK],
+[
+
+MOZ_ARG_WITH_STRING(android-sdk,
+[  --with-android-sdk=DIR
+                          location where the Android SDK can be found (like ~/.mozbuild/android-sdk-linux)],
+    android_sdk_root=$withval)
+
+android_sdk_root=${withval%/platforms/android-*}
+
+case "$target" in
+*-android*|*-linuxandroid*)
+    if test -z "$android_sdk_root" ; then
+        AC_MSG_ERROR([You must specify --with-android-sdk=/path/to/sdk when targeting Android.])
+    fi
+
+    # We were given an old-style
+    # --with-android-sdk=/path/to/sdk/platforms/android-*.  We could warn, but
+    # we'll get compliance by forcing the issue.
+    if test -e "$withval"/source.properties ; then
+        AC_MSG_ERROR([Including platforms/android-* in --with-android-sdk arguments is deprecated.  Use --with-android-sdk=$android_sdk_root.])
+    fi
+
+    android_target_sdk=$1
+    AC_MSG_CHECKING([for Android SDK platform version $android_target_sdk])
+    android_sdk=$android_sdk_root/platforms/android-$android_target_sdk
+    if ! test -e "$android_sdk/source.properties" ; then
+        AC_MSG_ERROR([You must download Android SDK platform version $android_target_sdk.  Try |mach bootstrap|.  (Looked for $android_sdk)])
+    fi
+    AC_MSG_RESULT([$android_sdk])
+
+    AC_MSG_CHECKING([for Android build-tools])
+    android_build_tools_base="$android_sdk_root"/build-tools
+    android_build_tools_version=""
+    for version in $2; do
+        android_build_tools="$android_build_tools_base"/$version
+        if test -d "$android_build_tools" -a -f "$android_build_tools/aapt"; then
+            android_build_tools_version=$version
+            AC_MSG_RESULT([$android_build_tools])
+            break
+        fi
+    done
+    if test "$android_build_tools_version" = ""; then
+        version=$(echo $2 | cut -d" " -f1)
+        AC_MSG_ERROR([You must install the Android build-tools version $version.  Try |mach bootstrap|.  (Looked for "$android_build_tools_base"/$version)])
+    fi
+
+    MOZ_PATH_PROG(ZIPALIGN, zipalign, :, [$android_build_tools])
+    MOZ_PATH_PROG(DX, dx, :, [$android_build_tools])
+    MOZ_PATH_PROG(AAPT, aapt, :, [$android_build_tools])
+    MOZ_PATH_PROG(AIDL, aidl, :, [$android_build_tools])
+    if test -z "$ZIPALIGN" -o "$ZIPALIGN" = ":"; then
+      AC_MSG_ERROR([The program zipalign was not found.  Try |mach bootstrap|.])
+    fi
+    if test -z "$DX" -o "$DX" = ":"; then
+      AC_MSG_ERROR([The program dx was not found.  Try |mach bootstrap|.])
+    fi
+    if test -z "$AAPT" -o "$AAPT" = ":"; then
+      AC_MSG_ERROR([The program aapt was not found.  Try |mach bootstrap|.])
+    fi
+    if test -z "$AIDL" -o "$AIDL" = ":"; then
+      AC_MSG_ERROR([The program aidl was not found.  Try |mach bootstrap|.])
+    fi
+
+    android_platform_tools="$android_sdk_root"/platform-tools
+    AC_MSG_CHECKING([for Android platform-tools])
+    if test -d "$android_platform_tools" -a -f "$android_platform_tools/adb"; then
+        AC_MSG_RESULT([$android_platform_tools])
+    else
+        AC_MSG_ERROR([You must install the Android platform-tools.  Try |mach bootstrap|.  (Looked for $android_platform_tools)])
+    fi
+
+    MOZ_PATH_PROG(ADB, adb, :, [$android_platform_tools])
+    if test -z "$ADB" -o "$ADB" = ":"; then
+      AC_MSG_ERROR([The program adb was not found.  Try |mach bootstrap|.])
+    fi
+
+    android_tools="$android_sdk_root"/tools
+    AC_MSG_CHECKING([for Android tools])
+    if test -d "$android_tools" -a -f "$android_tools/emulator"; then
+        AC_MSG_RESULT([$android_tools])
+    else
+        AC_MSG_ERROR([You must install the Android tools.  Try |mach bootstrap|.  (Looked for $android_tools)])
+    fi
+
+    MOZ_PATH_PROG(EMULATOR, emulator, :, [$android_tools])
+    if test -z "$EMULATOR" -o "$EMULATOR" = ":"; then
+      AC_MSG_ERROR([The program emulator was not found.  Try |mach bootstrap|.])
+    fi
+
+    ANDROID_TARGET_SDK="${android_target_sdk}"
+    ANDROID_SDK="${android_sdk}"
+    ANDROID_SDK_ROOT="${android_sdk_root}"
+    ANDROID_TOOLS="${android_tools}"
+    ANDROID_BUILD_TOOLS_VERSION="$android_build_tools_version"
+    AC_DEFINE_UNQUOTED(ANDROID_TARGET_SDK,$ANDROID_TARGET_SDK)
+    AC_SUBST(ANDROID_TARGET_SDK)
+    AC_SUBST(ANDROID_SDK_ROOT)
+    AC_SUBST(ANDROID_SDK)
+    AC_SUBST(ANDROID_TOOLS)
+    AC_SUBST(ANDROID_BUILD_TOOLS_VERSION)
+
+    MOZ_ANDROID_AAR(customtabs, $ANDROID_SUPPORT_LIBRARY_VERSION, android, com/android/support)
+    MOZ_ANDROID_AAR(appcompat-v7, $ANDROID_SUPPORT_LIBRARY_VERSION, android, com/android/support)
+    MOZ_ANDROID_AAR(support-vector-drawable, $ANDROID_SUPPORT_LIBRARY_VERSION, android, com/android/support)
+    MOZ_ANDROID_AAR(animated-vector-drawable, $ANDROID_SUPPORT_LIBRARY_VERSION, android, com/android/support)
+    MOZ_ANDROID_AAR(cardview-v7, $ANDROID_SUPPORT_LIBRARY_VERSION, android, com/android/support)
+    MOZ_ANDROID_AAR(design, $ANDROID_SUPPORT_LIBRARY_VERSION, android, com/android/support)
+    MOZ_ANDROID_AAR(recyclerview-v7, $ANDROID_SUPPORT_LIBRARY_VERSION, android, com/android/support)
+    MOZ_ANDROID_AAR(support-v4, $ANDROID_SUPPORT_LIBRARY_VERSION, android, com/android/support, REQUIRED_INTERNAL_IMPL)
+    MOZ_ANDROID_AAR(palette-v7, $ANDROID_SUPPORT_LIBRARY_VERSION, android, com/android/support)
+
+    ANDROID_SUPPORT_ANNOTATIONS_JAR="$ANDROID_SDK_ROOT/extras/android/m2repository/com/android/support/support-annotations/$ANDROID_SUPPORT_LIBRARY_VERSION/support-annotations-$ANDROID_SUPPORT_LIBRARY_VERSION.jar"
+    AC_MSG_CHECKING([for support-annotations JAR])
+    if ! test -e $ANDROID_SUPPORT_ANNOTATIONS_JAR ; then
+        AC_MSG_ERROR([You must download the support-annotations lib.  Run the Android SDK tool and install the Android Support Repository under Extras.  See https://developer.android.com/tools/extras/support-library.html for more info. (looked for $ANDROID_SUPPORT_ANNOTATIONS_JAR)])
+    fi
+    AC_MSG_RESULT([$ANDROID_SUPPORT_ANNOTATIONS_JAR])
+    AC_SUBST(ANDROID_SUPPORT_ANNOTATIONS_JAR)
+    ANDROID_SUPPORT_ANNOTATIONS_JAR_LIB=$ANDROID_SUPPORT_ANNOTATIONS_JAR
+    AC_SUBST(ANDROID_SUPPORT_ANNOTATIONS_JAR_LIB)
+    ;;
+esac
+
+MOZ_ARG_WITH_STRING(android-min-sdk,
+[  --with-android-min-sdk=[VER]     Impose a minimum Firefox for Android SDK version],
+[ MOZ_ANDROID_MIN_SDK_VERSION=$withval ])
+
+MOZ_ARG_WITH_STRING(android-max-sdk,
+[  --with-android-max-sdk=[VER]     Impose a maximum Firefox for Android SDK version],
+[ MOZ_ANDROID_MAX_SDK_VERSION=$withval ])
+
+if test -n "$MOZ_ANDROID_MIN_SDK_VERSION"; then
+    if test -n "$MOZ_ANDROID_MAX_SDK_VERSION"; then
+        if test $MOZ_ANDROID_MAX_SDK_VERSION -lt $MOZ_ANDROID_MIN_SDK_VERSION ; then
+            AC_MSG_ERROR([--with-android-max-sdk must be at least the value of --with-android-min-sdk.])
+        fi
+    fi
+
+    if test $MOZ_ANDROID_MIN_SDK_VERSION -gt $ANDROID_TARGET_SDK ; then
+        AC_MSG_ERROR([--with-android-min-sdk is expected to be less than $ANDROID_TARGET_SDK])
+    fi
+
+    AC_DEFINE_UNQUOTED(MOZ_ANDROID_MIN_SDK_VERSION, $MOZ_ANDROID_MIN_SDK_VERSION)
+    AC_SUBST(MOZ_ANDROID_MIN_SDK_VERSION)
+fi
+
+if test -n "$MOZ_ANDROID_MAX_SDK_VERSION"; then
+    AC_DEFINE_UNQUOTED(MOZ_ANDROID_MAX_SDK_VERSION, $MOZ_ANDROID_MAX_SDK_VERSION)
+    AC_SUBST(MOZ_ANDROID_MAX_SDK_VERSION)
+fi
+
+])
diff --git a/build/autoconf/arch.m4 b/build/autoconf/arch.m4
new file mode 100644
index 000000000..20af6ad7d
--- /dev/null
+++ b/build/autoconf/arch.m4
@@ -0,0 +1,254 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+AC_DEFUN([MOZ_ARCH_OPTS],
+[
+
+dnl ========================================================
+dnl = ARM toolchain tweaks
+dnl ========================================================
+
+MOZ_THUMB=toolchain-default
+MOZ_THUMB_INTERWORK=toolchain-default
+MOZ_FPU=toolchain-default
+MOZ_FLOAT_ABI=toolchain-default
+MOZ_SOFT_FLOAT=toolchain-default
+MOZ_ALIGN=toolchain-default
+
+MOZ_ARG_WITH_STRING(arch,
+[  --with-arch=[[type|toolchain-default]]
+                           Use specific CPU features (-march=type). Resets
+                           thumb, fpu, float-abi, etc. defaults when set],
+    if test -z "$GNU_CC"; then
+        AC_MSG_ERROR([--with-arch is not supported on non-GNU toolchains])
+    fi
+    MOZ_ARCH=$withval)
+
+if test -z "$MOZ_ARCH"; then
+    dnl Defaults
+    case "${CPU_ARCH}-${OS_TARGET}" in
+    arm-Android)
+        MOZ_THUMB=yes
+        MOZ_ARCH=armv7-a
+        MOZ_FPU=vfp
+        MOZ_FLOAT_ABI=softfp
+        MOZ_ALIGN=no
+        ;;
+    arm-Darwin)
+        MOZ_ARCH=toolchain-default
+        ;;
+    esac
+fi
+
+if test "$MOZ_ARCH" = "armv6" -a "$OS_TARGET" = "Android"; then
+   MOZ_FPU=vfp
+   MOZ_FLOAT_ABI=softfp
+fi
+
+MOZ_ARG_WITH_STRING(thumb,
+[  --with-thumb[[=yes|no|toolchain-default]]]
+[                          Use Thumb instruction set (-mthumb)],
+    if test -z "$GNU_CC"; then
+        AC_MSG_ERROR([--with-thumb is not supported on non-GNU toolchains])
+    fi
+    MOZ_THUMB=$withval)
+
+MOZ_ARG_WITH_STRING(thumb-interwork,
+[  --with-thumb-interwork[[=yes|no|toolchain-default]]
+                           Use Thumb/ARM instuctions interwork (-mthumb-interwork)],
+    if test -z "$GNU_CC"; then
+        AC_MSG_ERROR([--with-thumb-interwork is not supported on non-GNU toolchains])
+    fi
+    MOZ_THUMB_INTERWORK=$withval)
+
+MOZ_ARG_WITH_STRING(fpu,
+[  --with-fpu=[[type|toolchain-default]]
+                           Use specific FPU type (-mfpu=type)],
+    if test -z "$GNU_CC"; then
+        AC_MSG_ERROR([--with-fpu is not supported on non-GNU toolchains])
+    fi
+    MOZ_FPU=$withval)
+
+MOZ_ARG_WITH_STRING(float-abi,
+[  --with-float-abi=[[type|toolchain-default]]
+                           Use specific arm float ABI (-mfloat-abi=type)],
+    if test -z "$GNU_CC"; then
+        AC_MSG_ERROR([--with-float-abi is not supported on non-GNU toolchains])
+    fi
+    MOZ_FLOAT_ABI=$withval)
+
+MOZ_ARG_WITH_STRING(soft-float,
+[  --with-soft-float[[=yes|no|toolchain-default]]
+                           Use soft float library (-msoft-float)],
+    if test -z "$GNU_CC"; then
+        AC_MSG_ERROR([--with-soft-float is not supported on non-GNU toolchains])
+    fi
+    MOZ_SOFT_FLOAT=$withval)
+
+case "$MOZ_ARCH" in
+toolchain-default|"")
+    arch_flag=""
+    ;;
+*)
+    arch_flag="-march=$MOZ_ARCH"
+    ;;
+esac
+
+case "$MOZ_THUMB" in
+yes)
+    MOZ_THUMB2=1
+    thumb_flag="-mthumb"
+    ;;
+no)
+    MOZ_THUMB2=
+    thumb_flag="-marm"
+    ;;
+*)
+    _SAVE_CFLAGS="$CFLAGS"
+    CFLAGS="$arch_flag"
+    AC_TRY_COMPILE([],[return sizeof(__thumb2__);],
+        MOZ_THUMB2=1,
+        MOZ_THUMB2=)
+    CFLAGS="$_SAVE_CFLAGS"
+    thumb_flag=""
+    ;;
+esac
+
+if test "$MOZ_THUMB2" = 1; then
+    AC_DEFINE(MOZ_THUMB2)
+fi
+
+case "$MOZ_THUMB_INTERWORK" in
+yes)
+    thumb_interwork_flag="-mthumb-interwork"
+    ;;
+no)
+    thumb_interwork_flag="-mno-thumb-interwork"
+    ;;
+*) # toolchain-default
+    thumb_interwork_flag=""
+    ;;
+esac
+
+case "$MOZ_FPU" in
+toolchain-default|"")
+    fpu_flag=""
+    ;;
+*)
+    fpu_flag="-mfpu=$MOZ_FPU"
+    ;;
+esac
+
+case "$MOZ_FLOAT_ABI" in
+toolchain-default|"")
+    float_abi_flag=""
+    ;;
+*)
+    float_abi_flag="-mfloat-abi=$MOZ_FLOAT_ABI"
+    ;;
+esac
+
+case "$MOZ_SOFT_FLOAT" in
+yes)
+    soft_float_flag="-msoft-float"
+    ;;
+no)
+    soft_float_flag="-mno-soft-float"
+    ;;
+*) # toolchain-default
+    soft_float_flag=""
+    ;;
+esac
+
+case "$MOZ_ALIGN" in
+no)
+    align_flag="-mno-unaligned-access"
+    ;;
+yes)
+    align_flag="-munaligned-access"
+    ;;
+*)
+    align_flag=""
+    ;;
+esac
+
+if test -n "$align_flag"; then
+  _SAVE_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS $align_flag"
+  AC_MSG_CHECKING(whether alignment flag ($align_flag) is supported)
+  AC_TRY_COMPILE([],[],,align_flag="")
+  CFLAGS="$_SAVE_CFLAGS"
+fi
+
+dnl Use echo to avoid accumulating space characters
+all_flags=`echo $arch_flag $thumb_flag $thumb_interwork_flag $fpu_flag $float_abi_flag $soft_float_flag $align_flag`
+if test -n "$all_flags"; then
+    _SAVE_CFLAGS="$CFLAGS"
+    CFLAGS="$all_flags"
+    AC_MSG_CHECKING(whether the chosen combination of compiler flags ($all_flags) works)
+    AC_TRY_COMPILE([],[return 0;],
+        AC_MSG_RESULT([yes]),
+        AC_MSG_ERROR([no]))
+
+    CFLAGS="$_SAVE_CFLAGS $all_flags"
+    CXXFLAGS="$CXXFLAGS $all_flags"
+    ASFLAGS="$ASFLAGS $all_flags"
+    if test -n "$thumb_flag"; then
+        LDFLAGS="$LDFLAGS $thumb_flag"
+    fi
+fi
+
+AC_SUBST(MOZ_THUMB2)
+
+if test "$CPU_ARCH" = "arm"; then
+  NEON_FLAGS="-mfpu=neon"
+  AC_MSG_CHECKING(for ARM SIMD support in compiler)
+  # We try to link so that this also fails when
+  # building with LTO.
+  AC_TRY_LINK([],
+                 [asm("uqadd8 r1, r1, r2");],
+                 result="yes", result="no")
+  AC_MSG_RESULT("$result")
+  if test "$result" = "yes"; then
+      AC_DEFINE(HAVE_ARM_SIMD)
+      HAVE_ARM_SIMD=1
+  fi
+
+  AC_MSG_CHECKING(ARM version support in compiler)
+  dnl Determine the target ARM architecture (5 for ARMv5, v5T, v5E, etc.; 6 for ARMv6, v6K, etc.)
+  ARM_ARCH=`${CC-cc} ${CFLAGS} -dM -E - < /dev/null | sed -n 's/.*__ARM_ARCH_\([[0-9]][[0-9]]*\).*/\1/p'`
+  AC_MSG_RESULT("$ARM_ARCH")
+
+  AC_MSG_CHECKING(for ARM NEON support in compiler)
+  # We try to link so that this also fails when
+  # building with LTO.
+  AC_TRY_LINK([],
+                 [asm(".fpu neon\n vadd.i8 d0, d0, d0");],
+                 result="yes", result="no")
+  AC_MSG_RESULT("$result")
+  if test "$result" = "yes"; then
+      AC_DEFINE(HAVE_ARM_NEON)
+      HAVE_ARM_NEON=1
+
+      dnl We don't need to build NEON support if we're targetting a non-NEON device.
+      dnl This matches media/webrtc/trunk/webrtc/build/common.gypi.
+      if test -n "$ARM_ARCH"; then
+          if test "$ARM_ARCH" -lt 7; then
+              BUILD_ARM_NEON=
+          else
+              AC_DEFINE(BUILD_ARM_NEON)
+              BUILD_ARM_NEON=1
+          fi
+      fi
+  fi
+
+fi # CPU_ARCH = arm
+
+AC_SUBST(HAVE_ARM_SIMD)
+AC_SUBST(HAVE_ARM_NEON)
+AC_SUBST(BUILD_ARM_NEON)
+AC_SUBST(ARM_ARCH)
+AC_SUBST_LIST(NEON_FLAGS)
+
+])
diff --git a/build/autoconf/clang-plugin.m4 b/build/autoconf/clang-plugin.m4
new file mode 100644
index 000000000..22a48976d
--- /dev/null
+++ b/build/autoconf/clang-plugin.m4
@@ -0,0 +1,162 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+AC_DEFUN([MOZ_CONFIG_CLANG_PLUGIN], [
+
+MOZ_ARG_ENABLE_BOOL(clang-plugin,
+[  --enable-clang-plugin   Enable building with the mozilla clang plugin ],
+   ENABLE_CLANG_PLUGIN=1,
+   ENABLE_CLANG_PLUGIN= )
+if test -n "$ENABLE_CLANG_PLUGIN"; then
+    if test -z "${CLANG_CC}${CLANG_CL}"; then
+        AC_MSG_ERROR([Can't use clang plugin without clang.])
+    fi
+
+    AC_MSG_CHECKING([for llvm-config])
+    if test -z "$LLVMCONFIG"; then
+      if test -n "$CLANG_CL"; then
+          CXX_COMPILER="$(dirname "$CXX")/clang"
+      else
+          CXX_COMPILER="${CXX}"
+      fi
+      LLVMCONFIG=`$CXX_COMPILER -print-prog-name=llvm-config`
+    fi
+
+    if test -z "$LLVMCONFIG"; then
+      LLVMCONFIG=`which llvm-config`
+    fi
+
+    if test ! -x "$LLVMCONFIG"; then
+      AC_MSG_RESULT([not found])
+      AC_MSG_ERROR([Cannot find an llvm-config binary for building a clang plugin])
+    fi
+
+    AC_MSG_RESULT([$LLVMCONFIG])
+
+    if test -z "$LLVMCONFIG"; then
+        AC_MSG_ERROR([Cannot find an llvm-config binary for building a clang plugin])
+    fi
+    dnl For some reason the llvm-config downloaded from clang.llvm.org for clang3_8
+    dnl produces a -isysroot flag for a sysroot which might not ship when passed
+    dnl --cxxflags. We use sed to remove this argument so that builds work on OSX
+    LLVM_CXXFLAGS=`$LLVMCONFIG --cxxflags | sed -e 's/-isysroot [[^ ]]*//'`
+
+    dnl We are loaded into clang, so we don't need to link to very many things,
+    dnl we just need to link to clangASTMatchers because it is not used by clang
+    LLVM_LDFLAGS=`$LLVMCONFIG --ldflags | tr '\n' ' '`
+
+    if test "${HOST_OS_ARCH}" = "Darwin"; then
+        dnl We need to make sure that we use the symbols coming from the clang
+        dnl binary. In order to do this, we need to pass -flat_namespace and
+        dnl -undefined suppress to the linker. This makes sure that we link the
+        dnl symbols into the flat namespace provided by clang, and thus get
+        dnl access to all of the symbols which are undefined in our dylib as we
+        dnl are building it right now, and also that we don't fail the build
+        dnl due to undefined symbols (which will be provided by clang).
+        CLANG_LDFLAGS="-Wl,-flat_namespace -Wl,-undefined,suppress -lclangASTMatchers"
+    elif test "${HOST_OS_ARCH}" = "WINNT"; then
+        CLANG_LDFLAGS="clangASTMatchers.lib"
+    else
+        CLANG_LDFLAGS="-lclangASTMatchers"
+    fi
+
+    if test -n "$CLANG_CL"; then
+        dnl The llvm-config coming with clang-cl may give us arguments in the
+        dnl /ARG form, which in msys will be interpreted as a path name.  So we
+        dnl need to split the args and convert the leading slashes that we find
+        dnl into a dash.
+        LLVM_REPLACE_CXXFLAGS=''
+        for arg in $LLVM_CXXFLAGS; do
+            dnl The following expression replaces a leading slash with a dash.
+            dnl Also replace any backslashes with forward slash.
+            arg=`echo "$arg"|sed -e 's/^\//-/' -e 's/\\\\/\//g'`
+            LLVM_REPLACE_CXXFLAGS="$LLVM_REPLACE_CXXFLAGS $arg"
+        done
+        LLVM_CXXFLAGS="$LLVM_REPLACE_CXXFLAGS"
+
+        LLVM_REPLACE_LDFLAGS=''
+        for arg in $LLVM_LDFLAGS; do
+            dnl The following expression replaces a leading slash with a dash.
+            dnl Also replace any backslashes with forward slash.
+            arg=`echo "$arg"|sed -e 's/^\//-/' -e 's/\\\\/\//g'`
+            LLVM_REPLACE_LDFLAGS="$LLVM_REPLACE_LDFLAGS $arg"
+        done
+        LLVM_LDFLAGS="$LLVM_REPLACE_LDFLAGS"
+
+        CLANG_REPLACE_LDFLAGS=''
+        for arg in $CLANG_LDFLAGS; do
+            dnl The following expression replaces a leading slash with a dash.
+            dnl Also replace any backslashes with forward slash.
+            arg=`echo "$arg"|sed -e 's/^\//-/' -e 's/\\\\/\//g'`
+            CLANG_REPLACE_LDFLAGS="$CLANG_REPLACE_LDFLAGS $arg"
+        done
+        CLANG_LDFLAGS="$CLANG_REPLACE_LDFLAGS"
+    fi
+
+    dnl Check for the new ASTMatcher API names.  Since this happened in the
+    dnl middle of the 3.8 cycle, our CLANG_VERSION_FULL is impossible to use
+    dnl correctly, so we have to detect this at configure time.
+    AC_CACHE_CHECK(for new ASTMatcher API,
+                   ac_cv_have_new_ASTMatcher_api,
+        [
+            AC_LANG_SAVE
+            AC_LANG_CPLUSPLUS
+            _SAVE_CXXFLAGS="$CXXFLAGS"
+            _SAVE_CXX="$CXX"
+            _SAVE_MACOSX_DEPLOYMENT_TARGET="$MACOSX_DEPLOYMENT_TARGET"
+            unset MACOSX_DEPLOYMENT_TARGET
+            CXXFLAGS="${LLVM_CXXFLAGS}"
+            CXX="${HOST_CXX}"
+            AC_TRY_COMPILE([#include "clang/ASTMatchers/ASTMatchers.h"],
+                           [clang::ast_matchers::cxxConstructExpr();],
+                           ac_cv_have_new_ASTMatcher_names="yes",
+                           ac_cv_have_new_ASTMatcher_names="no")
+            CXX="$_SAVE_CXX"
+            CXXFLAGS="$_SAVE_CXXFLAGS"
+            export MACOSX_DEPLOYMENT_TARGET="$_SAVE_MACOSX_DEPLOYMENT_TARGET"
+            AC_LANG_RESTORE
+        ])
+    if test "$ac_cv_have_new_ASTMatcher_names" = "yes"; then
+      LLVM_CXXFLAGS="$LLVM_CXXFLAGS -DHAVE_NEW_ASTMATCHER_NAMES"
+    fi
+
+    dnl Check if we can compile has(ignoringParenImpCasts()) because
+    dnl before 3.9 that ignoringParenImpCasts was done internally by "has".
+    dnl See https://www.mail-archive.com/cfe-commits@lists.llvm.org/msg25234.html
+    AC_CACHE_CHECK(for has with ignoringParenImpCasts,
+                   ac_cv_has_accepts_ignoringParenImpCasts,
+        [
+            AC_LANG_SAVE
+            AC_LANG_CPLUSPLUS
+            _SAVE_CXXFLAGS="$CXXFLAGS"
+            _SAVE_CXX="$CXX"
+            _SAVE_MACOSX_DEPLOYMENT_TARGET="$MACOSX_DEPLOYMENT_TARGET"
+            unset MACOSX_DEPLOYMENT_TARGET
+            CXXFLAGS="${LLVM_CXXFLAGS}"
+            CXX="${HOST_CXX}"
+            AC_TRY_COMPILE([#include "clang/ASTMatchers/ASTMatchers.h"],
+                           [using namespace clang::ast_matchers;
+                            expr(has(ignoringParenImpCasts(declRefExpr())));
+                           ],
+                           ac_cv_has_accepts_ignoringParenImpCasts="yes",
+                           ac_cv_has_accepts_ignoringParenImpCasts="no")
+            CXX="$_SAVE_CXX"
+            CXXFLAGS="$_SAVE_CXXFLAGS"
+            export MACOSX_DEPLOYMENT_TARGET="$_SAVE_MACOSX_DEPLOYMENT_TARGET"
+            AC_LANG_RESTORE
+        ])
+    if test "$ac_cv_has_accepts_ignoringParenImpCasts" = "yes"; then
+      LLVM_CXXFLAGS="$LLVM_CXXFLAGS -DHAS_ACCEPTS_IGNORINGPARENIMPCASTS"
+    fi
+
+    AC_DEFINE(MOZ_CLANG_PLUGIN)
+fi
+
+AC_SUBST(LLVM_CXXFLAGS)
+AC_SUBST(LLVM_LDFLAGS)
+AC_SUBST(CLANG_LDFLAGS)
+
+AC_SUBST(ENABLE_CLANG_PLUGIN)
+
+])
diff --git a/build/autoconf/codeset.m4 b/build/autoconf/codeset.m4
new file mode 100644
index 000000000..3a25c4296
--- /dev/null
+++ b/build/autoconf/codeset.m4
@@ -0,0 +1,25 @@
+# codeset.m4 serial AM1 (gettext-0.10.40)
+dnl Copyright (C) 2000-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([AM_LANGINFO_CODESET],
+[
+  AC_CACHE_CHECK([for nl_langinfo and CODESET], am_cv_langinfo_codeset,
+    [AC_TRY_LINK([#include <langinfo.h>],
+      [char* cs = nl_langinfo(CODESET);],
+      am_cv_langinfo_codeset=yes,
+      am_cv_langinfo_codeset=no)
+    ])
+  if test $am_cv_langinfo_codeset = yes; then
+    AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
+      [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
+      HAVE_LANGINFO_CODESET=1
+  fi
+  AC_SUBST(HAVE_LANGINFO_CODESET)
+])
diff --git a/build/autoconf/compiler-opts.m4 b/build/autoconf/compiler-opts.m4
new file mode 100644
index 000000000..5e495e107
--- /dev/null
+++ b/build/autoconf/compiler-opts.m4
@@ -0,0 +1,316 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dnl Add compiler specific options
+
+AC_DEFUN([MOZ_DEFAULT_COMPILER],
+[
+dnl set DEVELOPER_OPTIONS early; MOZ_DEFAULT_COMPILER is usually the first non-setup directive
+  if test -z "$MOZILLA_OFFICIAL"; then
+    DEVELOPER_OPTIONS=1
+  fi
+  MOZ_ARG_ENABLE_BOOL(release,
+  [  --enable-release        Build with more conservative, release engineering-oriented options.
+                          This may slow down builds.],
+      DEVELOPER_OPTIONS=,
+      DEVELOPER_OPTIONS=1)
+
+dnl Default to MSVC for win32 and gcc-4.2 for darwin
+dnl ==============================================================
+if test -z "$CROSS_COMPILE"; then
+case "$target" in
+*-mingw*)
+    if test -z "$CPP"; then CPP="$CC -E -nologo"; fi
+    if test -z "$CXXCPP"; then CXXCPP="$CXX -TP -E -nologo"; ac_cv_prog_CXXCPP="$CXXCPP"; fi
+    if test -z "$AS"; then
+        case "${target_cpu}" in
+        i*86)
+            AS=ml;
+            ;;
+        x86_64)
+            AS=ml64;
+            ;;
+        esac
+    fi
+    if test -z "$MIDL"; then MIDL=midl; fi
+
+    # need override this flag since we don't use $(LDFLAGS) for this.
+    if test -z "$HOST_LDFLAGS" ; then
+        HOST_LDFLAGS=" "
+    fi
+    ;;
+esac
+fi
+])
+
+dnl ============================================================================
+dnl C++ rtti
+dnl We don't use it in the code, but it can be usefull for debugging, so give
+dnl the user the option of enabling it.
+dnl ============================================================================
+AC_DEFUN([MOZ_RTTI],
+[
+MOZ_ARG_ENABLE_BOOL(cpp-rtti,
+[  --enable-cpp-rtti       Enable C++ RTTI ],
+[ _MOZ_USE_RTTI=1 ],
+[ _MOZ_USE_RTTI= ])
+
+if test -z "$_MOZ_USE_RTTI"; then
+    if test "$GNU_CC"; then
+        CXXFLAGS="$CXXFLAGS -fno-rtti"
+    else
+        case "$target" in
+        *-mingw*)
+            CXXFLAGS="$CXXFLAGS -GR-"
+        esac
+    fi
+fi
+])
+
+dnl ========================================================
+dnl =
+dnl = Debugging Options
+dnl =
+dnl ========================================================
+AC_DEFUN([MOZ_DEBUGGING_OPTS],
+[
+
+if test -z "$MOZ_DEBUG" -o -n "$MOZ_ASAN"; then
+    MOZ_NO_DEBUG_RTL=1
+fi
+
+AC_SUBST(MOZ_NO_DEBUG_RTL)
+
+MOZ_DEBUG_ENABLE_DEFS="DEBUG TRACING"
+MOZ_ARG_WITH_STRING(debug-label,
+[  --with-debug-label=LABELS
+                          Define DEBUG_<value> for each comma-separated
+                          value given.],
+[ for option in `echo $withval | sed 's/,/ /g'`; do
+    MOZ_DEBUG_ENABLE_DEFS="$MOZ_DEBUG_ENABLE_DEFS DEBUG_${option}"
+done])
+
+if test -n "$MOZ_DEBUG"; then
+    if test -n "$COMPILE_ENVIRONMENT"; then
+        AC_MSG_CHECKING([for valid debug flags])
+        _SAVE_CFLAGS=$CFLAGS
+        CFLAGS="$CFLAGS $MOZ_DEBUG_FLAGS"
+        AC_TRY_COMPILE([#include <stdio.h>],
+            [printf("Hello World\n");],
+            _results=yes,
+            _results=no)
+        AC_MSG_RESULT([$_results])
+        if test "$_results" = "no"; then
+            AC_MSG_ERROR([These compiler flags are invalid: $MOZ_DEBUG_FLAGS])
+        fi
+        CFLAGS=$_SAVE_CFLAGS
+    fi
+
+    MOZ_DEBUG_DEFINES="$MOZ_DEBUG_ENABLE_DEFS"
+else
+    MOZ_DEBUG_DEFINES="NDEBUG TRIMMED"
+fi
+
+AC_SUBST_LIST(MOZ_DEBUG_DEFINES)
+
+])
+
+dnl A high level macro for selecting compiler options.
+AC_DEFUN([MOZ_COMPILER_OPTS],
+[
+  MOZ_DEBUGGING_OPTS
+  MOZ_RTTI
+if test "$CLANG_CXX"; then
+    ## We disable return-type-c-linkage because jsval is defined as a C++ type but is
+    ## returned by C functions. This is possible because we use knowledge about the ABI
+    ## to typedef it to a C type with the same layout when the headers are included
+    ## from C.
+    _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Wno-unknown-warning-option -Wno-return-type-c-linkage"
+fi
+
+if test -n "$DEVELOPER_OPTIONS"; then
+    MOZ_FORCE_GOLD=1
+fi
+
+MOZ_ARG_ENABLE_BOOL(gold,
+[  --enable-gold           Enable GNU Gold Linker when it is not already the default],
+    MOZ_FORCE_GOLD=1,
+    MOZ_FORCE_GOLD=
+    )
+
+if test "$GNU_CC" -a -n "$MOZ_FORCE_GOLD"; then
+    dnl if the default linker is BFD ld, check if gold is available and try to use it
+    dnl for local builds only.
+    if $CC -Wl,--version 2>&1 | grep -q "GNU ld"; then
+        GOLD=$($CC -print-prog-name=ld.gold)
+        case "$GOLD" in
+        /*)
+            ;;
+        *)
+            GOLD=$(which $GOLD)
+            ;;
+        esac
+        if test -n "$GOLD"; then
+            mkdir -p $_objdir/build/unix/gold
+            rm -f $_objdir/build/unix/gold/ld
+            ln -s "$GOLD" $_objdir/build/unix/gold/ld
+            if $CC -B $_objdir/build/unix/gold -Wl,--version 2>&1 | grep -q "GNU gold"; then
+                LDFLAGS="$LDFLAGS -B $_objdir/build/unix/gold"
+            else
+                rm -rf $_objdir/build/unix/gold
+            fi
+        fi
+    fi
+fi
+if test "$GNU_CC"; then
+    if $CC $LDFLAGS -Wl,--version 2>&1 | grep -q "GNU ld"; then
+        LD_IS_BFD=1
+    fi
+fi
+
+AC_SUBST([LD_IS_BFD])
+
+if test "$GNU_CC"; then
+    if test -z "$DEVELOPER_OPTIONS"; then
+        CFLAGS="$CFLAGS -ffunction-sections -fdata-sections"
+        CXXFLAGS="$CXXFLAGS -ffunction-sections -fdata-sections"
+    fi
+    CFLAGS="$CFLAGS -fno-math-errno"
+    CXXFLAGS="$CXXFLAGS -fno-exceptions -fno-math-errno"
+
+    if test -z "$CLANG_CC"; then
+        case "$CC_VERSION" in
+        4.*)
+            ;;
+        *)
+            # Lifetime Dead Store Elimination level 2 (default in GCC6+) breaks Gecko.
+            # Ideally, we'd use -flifetime-dse=1, but that means we'd forcefully
+            # enable it on optimization levels where it would otherwise not be enabled.
+            # So we disable it entirely. But since that would mean inconsistency with
+            # GCC5, which has level 1 depending on optimization level, disable it on
+            # GCC5 as well, because better safe than sorry.
+            # Add it first so that a mozconfig can override by setting CFLAGS/CXXFLAGS.
+            CFLAGS="-fno-lifetime-dse $CFLAGS"
+            CXXFLAGS="-fno-lifetime-dse $CXXFLAGS"
+            ;;
+        esac
+    fi
+fi
+
+dnl ========================================================
+dnl = Identical Code Folding
+dnl ========================================================
+
+MOZ_ARG_DISABLE_BOOL(icf,
+[  --disable-icf          Disable Identical Code Folding],
+    MOZ_DISABLE_ICF=1,
+    MOZ_DISABLE_ICF= )
+
+if test "$GNU_CC" -a "$GCC_USE_GNU_LD" -a -z "$MOZ_DISABLE_ICF" -a -z "$DEVELOPER_OPTIONS"; then
+    AC_CACHE_CHECK([whether the linker supports Identical Code Folding],
+        LD_SUPPORTS_ICF,
+        [echo 'int foo() {return 42;}' \
+              'int bar() {return 42;}' \
+              'int main() {return foo() - bar();}' > conftest.${ac_ext}
+        # If the linker supports ICF, foo and bar symbols will have
+        # the same address
+        if AC_TRY_COMMAND([${CC-cc} -o conftest${ac_exeext} $LDFLAGS -Wl,--icf=safe -ffunction-sections conftest.${ac_ext} $LIBS 1>&2]) &&
+           test -s conftest${ac_exeext} &&
+           objdump -t conftest${ac_exeext} | awk changequote(<<, >>)'{a[<<$>>6] = <<$>>1} END {if (a["foo"] && (a["foo"] != a["bar"])) { exit 1 }}'changequote([, ]); then
+            LD_SUPPORTS_ICF=yes
+        else
+            LD_SUPPORTS_ICF=no
+        fi
+        rm -rf conftest*])
+    if test "$LD_SUPPORTS_ICF" = yes; then
+        _SAVE_LDFLAGS="$LDFLAGS -Wl,--icf=safe"
+        LDFLAGS="$LDFLAGS -Wl,--icf=safe -Wl,--print-icf-sections"
+        AC_TRY_LINK([], [],
+                    [LD_PRINT_ICF_SECTIONS=-Wl,--print-icf-sections],
+                    [LD_PRINT_ICF_SECTIONS=])
+        AC_SUBST([LD_PRINT_ICF_SECTIONS])
+        LDFLAGS="$_SAVE_LDFLAGS"
+    fi
+fi
+
+dnl ========================================================
+dnl = Automatically remove dead symbols
+dnl ========================================================
+
+if test "$GNU_CC" -a "$GCC_USE_GNU_LD" -a -z "$DEVELOPER_OPTIONS"; then
+    if test -n "$MOZ_DEBUG_FLAGS"; then
+        dnl See bug 670659
+        AC_CACHE_CHECK([whether removing dead symbols breaks debugging],
+            GC_SECTIONS_BREAKS_DEBUG_RANGES,
+            [echo 'int foo() {return 42;}' \
+                  'int bar() {return 1;}' \
+                  'int main() {return foo();}' > conftest.${ac_ext}
+            if AC_TRY_COMMAND([${CC-cc} -o conftest.${ac_objext} $CFLAGS $MOZ_DEBUG_FLAGS -c conftest.${ac_ext} 1>&2]) &&
+                AC_TRY_COMMAND([${CC-cc} -o conftest${ac_exeext} $LDFLAGS $MOZ_DEBUG_FLAGS -Wl,--gc-sections conftest.${ac_objext} $LIBS 1>&2]) &&
+                test -s conftest${ac_exeext} -a -s conftest.${ac_objext}; then
+                 if test "`$PYTHON -m mozbuild.configure.check_debug_ranges conftest.${ac_objext} conftest.${ac_ext}`" = \
+                         "`$PYTHON -m mozbuild.configure.check_debug_ranges conftest${ac_exeext} conftest.${ac_ext}`"; then
+                     GC_SECTIONS_BREAKS_DEBUG_RANGES=no
+                 else
+                     GC_SECTIONS_BREAKS_DEBUG_RANGES=yes
+                 fi
+             else
+                  dnl We really don't expect to get here, but just in case
+                  GC_SECTIONS_BREAKS_DEBUG_RANGES="no, but it's broken in some other way"
+             fi
+             rm -rf conftest*])
+         if test "$GC_SECTIONS_BREAKS_DEBUG_RANGES" = no; then
+             DSO_LDOPTS="$DSO_LDOPTS -Wl,--gc-sections"
+         fi
+    else
+        DSO_LDOPTS="$DSO_LDOPTS -Wl,--gc-sections"
+    fi
+fi
+
+# bionic in Android < 4.1 doesn't support PIE
+# On OSX, the linker defaults to building PIE programs when targetting OSX 10.7+,
+# but not when targetting OSX < 10.7. OSX < 10.7 doesn't support running PIE
+# programs, so as long as support for OSX 10.6 is kept, we can't build PIE.
+# Even after dropping 10.6 support, MOZ_PIE would not be useful since it's the
+# default (and clang says the -pie option is not used).
+# On other Unix systems, some file managers (Nautilus) can't start PIE programs
+if test -n "$gonkdir" && test "$ANDROID_VERSION" -ge 16; then
+    MOZ_PIE=1
+else
+    MOZ_PIE=
+fi
+
+MOZ_ARG_ENABLE_BOOL(pie,
+[  --enable-pie           Enable Position Independent Executables],
+    MOZ_PIE=1,
+    MOZ_PIE= )
+
+if test "$GNU_CC" -a -n "$MOZ_PIE"; then
+    AC_MSG_CHECKING([for PIE support])
+    _SAVE_LDFLAGS=$LDFLAGS
+    LDFLAGS="$LDFLAGS $DSO_PIC_CFLAGS -pie"
+    AC_TRY_LINK(,,AC_MSG_RESULT([yes])
+                  [MOZ_PROGRAM_LDFLAGS="$MOZ_PROGRAM_LDFLAGS -pie"],
+                  AC_MSG_RESULT([no])
+                  AC_MSG_ERROR([--enable-pie requires PIE support from the linker.]))
+    LDFLAGS=$_SAVE_LDFLAGS
+fi
+
+AC_SUBST(MOZ_PROGRAM_LDFLAGS)
+
+dnl ASan assumes no symbols are being interposed, and when that happens,
+dnl it's not happy with it. Unconveniently, since Firefox is exporting
+dnl libffi symbols and Gtk+3 pulls system libffi via libwayland-client,
+dnl system libffi interposes libffi symbols that ASan assumes are in
+dnl libxul, so it barfs about buffer overflows.
+dnl Using -Wl,-Bsymbolic ensures no exported symbol can be interposed.
+if test -n "$GCC_USE_GNU_LD"; then
+  case "$LDFLAGS" in
+  *-fsanitize=address*)
+    LDFLAGS="$LDFLAGS -Wl,-Bsymbolic"
+    ;;
+  esac
+fi
+
+])
diff --git a/build/autoconf/config.guess b/build/autoconf/config.guess
new file mode 100755
index 000000000..d5d667d4a
--- /dev/null
+++ b/build/autoconf/config.guess
@@ -0,0 +1,1454 @@
+#! /bin/sh
+# Attempt to guess a canonical system name.
+#   Copyright 1992-2016 Free Software Foundation, Inc.
+
+timestamp='2016-03-24'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
+#
+# Originally written by Per Bothner; maintained since 2000 by Ben Elliston.
+#
+# You can get the latest version of this script from:
+# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess
+#
+# Please send patches to <config-patches@gnu.org>.
+
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION]
+
+Output the configuration name of the system \`$me' is run on.
+
+Operation modes:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.guess ($timestamp)
+
+Originally written by Per Bothner.
+Copyright 1992-2016 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+    * )
+       break ;;
+  esac
+done
+
+if test $# != 0; then
+  echo "$me: too many arguments$help" >&2
+  exit 1
+fi
+
+trap 'exit 1' 1 2 15
+
+# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
+# compiler to aid in system detection is discouraged as it requires
+# temporary files to be created and, as you can see below, it is a
+# headache to deal with in a portable fashion.
+
+# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
+# use `HOST_CC' if defined, but it is deprecated.
+
+# Portable tmp directory creation inspired by the Autoconf team.
+
+set_cc_for_build='
+trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ;
+trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ;
+: ${TMPDIR=/tmp} ;
+ { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
+ { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } ||
+ { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } ||
+ { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ;
+dummy=$tmp/dummy ;
+tmpfiles="$dummy.c $dummy.o $dummy.rel $dummy" ;
+case $CC_FOR_BUILD,$HOST_CC,$CC in
+ ,,)    echo "int x;" > $dummy.c ;
+	for c in cc gcc c89 c99 ; do
+	  if ($c -c -o $dummy.o $dummy.c) >/dev/null 2>&1 ; then
+	     CC_FOR_BUILD="$c"; break ;
+	  fi ;
+	done ;
+	if test x"$CC_FOR_BUILD" = x ; then
+	  CC_FOR_BUILD=no_compiler_found ;
+	fi
+	;;
+ ,,*)   CC_FOR_BUILD=$CC ;;
+ ,*,*)  CC_FOR_BUILD=$HOST_CC ;;
+esac ; set_cc_for_build= ;'
+
+# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
+# (ghazi@noc.rutgers.edu 1994-08-24)
+if (test -f /.attbin/uname) >/dev/null 2>&1 ; then
+	PATH=$PATH:/.attbin ; export PATH
+fi
+
+UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
+UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
+UNAME_SYSTEM=`(uname -s) 2>/dev/null`  || UNAME_SYSTEM=unknown
+UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
+
+case "${UNAME_SYSTEM}" in
+Linux|GNU|GNU/*)
+	# If the system lacks a compiler, then just pick glibc.
+	# We could probably try harder.
+	LIBC=gnu
+
+	eval $set_cc_for_build
+	cat <<-EOF > $dummy.c
+	#include <features.h>
+	#if defined(__UCLIBC__)
+	LIBC=uclibc
+	#elif defined(__dietlibc__)
+	LIBC=dietlibc
+	#else
+	LIBC=gnu
+	#endif
+	EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC' | sed 's, ,,g'`
+	;;
+esac
+
+# Note: order is significant - the case branches are not exclusive.
+
+case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
+    *:NetBSD:*:*)
+	# NetBSD (nbsd) targets should (where applicable) match one or
+	# more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*,
+	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
+	# switched to ELF, *-*-netbsd* would select the old
+	# object file format.  This provides both forward
+	# compatibility and a consistent mechanism for selecting the
+	# object file format.
+	#
+	# Note: NetBSD doesn't particularly care about the vendor
+	# portion of the name.  We always set it to "unknown".
+	sysctl="sysctl -n hw.machine_arch"
+	UNAME_MACHINE_ARCH=`(uname -p 2>/dev/null || \
+	    /sbin/$sysctl 2>/dev/null || \
+	    /usr/sbin/$sysctl 2>/dev/null || \
+	    echo unknown)`
+	case "${UNAME_MACHINE_ARCH}" in
+	    armeb) machine=armeb-unknown ;;
+	    arm*) machine=arm-unknown ;;
+	    sh3el) machine=shl-unknown ;;
+	    sh3eb) machine=sh-unknown ;;
+	    sh5el) machine=sh5le-unknown ;;
+	    earmv*)
+		arch=`echo ${UNAME_MACHINE_ARCH} | sed -e 's,^e\(armv[0-9]\).*$,\1,'`
+		endian=`echo ${UNAME_MACHINE_ARCH} | sed -ne 's,^.*\(eb\)$,\1,p'`
+		machine=${arch}${endian}-unknown
+		;;
+	    *) machine=${UNAME_MACHINE_ARCH}-unknown ;;
+	esac
+	# The Operating System including object format, if it has switched
+	# to ELF recently, or will in the future.
+	case "${UNAME_MACHINE_ARCH}" in
+	    arm*|earm*|i386|m68k|ns32k|sh3*|sparc|vax)
+		eval $set_cc_for_build
+		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
+			| grep -q __ELF__
+		then
+		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
+		    # Return netbsd for either.  FIX?
+		    os=netbsd
+		else
+		    os=netbsdelf
+		fi
+		;;
+	    *)
+		os=netbsd
+		;;
+	esac
+	# Determine ABI tags.
+	case "${UNAME_MACHINE_ARCH}" in
+	    earm*)
+		expr='s/^earmv[0-9]/-eabi/;s/eb$//'
+		abi=`echo ${UNAME_MACHINE_ARCH} | sed -e "$expr"`
+		;;
+	esac
+	# The OS release
+	# Debian GNU/NetBSD machines have a different userland, and
+	# thus, need a distinct triplet. However, they do not need
+	# kernel version information, so it can be replaced with a
+	# suitable tag, in the style of linux-gnu.
+	case "${UNAME_VERSION}" in
+	    Debian*)
+		release='-gnu'
+		;;
+	    *)
+		release=`echo ${UNAME_RELEASE} | sed -e 's/[-_].*//' | cut -d. -f1,2`
+		;;
+	esac
+	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
+	# contains redundant information, the shorter form:
+	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
+	echo "${machine}-${os}${release}${abi}"
+	exit ;;
+    *:Bitrig:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'`
+	echo ${UNAME_MACHINE_ARCH}-unknown-bitrig${UNAME_RELEASE}
+	exit ;;
+    *:OpenBSD:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
+	echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE}
+	exit ;;
+    *:LibertyBSD:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/^.*BSD\.//'`
+	echo ${UNAME_MACHINE_ARCH}-unknown-libertybsd${UNAME_RELEASE}
+	exit ;;
+    *:ekkoBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE}
+	exit ;;
+    *:SolidBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-solidbsd${UNAME_RELEASE}
+	exit ;;
+    macppc:MirBSD:*:*)
+	echo powerpc-unknown-mirbsd${UNAME_RELEASE}
+	exit ;;
+    *:MirBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE}
+	exit ;;
+    *:Sortix:*:*)
+	echo ${UNAME_MACHINE}-unknown-sortix
+	exit ;;
+    alpha:OSF1:*:*)
+	case $UNAME_RELEASE in
+	*4.0)
+		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
+		;;
+	*5.*)
+		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
+		;;
+	esac
+	# According to Compaq, /usr/sbin/psrinfo has been available on
+	# OSF/1 and Tru64 systems produced since 1995.  I hope that
+	# covers most systems running today.  This code pipes the CPU
+	# types through head -n 1, so we only detect the type of CPU 0.
+	ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1`
+	case "$ALPHA_CPU_TYPE" in
+	    "EV4 (21064)")
+		UNAME_MACHINE=alpha ;;
+	    "EV4.5 (21064)")
+		UNAME_MACHINE=alpha ;;
+	    "LCA4 (21066/21068)")
+		UNAME_MACHINE=alpha ;;
+	    "EV5 (21164)")
+		UNAME_MACHINE=alphaev5 ;;
+	    "EV5.6 (21164A)")
+		UNAME_MACHINE=alphaev56 ;;
+	    "EV5.6 (21164PC)")
+		UNAME_MACHINE=alphapca56 ;;
+	    "EV5.7 (21164PC)")
+		UNAME_MACHINE=alphapca57 ;;
+	    "EV6 (21264)")
+		UNAME_MACHINE=alphaev6 ;;
+	    "EV6.7 (21264A)")
+		UNAME_MACHINE=alphaev67 ;;
+	    "EV6.8CB (21264C)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.8AL (21264B)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.8CX (21264D)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.9A (21264/EV69A)")
+		UNAME_MACHINE=alphaev69 ;;
+	    "EV7 (21364)")
+		UNAME_MACHINE=alphaev7 ;;
+	    "EV7.9 (21364A)")
+		UNAME_MACHINE=alphaev79 ;;
+	esac
+	# A Pn.n version is a patched version.
+	# A Vn.n version is a released version.
+	# A Tn.n version is a released field test version.
+	# A Xn.n version is an unreleased experimental baselevel.
+	# 1.2 uses "1.2" for uname -r.
+	echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`
+	# Reset EXIT trap before exiting to avoid spurious non-zero exit code.
+	exitcode=$?
+	trap '' 0
+	exit $exitcode ;;
+    Alpha\ *:Windows_NT*:*)
+	# How do we know it's Interix rather than the generic POSIX subsystem?
+	# Should we change UNAME_MACHINE based on the output of uname instead
+	# of the specific Alpha model?
+	echo alpha-pc-interix
+	exit ;;
+    21064:Windows_NT:50:3)
+	echo alpha-dec-winnt3.5
+	exit ;;
+    Amiga*:UNIX_System_V:4.0:*)
+	echo m68k-unknown-sysv4
+	exit ;;
+    *:[Aa]miga[Oo][Ss]:*:*)
+	echo ${UNAME_MACHINE}-unknown-amigaos
+	exit ;;
+    *:[Mm]orph[Oo][Ss]:*:*)
+	echo ${UNAME_MACHINE}-unknown-morphos
+	exit ;;
+    *:OS/390:*:*)
+	echo i370-ibm-openedition
+	exit ;;
+    *:z/VM:*:*)
+	echo s390-ibm-zvmoe
+	exit ;;
+    *:OS400:*:*)
+	echo powerpc-ibm-os400
+	exit ;;
+    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
+	echo arm-acorn-riscix${UNAME_RELEASE}
+	exit ;;
+    arm*:riscos:*:*|arm*:RISCOS:*:*)
+	echo arm-unknown-riscos
+	exit ;;
+    SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
+	echo hppa1.1-hitachi-hiuxmpp
+	exit ;;
+    Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
+	# akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
+	if test "`(/bin/universe) 2>/dev/null`" = att ; then
+		echo pyramid-pyramid-sysv3
+	else
+		echo pyramid-pyramid-bsd
+	fi
+	exit ;;
+    NILE*:*:*:dcosx)
+	echo pyramid-pyramid-svr4
+	exit ;;
+    DRS?6000:unix:4.0:6*)
+	echo sparc-icl-nx6
+	exit ;;
+    DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
+	case `/usr/bin/uname -p` in
+	    sparc) echo sparc-icl-nx7; exit ;;
+	esac ;;
+    s390x:SunOS:*:*)
+	echo ${UNAME_MACHINE}-ibm-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    sun4H:SunOS:5.*:*)
+	echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
+	echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*)
+	echo i386-pc-auroraux${UNAME_RELEASE}
+	exit ;;
+    i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
+	eval $set_cc_for_build
+	SUN_ARCH=i386
+	# If there is a compiler, see if it is configured for 64-bit objects.
+	# Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
+	# This test works for both compilers.
+	if [ "$CC_FOR_BUILD" != no_compiler_found ]; then
+	    if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
+		(CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
+		grep IS_64BIT_ARCH >/dev/null
+	    then
+		SUN_ARCH=x86_64
+	    fi
+	fi
+	echo ${SUN_ARCH}-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    sun4*:SunOS:6*:*)
+	# According to config.sub, this is the proper way to canonicalize
+	# SunOS6.  Hard to guess exactly what SunOS6 will be like, but
+	# it's likely to be more like Solaris than SunOS4.
+	echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    sun4*:SunOS:*:*)
+	case "`/usr/bin/arch -k`" in
+	    Series*|S4*)
+		UNAME_RELEASE=`uname -v`
+		;;
+	esac
+	# Japanese Language versions have a version number like `4.1.3-JL'.
+	echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'`
+	exit ;;
+    sun3*:SunOS:*:*)
+	echo m68k-sun-sunos${UNAME_RELEASE}
+	exit ;;
+    sun*:*:4.2BSD:*)
+	UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
+	test "x${UNAME_RELEASE}" = x && UNAME_RELEASE=3
+	case "`/bin/arch`" in
+	    sun3)
+		echo m68k-sun-sunos${UNAME_RELEASE}
+		;;
+	    sun4)
+		echo sparc-sun-sunos${UNAME_RELEASE}
+		;;
+	esac
+	exit ;;
+    aushp:SunOS:*:*)
+	echo sparc-auspex-sunos${UNAME_RELEASE}
+	exit ;;
+    # The situation for MiNT is a little confusing.  The machine name
+    # can be virtually everything (everything which is not
+    # "atarist" or "atariste" at least should have a processor
+    # > m68000).  The system name ranges from "MiNT" over "FreeMiNT"
+    # to the lowercase version "mint" (or "freemint").  Finally
+    # the system name "TOS" denotes a system which is actually not
+    # MiNT.  But MiNT is downward compatible to TOS, so this should
+    # be no problem.
+    atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
+	echo m68k-atari-mint${UNAME_RELEASE}
+	exit ;;
+    atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
+	echo m68k-atari-mint${UNAME_RELEASE}
+	exit ;;
+    *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
+	echo m68k-atari-mint${UNAME_RELEASE}
+	exit ;;
+    milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
+	echo m68k-milan-mint${UNAME_RELEASE}
+	exit ;;
+    hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
+	echo m68k-hades-mint${UNAME_RELEASE}
+	exit ;;
+    *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
+	echo m68k-unknown-mint${UNAME_RELEASE}
+	exit ;;
+    m68k:machten:*:*)
+	echo m68k-apple-machten${UNAME_RELEASE}
+	exit ;;
+    powerpc:machten:*:*)
+	echo powerpc-apple-machten${UNAME_RELEASE}
+	exit ;;
+    RISC*:Mach:*:*)
+	echo mips-dec-mach_bsd4.3
+	exit ;;
+    RISC*:ULTRIX:*:*)
+	echo mips-dec-ultrix${UNAME_RELEASE}
+	exit ;;
+    VAX*:ULTRIX*:*:*)
+	echo vax-dec-ultrix${UNAME_RELEASE}
+	exit ;;
+    2020:CLIX:*:* | 2430:CLIX:*:*)
+	echo clipper-intergraph-clix${UNAME_RELEASE}
+	exit ;;
+    mips:*:*:UMIPS | mips:*:*:RISCos)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+#ifdef __cplusplus
+#include <stdio.h>  /* for printf() prototype */
+	int main (int argc, char *argv[]) {
+#else
+	int main (argc, argv) int argc; char *argv[]; {
+#endif
+	#if defined (host_mips) && defined (MIPSEB)
+	#if defined (SYSTYPE_SYSV)
+	  printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_SVR4)
+	  printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
+	  printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0);
+	#endif
+	#endif
+	  exit (-1);
+	}
+EOF
+	$CC_FOR_BUILD -o $dummy $dummy.c &&
+	  dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` &&
+	  SYSTEM_NAME=`$dummy $dummyarg` &&
+	    { echo "$SYSTEM_NAME"; exit; }
+	echo mips-mips-riscos${UNAME_RELEASE}
+	exit ;;
+    Motorola:PowerMAX_OS:*:*)
+	echo powerpc-motorola-powermax
+	exit ;;
+    Motorola:*:4.3:PL8-*)
+	echo powerpc-harris-powermax
+	exit ;;
+    Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
+	echo powerpc-harris-powermax
+	exit ;;
+    Night_Hawk:Power_UNIX:*:*)
+	echo powerpc-harris-powerunix
+	exit ;;
+    m88k:CX/UX:7*:*)
+	echo m88k-harris-cxux7
+	exit ;;
+    m88k:*:4*:R4*)
+	echo m88k-motorola-sysv4
+	exit ;;
+    m88k:*:3*:R3*)
+	echo m88k-motorola-sysv3
+	exit ;;
+    AViiON:dgux:*:*)
+	# DG/UX returns AViiON for all architectures
+	UNAME_PROCESSOR=`/usr/bin/uname -p`
+	if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ]
+	then
+	    if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
+	       [ ${TARGET_BINARY_INTERFACE}x = x ]
+	    then
+		echo m88k-dg-dgux${UNAME_RELEASE}
+	    else
+		echo m88k-dg-dguxbcs${UNAME_RELEASE}
+	    fi
+	else
+	    echo i586-dg-dgux${UNAME_RELEASE}
+	fi
+	exit ;;
+    M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
+	echo m88k-dolphin-sysv3
+	exit ;;
+    M88*:*:R3*:*)
+	# Delta 88k system running SVR3
+	echo m88k-motorola-sysv3
+	exit ;;
+    XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
+	echo m88k-tektronix-sysv3
+	exit ;;
+    Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
+	echo m68k-tektronix-bsd
+	exit ;;
+    *:IRIX*:*:*)
+	echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'`
+	exit ;;
+    ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
+	echo romp-ibm-aix     # uname -m gives an 8 hex-code CPU id
+	exit ;;               # Note that: echo "'`uname -s`'" gives 'AIX '
+    i*86:AIX:*:*)
+	echo i386-ibm-aix
+	exit ;;
+    ia64:AIX:*:*)
+	if [ -x /usr/bin/oslevel ] ; then
+		IBM_REV=`/usr/bin/oslevel`
+	else
+		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+	fi
+	echo ${UNAME_MACHINE}-ibm-aix${IBM_REV}
+	exit ;;
+    *:AIX:2:3)
+	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
+		eval $set_cc_for_build
+		sed 's/^		//' << EOF >$dummy.c
+		#include <sys/systemcfg.h>
+
+		main()
+			{
+			if (!__power_pc())
+				exit(1);
+			puts("powerpc-ibm-aix3.2.5");
+			exit(0);
+			}
+EOF
+		if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy`
+		then
+			echo "$SYSTEM_NAME"
+		else
+			echo rs6000-ibm-aix3.2.5
+		fi
+	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
+		echo rs6000-ibm-aix3.2.4
+	else
+		echo rs6000-ibm-aix3.2
+	fi
+	exit ;;
+    *:AIX:*:[4567])
+	IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
+	if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
+		IBM_ARCH=rs6000
+	else
+		IBM_ARCH=powerpc
+	fi
+	if [ -x /usr/bin/lslpp ] ; then
+		IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc |
+			   awk -F: '{ print $3 }' | sed s/[0-9]*$/0/`
+	else
+		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+	fi
+	echo ${IBM_ARCH}-ibm-aix${IBM_REV}
+	exit ;;
+    *:AIX:*:*)
+	echo rs6000-ibm-aix
+	exit ;;
+    ibmrt:4.4BSD:*|romp-ibm:BSD:*)
+	echo romp-ibm-bsd4.4
+	exit ;;
+    ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and
+	echo romp-ibm-bsd${UNAME_RELEASE}   # 4.3 with uname added to
+	exit ;;                             # report: romp-ibm BSD 4.3
+    *:BOSX:*:*)
+	echo rs6000-bull-bosx
+	exit ;;
+    DPX/2?00:B.O.S.:*:*)
+	echo m68k-bull-sysv3
+	exit ;;
+    9000/[34]??:4.3bsd:1.*:*)
+	echo m68k-hp-bsd
+	exit ;;
+    hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
+	echo m68k-hp-bsd4.4
+	exit ;;
+    9000/[34678]??:HP-UX:*:*)
+	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+	case "${UNAME_MACHINE}" in
+	    9000/31? )            HP_ARCH=m68000 ;;
+	    9000/[34]?? )         HP_ARCH=m68k ;;
+	    9000/[678][0-9][0-9])
+		if [ -x /usr/bin/getconf ]; then
+		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
+		    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
+		    case "${sc_cpu_version}" in
+		      523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0
+		      528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1
+		      532)                      # CPU_PA_RISC2_0
+			case "${sc_kernel_bits}" in
+			  32) HP_ARCH=hppa2.0n ;;
+			  64) HP_ARCH=hppa2.0w ;;
+			  '') HP_ARCH=hppa2.0 ;;   # HP-UX 10.20
+			esac ;;
+		    esac
+		fi
+		if [ "${HP_ARCH}" = "" ]; then
+		    eval $set_cc_for_build
+		    sed 's/^		//' << EOF >$dummy.c
+
+		#define _HPUX_SOURCE
+		#include <stdlib.h>
+		#include <unistd.h>
+
+		int main ()
+		{
+		#if defined(_SC_KERNEL_BITS)
+		    long bits = sysconf(_SC_KERNEL_BITS);
+		#endif
+		    long cpu  = sysconf (_SC_CPU_VERSION);
+
+		    switch (cpu)
+			{
+			case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+			case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+			case CPU_PA_RISC2_0:
+		#if defined(_SC_KERNEL_BITS)
+			    switch (bits)
+				{
+				case 64: puts ("hppa2.0w"); break;
+				case 32: puts ("hppa2.0n"); break;
+				default: puts ("hppa2.0"); break;
+				} break;
+		#else  /* !defined(_SC_KERNEL_BITS) */
+			    puts ("hppa2.0"); break;
+		#endif
+			default: puts ("hppa1.0"); break;
+			}
+		    exit (0);
+		}
+EOF
+		    (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
+		    test -z "$HP_ARCH" && HP_ARCH=hppa
+		fi ;;
+	esac
+	if [ ${HP_ARCH} = hppa2.0w ]
+	then
+	    eval $set_cc_for_build
+
+	    # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
+	    # 32-bit code.  hppa64-hp-hpux* has the same kernel and a compiler
+	    # generating 64-bit code.  GNU and HP use different nomenclature:
+	    #
+	    # $ CC_FOR_BUILD=cc ./config.guess
+	    # => hppa2.0w-hp-hpux11.23
+	    # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
+	    # => hppa64-hp-hpux11.23
+
+	    if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) |
+		grep -q __LP64__
+	    then
+		HP_ARCH=hppa2.0w
+	    else
+		HP_ARCH=hppa64
+	    fi
+	fi
+	echo ${HP_ARCH}-hp-hpux${HPUX_REV}
+	exit ;;
+    ia64:HP-UX:*:*)
+	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+	echo ia64-hp-hpux${HPUX_REV}
+	exit ;;
+    3050*:HI-UX:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#include <unistd.h>
+	int
+	main ()
+	{
+	  long cpu = sysconf (_SC_CPU_VERSION);
+	  /* The order matters, because CPU_IS_HP_MC68K erroneously returns
+	     true for CPU_PA_RISC1_0.  CPU_IS_PA_RISC returns correct
+	     results, however.  */
+	  if (CPU_IS_PA_RISC (cpu))
+	    {
+	      switch (cpu)
+		{
+		  case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
+		  default: puts ("hppa-hitachi-hiuxwe2"); break;
+		}
+	    }
+	  else if (CPU_IS_HP_MC68K (cpu))
+	    puts ("m68k-hitachi-hiuxwe2");
+	  else puts ("unknown-hitachi-hiuxwe2");
+	  exit (0);
+	}
+EOF
+	$CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` &&
+		{ echo "$SYSTEM_NAME"; exit; }
+	echo unknown-hitachi-hiuxwe2
+	exit ;;
+    9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* )
+	echo hppa1.1-hp-bsd
+	exit ;;
+    9000/8??:4.3bsd:*:*)
+	echo hppa1.0-hp-bsd
+	exit ;;
+    *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
+	echo hppa1.0-hp-mpeix
+	exit ;;
+    hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* )
+	echo hppa1.1-hp-osf
+	exit ;;
+    hp8??:OSF1:*:*)
+	echo hppa1.0-hp-osf
+	exit ;;
+    i*86:OSF1:*:*)
+	if [ -x /usr/sbin/sysversion ] ; then
+	    echo ${UNAME_MACHINE}-unknown-osf1mk
+	else
+	    echo ${UNAME_MACHINE}-unknown-osf1
+	fi
+	exit ;;
+    parisc*:Lites*:*:*)
+	echo hppa1.1-hp-lites
+	exit ;;
+    C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
+	echo c1-convex-bsd
+	exit ;;
+    C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+	exit ;;
+    C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
+	echo c34-convex-bsd
+	exit ;;
+    C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
+	echo c38-convex-bsd
+	exit ;;
+    C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
+	echo c4-convex-bsd
+	exit ;;
+    CRAY*Y-MP:*:*:*)
+	echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*[A-Z]90:*:*:*)
+	echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \
+	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
+	      -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
+	      -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*TS:*:*:*)
+	echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*T3E:*:*:*)
+	echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*SV1:*:*:*)
+	echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    *:UNICOS/mp:*:*)
+	echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
+	FUJITSU_PROC=`uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`
+	FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
+	FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
+	echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit ;;
+    5000:UNIX_System_V:4.*:*)
+	FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
+	FUJITSU_REL=`echo ${UNAME_RELEASE} | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/'`
+	echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit ;;
+    i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
+	echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
+	exit ;;
+    sparc*:BSD/OS:*:*)
+	echo sparc-unknown-bsdi${UNAME_RELEASE}
+	exit ;;
+    *:BSD/OS:*:*)
+	echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE}
+	exit ;;
+    *:FreeBSD:*:*)
+	UNAME_PROCESSOR=`/usr/bin/uname -p`
+	case ${UNAME_PROCESSOR} in
+	    amd64)
+		echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+	    *)
+		echo ${UNAME_PROCESSOR}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+	esac
+	exit ;;
+    i*:CYGWIN*:*)
+	echo ${UNAME_MACHINE}-pc-cygwin
+	exit ;;
+    *:MINGW64*:*)
+	echo ${UNAME_MACHINE}-pc-mingw64
+	exit ;;
+    *:MINGW*:*)
+	echo ${UNAME_MACHINE}-pc-mingw32
+	exit ;;
+    *:MSYS*:*)
+	echo ${UNAME_MACHINE}-pc-msys
+	exit ;;
+    i*:windows32*:*)
+	# uname -m includes "-pc" on this system.
+	echo ${UNAME_MACHINE}-mingw32
+	exit ;;
+    i*:PW*:*)
+	echo ${UNAME_MACHINE}-pc-pw32
+	exit ;;
+    *:Interix*:*)
+	case ${UNAME_MACHINE} in
+	    x86)
+		echo i586-pc-interix${UNAME_RELEASE}
+		exit ;;
+	    authenticamd | genuineintel | EM64T)
+		echo x86_64-unknown-interix${UNAME_RELEASE}
+		exit ;;
+	    IA64)
+		echo ia64-unknown-interix${UNAME_RELEASE}
+		exit ;;
+	esac ;;
+    [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*)
+	echo i${UNAME_MACHINE}-pc-mks
+	exit ;;
+    8664:Windows_NT:*)
+	echo x86_64-pc-mks
+	exit ;;
+    i*:Windows_NT*:* | Pentium*:Windows_NT*:*)
+	# How do we know it's Interix rather than the generic POSIX subsystem?
+	# It also conflicts with pre-2.0 versions of AT&T UWIN. Should we
+	# UNAME_MACHINE based on the output of uname instead of i386?
+	echo i586-pc-interix
+	exit ;;
+    i*:UWIN*:*)
+	echo ${UNAME_MACHINE}-pc-uwin
+	exit ;;
+    amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
+	echo x86_64-unknown-cygwin
+	exit ;;
+    p*:CYGWIN*:*)
+	echo powerpcle-unknown-cygwin
+	exit ;;
+    prep*:SunOS:5.*:*)
+	echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    *:GNU:*:*)
+	# the GNU system
+	echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-${LIBC}`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
+	exit ;;
+    *:GNU/*:*:*)
+	# other systems with GNU libc and userland
+	echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-${LIBC}
+	exit ;;
+    i*86:Minix:*:*)
+	echo ${UNAME_MACHINE}-pc-minix
+	exit ;;
+    aarch64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    aarch64_be:Linux:*:*)
+	UNAME_MACHINE=aarch64_be
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    alpha:Linux:*:*)
+	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
+	  EV5)   UNAME_MACHINE=alphaev5 ;;
+	  EV56)  UNAME_MACHINE=alphaev56 ;;
+	  PCA56) UNAME_MACHINE=alphapca56 ;;
+	  PCA57) UNAME_MACHINE=alphapca56 ;;
+	  EV6)   UNAME_MACHINE=alphaev6 ;;
+	  EV67)  UNAME_MACHINE=alphaev67 ;;
+	  EV68*) UNAME_MACHINE=alphaev68 ;;
+	esac
+	objdump --private-headers /bin/sh | grep -q ld.so.1
+	if test "$?" = 0 ; then LIBC=gnulibc1 ; fi
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    arc:Linux:*:* | arceb:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    arm*:Linux:*:*)
+	eval $set_cc_for_build
+	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
+	    | grep -q __ARM_EABI__
+	then
+	    echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	else
+	    if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
+		| grep -q __ARM_PCS_VFP
+	    then
+		echo ${UNAME_MACHINE}-unknown-linux-${LIBC}eabi
+	    else
+		echo ${UNAME_MACHINE}-unknown-linux-${LIBC}eabihf
+	    fi
+	fi
+	exit ;;
+    avr32*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    cris:Linux:*:*)
+	echo ${UNAME_MACHINE}-axis-linux-${LIBC}
+	exit ;;
+    crisv32:Linux:*:*)
+	echo ${UNAME_MACHINE}-axis-linux-${LIBC}
+	exit ;;
+    e2k:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    frv:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    hexagon:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    i*86:Linux:*:*)
+	echo ${UNAME_MACHINE}-pc-linux-${LIBC}
+	exit ;;
+    ia64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    k1om:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    m32r*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    m68*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    mips:Linux:*:* | mips64:Linux:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#undef CPU
+	#undef ${UNAME_MACHINE}
+	#undef ${UNAME_MACHINE}el
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	CPU=${UNAME_MACHINE}el
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	CPU=${UNAME_MACHINE}
+	#else
+	CPU=
+	#endif
+	#endif
+EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'`
+	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-${LIBC}"; exit; }
+	;;
+    openrisc*:Linux:*:*)
+	echo or1k-unknown-linux-${LIBC}
+	exit ;;
+    or32:Linux:*:* | or1k*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    padre:Linux:*:*)
+	echo sparc-unknown-linux-${LIBC}
+	exit ;;
+    parisc64:Linux:*:* | hppa64:Linux:*:*)
+	echo hppa64-unknown-linux-${LIBC}
+	exit ;;
+    parisc:Linux:*:* | hppa:Linux:*:*)
+	# Look for CPU level
+	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
+	  PA7*) echo hppa1.1-unknown-linux-${LIBC} ;;
+	  PA8*) echo hppa2.0-unknown-linux-${LIBC} ;;
+	  *)    echo hppa-unknown-linux-${LIBC} ;;
+	esac
+	exit ;;
+    ppc64:Linux:*:*)
+	echo powerpc64-unknown-linux-${LIBC}
+	exit ;;
+    ppc:Linux:*:*)
+	echo powerpc-unknown-linux-${LIBC}
+	exit ;;
+    ppc64le:Linux:*:*)
+	echo powerpc64le-unknown-linux-${LIBC}
+	exit ;;
+    ppcle:Linux:*:*)
+	echo powerpcle-unknown-linux-${LIBC}
+	exit ;;
+    s390:Linux:*:* | s390x:Linux:*:*)
+	echo ${UNAME_MACHINE}-ibm-linux-${LIBC}
+	exit ;;
+    sh64*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    sh*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    sparc:Linux:*:* | sparc64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    tile*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    vax:Linux:*:*)
+	echo ${UNAME_MACHINE}-dec-linux-${LIBC}
+	exit ;;
+    x86_64:Linux:*:*)
+	echo ${UNAME_MACHINE}-pc-linux-${LIBC}
+	exit ;;
+    xtensa*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    i*86:DYNIX/ptx:4*:*)
+	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
+	# earlier versions are messed up and put the nodename in both
+	# sysname and nodename.
+	echo i386-sequent-sysv4
+	exit ;;
+    i*86:UNIX_SV:4.2MP:2.*)
+	# Unixware is an offshoot of SVR4, but it has its own version
+	# number series starting with 2...
+	# I am not positive that other SVR4 systems won't match this,
+	# I just have to hope.  -- rms.
+	# Use sysv4.2uw... so that sysv4* matches it.
+	echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION}
+	exit ;;
+    i*86:OS/2:*:*)
+	# If we were able to find `uname', then EMX Unix compatibility
+	# is probably installed.
+	echo ${UNAME_MACHINE}-pc-os2-emx
+	exit ;;
+    i*86:XTS-300:*:STOP)
+	echo ${UNAME_MACHINE}-unknown-stop
+	exit ;;
+    i*86:atheos:*:*)
+	echo ${UNAME_MACHINE}-unknown-atheos
+	exit ;;
+    i*86:syllable:*:*)
+	echo ${UNAME_MACHINE}-pc-syllable
+	exit ;;
+    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*)
+	echo i386-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    i*86:*DOS:*:*)
+	echo ${UNAME_MACHINE}-pc-msdosdjgpp
+	exit ;;
+    i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*)
+	UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'`
+	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
+		echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL}
+	else
+		echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL}
+	fi
+	exit ;;
+    i*86:*:5:[678]*)
+	# UnixWare 7.x, OpenUNIX and OpenServer 6.
+	case `/bin/uname -X | grep "^Machine"` in
+	    *486*)	     UNAME_MACHINE=i486 ;;
+	    *Pentium)	     UNAME_MACHINE=i586 ;;
+	    *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
+	esac
+	echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
+	exit ;;
+    i*86:*:3.2:*)
+	if test -f /usr/options/cb.name; then
+		UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
+		echo ${UNAME_MACHINE}-pc-isc$UNAME_REL
+	elif /bin/uname -X 2>/dev/null >/dev/null ; then
+		UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
+		(/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
+		(/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
+			&& UNAME_MACHINE=i586
+		(/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		(/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		echo ${UNAME_MACHINE}-pc-sco$UNAME_REL
+	else
+		echo ${UNAME_MACHINE}-pc-sysv32
+	fi
+	exit ;;
+    pc:*:*:*)
+	# Left here for compatibility:
+	# uname -m prints for DJGPP always 'pc', but it prints nothing about
+	# the processor, so we play safe by assuming i586.
+	# Note: whatever this is, it MUST be the same as what config.sub
+	# prints for the "djgpp" host, or else GDB configure will decide that
+	# this is a cross-build.
+	echo i586-pc-msdosdjgpp
+	exit ;;
+    Intel:Mach:3*:*)
+	echo i386-pc-mach3
+	exit ;;
+    paragon:*:*:*)
+	echo i860-intel-osf1
+	exit ;;
+    i860:*:4.*:*) # i860-SVR4
+	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
+	  echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4
+	else # Add other i860-SVR4 vendors below as they are discovered.
+	  echo i860-unknown-sysv${UNAME_RELEASE}  # Unknown i860-SVR4
+	fi
+	exit ;;
+    mini*:CTIX:SYS*5:*)
+	# "miniframe"
+	echo m68010-convergent-sysv
+	exit ;;
+    mc68k:UNIX:SYSTEM5:3.51m)
+	echo m68k-convergent-sysv
+	exit ;;
+    M680?0:D-NIX:5.3:*)
+	echo m68k-diab-dnix
+	exit ;;
+    M68*:*:R3V[5678]*:*)
+	test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
+    3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
+	OS_REL=''
+	test -r /etc/.relid \
+	&& OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	  && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
+    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4; exit; } ;;
+    NCR*:*:4.2:* | MPRAS*:*:4.2:*)
+	OS_REL='.3'
+	test -r /etc/.relid \
+	    && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	    && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	    && { echo i586-ncr-sysv4.3${OS_REL}; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \
+	    && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
+    m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
+	echo m68k-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    mc68030:UNIX_System_V:4.*:*)
+	echo m68k-atari-sysv4
+	exit ;;
+    TSUNAMI:LynxOS:2.*:*)
+	echo sparc-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    rs6000:LynxOS:2.*:*)
+	echo rs6000-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*)
+	echo powerpc-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    SM[BE]S:UNIX_SV:*:*)
+	echo mips-dde-sysv${UNAME_RELEASE}
+	exit ;;
+    RM*:ReliantUNIX-*:*:*)
+	echo mips-sni-sysv4
+	exit ;;
+    RM*:SINIX-*:*:*)
+	echo mips-sni-sysv4
+	exit ;;
+    *:SINIX-*:*:*)
+	if uname -p 2>/dev/null >/dev/null ; then
+		UNAME_MACHINE=`(uname -p) 2>/dev/null`
+		echo ${UNAME_MACHINE}-sni-sysv4
+	else
+		echo ns32k-sni-sysv
+	fi
+	exit ;;
+    PENTIUM:*:4.0*:*)	# Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+			# says <Richard.M.Bartel@ccMail.Census.GOV>
+	echo i586-unisys-sysv4
+	exit ;;
+    *:UNIX_System_V:4*:FTX*)
+	# From Gerald Hewes <hewes@openmarket.com>.
+	# How about differentiating between stratus architectures? -djm
+	echo hppa1.1-stratus-sysv4
+	exit ;;
+    *:*:*:FTX*)
+	# From seanf@swdc.stratus.com.
+	echo i860-stratus-sysv4
+	exit ;;
+    i*86:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	echo ${UNAME_MACHINE}-stratus-vos
+	exit ;;
+    *:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	echo hppa1.1-stratus-vos
+	exit ;;
+    mc68*:A/UX:*:*)
+	echo m68k-apple-aux${UNAME_RELEASE}
+	exit ;;
+    news*:NEWS-OS:6*:*)
+	echo mips-sony-newsos6
+	exit ;;
+    R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
+	if [ -d /usr/nec ]; then
+		echo mips-nec-sysv${UNAME_RELEASE}
+	else
+		echo mips-unknown-sysv${UNAME_RELEASE}
+	fi
+	exit ;;
+    BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
+	echo powerpc-be-beos
+	exit ;;
+    BeMac:BeOS:*:*)	# BeOS running on Mac or Mac clone, PPC only.
+	echo powerpc-apple-beos
+	exit ;;
+    BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
+	echo i586-pc-beos
+	exit ;;
+    BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
+	echo i586-pc-haiku
+	exit ;;
+    x86_64:Haiku:*:*)
+	echo x86_64-unknown-haiku
+	exit ;;
+    SX-4:SUPER-UX:*:*)
+	echo sx4-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-5:SUPER-UX:*:*)
+	echo sx5-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-6:SUPER-UX:*:*)
+	echo sx6-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-7:SUPER-UX:*:*)
+	echo sx7-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-8:SUPER-UX:*:*)
+	echo sx8-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-8R:SUPER-UX:*:*)
+	echo sx8r-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-ACE:SUPER-UX:*:*)
+	echo sxace-nec-superux${UNAME_RELEASE}
+	exit ;;
+    Power*:Rhapsody:*:*)
+	echo powerpc-apple-rhapsody${UNAME_RELEASE}
+	exit ;;
+    *:Rhapsody:*:*)
+	echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE}
+	exit ;;
+    *:Darwin:*:*)
+	UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
+	eval $set_cc_for_build
+	if test "$UNAME_PROCESSOR" = unknown ; then
+	    UNAME_PROCESSOR=powerpc
+	fi
+	if test `echo "$UNAME_RELEASE" | sed -e 's/\..*//'` -le 10 ; then
+	    if [ "$CC_FOR_BUILD" != no_compiler_found ]; then
+		if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
+		    (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
+		    grep IS_64BIT_ARCH >/dev/null
+		then
+		    case $UNAME_PROCESSOR in
+			i386) UNAME_PROCESSOR=x86_64 ;;
+			powerpc) UNAME_PROCESSOR=powerpc64 ;;
+		    esac
+		fi
+	    fi
+	elif test "$UNAME_PROCESSOR" = i386 ; then
+	    # Avoid executing cc on OS X 10.9, as it ships with a stub
+	    # that puts up a graphical alert prompting to install
+	    # developer tools.  Any system running Mac OS X 10.7 or
+	    # later (Darwin 11 and later) is required to have a 64-bit
+	    # processor. This is not true of the ARM version of Darwin
+	    # that Apple uses in portable devices.
+	    UNAME_PROCESSOR=x86_64
+	fi
+	echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
+	exit ;;
+    *:procnto*:*:* | *:QNX:[0123456789]*:*)
+	UNAME_PROCESSOR=`uname -p`
+	if test "$UNAME_PROCESSOR" = x86; then
+		UNAME_PROCESSOR=i386
+		UNAME_MACHINE=pc
+	fi
+	echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE}
+	exit ;;
+    *:QNX:*:4*)
+	echo i386-pc-qnx
+	exit ;;
+    NEO-?:NONSTOP_KERNEL:*:*)
+	echo neo-tandem-nsk${UNAME_RELEASE}
+	exit ;;
+    NSE-*:NONSTOP_KERNEL:*:*)
+	echo nse-tandem-nsk${UNAME_RELEASE}
+	exit ;;
+    NSR-?:NONSTOP_KERNEL:*:*)
+	echo nsr-tandem-nsk${UNAME_RELEASE}
+	exit ;;
+    *:NonStop-UX:*:*)
+	echo mips-compaq-nonstopux
+	exit ;;
+    BS2000:POSIX*:*:*)
+	echo bs2000-siemens-sysv
+	exit ;;
+    DS/*:UNIX_System_V:*:*)
+	echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE}
+	exit ;;
+    *:Plan9:*:*)
+	# "uname -m" is not consistent, so use $cputype instead. 386
+	# is converted to i386 for consistency with other x86
+	# operating systems.
+	if test "$cputype" = 386; then
+	    UNAME_MACHINE=i386
+	else
+	    UNAME_MACHINE="$cputype"
+	fi
+	echo ${UNAME_MACHINE}-unknown-plan9
+	exit ;;
+    *:TOPS-10:*:*)
+	echo pdp10-unknown-tops10
+	exit ;;
+    *:TENEX:*:*)
+	echo pdp10-unknown-tenex
+	exit ;;
+    KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
+	echo pdp10-dec-tops20
+	exit ;;
+    XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
+	echo pdp10-xkl-tops20
+	exit ;;
+    *:TOPS-20:*:*)
+	echo pdp10-unknown-tops20
+	exit ;;
+    *:ITS:*:*)
+	echo pdp10-unknown-its
+	exit ;;
+    SEI:*:*:SEIUX)
+	echo mips-sei-seiux${UNAME_RELEASE}
+	exit ;;
+    *:DragonFly:*:*)
+	echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
+	exit ;;
+    *:*VMS:*:*)
+	UNAME_MACHINE=`(uname -p) 2>/dev/null`
+	case "${UNAME_MACHINE}" in
+	    A*) echo alpha-dec-vms ; exit ;;
+	    I*) echo ia64-dec-vms ; exit ;;
+	    V*) echo vax-dec-vms ; exit ;;
+	esac ;;
+    *:XENIX:*:SysV)
+	echo i386-pc-xenix
+	exit ;;
+    i*86:skyos:*:*)
+	echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//'
+	exit ;;
+    i*86:rdos:*:*)
+	echo ${UNAME_MACHINE}-pc-rdos
+	exit ;;
+    i*86:AROS:*:*)
+	echo ${UNAME_MACHINE}-pc-aros
+	exit ;;
+    x86_64:VMkernel:*:*)
+	echo ${UNAME_MACHINE}-unknown-esx
+	exit ;;
+    amd64:Isilon\ OneFS:*:*)
+	echo x86_64-unknown-onefs
+	exit ;;
+esac
+
+cat >&2 <<EOF
+$0: unable to guess system type
+
+This script, last modified $timestamp, has failed to recognize
+the operating system you are using. It is advised that you
+download the most up to date version of the config scripts from
+
+  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess
+and
+  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub
+
+If the version you run ($0) is already up to date, please
+send the following data and any information you think might be
+pertinent to <config-patches@gnu.org> in order to provide the needed
+information to handle your system.
+
+config.guess timestamp = $timestamp
+
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null`
+
+hostinfo               = `(hostinfo) 2>/dev/null`
+/bin/universe          = `(/bin/universe) 2>/dev/null`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null`
+/bin/arch              = `(/bin/arch) 2>/dev/null`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`
+
+UNAME_MACHINE = ${UNAME_MACHINE}
+UNAME_RELEASE = ${UNAME_RELEASE}
+UNAME_SYSTEM  = ${UNAME_SYSTEM}
+UNAME_VERSION = ${UNAME_VERSION}
+EOF
+
+exit 1
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/build/autoconf/config.status.m4 b/build/autoconf/config.status.m4
new file mode 100644
index 000000000..53e274a12
--- /dev/null
+++ b/build/autoconf/config.status.m4
@@ -0,0 +1,182 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dnl For use in AC_SUBST replacement
+define([MOZ_DIVERSION_SUBST], 11)
+
+dnl Replace AC_SUBST to store values in a format suitable for python.
+dnl The necessary comma after the tuple can't be put here because it
+dnl can mess around with things like:
+dnl    AC_SOMETHING(foo,AC_SUBST(),bar)
+define([AC_SUBST],
+[ifdef([AC_SUBST_SET_$1], [m4_fatal([Cannot use AC_SUBST and AC_SUBST_SET on the same variable ($1)])],
+[ifdef([AC_SUBST_LIST_$1], [m4_fatal([Cannot use AC_SUBST and AC_SUBST_LIST on the same variable ($1)])],
+[ifdef([AC_SUBST_$1], ,
+[define([AC_SUBST_$1], )dnl
+AC_DIVERT_PUSH(MOZ_DIVERSION_SUBST)dnl
+    (''' $1 ''', r''' [$]$1 ''')
+AC_DIVERT_POP()dnl
+])])])])
+
+dnl Like AC_SUBST, but makes the value available as a set in python,
+dnl with values got from the value of the environment variable, split on
+dnl whitespaces.
+define([AC_SUBST_SET],
+[ifdef([AC_SUBST_$1], [m4_fatal([Cannot use AC_SUBST and AC_SUBST_SET on the same variable ($1)])],
+[ifdef([AC_SUBST_LIST$1], [m4_fatal([Cannot use AC_SUBST_LIST and AC_SUBST_SET on the same variable ($1)])],
+[ifdef([AC_SUBST_SET_$1], ,
+[define([AC_SUBST_SET_$1], )dnl
+AC_DIVERT_PUSH(MOZ_DIVERSION_SUBST)dnl
+    (''' $1 ''', unique_list(r''' [$]$1 '''.split()))
+AC_DIVERT_POP()dnl
+])])])])
+
+dnl Like AC_SUBST, but makes the value available as a list in python,
+dnl with values got from the value of the environment variable, split on
+dnl whitespaces.
+define([AC_SUBST_LIST],
+[ifdef([AC_SUBST_$1], [m4_fatal([Cannot use AC_SUBST and AC_SUBST_LIST on the same variable ($1)])],
+[ifdef([AC_SUBST_SET_$1], [m4_fatal([Cannot use AC_SUBST_SET and AC_SUBST_LIST on the same variable ($1)])],
+[ifdef([AC_SUBST_LIST_$1], ,
+[define([AC_SUBST_LIST_$1], )dnl
+AC_DIVERT_PUSH(MOZ_DIVERSION_SUBST)dnl
+    (''' $1 ''', list(r''' [$]$1 '''.split()))
+AC_DIVERT_POP()dnl
+])])])])
+
+dnl Ignore AC_SUBSTs for variables we don't have use for but that autoconf
+dnl itself exports.
+define([AC_SUBST_CFLAGS], )
+define([AC_SUBST_CPPFLAGS], )
+define([AC_SUBST_CXXFLAGS], )
+define([AC_SUBST_FFLAGS], )
+define([AC_SUBST_DEFS], )
+define([AC_SUBST_LDFLAGS], )
+define([AC_SUBST_LIBS], )
+
+dnl Wrap AC_DEFINE to store values in a format suitable for python.
+dnl autoconf's AC_DEFINE still needs to be used to fill confdefs.h,
+dnl which is #included during some compile checks.
+dnl The necessary comma after the tuple can't be put here because it
+dnl can mess around with things like:
+dnl    AC_SOMETHING(foo,AC_DEFINE(),bar)
+define([_MOZ_AC_DEFINE], defn([AC_DEFINE]))
+define([AC_DEFINE],
+[cat >> confdefs.pytmp <<\EOF
+    (''' $1 ''', ifelse($#, 2, [r''' $2 '''], $#, 3, [r''' $2 '''], ' 1 '))
+EOF
+ifelse($#, 2, _MOZ_AC_DEFINE([$1], [$2]), $#, 3, _MOZ_AC_DEFINE([$1], [$2], [$3]),_MOZ_AC_DEFINE([$1]))dnl
+])
+
+dnl Wrap AC_DEFINE_UNQUOTED to store values in a format suitable for
+dnl python.
+define([_MOZ_AC_DEFINE_UNQUOTED], defn([AC_DEFINE_UNQUOTED]))
+define([AC_DEFINE_UNQUOTED],
+[cat >> confdefs.pytmp <<EOF
+    (''' $1 ''', ifelse($#, 2, [r''' $2 '''], $#, 3, [r''' $2 '''], ' 1 '))
+EOF
+ifelse($#, 2, _MOZ_AC_DEFINE_UNQUOTED($1, $2), $#, 3, _MOZ_AC_DEFINE_UNQUOTED($1, $2, $3),_MOZ_AC_DEFINE_UNQUOTED($1))dnl
+])
+
+dnl Replace AC_OUTPUT to create and call a python config.status
+define([MOZ_CREATE_CONFIG_STATUS],
+[dnl Top source directory in Windows format (as opposed to msys format).
+WIN_TOP_SRC=
+case "$host_os" in
+mingw*)
+    WIN_TOP_SRC=`cd $srcdir; pwd -W`
+    ;;
+esac
+AC_SUBST(WIN_TOP_SRC)
+
+dnl Used in all Makefile.in files
+top_srcdir=$srcdir
+AC_SUBST(top_srcdir)
+
+dnl Picked from autoconf 2.13
+trap '' 1 2 15
+AC_CACHE_SAVE
+
+trap 'rm -f $CONFIG_STATUS conftest*; exit 1' 1 2 15
+: ${CONFIG_STATUS=./config.data}
+
+dnl We're going to need [ ] for python syntax.
+changequote(<<<, >>>)dnl
+echo creating $CONFIG_STATUS
+
+cat > $CONFIG_STATUS <<EOF
+def unique_list(l):
+    result = []
+    for i in l:
+        if l not in result:
+            result.append(i)
+    return result
+
+dnl All defines and substs are stored with an additional space at the beginning
+dnl and at the end of the string, to avoid any problem with values starting or
+dnl ending with quotes.
+defines = [
+EOF
+
+dnl confdefs.pytmp contains AC_DEFINEs, in the expected format, but
+dnl lacks the final comma (see above).
+sed 's/$/,/' confdefs.pytmp >> $CONFIG_STATUS
+rm confdefs.pytmp confdefs.h
+
+cat >> $CONFIG_STATUS <<\EOF
+]
+
+substs = [
+EOF
+
+dnl The MOZ_DIVERSION_SUBST output diversion contains AC_SUBSTs, in the
+dnl expected format, but lacks the final comma (see above).
+sed 's/$/,/' >> $CONFIG_STATUS <<EOF
+undivert(MOZ_DIVERSION_SUBST)dnl
+EOF
+
+dnl Add in the output from the subconfigure script
+for ac_subst_arg in $_subconfigure_ac_subst_args; do
+  variable='$'$ac_subst_arg
+  echo "    (''' $ac_subst_arg ''', r''' `eval echo $variable` ''')," >> $CONFIG_STATUS
+done
+
+cat >> $CONFIG_STATUS <<\EOF
+]
+
+dnl List of AC_DEFINEs that aren't to be exposed in ALLDEFINES
+non_global_defines = [
+EOF
+
+if test -n "$_NON_GLOBAL_ACDEFINES"; then
+  for var in $_NON_GLOBAL_ACDEFINES; do
+    echo "    '$var'," >> $CONFIG_STATUS
+  done
+fi
+
+cat >> $CONFIG_STATUS <<EOF
+]
+
+flags = [
+undivert(MOZ_DIVERSION_ARGS)dnl
+]
+EOF
+
+changequote([, ])
+])
+
+define([m4_fatal],[
+errprint([$1
+])
+m4exit(1)
+])
+
+define([AC_OUTPUT], [ifelse($#_$1, 1_, [MOZ_CREATE_CONFIG_STATUS()
+MOZ_RUN_CONFIG_STATUS()],
+[m4_fatal([Use CONFIGURE_SUBST_FILES in moz.build files to create substituted files.])]
+)])
+
+define([AC_CONFIG_HEADER],
+[m4_fatal([Use CONFIGURE_DEFINE_FILES in moz.build files to produce header files.])
+])
diff --git a/build/autoconf/config.sub b/build/autoconf/config.sub
new file mode 100755
index 000000000..8d39c4ba3
--- /dev/null
+++ b/build/autoconf/config.sub
@@ -0,0 +1,1815 @@
+#! /bin/sh
+# Configuration validation subroutine script.
+#   Copyright 1992-2016 Free Software Foundation, Inc.
+
+timestamp='2016-03-30'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
+
+
+# Please send patches to <config-patches@gnu.org>.
+#
+# Configuration subroutine to validate and canonicalize a configuration type.
+# Supply the specified configuration type as an argument.
+# If it is invalid, we print an error message on stderr and exit with code 1.
+# Otherwise, we print the canonical config type on stdout and succeed.
+
+# You can get the latest version of this script from:
+# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub
+
+# This file is supposed to be the same for all GNU packages
+# and recognize all the CPU types, system types and aliases
+# that are meaningful with *any* GNU software.
+# Each package is responsible for reporting which valid configurations
+# it does not support.  The user should be able to distinguish
+# a failure to support a valid configuration from a meaningless
+# configuration.
+
+# The goal of this file is to map all the various variations of a given
+# machine specification into a single specification in the form:
+#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or in some cases, the newer four-part form:
+#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# It is wrong to echo any other type of specification.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS
+
+Canonicalize a configuration name.
+
+Operation modes:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.sub ($timestamp)
+
+Copyright 1992-2016 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help"
+       exit 1 ;;
+
+    *local*)
+       # First pass through any local machine types.
+       echo $1
+       exit ;;
+
+    * )
+       break ;;
+  esac
+done
+
+case $# in
+ 0) echo "$me: missing argument$help" >&2
+    exit 1;;
+ 1) ;;
+ *) echo "$me: too many arguments$help" >&2
+    exit 1;;
+esac
+
+# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any).
+# Here we must recognize all the valid KERNEL-OS combinations.
+maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
+case $maybe_os in
+  nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
+  linux-musl* | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
+  knetbsd*-gnu* | netbsd*-gnu* | netbsd*-eabi* | \
+  kopensolaris*-gnu* | \
+  storm-chaos* | os2-emx* | rtmk-nova*)
+    os=-$maybe_os
+    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
+    ;;
+  android-linux)
+    os=-linux-android
+    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`-unknown
+    ;;
+  *)
+    basic_machine=`echo $1 | sed 's/-[^-]*$//'`
+    if [ $basic_machine != $1 ]
+    then os=`echo $1 | sed 's/.*-/-/'`
+    else os=; fi
+    ;;
+esac
+
+### Let's recognize common machines as not being operating systems so
+### that things like config.sub decstation-3100 work.  We also
+### recognize some manufacturers as not being operating systems, so we
+### can provide default operating systems below.
+case $os in
+	-sun*os*)
+		# Prevent following clause from handling this invalid input.
+		;;
+	-dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \
+	-att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \
+	-unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \
+	-convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
+	-c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
+	-harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
+	-apple | -axis | -knuth | -cray | -microblaze*)
+		os=
+		basic_machine=$1
+		;;
+	-bluegene*)
+		os=-cnk
+		;;
+	-sim | -cisco | -oki | -wec | -winbond)
+		os=
+		basic_machine=$1
+		;;
+	-scout)
+		;;
+	-wrs)
+		os=-vxworks
+		basic_machine=$1
+		;;
+	-chorusos*)
+		os=-chorusos
+		basic_machine=$1
+		;;
+	-chorusrdb)
+		os=-chorusrdb
+		basic_machine=$1
+		;;
+	-hiux*)
+		os=-hiuxwe2
+		;;
+	-sco6)
+		os=-sco5v6
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco5)
+		os=-sco3.2v5
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco4)
+		os=-sco3.2v4
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco3.2.[4-9]*)
+		os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco3.2v[4-9]*)
+		# Don't forget version if it is 3.2v4 or newer.
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco5v6*)
+		# Don't forget version if it is 3.2v4 or newer.
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco*)
+		os=-sco3.2v2
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-udk*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-isc)
+		os=-isc2.2
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-clix*)
+		basic_machine=clipper-intergraph
+		;;
+	-isc*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-lynx*178)
+		os=-lynxos178
+		;;
+	-lynx*5)
+		os=-lynxos5
+		;;
+	-lynx*)
+		os=-lynxos
+		;;
+	-ptx*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'`
+		;;
+	-windowsnt*)
+		os=`echo $os | sed -e 's/windowsnt/winnt/'`
+		;;
+	-psos*)
+		os=-psos
+		;;
+	-mint | -mint[0-9]*)
+		basic_machine=m68k-atari
+		os=-mint
+		;;
+esac
+
+# Decode aliases for certain CPU-COMPANY combinations.
+case $basic_machine in
+	# Recognize the basic CPU types without company name.
+	# Some are omitted here because they have special meanings below.
+	1750a | 580 \
+	| a29k \
+	| aarch64 | aarch64_be \
+	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
+	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
+	| am33_2.0 \
+	| arc | arceb \
+	| arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \
+	| avr | avr32 \
+	| ba \
+	| be32 | be64 \
+	| bfin \
+	| c4x | c8051 | clipper \
+	| d10v | d30v | dlx | dsp16xx \
+	| e2k | epiphany \
+	| fido | fr30 | frv | ft32 \
+	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+	| hexagon \
+	| i370 | i860 | i960 | ia64 \
+	| ip2k | iq2000 \
+	| k1om \
+	| le32 | le64 \
+	| lm32 \
+	| m32c | m32r | m32rle | m68000 | m68k | m88k \
+	| maxq | mb | microblaze | microblazeel | mcore | mep | metag \
+	| mips | mipsbe | mipseb | mipsel | mipsle \
+	| mips16 \
+	| mips64 | mips64el \
+	| mips64octeon | mips64octeonel \
+	| mips64orion | mips64orionel \
+	| mips64r5900 | mips64r5900el \
+	| mips64vr | mips64vrel \
+	| mips64vr4100 | mips64vr4100el \
+	| mips64vr4300 | mips64vr4300el \
+	| mips64vr5000 | mips64vr5000el \
+	| mips64vr5900 | mips64vr5900el \
+	| mipsisa32 | mipsisa32el \
+	| mipsisa32r2 | mipsisa32r2el \
+	| mipsisa32r6 | mipsisa32r6el \
+	| mipsisa64 | mipsisa64el \
+	| mipsisa64r2 | mipsisa64r2el \
+	| mipsisa64r6 | mipsisa64r6el \
+	| mipsisa64sb1 | mipsisa64sb1el \
+	| mipsisa64sr71k | mipsisa64sr71kel \
+	| mipsr5900 | mipsr5900el \
+	| mipstx39 | mipstx39el \
+	| mn10200 | mn10300 \
+	| moxie \
+	| mt \
+	| msp430 \
+	| nds32 | nds32le | nds32be \
+	| nios | nios2 | nios2eb | nios2el \
+	| ns16k | ns32k \
+	| open8 | or1k | or1knd | or32 \
+	| pdp10 | pdp11 | pj | pjl \
+	| powerpc | powerpc64 | powerpc64le | powerpcle \
+	| pyramid \
+	| riscv32 | riscv64 \
+	| rl78 | rx \
+	| score \
+	| sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[234]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
+	| sh64 | sh64le \
+	| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
+	| sparcv8 | sparcv9 | sparcv9b | sparcv9v \
+	| spu \
+	| tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \
+	| ubicom32 \
+	| v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \
+	| visium \
+	| we32k \
+	| x86 | xc16x | xstormy16 | xtensa \
+	| z8k | z80)
+		basic_machine=$basic_machine-unknown
+		;;
+	c54x)
+		basic_machine=tic54x-unknown
+		;;
+	c55x)
+		basic_machine=tic55x-unknown
+		;;
+	c6x)
+		basic_machine=tic6x-unknown
+		;;
+	leon|leon[3-9])
+		basic_machine=sparc-$basic_machine
+		;;
+	m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | nvptx | picochip)
+		basic_machine=$basic_machine-unknown
+		os=-none
+		;;
+	m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k)
+		;;
+	ms1)
+		basic_machine=mt-unknown
+		;;
+
+	strongarm | thumb | xscale)
+		basic_machine=arm-unknown
+		;;
+	xgate)
+		basic_machine=$basic_machine-unknown
+		os=-none
+		;;
+	xscaleeb)
+		basic_machine=armeb-unknown
+		;;
+
+	xscaleel)
+		basic_machine=armel-unknown
+		;;
+
+	# We use `pc' rather than `unknown'
+	# because (1) that's what they normally are, and
+	# (2) the word "unknown" tends to confuse beginning users.
+	i*86 | x86_64)
+	  basic_machine=$basic_machine-pc
+	  ;;
+	# Object if more than one company name word.
+	*-*-*)
+		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+		exit 1
+		;;
+	# Recognize the basic CPU types with company name.
+	580-* \
+	| a29k-* \
+	| aarch64-* | aarch64_be-* \
+	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
+	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
+	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* | arceb-* \
+	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
+	| avr-* | avr32-* \
+	| ba-* \
+	| be32-* | be64-* \
+	| bfin-* | bs2000-* \
+	| c[123]* | c30-* | [cjt]90-* | c4x-* \
+	| c8051-* | clipper-* | craynv-* | cydra-* \
+	| d10v-* | d30v-* | dlx-* \
+	| e2k-* | elxsi-* \
+	| f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
+	| h8300-* | h8500-* \
+	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
+	| hexagon-* \
+	| i*86-* | i860-* | i960-* | ia64-* \
+	| ip2k-* | iq2000-* \
+	| k1om-* \
+	| le32-* | le64-* \
+	| lm32-* \
+	| m32c-* | m32r-* | m32rle-* \
+	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
+	| m88110-* | m88k-* | maxq-* | mcore-* | metag-* \
+	| microblaze-* | microblazeel-* \
+	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
+	| mips16-* \
+	| mips64-* | mips64el-* \
+	| mips64octeon-* | mips64octeonel-* \
+	| mips64orion-* | mips64orionel-* \
+	| mips64r5900-* | mips64r5900el-* \
+	| mips64vr-* | mips64vrel-* \
+	| mips64vr4100-* | mips64vr4100el-* \
+	| mips64vr4300-* | mips64vr4300el-* \
+	| mips64vr5000-* | mips64vr5000el-* \
+	| mips64vr5900-* | mips64vr5900el-* \
+	| mipsisa32-* | mipsisa32el-* \
+	| mipsisa32r2-* | mipsisa32r2el-* \
+	| mipsisa32r6-* | mipsisa32r6el-* \
+	| mipsisa64-* | mipsisa64el-* \
+	| mipsisa64r2-* | mipsisa64r2el-* \
+	| mipsisa64r6-* | mipsisa64r6el-* \
+	| mipsisa64sb1-* | mipsisa64sb1el-* \
+	| mipsisa64sr71k-* | mipsisa64sr71kel-* \
+	| mipsr5900-* | mipsr5900el-* \
+	| mipstx39-* | mipstx39el-* \
+	| mmix-* \
+	| mt-* \
+	| msp430-* \
+	| nds32-* | nds32le-* | nds32be-* \
+	| nios-* | nios2-* | nios2eb-* | nios2el-* \
+	| none-* | np1-* | ns16k-* | ns32k-* \
+	| open8-* \
+	| or1k*-* \
+	| orion-* \
+	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
+	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \
+	| pyramid-* \
+	| riscv32-* | riscv64-* \
+	| rl78-* | romp-* | rs6000-* | rx-* \
+	| sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
+	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
+	| sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
+	| sparclite-* \
+	| sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx*-* \
+	| tahoe-* \
+	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
+	| tile*-* \
+	| tron-* \
+	| ubicom32-* \
+	| v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \
+	| vax-* \
+	| visium-* \
+	| we32k-* \
+	| x86-* | x86_64-* | xc16x-* | xps100-* \
+	| xstormy16-* | xtensa*-* \
+	| ymp-* \
+	| z8k-* | z80-*)
+		;;
+	# Recognize the basic CPU types without company name, with glob match.
+	xtensa*)
+		basic_machine=$basic_machine-unknown
+		;;
+	# Recognize the various machine names and aliases which stand
+	# for a CPU type and a company and sometimes even an OS.
+	386bsd)
+		basic_machine=i386-unknown
+		os=-bsd
+		;;
+	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
+		basic_machine=m68000-att
+		;;
+	3b*)
+		basic_machine=we32k-att
+		;;
+	a29khif)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	abacus)
+		basic_machine=abacus-unknown
+		;;
+	adobe68k)
+		basic_machine=m68010-adobe
+		os=-scout
+		;;
+	alliant | fx80)
+		basic_machine=fx80-alliant
+		;;
+	altos | altos3068)
+		basic_machine=m68k-altos
+		;;
+	am29k)
+		basic_machine=a29k-none
+		os=-bsd
+		;;
+	amd64)
+		basic_machine=x86_64-pc
+		;;
+	amd64-*)
+		basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	amdahl)
+		basic_machine=580-amdahl
+		os=-sysv
+		;;
+	amiga | amiga-*)
+		basic_machine=m68k-unknown
+		;;
+	amigaos | amigados)
+		basic_machine=m68k-unknown
+		os=-amigaos
+		;;
+	amigaunix | amix)
+		basic_machine=m68k-unknown
+		os=-sysv4
+		;;
+	apollo68)
+		basic_machine=m68k-apollo
+		os=-sysv
+		;;
+	apollo68bsd)
+		basic_machine=m68k-apollo
+		os=-bsd
+		;;
+	aros)
+		basic_machine=i386-pc
+		os=-aros
+		;;
+	asmjs)
+		basic_machine=asmjs-unknown
+		;;
+	aux)
+		basic_machine=m68k-apple
+		os=-aux
+		;;
+	balance)
+		basic_machine=ns32k-sequent
+		os=-dynix
+		;;
+	blackfin)
+		basic_machine=bfin-unknown
+		os=-linux
+		;;
+	blackfin-*)
+		basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'`
+		os=-linux
+		;;
+	bluegene*)
+		basic_machine=powerpc-ibm
+		os=-cnk
+		;;
+	c54x-*)
+		basic_machine=tic54x-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	c55x-*)
+		basic_machine=tic55x-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	c6x-*)
+		basic_machine=tic6x-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	c90)
+		basic_machine=c90-cray
+		os=-unicos
+		;;
+	cegcc)
+		basic_machine=arm-unknown
+		os=-cegcc
+		;;
+	convex-c1)
+		basic_machine=c1-convex
+		os=-bsd
+		;;
+	convex-c2)
+		basic_machine=c2-convex
+		os=-bsd
+		;;
+	convex-c32)
+		basic_machine=c32-convex
+		os=-bsd
+		;;
+	convex-c34)
+		basic_machine=c34-convex
+		os=-bsd
+		;;
+	convex-c38)
+		basic_machine=c38-convex
+		os=-bsd
+		;;
+	cray | j90)
+		basic_machine=j90-cray
+		os=-unicos
+		;;
+	craynv)
+		basic_machine=craynv-cray
+		os=-unicosmp
+		;;
+	cr16 | cr16-*)
+		basic_machine=cr16-unknown
+		os=-elf
+		;;
+	crds | unos)
+		basic_machine=m68k-crds
+		;;
+	crisv32 | crisv32-* | etraxfs*)
+		basic_machine=crisv32-axis
+		;;
+	cris | cris-* | etrax*)
+		basic_machine=cris-axis
+		;;
+	crx)
+		basic_machine=crx-unknown
+		os=-elf
+		;;
+	da30 | da30-*)
+		basic_machine=m68k-da30
+		;;
+	decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)
+		basic_machine=mips-dec
+		;;
+	decsystem10* | dec10*)
+		basic_machine=pdp10-dec
+		os=-tops10
+		;;
+	decsystem20* | dec20*)
+		basic_machine=pdp10-dec
+		os=-tops20
+		;;
+	delta | 3300 | motorola-3300 | motorola-delta \
+	      | 3300-motorola | delta-motorola)
+		basic_machine=m68k-motorola
+		;;
+	delta88)
+		basic_machine=m88k-motorola
+		os=-sysv3
+		;;
+	dicos)
+		basic_machine=i686-pc
+		os=-dicos
+		;;
+	djgpp)
+		basic_machine=i586-pc
+		os=-msdosdjgpp
+		;;
+	dpx20 | dpx20-*)
+		basic_machine=rs6000-bull
+		os=-bosx
+		;;
+	dpx2* | dpx2*-bull)
+		basic_machine=m68k-bull
+		os=-sysv3
+		;;
+	ebmon29k)
+		basic_machine=a29k-amd
+		os=-ebmon
+		;;
+	elxsi)
+		basic_machine=elxsi-elxsi
+		os=-bsd
+		;;
+	encore | umax | mmax)
+		basic_machine=ns32k-encore
+		;;
+	es1800 | OSE68k | ose68k | ose | OSE)
+		basic_machine=m68k-ericsson
+		os=-ose
+		;;
+	fx2800)
+		basic_machine=i860-alliant
+		;;
+	genix)
+		basic_machine=ns32k-ns
+		;;
+	gmicro)
+		basic_machine=tron-gmicro
+		os=-sysv
+		;;
+	go32)
+		basic_machine=i386-pc
+		os=-go32
+		;;
+	h3050r* | hiux*)
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	h8300hms)
+		basic_machine=h8300-hitachi
+		os=-hms
+		;;
+	h8300xray)
+		basic_machine=h8300-hitachi
+		os=-xray
+		;;
+	h8500hms)
+		basic_machine=h8500-hitachi
+		os=-hms
+		;;
+	harris)
+		basic_machine=m88k-harris
+		os=-sysv3
+		;;
+	hp300-*)
+		basic_machine=m68k-hp
+		;;
+	hp300bsd)
+		basic_machine=m68k-hp
+		os=-bsd
+		;;
+	hp300hpux)
+		basic_machine=m68k-hp
+		os=-hpux
+		;;
+	hp3k9[0-9][0-9] | hp9[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hp9k2[0-9][0-9] | hp9k31[0-9])
+		basic_machine=m68000-hp
+		;;
+	hp9k3[2-9][0-9])
+		basic_machine=m68k-hp
+		;;
+	hp9k6[0-9][0-9] | hp6[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hp9k7[0-79][0-9] | hp7[0-79][0-9])
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k78[0-9] | hp78[0-9])
+		# FIXME: really hppa2.0-hp
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
+		# FIXME: really hppa2.0-hp
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[0-9][13679] | hp8[0-9][13679])
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[0-9][0-9] | hp8[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hppa-next)
+		os=-nextstep3
+		;;
+	hppaosf)
+		basic_machine=hppa1.1-hp
+		os=-osf
+		;;
+	hppro)
+		basic_machine=hppa1.1-hp
+		os=-proelf
+		;;
+	i370-ibm* | ibm*)
+		basic_machine=i370-ibm
+		;;
+	i*86v32)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv32
+		;;
+	i*86v4*)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv4
+		;;
+	i*86v)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv
+		;;
+	i*86sol2)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-solaris2
+		;;
+	i386mach)
+		basic_machine=i386-mach
+		os=-mach
+		;;
+	i386-vsta | vsta)
+		basic_machine=i386-unknown
+		os=-vsta
+		;;
+	iris | iris4d)
+		basic_machine=mips-sgi
+		case $os in
+		    -irix*)
+			;;
+		    *)
+			os=-irix4
+			;;
+		esac
+		;;
+	isi68 | isi)
+		basic_machine=m68k-isi
+		os=-sysv
+		;;
+	leon-*|leon[3-9]-*)
+		basic_machine=sparc-`echo $basic_machine | sed 's/-.*//'`
+		;;
+	m68knommu)
+		basic_machine=m68k-unknown
+		os=-linux
+		;;
+	m68knommu-*)
+		basic_machine=m68k-`echo $basic_machine | sed 's/^[^-]*-//'`
+		os=-linux
+		;;
+	m88k-omron*)
+		basic_machine=m88k-omron
+		;;
+	magnum | m3230)
+		basic_machine=mips-mips
+		os=-sysv
+		;;
+	merlin)
+		basic_machine=ns32k-utek
+		os=-sysv
+		;;
+	microblaze*)
+		basic_machine=microblaze-xilinx
+		;;
+	mingw64)
+		basic_machine=x86_64-pc
+		os=-mingw64
+		;;
+	mingw32)
+		basic_machine=i686-pc
+		os=-mingw32
+		;;
+	mingw32ce)
+		basic_machine=arm-unknown
+		os=-mingw32ce
+		;;
+	miniframe)
+		basic_machine=m68000-convergent
+		;;
+	*mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*)
+		basic_machine=m68k-atari
+		os=-mint
+		;;
+	mips3*-*)
+		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
+		;;
+	mips3*)
+		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown
+		;;
+	monitor)
+		basic_machine=m68k-rom68k
+		os=-coff
+		;;
+	morphos)
+		basic_machine=powerpc-unknown
+		os=-morphos
+		;;
+	moxiebox)
+		basic_machine=moxie-unknown
+		os=-moxiebox
+		;;
+	msdos)
+		basic_machine=i386-pc
+		os=-msdos
+		;;
+	ms1-*)
+		basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'`
+		;;
+	msys)
+		basic_machine=i686-pc
+		os=-msys
+		;;
+	mvs)
+		basic_machine=i370-ibm
+		os=-mvs
+		;;
+	nacl)
+		basic_machine=le32-unknown
+		os=-nacl
+		;;
+	ncr3000)
+		basic_machine=i486-ncr
+		os=-sysv4
+		;;
+	netbsd386)
+		basic_machine=i386-unknown
+		os=-netbsd
+		;;
+	netwinder)
+		basic_machine=armv4l-rebel
+		os=-linux
+		;;
+	news | news700 | news800 | news900)
+		basic_machine=m68k-sony
+		os=-newsos
+		;;
+	news1000)
+		basic_machine=m68030-sony
+		os=-newsos
+		;;
+	news-3600 | risc-news)
+		basic_machine=mips-sony
+		os=-newsos
+		;;
+	necv70)
+		basic_machine=v70-nec
+		os=-sysv
+		;;
+	next | m*-next )
+		basic_machine=m68k-next
+		case $os in
+		    -nextstep* )
+			;;
+		    -ns2*)
+		      os=-nextstep2
+			;;
+		    *)
+		      os=-nextstep3
+			;;
+		esac
+		;;
+	nh3000)
+		basic_machine=m68k-harris
+		os=-cxux
+		;;
+	nh[45]000)
+		basic_machine=m88k-harris
+		os=-cxux
+		;;
+	nindy960)
+		basic_machine=i960-intel
+		os=-nindy
+		;;
+	mon960)
+		basic_machine=i960-intel
+		os=-mon960
+		;;
+	nonstopux)
+		basic_machine=mips-compaq
+		os=-nonstopux
+		;;
+	np1)
+		basic_machine=np1-gould
+		;;
+	neo-tandem)
+		basic_machine=neo-tandem
+		;;
+	nse-tandem)
+		basic_machine=nse-tandem
+		;;
+	nsr-tandem)
+		basic_machine=nsr-tandem
+		;;
+	op50n-* | op60c-*)
+		basic_machine=hppa1.1-oki
+		os=-proelf
+		;;
+	openrisc | openrisc-*)
+		basic_machine=or32-unknown
+		;;
+	os400)
+		basic_machine=powerpc-ibm
+		os=-os400
+		;;
+	OSE68000 | ose68000)
+		basic_machine=m68000-ericsson
+		os=-ose
+		;;
+	os68k)
+		basic_machine=m68k-none
+		os=-os68k
+		;;
+	pa-hitachi)
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	paragon)
+		basic_machine=i860-intel
+		os=-osf
+		;;
+	parisc)
+		basic_machine=hppa-unknown
+		os=-linux
+		;;
+	parisc-*)
+		basic_machine=hppa-`echo $basic_machine | sed 's/^[^-]*-//'`
+		os=-linux
+		;;
+	pbd)
+		basic_machine=sparc-tti
+		;;
+	pbb)
+		basic_machine=m68k-tti
+		;;
+	pc532 | pc532-*)
+		basic_machine=ns32k-pc532
+		;;
+	pc98)
+		basic_machine=i386-pc
+		;;
+	pc98-*)
+		basic_machine=i386-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentium | p5 | k5 | k6 | nexgen | viac3)
+		basic_machine=i586-pc
+		;;
+	pentiumpro | p6 | 6x86 | athlon | athlon_*)
+		basic_machine=i686-pc
+		;;
+	pentiumii | pentium2 | pentiumiii | pentium3)
+		basic_machine=i686-pc
+		;;
+	pentium4)
+		basic_machine=i786-pc
+		;;
+	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
+		basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentiumpro-* | p6-* | 6x86-* | athlon-*)
+		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentium4-*)
+		basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pn)
+		basic_machine=pn-gould
+		;;
+	power)	basic_machine=power-ibm
+		;;
+	ppc | ppcbe)	basic_machine=powerpc-unknown
+		;;
+	ppc-* | ppcbe-*)
+		basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppcle | powerpclittle | ppc-le | powerpc-little)
+		basic_machine=powerpcle-unknown
+		;;
+	ppcle-* | powerpclittle-*)
+		basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppc64)	basic_machine=powerpc64-unknown
+		;;
+	ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppc64le | powerpc64little | ppc64-le | powerpc64-little)
+		basic_machine=powerpc64le-unknown
+		;;
+	ppc64le-* | powerpc64little-*)
+		basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ps2)
+		basic_machine=i386-ibm
+		;;
+	pw32)
+		basic_machine=i586-unknown
+		os=-pw32
+		;;
+	rdos | rdos64)
+		basic_machine=x86_64-pc
+		os=-rdos
+		;;
+	rdos32)
+		basic_machine=i386-pc
+		os=-rdos
+		;;
+	rom68k)
+		basic_machine=m68k-rom68k
+		os=-coff
+		;;
+	rm[46]00)
+		basic_machine=mips-siemens
+		;;
+	rtpc | rtpc-*)
+		basic_machine=romp-ibm
+		;;
+	s390 | s390-*)
+		basic_machine=s390-ibm
+		;;
+	s390x | s390x-*)
+		basic_machine=s390x-ibm
+		;;
+	sa29200)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	sb1)
+		basic_machine=mipsisa64sb1-unknown
+		;;
+	sb1el)
+		basic_machine=mipsisa64sb1el-unknown
+		;;
+	sde)
+		basic_machine=mipsisa32-sde
+		os=-elf
+		;;
+	sei)
+		basic_machine=mips-sei
+		os=-seiux
+		;;
+	sequent)
+		basic_machine=i386-sequent
+		;;
+	sh)
+		basic_machine=sh-hitachi
+		os=-hms
+		;;
+	sh5el)
+		basic_machine=sh5le-unknown
+		;;
+	sh64)
+		basic_machine=sh64-unknown
+		;;
+	sparclite-wrs | simso-wrs)
+		basic_machine=sparclite-wrs
+		os=-vxworks
+		;;
+	sps7)
+		basic_machine=m68k-bull
+		os=-sysv2
+		;;
+	spur)
+		basic_machine=spur-unknown
+		;;
+	st2000)
+		basic_machine=m68k-tandem
+		;;
+	stratus)
+		basic_machine=i860-stratus
+		os=-sysv4
+		;;
+	strongarm-* | thumb-*)
+		basic_machine=arm-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	sun2)
+		basic_machine=m68000-sun
+		;;
+	sun2os3)
+		basic_machine=m68000-sun
+		os=-sunos3
+		;;
+	sun2os4)
+		basic_machine=m68000-sun
+		os=-sunos4
+		;;
+	sun3os3)
+		basic_machine=m68k-sun
+		os=-sunos3
+		;;
+	sun3os4)
+		basic_machine=m68k-sun
+		os=-sunos4
+		;;
+	sun4os3)
+		basic_machine=sparc-sun
+		os=-sunos3
+		;;
+	sun4os4)
+		basic_machine=sparc-sun
+		os=-sunos4
+		;;
+	sun4sol2)
+		basic_machine=sparc-sun
+		os=-solaris2
+		;;
+	sun3 | sun3-*)
+		basic_machine=m68k-sun
+		;;
+	sun4)
+		basic_machine=sparc-sun
+		;;
+	sun386 | sun386i | roadrunner)
+		basic_machine=i386-sun
+		;;
+	sv1)
+		basic_machine=sv1-cray
+		os=-unicos
+		;;
+	symmetry)
+		basic_machine=i386-sequent
+		os=-dynix
+		;;
+	t3e)
+		basic_machine=alphaev5-cray
+		os=-unicos
+		;;
+	t90)
+		basic_machine=t90-cray
+		os=-unicos
+		;;
+	tile*)
+		basic_machine=$basic_machine-unknown
+		os=-linux-gnu
+		;;
+	tx39)
+		basic_machine=mipstx39-unknown
+		;;
+	tx39el)
+		basic_machine=mipstx39el-unknown
+		;;
+	toad1)
+		basic_machine=pdp10-xkl
+		os=-tops20
+		;;
+	tower | tower-32)
+		basic_machine=m68k-ncr
+		;;
+	tpf)
+		basic_machine=s390x-ibm
+		os=-tpf
+		;;
+	udi29k)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	ultra3)
+		basic_machine=a29k-nyu
+		os=-sym1
+		;;
+	v810 | necv810)
+		basic_machine=v810-nec
+		os=-none
+		;;
+	vaxv)
+		basic_machine=vax-dec
+		os=-sysv
+		;;
+	vms)
+		basic_machine=vax-dec
+		os=-vms
+		;;
+	vpp*|vx|vx-*)
+		basic_machine=f301-fujitsu
+		;;
+	vxworks960)
+		basic_machine=i960-wrs
+		os=-vxworks
+		;;
+	vxworks68)
+		basic_machine=m68k-wrs
+		os=-vxworks
+		;;
+	vxworks29k)
+		basic_machine=a29k-wrs
+		os=-vxworks
+		;;
+	w65*)
+		basic_machine=w65-wdc
+		os=-none
+		;;
+	w89k-*)
+		basic_machine=hppa1.1-winbond
+		os=-proelf
+		;;
+	xbox)
+		basic_machine=i686-pc
+		os=-mingw32
+		;;
+	xps | xps100)
+		basic_machine=xps100-honeywell
+		;;
+	xscale-* | xscalee[bl]-*)
+		basic_machine=`echo $basic_machine | sed 's/^xscale/arm/'`
+		;;
+	ymp)
+		basic_machine=ymp-cray
+		os=-unicos
+		;;
+	z8k-*-coff)
+		basic_machine=z8k-unknown
+		os=-sim
+		;;
+	z80-*-coff)
+		basic_machine=z80-unknown
+		os=-sim
+		;;
+	none)
+		basic_machine=none-none
+		os=-none
+		;;
+
+# Here we handle the default manufacturer of certain CPU types.  It is in
+# some cases the only manufacturer, in others, it is the most popular.
+	w89k)
+		basic_machine=hppa1.1-winbond
+		;;
+	op50n)
+		basic_machine=hppa1.1-oki
+		;;
+	op60c)
+		basic_machine=hppa1.1-oki
+		;;
+	romp)
+		basic_machine=romp-ibm
+		;;
+	mmix)
+		basic_machine=mmix-knuth
+		;;
+	rs6000)
+		basic_machine=rs6000-ibm
+		;;
+	vax)
+		basic_machine=vax-dec
+		;;
+	pdp10)
+		# there are many clones, so DEC is not a safe bet
+		basic_machine=pdp10-unknown
+		;;
+	pdp11)
+		basic_machine=pdp11-dec
+		;;
+	we32k)
+		basic_machine=we32k-att
+		;;
+	sh[1234] | sh[24]a | sh[24]aeb | sh[34]eb | sh[1234]le | sh[23]ele)
+		basic_machine=sh-unknown
+		;;
+	sparc | sparcv8 | sparcv9 | sparcv9b | sparcv9v)
+		basic_machine=sparc-sun
+		;;
+	cydra)
+		basic_machine=cydra-cydrome
+		;;
+	orion)
+		basic_machine=orion-highlevel
+		;;
+	orion105)
+		basic_machine=clipper-highlevel
+		;;
+	mac | mpw | mac-mpw)
+		basic_machine=m68k-apple
+		;;
+	pmac | pmac-mpw)
+		basic_machine=powerpc-apple
+		;;
+	*-unknown)
+		# Make sure to match an already-canonicalized machine name.
+		;;
+	*)
+		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+		exit 1
+		;;
+esac
+
+# Here we canonicalize certain aliases for manufacturers.
+case $basic_machine in
+	*-digital*)
+		basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'`
+		;;
+	*-commodore*)
+		basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'`
+		;;
+	*)
+		;;
+esac
+
+# Decode manufacturer-specific aliases for certain operating systems.
+
+if [ x"$os" != x"" ]
+then
+case $os in
+	# First match some system type aliases
+	# that might get confused with valid system types.
+	# -solaris* is a basic system type, with this one exception.
+	-auroraux)
+		os=-auroraux
+		;;
+	-solaris1 | -solaris1.*)
+		os=`echo $os | sed -e 's|solaris1|sunos4|'`
+		;;
+	-solaris)
+		os=-solaris2
+		;;
+	-svr4*)
+		os=-sysv4
+		;;
+	-unixware*)
+		os=-sysv4.2uw
+		;;
+	-gnu/linux*)
+		os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`
+		;;
+	# First accept the basic system types.
+	# The portable systems comes first.
+	# Each alternative MUST END IN A *, to match a version number.
+	# -sysv* is not here because it comes later, after sysvr4.
+	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
+	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -cnk* | -sunos | -sunos[34]*\
+	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -auroraux* | -solaris* \
+	      | -sym* | -kopensolaris* | -plan9* \
+	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
+	      | -aos* | -aros* | -cloudabi* | -sortix* \
+	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
+	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
+	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
+	      | -bitrig* | -openbsd* | -solidbsd* | -libertybsd* \
+	      | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
+	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
+	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
+	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
+	      | -chorusos* | -chorusrdb* | -cegcc* \
+	      | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+	      | -mingw32* | -mingw64* | -linux-gnu* | -linux-android* \
+	      | -linux-newlib* | -linux-musl* | -linux-uclibc* \
+	      | -uxpv* | -beos* | -mpeix* | -udk* | -moxiebox* \
+	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
+	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
+	      | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
+	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
+	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
+	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
+	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es* \
+	      | -onefs* | -tirtos*)
+	# Remember, each alternative MUST END IN *, to match a version number.
+		;;
+	-qnx*)
+		case $basic_machine in
+		    x86-* | i*86-*)
+			;;
+		    *)
+			os=-nto$os
+			;;
+		esac
+		;;
+	-nto-qnx*)
+		;;
+	-nto*)
+		os=`echo $os | sed -e 's|nto|nto-qnx|'`
+		;;
+	-sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \
+	      | -windows* | -osx | -abug | -netware* | -os9* | -beos* | -haiku* \
+	      | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*)
+		;;
+	-mac*)
+		os=`echo $os | sed -e 's|mac|macos|'`
+		;;
+	-linux-dietlibc)
+		os=-linux-dietlibc
+		;;
+	-linux*)
+		os=`echo $os | sed -e 's|linux|linux-gnu|'`
+		;;
+	-sunos5*)
+		os=`echo $os | sed -e 's|sunos5|solaris2|'`
+		;;
+	-sunos6*)
+		os=`echo $os | sed -e 's|sunos6|solaris3|'`
+		;;
+	-opened*)
+		os=-openedition
+		;;
+	-os400*)
+		os=-os400
+		;;
+	-wince*)
+		os=-wince
+		;;
+	-osfrose*)
+		os=-osfrose
+		;;
+	-osf*)
+		os=-osf
+		;;
+	-utek*)
+		os=-bsd
+		;;
+	-dynix*)
+		os=-bsd
+		;;
+	-acis*)
+		os=-aos
+		;;
+	-atheos*)
+		os=-atheos
+		;;
+	-syllable*)
+		os=-syllable
+		;;
+	-386bsd)
+		os=-bsd
+		;;
+	-ctix* | -uts*)
+		os=-sysv
+		;;
+	-nova*)
+		os=-rtmk-nova
+		;;
+	-ns2 )
+		os=-nextstep2
+		;;
+	-nsk*)
+		os=-nsk
+		;;
+	# Preserve the version number of sinix5.
+	-sinix5.*)
+		os=`echo $os | sed -e 's|sinix|sysv|'`
+		;;
+	-sinix*)
+		os=-sysv4
+		;;
+	-tpf*)
+		os=-tpf
+		;;
+	-triton*)
+		os=-sysv3
+		;;
+	-oss*)
+		os=-sysv3
+		;;
+	-svr4)
+		os=-sysv4
+		;;
+	-svr3)
+		os=-sysv3
+		;;
+	-sysvr4)
+		os=-sysv4
+		;;
+	# This must come after -sysvr4.
+	-sysv*)
+		;;
+	-ose*)
+		os=-ose
+		;;
+	-es1800*)
+		os=-ose
+		;;
+	-xenix)
+		os=-xenix
+		;;
+	-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+		os=-mint
+		;;
+	-aros*)
+		os=-aros
+		;;
+	-zvmoe)
+		os=-zvmoe
+		;;
+	-dicos*)
+		os=-dicos
+		;;
+	-nacl*)
+		;;
+	-ios)
+		;;
+	-none)
+		;;
+	*)
+		# Get rid of the `-' at the beginning of $os.
+		os=`echo $os | sed 's/[^-]*-//'`
+		echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2
+		exit 1
+		;;
+esac
+else
+
+# Here we handle the default operating systems that come with various machines.
+# The value should be what the vendor currently ships out the door with their
+# machine or put another way, the most popular os provided with the machine.
+
+# Note that if you're going to try to match "-MANUFACTURER" here (say,
+# "-sun"), then you have to tell the case statement up towards the top
+# that MANUFACTURER isn't an operating system.  Otherwise, code above
+# will signal an error saying that MANUFACTURER isn't an operating
+# system, and we'll never get to this point.
+
+case $basic_machine in
+	score-*)
+		os=-elf
+		;;
+	spu-*)
+		os=-elf
+		;;
+	*-acorn)
+		os=-riscix1.2
+		;;
+	arm*-rebel)
+		os=-linux
+		;;
+	arm*-semi)
+		os=-aout
+		;;
+	c4x-* | tic4x-*)
+		os=-coff
+		;;
+	c8051-*)
+		os=-elf
+		;;
+	hexagon-*)
+		os=-elf
+		;;
+	tic54x-*)
+		os=-coff
+		;;
+	tic55x-*)
+		os=-coff
+		;;
+	tic6x-*)
+		os=-coff
+		;;
+	# This must come before the *-dec entry.
+	pdp10-*)
+		os=-tops20
+		;;
+	pdp11-*)
+		os=-none
+		;;
+	*-dec | vax-*)
+		os=-ultrix4.2
+		;;
+	m68*-apollo)
+		os=-domain
+		;;
+	i386-sun)
+		os=-sunos4.0.2
+		;;
+	m68000-sun)
+		os=-sunos3
+		;;
+	m68*-cisco)
+		os=-aout
+		;;
+	mep-*)
+		os=-elf
+		;;
+	mips*-cisco)
+		os=-elf
+		;;
+	mips*-*)
+		os=-elf
+		;;
+	or32-*)
+		os=-coff
+		;;
+	*-tti)	# must be before sparc entry or we get the wrong os.
+		os=-sysv3
+		;;
+	sparc-* | *-sun)
+		os=-sunos4.1.1
+		;;
+	*-be)
+		os=-beos
+		;;
+	*-haiku)
+		os=-haiku
+		;;
+	*-ibm)
+		os=-aix
+		;;
+	*-knuth)
+		os=-mmixware
+		;;
+	*-wec)
+		os=-proelf
+		;;
+	*-winbond)
+		os=-proelf
+		;;
+	*-oki)
+		os=-proelf
+		;;
+	*-hp)
+		os=-hpux
+		;;
+	*-hitachi)
+		os=-hiux
+		;;
+	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
+		os=-sysv
+		;;
+	*-cbm)
+		os=-amigaos
+		;;
+	*-dg)
+		os=-dgux
+		;;
+	*-dolphin)
+		os=-sysv3
+		;;
+	m68k-ccur)
+		os=-rtu
+		;;
+	m88k-omron*)
+		os=-luna
+		;;
+	*-next )
+		os=-nextstep
+		;;
+	*-sequent)
+		os=-ptx
+		;;
+	*-crds)
+		os=-unos
+		;;
+	*-ns)
+		os=-genix
+		;;
+	i370-*)
+		os=-mvs
+		;;
+	*-next)
+		os=-nextstep3
+		;;
+	*-gould)
+		os=-sysv
+		;;
+	*-highlevel)
+		os=-bsd
+		;;
+	*-encore)
+		os=-bsd
+		;;
+	*-sgi)
+		os=-irix
+		;;
+	*-siemens)
+		os=-sysv4
+		;;
+	*-masscomp)
+		os=-rtu
+		;;
+	f30[01]-fujitsu | f700-fujitsu)
+		os=-uxpv
+		;;
+	*-rom68k)
+		os=-coff
+		;;
+	*-*bug)
+		os=-coff
+		;;
+	*-apple)
+		os=-macos
+		;;
+	*-atari*)
+		os=-mint
+		;;
+	*)
+		os=-none
+		;;
+esac
+fi
+
+# Here we handle the case where we know the os, and the CPU type, but not the
+# manufacturer.  We pick the logical manufacturer.
+vendor=unknown
+case $basic_machine in
+	*-unknown)
+		case $os in
+			-riscix*)
+				vendor=acorn
+				;;
+			-sunos*)
+				vendor=sun
+				;;
+			-cnk*|-aix*)
+				vendor=ibm
+				;;
+			-beos*)
+				vendor=be
+				;;
+			-hpux*)
+				vendor=hp
+				;;
+			-mpeix*)
+				vendor=hp
+				;;
+			-hiux*)
+				vendor=hitachi
+				;;
+			-unos*)
+				vendor=crds
+				;;
+			-dgux*)
+				vendor=dg
+				;;
+			-luna*)
+				vendor=omron
+				;;
+			-genix*)
+				vendor=ns
+				;;
+			-mvs* | -opened*)
+				vendor=ibm
+				;;
+			-os400*)
+				vendor=ibm
+				;;
+			-ptx*)
+				vendor=sequent
+				;;
+			-tpf*)
+				vendor=ibm
+				;;
+			-vxsim* | -vxworks* | -windiss*)
+				vendor=wrs
+				;;
+			-aux*)
+				vendor=apple
+				;;
+			-hms*)
+				vendor=hitachi
+				;;
+			-mpw* | -macos*)
+				vendor=apple
+				;;
+			-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+				vendor=atari
+				;;
+			-vos*)
+				vendor=stratus
+				;;
+		esac
+		basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"`
+		;;
+esac
+
+echo $basic_machine$os
+exit
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/build/autoconf/expandlibs.m4 b/build/autoconf/expandlibs.m4
new file mode 100644
index 000000000..898e5ce01
--- /dev/null
+++ b/build/autoconf/expandlibs.m4
@@ -0,0 +1,66 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+AC_DEFUN([MOZ_EXPAND_LIBS],
+[
+dnl ========================================================
+dnl =
+dnl = Check what kind of list files are supported by the
+dnl = linker
+dnl =
+dnl ========================================================
+
+AC_CACHE_CHECK(what kind of list files are supported by the linker,
+    EXPAND_LIBS_LIST_STYLE,
+    [echo "int main() {return 0;}" > conftest.${ac_ext}
+     if AC_TRY_COMMAND(${CC-cc} -o conftest.${OBJ_SUFFIX} -c $CFLAGS $CPPFLAGS conftest.${ac_ext} 1>&5) && test -s conftest.${OBJ_SUFFIX}; then
+         echo "INPUT(conftest.${OBJ_SUFFIX})" > conftest.list
+         if AC_TRY_COMMAND(${CC-cc} -o conftest${ac_exeext} $LDFLAGS conftest.list $LIBS 1>&5) && test -s conftest${ac_exeext}; then
+             EXPAND_LIBS_LIST_STYLE=linkerscript
+         else
+             echo "conftest.${OBJ_SUFFIX}" > conftest.list
+             dnl -filelist is for the OS X linker.  We need to try -filelist
+             dnl first because clang understands @file, but may pass an
+             dnl oversized argument list to the linker depending on the
+             dnl contents of @file.
+             if AC_TRY_COMMAND(${CC-cc} -o conftest${ac_exeext} $LDFLAGS [-Wl,-filelist,conftest.list] $LIBS 1>&5) && test -s conftest${ac_exeext}; then
+                 EXPAND_LIBS_LIST_STYLE=filelist
+             elif AC_TRY_COMMAND(${CC-cc} -o conftest${ac_exeext} $LDFLAGS @conftest.list $LIBS 1>&5) && test -s conftest${ac_exeext}; then
+                 EXPAND_LIBS_LIST_STYLE=list
+             else
+                 EXPAND_LIBS_LIST_STYLE=none
+             fi
+         fi
+     else
+         dnl We really don't expect to get here, but just in case
+         AC_ERROR([couldn't compile a simple C file])
+     fi
+     rm -rf conftest*])
+
+LIBS_DESC_SUFFIX=desc
+AC_SUBST(LIBS_DESC_SUFFIX)
+AC_SUBST(EXPAND_LIBS_LIST_STYLE)
+
+if test "$GCC_USE_GNU_LD"; then
+    AC_CACHE_CHECK(what kind of ordering can be done with the linker,
+        EXPAND_LIBS_ORDER_STYLE,
+        [> conftest.order
+         _SAVE_LDFLAGS="$LDFLAGS"
+         LDFLAGS="${LDFLAGS} -Wl,--section-ordering-file,conftest.order"
+         AC_TRY_LINK([], [],
+             EXPAND_LIBS_ORDER_STYLE=section-ordering-file,
+             EXPAND_LIBS_ORDER_STYLE=)
+         LDFLAGS="$_SAVE_LDFLAGS"
+         if test -z "$EXPAND_LIBS_ORDER_STYLE"; then
+             if AC_TRY_COMMAND(${CC-cc} ${DSO_LDOPTS} ${LDFLAGS} -o ${DLL_PREFIX}conftest${DLL_SUFFIX} -Wl,--verbose 2> /dev/null | sed -n '/^===/,/^===/p' | grep '\.text'); then
+                 EXPAND_LIBS_ORDER_STYLE=linkerscript
+             else
+                 EXPAND_LIBS_ORDER_STYLE=none
+             fi
+             rm -f ${DLL_PREFIX}conftest${DLL_SUFFIX}
+         fi])
+fi
+AC_SUBST(EXPAND_LIBS_ORDER_STYLE)
+
+])
diff --git a/build/autoconf/frameptr.m4 b/build/autoconf/frameptr.m4
new file mode 100644
index 000000000..e7e50330e
--- /dev/null
+++ b/build/autoconf/frameptr.m4
@@ -0,0 +1,44 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dnl Set MOZ_FRAMEPTR_FLAGS to the flags that should be used for enabling or
+dnl disabling frame pointers in this architecture based on the configure
+dnl options
+
+AC_DEFUN([MOZ_SET_FRAMEPTR_FLAGS], [
+  case "$target" in
+  *android*)
+    unwind_tables="-funwind-tables"
+    ;;
+  esac
+  if test "$GNU_CC"; then
+    MOZ_ENABLE_FRAME_PTR="-fno-omit-frame-pointer $unwind_tables"
+    MOZ_DISABLE_FRAME_PTR="-fomit-frame-pointer"
+    if test "$CPU_ARCH" = arm; then
+      # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54398
+      MOZ_ENABLE_FRAME_PTR="$unwind_tables"
+    fi
+  else
+    case "$target" in
+    dnl Oy (Frame-Pointer Omission) is only support on x86 compilers
+    *-mingw32*)
+      MOZ_ENABLE_FRAME_PTR="-Oy-"
+      MOZ_DISABLE_FRAME_PTR="-Oy"
+    ;;
+    esac
+  fi
+
+  # If we are debugging, profiling, using sanitizers, or on win32 we want a
+  # frame pointer.
+  if test -z "$MOZ_OPTIMIZE" -o \
+          -n "$MOZ_PROFILING" -o \
+          -n "$MOZ_DEBUG" -o \
+          -n "$MOZ_MSAN" -o \
+          -n "$MOZ_ASAN" -o \
+          "$OS_ARCH:$CPU_ARCH" = "WINNT:x86"; then
+    MOZ_FRAMEPTR_FLAGS="$MOZ_ENABLE_FRAME_PTR"
+  else
+    MOZ_FRAMEPTR_FLAGS="$MOZ_DISABLE_FRAME_PTR"
+  fi
+])
diff --git a/build/autoconf/hooks.m4 b/build/autoconf/hooks.m4
new file mode 100644
index 000000000..5c921b549
--- /dev/null
+++ b/build/autoconf/hooks.m4
@@ -0,0 +1,82 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dnl Wrap AC_INIT_PREPARE to add the above trap.
+define([_MOZ_AC_INIT_PREPARE], defn([AC_INIT_PREPARE]))
+define([AC_INIT_PREPARE],
+[_MOZ_AC_INIT_PREPARE($1)
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+> subconfigures
+> skip_subconfigures
+])
+
+define([AC_OUTPUT_SUBDIRS],
+[for moz_config_dir in $1; do
+  _CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+  case "$moz_config_dir" in
+  *:*)
+    objdir=$(echo $moz_config_dir | awk -F: '{print [$]2}')
+    ;;
+  *)
+    objdir=$moz_config_dir
+    ;;
+  esac
+  dnl Because config.status, storing AC_SUBSTs, is written before any
+  dnl subconfigure runs, we need to use a file. Moreover, some subconfigures
+  dnl are started from a subshell, and variable modifications from a subshell
+  dnl wouldn't be preserved.
+  echo $objdir >> subconfigures
+
+  dumpenv="true | "
+  case "$host" in
+  *-mingw*)
+    _CONFIG_SHELL=$(cd $(dirname $_CONFIG_SHELL); pwd -W)/$(basename $_CONFIG_SHELL)
+    if test ! -e "$_CONFIG_SHELL" -a -e "${_CONFIG_SHELL}.exe"; then
+        _CONFIG_SHELL="${_CONFIG_SHELL}.exe"
+    fi
+    dnl Yes, this is horrible. But since msys doesn't preserve environment
+    dnl variables and command line arguments as they are when transitioning
+    dnl from msys (this script) to python (below), we have to resort to hacks,
+    dnl storing the environment and command line arguments from a msys process
+    dnl (perl), and reading it from python.
+    dumpenv="$PERL $_topsrcdir/build/win32/dumpenv4python.pl $ac_configure_args | "
+    ;;
+  esac
+
+  eval $dumpenv $PYTHON $_topsrcdir/build/subconfigure.py --prepare "$srcdir" "$moz_config_dir" "$_CONFIG_SHELL" $ac_configure_args ifelse($2,,,--cache-file="$2")
+
+  dnl Actual subconfigure execution happens in MOZ_RUN_CONFIG_STATUS
+done
+])
+
+define([AC_OUTPUT_SUBDIRS_NOW],
+[
+for moz_config_dir_ in $1; do
+  AC_OUTPUT_SUBDIRS($moz_config_dir_,$2)
+  tail -1 subconfigures >> skip_subconfigures
+  MOZ_RUN_SUBCONFIGURES(`tail -1 skip_subconfigures`)
+done
+])
+
+define([MOZ_RUN_SUBCONFIGURES],
+[dnl Execute subconfigure, unless --no-recursion was passed to configure.
+if test "$no_recursion" != yes; then
+  trap '' EXIT
+  if ! $PYTHON $_topsrcdir/build/subconfigure.py $1; then
+      exit 1
+  fi
+fi
+])
+
+define([MOZ_RUN_ALL_SUBCONFIGURES],[
+MOZ_RUN_SUBCONFIGURES([--list subconfigures --skip skip_subconfigures])
+])
+
+dnl Print error messages in config.log as well as stderr
+define([AC_MSG_ERROR],
+[{ echo "configure: error: $1" 1>&2; echo "configure: error: $1" 1>&5; exit 1; }])
diff --git a/build/autoconf/hotfixes.m4 b/build/autoconf/hotfixes.m4
new file mode 100644
index 000000000..9c8362041
--- /dev/null
+++ b/build/autoconf/hotfixes.m4
@@ -0,0 +1,23 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dnl Set of hotfixes to address issues in autoconf 2.13
+
+dnl Divert AC_CHECK_FUNC so that the #includes it uses can't interfere
+dnl with the function it tests.
+dnl So, when testing e.g. posix_memalign, any #include that AC_CHECK_FUNC
+dnl prints is replaced with:
+dnl   #define posix_memalign innocuous_posix_memalign
+dnl   #include "theinclude"
+dnl   #undef posix_memalign
+dnl This avoids double declaration of that function when the header normally
+dnl declares it, while the test itself is just expecting the function not to be
+dnl declared at all, and declares it differently (which doesn't matter for the
+dnl test itself).
+dnl More recent versions of autoconf are essentially doing this.
+define([_AC_CHECK_FUNC],defn([AC_CHECK_FUNC]))dnl
+define([AC_CHECK_FUNC], [dnl
+patsubst(_AC_CHECK_FUNC($@), [#include.*$], [#define $1 innocuous_$1
+\&
+#undef $1])])dnl
diff --git a/build/autoconf/icu.m4 b/build/autoconf/icu.m4
new file mode 100644
index 000000000..794ddcdf4
--- /dev/null
+++ b/build/autoconf/icu.m4
@@ -0,0 +1,111 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dnl Set the MOZ_ICU_VERSION variable to denote the current version of the
+dnl ICU library, as well as a few other things.
+
+AC_DEFUN([MOZ_CONFIG_ICU], [
+
+ICU_LIB_NAMES=
+MOZ_SYSTEM_ICU=
+MOZ_ARG_WITH_BOOL(system-icu,
+[  --with-system-icu
+                          Use system ICU (located with pkgconfig)],
+    MOZ_SYSTEM_ICU=1)
+
+if test -n "$MOZ_SYSTEM_ICU"; then
+    PKG_CHECK_MODULES(MOZ_ICU, icu-i18n >= 58.1)
+    CFLAGS="$CFLAGS $MOZ_ICU_CFLAGS"
+    CXXFLAGS="$CXXFLAGS $MOZ_ICU_CFLAGS"
+fi
+
+AC_SUBST(MOZ_SYSTEM_ICU)
+
+MOZ_ARG_WITH_STRING(intl-api,
+[  --with-intl-api, --with-intl-api=build, --without-intl-api
+    Determine the status of the ECMAScript Internationalization API.  The first
+    (or lack of any of these) builds and exposes the API.  The second builds it
+    but doesn't use ICU or expose the API to script.  The third doesn't build
+    ICU at all.],
+    _INTL_API=$withval)
+
+ENABLE_INTL_API=
+EXPOSE_INTL_API=
+case "$_INTL_API" in
+no)
+    ;;
+build)
+    ENABLE_INTL_API=1
+    ;;
+yes)
+    ENABLE_INTL_API=1
+    EXPOSE_INTL_API=1
+    ;;
+*)
+    AC_MSG_ERROR([Invalid value passed to --with-intl-api: $_INTL_API])
+    ;;
+esac
+
+if test -n "$ENABLE_INTL_API"; then
+    USE_ICU=1
+fi
+
+if test -n "$EXPOSE_INTL_API"; then
+    AC_DEFINE(EXPOSE_INTL_API)
+fi
+
+if test -n "$ENABLE_INTL_API"; then
+    AC_DEFINE(ENABLE_INTL_API)
+fi
+
+dnl Settings for the implementation of the ECMAScript Internationalization API
+if test -n "$USE_ICU"; then
+    icudir="$_topsrcdir/intl/icu/source"
+    if test ! -d "$icudir"; then
+        icudir="$_topsrcdir/../../intl/icu/source"
+        if test ! -d "$icudir"; then
+            AC_MSG_ERROR([Cannot find the ICU directory])
+        fi
+    fi
+
+    version=`sed -n 's/^[[[:space:]]]*#[[:space:]]*define[[:space:]][[:space:]]*U_ICU_VERSION_MAJOR_NUM[[:space:]][[:space:]]*\([0-9][0-9]*\)[[:space:]]*$/\1/p' "$icudir/common/unicode/uvernum.h"`
+    if test x"$version" = x; then
+       AC_MSG_ERROR([cannot determine icu version number from uvernum.h header file $lineno])
+    fi
+    MOZ_ICU_VERSION="$version"
+
+    # TODO: the l is actually endian-dependent
+    # We could make this set as 'l' or 'b' for little or big, respectively,
+    # but we'd need to check in a big-endian version of the file.
+    ICU_DATA_FILE="icudt${version}l.dat"
+
+    dnl We won't build ICU data as a separate file when building
+    dnl JS standalone so that embedders don't have to deal with it.
+    dnl We also don't do it on Windows because sometimes the file goes
+    dnl missing -- possibly due to overzealous antivirus software? --
+    dnl which prevents the browser from starting up :(
+    if test -z "$JS_STANDALONE" -a -z "$MOZ_SYSTEM_ICU" -a "$OS_TARGET" != WINNT -a "$MOZ_WIDGET_TOOLKIT" != "android"; then
+        MOZ_ICU_DATA_ARCHIVE=1
+    else
+        MOZ_ICU_DATA_ARCHIVE=
+    fi
+fi
+
+AC_SUBST(MOZ_ICU_VERSION)
+AC_SUBST(ENABLE_INTL_API)
+AC_SUBST(USE_ICU)
+AC_SUBST(ICU_DATA_FILE)
+AC_SUBST(MOZ_ICU_DATA_ARCHIVE)
+
+if test -n "$USE_ICU" -a -z "$MOZ_SYSTEM_ICU"; then
+    if test -z "$YASM" -a -z "$GNU_AS" -a "$COMPILE_ENVIRONMENT"; then
+      AC_MSG_ERROR([Building ICU requires either yasm or a GNU assembler. If you do not have either of those available for this platform you must use --without-intl-api])
+    fi
+    dnl We build ICU as a static library.
+    AC_DEFINE(U_STATIC_IMPLEMENTATION)
+    dnl Source files that use ICU should have control over which parts of the ICU
+    dnl namespace they want to use.
+    AC_DEFINE(U_USING_ICU_NAMESPACE,0)
+fi
+])
diff --git a/build/autoconf/install-sh b/build/autoconf/install-sh
new file mode 100755
index 000000000..a4be13e59
--- /dev/null
+++ b/build/autoconf/install-sh
@@ -0,0 +1,123 @@
+#!/bin/sh
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+#
+# install - install a program, script, or datafile
+# This comes from X11R5; it is not part of GNU.
+#
+# $XConsortium: install.sh,v 1.2 89/12/18 14:47:22 jim Exp $
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.
+#
+
+
+# set DOITPROG to echo to test this script
+
+# Don't use :- since 4.3BSD and earlier shells don't like it.
+doit="${DOITPROG-}"
+
+
+# put in absolute paths if you don't have them in your path; or use env. vars.
+
+mvprog="${MVPROG-mv}"
+cpprog="${CPPROG-cp}"
+chmodprog="${CHMODPROG-chmod}"
+chownprog="${CHOWNPROG-chown}"
+chgrpprog="${CHGRPPROG-chgrp}"
+stripprog="${STRIPPROG-strip}"
+rmprog="${RMPROG-rm}"
+
+instcmd="$mvprog"
+chmodcmd=""
+chowncmd=""
+chgrpcmd=""
+stripcmd=""
+rmcmd="$rmprog -f"
+mvcmd="$mvprog"
+src=""
+dst=""
+
+while [ x"$1" != x ]; do
+    case $1 in
+	-c) instcmd="$cpprog"
+	    shift
+	    continue;;
+
+	-m) chmodcmd="$chmodprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-o) chowncmd="$chownprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-g) chgrpcmd="$chgrpprog $2"
+	    shift
+	    shift
+	    continue;;
+
+	-s) stripcmd="$stripprog"
+	    shift
+	    continue;;
+
+	*)  if [ x"$src" = x ]
+	    then
+		src=$1
+	    else
+		dst=$1
+	    fi
+	    shift
+	    continue;;
+    esac
+done
+
+if [ x"$src" = x ]
+then
+	echo "install:  no input file specified"
+	exit 1
+fi
+
+if [ x"$dst" = x ]
+then
+	echo "install:  no destination specified"
+	exit 1
+fi
+
+
+# If destination is a directory, append the input filename; if your system
+# does not like double slashes in filenames, you may need to add some logic
+
+if [ -d $dst ]
+then
+	dst="$dst"/`basename $src`
+fi
+
+# Make a temp file name in the proper directory.
+
+dstdir=`dirname $dst`
+dsttmp=$dstdir/#inst.$$#
+
+# Move or copy the file name to the temp name
+
+$doit $instcmd $src $dsttmp
+
+# and set any options; do chmod last to preserve setuid bits
+
+if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; fi
+if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; fi
+if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; fi
+if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; fi
+
+# Now rename the file to the real destination.
+
+$doit $rmcmd $dst
+$doit $mvcmd $dsttmp $dst
+
+
+exit 0
diff --git a/build/autoconf/ios.m4 b/build/autoconf/ios.m4
new file mode 100644
index 000000000..b341cda89
--- /dev/null
+++ b/build/autoconf/ios.m4
@@ -0,0 +1,108 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+AC_DEFUN([MOZ_IOS_PATH_PROG],
+[
+changequote({,})
+_prog_name=ifelse($2, {}, `echo $1 | tr "[:upper:]" "[:lower:]"`, $2)
+changequote([,])
+AC_CACHE_CHECK([for $_prog_name in iOS SDK],
+ac_cv_ios_path_$1,
+[
+_path=`xcrun --sdk $ios_sdk --find $_prog_name 2>/dev/null`
+_res=$?
+if test $_res -ne 0; then
+   AC_MSG_ERROR([Could not find '$_prog_name' in the iOS SDK])
+fi
+ac_cv_ios_path_$1=$_path
+])
+$1="${ac_cv_ios_path_$1}$3"
+])
+
+AC_DEFUN([MOZ_IOS_SDK],
+[
+
+MOZ_ARG_WITH_STRING(ios-sdk,
+[  --with-ios-sdk=TYPE
+                          Type of iOS SDK to use (iphonesimulator, iphoneos)
+                          and optionally version (like iphoneos8.2)],
+    ios_sdk=$withval)
+
+MOZ_ARG_ENABLE_STRING(ios-target,
+                      [  --enable-ios-target=VER (default=8.0)
+                          Set the minimum iOS version needed at runtime],
+                      [_IOS_TARGET=$enableval])
+_IOS_TARGET_DEFAULT=8.0
+
+case "$target" in
+arm*-apple-darwin*)
+    if test -z "$ios_sdk" -o "$ios_sdk" = "yes"; then
+       ios_sdk=iphoneos
+    fi
+    case "$ios_sdk" in
+         iphoneos*)
+                ios_target_arg="-miphoneos-version-min"
+                ;;
+         *)
+                AC_MSG_ERROR([Only 'iphoneos' SDKs are valid when targeting iOS device, don't know what to do with '$ios_sdk'.])
+                ;;
+    esac
+    ;;
+*-apple-darwin*)
+    ios_target_arg="-mios-simulator-version-min"
+    case "$ios_sdk" in
+         # Empty SDK is okay, this might be an OS X desktop build.
+         ""|iphonesimulator*)
+                ;;
+         # Default to iphonesimulator
+         yes)
+                ios_sdk=iphonesimulator
+                ;;
+         *)
+                AC_MSG_ERROR([Only 'iphonesimulator' SDKs are valid when targeting iOS simulator.])
+                ;;
+    esac
+    ;;
+esac
+
+
+if test -n "$ios_sdk"; then
+   if test -z "$_IOS_TARGET"; then
+      _IOS_TARGET=$_IOS_TARGET_DEFAULT
+      ios_target_arg="${ios_target_arg}=${_IOS_TARGET}"
+   fi
+   # Ensure that xcrun knows where this SDK is.
+   ios_sdk_path=`xcrun --sdk $ios_sdk --show-sdk-path 2>/dev/null`
+   _ret=$?
+   if test $_ret -ne 0; then
+      AC_MSG_ERROR([iOS SDK '$ios_sdk' could not be found.])
+   fi
+   MOZ_IOS=1
+   export HOST_CC=clang
+   export HOST_CXX=clang++
+   # Add isysroot, arch, and ios target arguments
+   case "$target_cpu" in
+        arm*)
+                ARGS="-arch armv7"
+                ;;
+        *)
+                # Unfortunately simulator builds need this.
+                export CROSS_COMPILE=1
+                ;;
+   esac
+   ARGS=" $ARGS -isysroot $ios_sdk_path $ios_target_arg"
+   # Now find our tools
+   MOZ_IOS_PATH_PROG(CC, clang, $ARGS)
+   MOZ_IOS_PATH_PROG(CXX, clang++, $ARGS)
+   export CPP="$CC -E"
+   export LD="$CXX"
+   MOZ_IOS_PATH_PROG(AR)
+   MOZ_IOS_PATH_PROG(AS, as, $ARGS)
+   MOZ_IOS_PATH_PROG(OTOOL)
+   MOZ_IOS_PATH_PROG(STRIP)
+   export PKG_CONFIG_PATH=${ios_sdk_path}/usr/lib/pkgconfig/
+fi
+
+AC_SUBST(MOZ_IOS)
+])
diff --git a/build/autoconf/jemalloc.m4 b/build/autoconf/jemalloc.m4
new file mode 100644
index 000000000..3b9c603f7
--- /dev/null
+++ b/build/autoconf/jemalloc.m4
@@ -0,0 +1,114 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+AC_DEFUN([MOZ_SUBCONFIGURE_JEMALLOC], [
+
+if test "$MOZ_BUILD_APP" != js -o -n "$JS_STANDALONE"; then
+
+  # Run jemalloc configure script
+
+  if test -z "$MOZ_SYSTEM_JEMALLOC" -a "$MOZ_MEMORY" && test -n "$MOZ_JEMALLOC4" -o -n "$MOZ_REPLACE_MALLOC"; then
+    ac_configure_args="--build=$build --host=$target --enable-stats --with-jemalloc-prefix=je_ --disable-valgrind"
+    # We're using memalign for _aligned_malloc in memory/build/mozmemory_wrap.c
+    # on Windows, so just export memalign on all platforms.
+    ac_configure_args="$ac_configure_args ac_cv_func_memalign=yes"
+    if test -n "$MOZ_REPLACE_MALLOC"; then
+      # When using replace_malloc, we always want valloc exported from jemalloc.
+      ac_configure_args="$ac_configure_args ac_cv_func_valloc=yes"
+      if test "${OS_ARCH}" = Darwin; then
+        # We also need to enable pointer validation on Mac because jemalloc's
+        # zone allocator is not used.
+        ac_configure_args="$ac_configure_args --enable-ivsalloc"
+      fi
+    fi
+    if test -n "$MOZ_JEMALLOC4"; then
+      case "${OS_ARCH}" in
+        WINNT|Darwin)
+          # We want jemalloc functions to be kept hidden on both Mac and Windows
+          # See memory/build/mozmemory_wrap.h for details.
+          ac_configure_args="$ac_configure_args --without-export"
+          ;;
+      esac
+      if test "${OS_ARCH}" = WINNT; then
+        # Lazy lock initialization doesn't play well with lazy linking of
+        # mozglue.dll on Windows XP (leads to startup crash), so disable it.
+        ac_configure_args="$ac_configure_args --disable-lazy-lock"
+
+        # 64-bit Windows builds require a minimum 16-byte alignment.
+        if test -n "$HAVE_64BIT_BUILD"; then
+          ac_configure_args="$ac_configure_args --with-lg-tiny-min=4"
+        fi
+      fi
+    elif test "${OS_ARCH}" = Darwin; then
+      # When building as a replace-malloc lib, disabling the zone allocator
+      # forces to use pthread_atfork.
+      ac_configure_args="$ac_configure_args --disable-zone-allocator"
+    fi
+    _MANGLE="malloc posix_memalign aligned_alloc calloc realloc free memalign valloc malloc_usable_size"
+    JEMALLOC_WRAPPER=
+    if test -z "$MOZ_REPLACE_MALLOC"; then
+      case "$OS_ARCH" in
+        Linux|DragonFly|FreeBSD|NetBSD|OpenBSD)
+          MANGLE=$_MANGLE
+          ;;
+      esac
+    elif test -z "$MOZ_JEMALLOC4"; then
+      MANGLE=$_MANGLE
+      JEMALLOC_WRAPPER=replace_
+    fi
+    if test -n "$MANGLE"; then
+      MANGLED=
+      for mangle in ${MANGLE}; do
+        if test -n "$MANGLED"; then
+          MANGLED="$mangle:$JEMALLOC_WRAPPER$mangle,$MANGLED"
+        else
+          MANGLED="$mangle:$JEMALLOC_WRAPPER$mangle"
+        fi
+      done
+      ac_configure_args="$ac_configure_args --with-mangling=$MANGLED"
+    fi
+    unset CONFIG_FILES
+    if test -z "$MOZ_TLS"; then
+      ac_configure_args="$ac_configure_args --disable-tls"
+    fi
+    EXTRA_CFLAGS="$CFLAGS"
+    for var in AS CC CXX CPP LD AR RANLIB STRIP CPPFLAGS EXTRA_CFLAGS LDFLAGS; do
+      ac_configure_args="$ac_configure_args $var='`eval echo \\${${var}}`'"
+    done
+
+    # jemalloc's configure assumes that if you have CFLAGS set at all, you set
+    # all the flags necessary to configure jemalloc, which is not likely to be
+    # the case on Windows if someone is building Firefox with flags set in
+    # their mozconfig.
+    if test "$_MSC_VER"; then
+       ac_configure_args="$ac_configure_args CFLAGS="
+    fi
+
+    # Force disable DSS support in jemalloc.
+    ac_configure_args="$ac_configure_args ac_cv_func_sbrk=false"
+
+    # Make Linux builds munmap freed chunks instead of recycling them.
+    ac_configure_args="$ac_configure_args --enable-munmap"
+
+    # Disable cache oblivious behavior that appears to have a performance
+    # impact on Firefox.
+    ac_configure_args="$ac_configure_args --disable-cache-oblivious"
+
+    if ! test -e memory/jemalloc; then
+      mkdir -p memory/jemalloc
+    fi
+
+    # jemalloc's configure runs git to determine the version. But when building
+    # from a gecko git clone, the git commands it uses is going to pick gecko's
+    # information, not jemalloc's, which is useless. So pretend we don't have git
+    # at all. That will make jemalloc's configure pick the in-tree VERSION file.
+    (PATH="$srcdir/memory/jemalloc/helper:$PATH";
+    AC_OUTPUT_SUBDIRS(memory/jemalloc/src)
+    ) || exit 1
+    ac_configure_args="$_SUBDIR_CONFIG_ARGS"
+  fi
+
+fi
+
+])
diff --git a/build/autoconf/lto.m4 b/build/autoconf/lto.m4
new file mode 100644
index 000000000..572a04b48
--- /dev/null
+++ b/build/autoconf/lto.m4
@@ -0,0 +1,19 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dnl check if the build is using lto. This is really primitive and only detects llvm based
+dnl compilers right now.
+AC_DEFUN([MOZ_DOING_LTO],
+[
+  cat > conftest.c <<EOF
+                  int foo = 1;
+EOF
+  $1=no
+  if ${CC-cc} ${CFLAGS} -S conftest.c -o conftest.s >/dev/null 2>&1; then
+    if grep '^target triple =' conftest.s; then
+      $1=yes
+    fi
+  fi
+  rm -f conftest.[cs]
+])
diff --git a/build/autoconf/mozheader.m4 b/build/autoconf/mozheader.m4
new file mode 100644
index 000000000..e99e35a40
--- /dev/null
+++ b/build/autoconf/mozheader.m4
@@ -0,0 +1,32 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dnl MOZ_CHECK_HEADER(HEADER-FILE, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
+AC_DEFUN([MOZ_CHECK_HEADER],
+[ dnl Do the transliteration at runtime so arg 1 can be a shell variable.
+  ac_safe=`echo "$1" | sed 'y%./+-%__p_%'`
+  AC_MSG_CHECKING([for $1])
+  AC_CACHE_VAL(ac_cv_header_$ac_safe,
+ [ AC_TRY_COMPILE([$4
+#include <$1>], ,
+                  eval "ac_cv_header_$ac_safe=yes",
+                  eval "ac_cv_header_$ac_safe=no") ])
+  if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+    AC_MSG_RESULT(yes)
+    ifelse([$2], , :, [$2])
+  else
+    AC_MSG_RESULT(no)
+    ifelse([$3], , , [$3])
+  fi
+])
+
+dnl MOZ_CHECK_HEADERS(HEADER-FILE... [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, INCLUDES]]])
+AC_DEFUN([MOZ_CHECK_HEADERS],
+[ for ac_hdr in $1
+  do
+    MOZ_CHECK_HEADER($ac_hdr,
+                     [ ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+                       AC_DEFINE_UNQUOTED($ac_tr_hdr) $2], $3, [$4])
+  done
+])
diff --git a/build/autoconf/mozprog.m4 b/build/autoconf/mozprog.m4
new file mode 100644
index 000000000..08747b495
--- /dev/null
+++ b/build/autoconf/mozprog.m4
@@ -0,0 +1,42 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+AC_DEFUN([MOZ_PROG_CHECKMSYS],
+[AC_REQUIRE([AC_INIT_BINSH])dnl
+if test `uname -s | grep -c MINGW 2>/dev/null` != "0"; then
+  msyshost=1
+fi
+])
+
+AC_DEFUN([MOZ_PATH_PROG],
+[ AC_PATH_PROG($1,$2,$3,$4)
+  if test "$msyshost"; then
+    case "[$]$1" in
+    /*)
+      tmp_DIRNAME=`dirname "[$]$1"`
+      tmp_BASENAME=`basename "[$]$1"`
+      tmp_PWD=`cd "$tmp_DIRNAME" && pwd -W`
+      $1="$tmp_PWD/$tmp_BASENAME"
+      if test -e "[$]$1.exe"; then
+        $1="[$]$1.exe"
+      fi
+    esac
+  fi
+])
+
+AC_DEFUN([MOZ_PATH_PROGS],
+[  AC_PATH_PROGS($1,$2,$3,$4)
+  if test "$msyshost"; then
+    case "[$]$1" in
+    /*)
+      tmp_DIRNAME=`dirname "[$]$1"`
+      tmp_BASENAME=`basename "[$]$1"`
+      tmp_PWD=`cd "$tmp_DIRNAME" && pwd -W`
+      $1="$tmp_PWD/$tmp_BASENAME"
+      if test -e "[$]$1.exe"; then
+        $1="[$]$1.exe"
+      fi
+    esac
+  fi
+])
diff --git a/build/autoconf/nspr-build.m4 b/build/autoconf/nspr-build.m4
new file mode 100644
index 000000000..b733579c2
--- /dev/null
+++ b/build/autoconf/nspr-build.m4
@@ -0,0 +1,200 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+AC_DEFUN([MOZ_CONFIG_NSPR], [
+
+ifelse([$1],,define(CONFIGURING_JS,yes))
+
+dnl Possible ways this can be called:
+dnl   from toplevel configure:
+dnl     JS_STANDALONE=  MOZ_BUILD_APP!=js
+dnl   from js/src/configure invoked by toplevel configure:
+dnl     JS_STANDALONE=  MOZ_BUILD_APP=js
+dnl   from standalone js/src/configure:
+dnl     JS_STANDALONE=1 MOZ_BUILD_APP=js
+
+dnl ========================================================
+dnl = Find the right NSPR to use.
+dnl ========================================================
+MOZ_ARG_WITH_STRING(nspr-cflags,
+[  --with-nspr-cflags=FLAGS
+                          Pass FLAGS to CC when building code that uses NSPR.
+                          Use this when there's no accurate nspr-config
+                          script available.  This is the case when building
+                          SpiderMonkey as part of the Mozilla tree: the
+                          top-level configure script computes NSPR flags
+                          that accomodate the quirks of that environment.],
+    NSPR_CFLAGS=$withval)
+MOZ_ARG_WITH_STRING(nspr-libs,
+[  --with-nspr-libs=LIBS   Pass LIBS to LD when linking code that uses NSPR.
+                          See --with-nspr-cflags for more details.],
+    NSPR_LIBS=$withval)
+
+ifdef([CONFIGURING_JS],[
+    MOZ_ARG_ENABLE_BOOL(nspr-build,
+[  --enable-nspr-build     Build NSPR from source tree],
+        MOZ_BUILD_NSPR=1,
+        MOZ_BUILD_NSPR=)
+])
+
+if test "$MOZ_BUILD_APP" != js || test -n "$JS_STANDALONE"; then
+  _IS_OUTER_CONFIGURE=1
+fi
+
+MOZ_ARG_WITH_BOOL(system-nspr,
+[  --with-system-nspr      Use an NSPR that is already built and installed.
+                          Use the 'nspr-config' script in the current path,
+                          or look for the script in the directories given with
+                          --with-nspr-exec-prefix or --with-nspr-prefix.
+                          (Those flags are only checked if you specify
+                          --with-system-nspr.)],
+    _USE_SYSTEM_NSPR=1 )
+
+JS_POSIX_NSPR=unset
+ifdef([CONFIGURING_JS],[
+    if test -n "$JS_STANDALONE"; then
+      case "$target" in
+        *linux*|*darwin*|*dragonfly*|*freebsd*|*netbsd*|*openbsd*)
+          if test -z "$_HAS_NSPR"; then
+            JS_POSIX_NSPR_DEFAULT=1
+          fi
+          ;;
+      esac
+    fi
+
+    MOZ_ARG_ENABLE_BOOL(posix-nspr-emulation,
+[  --enable-posix-nspr-emulation
+                          Enable emulation of NSPR for POSIX systems],
+    JS_POSIX_NSPR=1,
+    JS_POSIX_NSPR=)
+])
+
+dnl Pass at most one of
+dnl   --with-system-nspr
+dnl   --with-nspr-cflags/libs
+dnl   --enable-nspr-build
+dnl   --enable-posix-nspr-emulation
+
+AC_MSG_CHECKING([NSPR selection])
+nspr_opts=
+which_nspr=default
+if test -n "$_USE_SYSTEM_NSPR"; then
+    nspr_opts="x$nspr_opts"
+    which_nspr="system"
+fi
+if test -n "$NSPR_CFLAGS" -o -n "$NSPR_LIBS"; then
+    nspr_opts="x$nspr_opts"
+    which_nspr="command-line"
+fi
+if test -n "$MOZ_BUILD_NSPR"; then
+    nspr_opts="x$nspr_opts"
+    which_nspr="source-tree"
+fi
+if test "$JS_POSIX_NSPR" = unset; then
+    JS_POSIX_NSPR=
+else
+    nspr_opts="x$nspr_opts"
+    which_nspr="posix-wrapper"
+fi
+
+if test -z "$nspr_opts"; then
+    if test "$MOZ_BUILD_APP" != js; then
+      dnl Toplevel configure defaults to using nsprpub from the source tree
+      MOZ_BUILD_NSPR=1
+      which_nspr="source-tree"
+    else
+      dnl JS configure defaults to emulated NSPR if available, falling back
+      dnl to nsprpub.
+      JS_POSIX_NSPR="$JS_POSIX_NSPR_DEFAULT"
+      if test -z "$JS_POSIX_NSPR"; then
+        MOZ_BUILD_NSPR=1
+        which_nspr="source-tree"
+      else
+        which_nspr="posix-wrapper"
+      fi
+   fi
+fi
+
+if test -z "$nspr_opts" || test "$nspr_opts" = x; then
+    AC_MSG_RESULT($which_nspr)
+else
+    AC_MSG_ERROR([only one way of using NSPR may be selected. See 'configure --help'.])
+fi
+
+AC_SUBST(MOZ_BUILD_NSPR)
+
+if test "$MOZ_BUILD_APP" = js; then
+  if test "$JS_POSIX_NSPR" = 1; then
+    AC_DEFINE(JS_POSIX_NSPR)
+  fi
+  AC_SUBST(JS_POSIX_NSPR)
+fi
+
+# A (sub)configure invoked by the toplevel configure will always receive
+# --with-nspr-libs on the command line. It will never need to figure out
+# anything itself.
+if test -n "$_IS_OUTER_CONFIGURE"; then
+
+if test -n "$_USE_SYSTEM_NSPR"; then
+    AM_PATH_NSPR($NSPR_MINVER, [MOZ_SYSTEM_NSPR=1], [AC_MSG_ERROR([you do not have NSPR installed or your version is older than $NSPR_MINVER.])])
+fi
+
+if test -n "$MOZ_SYSTEM_NSPR" -o -n "$NSPR_CFLAGS" -o -n "$NSPR_LIBS"; then
+    _SAVE_CFLAGS=$CFLAGS
+    CFLAGS="$CFLAGS $NSPR_CFLAGS"
+    AC_TRY_COMPILE([#include "prtypes.h"],
+                [#ifndef PR_STATIC_ASSERT
+                 #error PR_STATIC_ASSERT not defined or requires including prtypes.h
+                 #endif],
+                ,
+                AC_MSG_ERROR([system NSPR does not support PR_STATIC_ASSERT or including prtypes.h does not provide it]))
+    AC_TRY_COMPILE([#include "prtypes.h"],
+                [#ifndef PR_UINT64
+                 #error PR_UINT64 not defined or requires including prtypes.h
+                 #endif],
+                ,
+                AC_MSG_ERROR([system NSPR does not support PR_UINT64 or including prtypes.h does not provide it]))
+    CFLAGS=$_SAVE_CFLAGS
+elif test -z "$JS_POSIX_NSPR"; then
+    NSPR_INCLUDE_DIR="${DIST}/include/nspr"
+    NSPR_CFLAGS="-I${NSPR_INCLUDE_DIR}"
+    if test -n "$GNU_CC"; then
+        if test -n "$MOZ_FOLD_LIBS"; then
+           NSPR_LIB_DIR=${DIST}/lib
+        else
+           NSPR_LIB_DIR=${DIST}/bin
+        fi
+        NSPR_LIBS="-L${NSPR_LIB_DIR} -lnspr${NSPR_VERSION} -lplc${NSPR_VERSION} -lplds${NSPR_VERSION}"
+    else
+        # NSS needs actual static libs to link to, and this is where they are.
+        NSPR_LIBS="${DIST}/lib/nspr${NSPR_VERSION}.lib ${DIST}/lib/plc${NSPR_VERSION}.lib ${DIST}/lib/plds${NSPR_VERSION}.lib "
+        NSPR_LIB_DIR="${DIST}/lib"
+    fi
+fi
+
+AC_SUBST_LIST(NSPR_CFLAGS)
+AC_SUBST(NSPR_INCLUDE_DIR)
+AC_SUBST(NSPR_LIB_DIR)
+
+PKGCONF_REQUIRES_PRIVATE="Requires.private: nspr"
+if test -n "$MOZ_SYSTEM_NSPR"; then
+    _SAVE_CFLAGS=$CFLAGS
+    CFLAGS="$CFLAGS $NSPR_CFLAGS"
+    AC_TRY_COMPILE([#include "prlog.h"],
+                [#ifndef PR_STATIC_ASSERT
+                 #error PR_STATIC_ASSERT not defined
+                 #endif],
+                ,
+                AC_MSG_ERROR([system NSPR does not support PR_STATIC_ASSERT]))
+    CFLAGS=$_SAVE_CFLAGS
+    # piggy back on $MOZ_SYSTEM_NSPR to set a variable for the nspr check for js.pc
+    PKGCONF_REQUIRES_PRIVATE="Requires.private: nspr >= $NSPR_MINVER"
+elif test -n "$JS_POSIX_NSPR"; then
+    PKGCONF_REQUIRES_PRIVATE=
+fi
+AC_SUBST([PKGCONF_REQUIRES_PRIVATE])
+
+fi # _IS_OUTER_CONFIGURE
+
+])
diff --git a/build/autoconf/nspr.m4 b/build/autoconf/nspr.m4
new file mode 100644
index 000000000..cccc8828e
--- /dev/null
+++ b/build/autoconf/nspr.m4
@@ -0,0 +1,110 @@
+# -*- tab-width: 4; -*-
+# Configure paths for NSPR
+# Public domain - Chris Seawood <cls@seawood.org> 2001-04-05
+# Based upon gtk.m4 (also PD) by Owen Taylor
+
+dnl AM_PATH_NSPR([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
+dnl Test for NSPR, and define NSPR_CFLAGS and NSPR_LIBS
+dnl
+dnl If the nspr-config script is available, use it to find the
+dnl appropriate CFLAGS and LIBS, and to check for the required
+dnl version, and run ACTION-IF-FOUND.
+dnl
+dnl Otherwise, if NO_NSPR_CONFIG_SYSTEM_VERSION is set, we use it,
+dnl NO_NSPR_CONFIG_SYSTEM_CFLAGS, and NO_NSPR_CONFIG_SYSTEM_LIBS to
+dnl provide default values, and run ACTION-IF-FOUND.  (Some systems
+dnl ship NSPR without nspr-config, but can glean the appropriate flags
+dnl and version.)
+dnl
+dnl Otherwise, run ACTION-IF-NOT-FOUND.
+AC_DEFUN([AM_PATH_NSPR],
+[dnl
+
+AC_ARG_WITH(nspr-prefix,
+	[  --with-nspr-prefix=PFX  Prefix where NSPR is installed],
+	nspr_config_prefix="$withval",
+	nspr_config_prefix="")
+
+AC_ARG_WITH(nspr-exec-prefix,
+	[  --with-nspr-exec-prefix=PFX
+                          Exec prefix where NSPR is installed],
+	nspr_config_exec_prefix="$withval",
+	nspr_config_exec_prefix="")
+
+	if test -n "$nspr_config_exec_prefix"; then
+		nspr_config_args="$nspr_config_args --exec-prefix=$nspr_config_exec_prefix"
+		if test -z "$NSPR_CONFIG"; then
+			NSPR_CONFIG=$nspr_config_exec_prefix/bin/nspr-config
+		fi
+	fi
+	if test -n "$nspr_config_prefix"; then
+		nspr_config_args="$nspr_config_args --prefix=$nspr_config_prefix"
+		if test -z "$NSPR_CONFIG"; then
+			NSPR_CONFIG=$nspr_config_prefix/bin/nspr-config
+		fi
+	fi
+
+	unset ac_cv_path_NSPR_CONFIG
+	AC_PATH_PROG(NSPR_CONFIG, nspr-config, no)
+	min_nspr_version=ifelse([$1], ,4.0.0,$1)
+	AC_MSG_CHECKING(for NSPR - version >= $min_nspr_version)
+
+	no_nspr=""
+	if test "$NSPR_CONFIG" != "no"; then
+		NSPR_CFLAGS=`$NSPR_CONFIG $nspr_config_args --cflags`
+		NSPR_LIBS=`$NSPR_CONFIG $nspr_config_args --libs`
+		NSPR_VERSION_STRING=`$NSPR_CONFIG $nspr_config_args --version`	
+	elif test -n "${NO_NSPR_CONFIG_SYSTEM_VERSION}"; then
+	    NSPR_CFLAGS="${NO_NSPR_CONFIG_SYSTEM_CFLAGS}"
+		NSPR_LIBS="${NO_NSPR_CONFIG_SYSTEM_LDFLAGS}"
+		NSPR_VERSION_STRING="$NO_NSPR_CONFIG_SYSTEM_VERSION"
+	else
+	    no_nspr="yes"
+	fi
+
+	if test -z "$no_nspr"; then
+		nspr_config_major_version=`echo $NSPR_VERSION_STRING | \
+			sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\(\.\([[0-9]]*\)\)\{0,1\}/\1/'`
+		nspr_config_minor_version=`echo $NSPR_VERSION_STRING | \
+			sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\(\.\([[0-9]]*\)\)\{0,1\}/\2/'`
+		nspr_config_micro_version=`echo $NSPR_VERSION_STRING | \
+			sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\(\.\([[0-9]]*\)\)\{0,1\}/\4/'`
+		if test -z "$nspr_config_micro_version"; then
+			nspr_config_micro_version="0"
+		fi
+
+		min_nspr_major_version=`echo $min_nspr_version | \
+			sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\(\.\([[0-9]]*\)\)\{0,1\}/\1/'`
+		min_nspr_minor_version=`echo $min_nspr_version | \
+			sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\(\.\([[0-9]]*\)\)\{0,1\}/\2/'`
+		min_nspr_micro_version=`echo $min_nspr_version | \
+			sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\(\.\([[0-9]]*\)\)\{0,1\}/\4/'`
+		if test -z "$min_nspr_micro_version"; then
+			min_nspr_micro_version="0"
+		fi
+
+		if test "$nspr_config_major_version" -ne "$min_nspr_major_version"; then
+			no_nspr="yes"
+		elif test "$nspr_config_major_version" -eq "$min_nspr_major_version" &&
+		     test "$nspr_config_minor_version" -lt "$min_nspr_minor_version"; then
+			no_nspr="yes"
+		elif test "$nspr_config_major_version" -eq "$min_nspr_major_version" &&
+		     test "$nspr_config_minor_version" -eq "$min_nspr_minor_version" &&
+		     test "$nspr_config_micro_version" -lt "$min_nspr_micro_version"; then
+			no_nspr="yes"
+		fi
+	fi
+
+	if test -z "$no_nspr"; then
+		AC_MSG_RESULT(yes)
+		ifelse([$2], , :, [$2])     
+	else
+		AC_MSG_RESULT(no)
+		ifelse([$3], , :, [$3])
+	fi
+
+
+	AC_SUBST_LIST(NSPR_CFLAGS)
+	AC_SUBST_LIST(NSPR_LIBS)
+
+])
diff --git a/build/autoconf/nss.m4 b/build/autoconf/nss.m4
new file mode 100644
index 000000000..07efb0078
--- /dev/null
+++ b/build/autoconf/nss.m4
@@ -0,0 +1,91 @@
+# -*- tab-width: 4; -*-
+# Configure paths for NSS
+# Public domain - Chris Seawood <cls@seawood.org> 2001-04-05
+# Based upon gtk.m4 (also PD) by Owen Taylor
+
+dnl AM_PATH_NSS([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
+dnl Test for NSS, and define NSS_CFLAGS and NSS_LIBS
+AC_DEFUN([AM_PATH_NSS],
+[dnl
+
+AC_ARG_WITH(nss-prefix,
+	[  --with-nss-prefix=PFX   Prefix where NSS is installed],
+	nss_config_prefix="$withval",
+	nss_config_prefix="")
+
+AC_ARG_WITH(nss-exec-prefix,
+	[  --with-nss-exec-prefix=PFX
+                          Exec prefix where NSS is installed],
+	nss_config_exec_prefix="$withval",
+	nss_config_exec_prefix="")
+
+	if test -n "$nss_config_exec_prefix"; then
+		nss_config_args="$nss_config_args --exec-prefix=$nss_config_exec_prefix"
+		if test -z "$NSS_CONFIG"; then
+			NSS_CONFIG=$nss_config_exec_prefix/bin/nss-config
+		fi
+	fi
+	if test -n "$nss_config_prefix"; then
+		nss_config_args="$nss_config_args --prefix=$nss_config_prefix"
+		if test -z "$NSS_CONFIG"; then
+			NSS_CONFIG=$nss_config_prefix/bin/nss-config
+		fi
+	fi
+
+	unset ac_cv_path_NSS_CONFIG
+	AC_PATH_PROG(NSS_CONFIG, nss-config, no)
+	min_nss_version=ifelse([$1], ,3.0.0,$1)
+	AC_MSG_CHECKING(for NSS - version >= $min_nss_version)
+
+	no_nss=""
+	if test "$NSS_CONFIG" = "no"; then
+		no_nss="yes"
+	else
+		NSS_CFLAGS=`$NSS_CONFIG $nss_config_args --cflags`
+		NSS_LIBS=`$NSS_CONFIG $nss_config_args --libs`
+
+		nss_config_major_version=`$NSS_CONFIG $nss_config_args --version | \
+			sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\(\.\([[0-9]]*\)\)\{0,1\}/\1/'`
+		nss_config_minor_version=`$NSS_CONFIG $nss_config_args --version | \
+			sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\(\.\([[0-9]]*\)\)\{0,1\}/\2/'`
+		nss_config_micro_version=`$NSS_CONFIG $nss_config_args --version | \
+			sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\(\.\([[0-9]]*\)\)\{0,1\}/\4/'`
+		if test -z "$nss_config_micro_version"; then
+			nss_config_micro_version="0"
+		fi
+
+		min_nss_major_version=`echo $min_nss_version | \
+			sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\(\.\([[0-9]]*\)\)\{0,1\}/\1/'`
+		min_nss_minor_version=`echo $min_nss_version | \
+			sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\(\.\([[0-9]]*\)\)\{0,1\}/\2/'`
+		min_nss_micro_version=`echo $min_nss_version | \
+			sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\(\.\([[0-9]]*\)\)\{0,1\}/\4/'`
+		if test -z "$min_nss_micro_version"; then
+			min_nss_micro_version="0"
+		fi
+
+		if test "$nss_config_major_version" -lt "$min_nss_major_version"; then
+			no_nss="yes"
+		elif test "$nss_config_major_version" -eq "$min_nss_major_version" &&
+		     test "$nss_config_minor_version" -lt "$min_nss_minor_version"; then
+			no_nss="yes"
+		elif test "$nss_config_major_version" -eq "$min_nss_major_version" &&
+		     test "$nss_config_minor_version" -eq "$min_nss_minor_version" &&
+		     test "$nss_config_micro_version" -lt "$min_nss_micro_version"; then
+			no_nss="yes"
+		fi
+	fi
+
+	if test -z "$no_nss"; then
+		AC_MSG_RESULT(yes)
+		ifelse([$2], , :, [$2])     
+	else
+		AC_MSG_RESULT(no)
+		ifelse([$3], , :, [$3])
+	fi
+
+
+	AC_SUBST_LIST(NSS_CFLAGS)
+	AC_SUBST_LIST(NSS_LIBS)
+
+])
diff --git a/build/autoconf/pkg.m4 b/build/autoconf/pkg.m4
new file mode 100644
index 000000000..ca8ef7e5a
--- /dev/null
+++ b/build/autoconf/pkg.m4
@@ -0,0 +1,61 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4, action-if, action-not)
+# defines GSTUFF_LIBS, GSTUFF_CFLAGS, see pkg-config man page
+# also defines GSTUFF_PKG_ERRORS on error
+# PKG_CONFIG is set by Python configure, if it is empty here it could not
+# be found.
+AC_DEFUN([PKG_CHECK_MODULES],
+[succeeded=no
+
+  if test -z "$PKG_CONFIG"; then
+     echo "*** The pkg-config script could not be found. Make sure it is"
+     echo "*** in your path, or set the PKG_CONFIG environment variable"
+     echo "*** to the full path to pkg-config."
+     echo "*** Or see http://www.freedesktop.org/software/pkgconfig to get pkg-config."
+  else
+     PKG_CONFIG_MIN_VERSION=0.9.0
+     if $PKG_CONFIG --atleast-pkgconfig-version $PKG_CONFIG_MIN_VERSION; then
+        AC_MSG_CHECKING(for $2)
+
+        if $PKG_CONFIG --exists "$2" ; then
+            AC_MSG_RESULT(yes)
+            succeeded=yes
+
+            AC_MSG_CHECKING($1_CFLAGS)
+            $1_CFLAGS=`$PKG_CONFIG --cflags "$2"`
+            AC_MSG_RESULT($$1_CFLAGS)
+
+            AC_MSG_CHECKING($1_LIBS)
+            ## Remove evil flags like -Wl,--export-dynamic
+            $1_LIBS="`$PKG_CONFIG --libs \"$2\" |sed s/-Wl,--export-dynamic//g`"
+            AC_MSG_RESULT($$1_LIBS)
+        else
+            $1_CFLAGS=""
+            $1_LIBS=""
+            ## If we have a custom action on failure, don't print errors, but 
+            ## do set a variable so people can do so.
+            $1_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
+            ifelse([$4], ,echo $$1_PKG_ERRORS,)
+        fi
+
+        AC_SUBST_LIST($1_CFLAGS)
+        AC_SUBST_LIST($1_LIBS)
+     else
+        echo "*** Your version of pkg-config is too old. You need version $PKG_CONFIG_MIN_VERSION or newer."
+        echo "*** See http://www.freedesktop.org/software/pkgconfig"
+     fi
+  fi
+
+  if test $succeeded = yes; then
+     ifelse([$3], , :, [$3])
+  else
+     if test "$COMPILE_ENVIRONMENT"; then 
+       ifelse([$4], , AC_MSG_ERROR([Library requirements ($2) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.]), [$4])
+     fi
+  fi
+])
+
+
diff --git a/build/autoconf/sanitize.m4 b/build/autoconf/sanitize.m4
new file mode 100644
index 000000000..3193d5c62
--- /dev/null
+++ b/build/autoconf/sanitize.m4
@@ -0,0 +1,106 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+AC_DEFUN([MOZ_CONFIG_SANITIZE], [
+
+dnl ========================================================
+dnl = Use Address Sanitizer
+dnl ========================================================
+MOZ_ARG_ENABLE_BOOL(address-sanitizer,
+[  --enable-address-sanitizer       Enable Address Sanitizer (default=no)],
+    MOZ_ASAN=1,
+    MOZ_ASAN= )
+if test -n "$MOZ_ASAN"; then
+    MOZ_LLVM_HACKS=1
+    if test -n "$CLANG_CL"; then
+        # Look for the ASan runtime binary
+        if test "$CPU_ARCH" = "x86_64"; then
+          MOZ_CLANG_RT_ASAN_LIB=clang_rt.asan_dynamic-x86_64.dll
+        else
+          MOZ_CLANG_RT_ASAN_LIB=clang_rt.asan_dynamic-i386.dll
+        fi
+        # We use MOZ_PATH_PROG in order to get a Windows style path.
+        MOZ_PATH_PROG(MOZ_CLANG_RT_ASAN_LIB_PATH, $MOZ_CLANG_RT_ASAN_LIB)
+        if test -z "$MOZ_CLANG_RT_ASAN_LIB_PATH"; then
+            AC_MSG_ERROR([Couldn't find $MOZ_CLANG_RT_ASAN_LIB.  It should be available in the same location as clang-cl.])
+        fi
+        AC_SUBST(MOZ_CLANG_RT_ASAN_LIB_PATH)
+        # Suppressing errors in recompiled code.
+        if test "$OS_ARCH" = "WINNT"; then
+            CFLAGS="-fsanitize-blacklist=$_topsrcdir/build/sanitizers/asan_blacklist_win.txt $CFLAGS"
+            CXXFLAGS="-fsanitize-blacklist=$_topsrcdir/build/sanitizers/asan_blacklist_win.txt $CXXFLAGS"
+        fi
+    fi
+    CFLAGS="-fsanitize=address $CFLAGS"
+    CXXFLAGS="-fsanitize=address $CXXFLAGS"
+    if test -z "$CLANG_CL"; then
+        LDFLAGS="-fsanitize=address $LDFLAGS"
+    fi
+    AC_DEFINE(MOZ_ASAN)
+    MOZ_PATH_PROG(LLVM_SYMBOLIZER, llvm-symbolizer)
+fi
+AC_SUBST(MOZ_ASAN)
+
+dnl ========================================================
+dnl = Use Memory Sanitizer
+dnl ========================================================
+MOZ_ARG_ENABLE_BOOL(memory-sanitizer,
+[  --enable-memory-sanitizer       Enable Memory Sanitizer (default=no)],
+    MOZ_MSAN=1,
+    MOZ_MSAN= )
+if test -n "$MOZ_MSAN"; then
+    MOZ_LLVM_HACKS=1
+    CFLAGS="-fsanitize=memory -fsanitize-memory-track-origins $CFLAGS"
+    CXXFLAGS="-fsanitize=memory -fsanitize-memory-track-origins $CXXFLAGS"
+    if test -z "$CLANG_CL"; then
+        LDFLAGS="-fsanitize=memory -fsanitize-memory-track-origins $LDFLAGS"
+    fi
+    AC_DEFINE(MOZ_MSAN)
+    MOZ_PATH_PROG(LLVM_SYMBOLIZER, llvm-symbolizer)
+fi
+AC_SUBST(MOZ_MSAN)
+
+dnl ========================================================
+dnl = Use Thread Sanitizer
+dnl ========================================================
+MOZ_ARG_ENABLE_BOOL(thread-sanitizer,
+[  --enable-thread-sanitizer       Enable Thread Sanitizer (default=no)],
+   MOZ_TSAN=1,
+   MOZ_TSAN= )
+if test -n "$MOZ_TSAN"; then
+    MOZ_LLVM_HACKS=1
+    CFLAGS="-fsanitize=thread $CFLAGS"
+    CXXFLAGS="-fsanitize=thread $CXXFLAGS"
+    if test -z "$CLANG_CL"; then
+        LDFLAGS="-fsanitize=thread $LDFLAGS"
+    fi
+    AC_DEFINE(MOZ_TSAN)
+    MOZ_PATH_PROG(LLVM_SYMBOLIZER, llvm-symbolizer)
+fi
+AC_SUBST(MOZ_TSAN)
+
+# The LLVM symbolizer is used by all sanitizers
+AC_SUBST(LLVM_SYMBOLIZER)
+
+dnl ========================================================
+dnl = Enable hacks required for LLVM instrumentations
+dnl ========================================================
+MOZ_ARG_ENABLE_BOOL(llvm-hacks,
+[  --enable-llvm-hacks       Enable workarounds required for several LLVM instrumentations (default=no)],
+    MOZ_LLVM_HACKS=1,
+    MOZ_LLVM_HACKS= )
+if test -n "$MOZ_LLVM_HACKS"; then
+    MOZ_NO_WLZDEFS=1
+    MOZ_CFLAGS_NSS=1
+fi
+AC_SUBST(MOZ_NO_WLZDEFS)
+AC_SUBST(MOZ_CFLAGS_NSS)
+
+dnl ========================================================
+dnl = Test for whether the compiler is compatible with the
+dnl = given sanitize options.
+dnl ========================================================
+AC_TRY_LINK(,,,AC_MSG_ERROR([compiler is incompatible with sanitize options]))
+
+])
diff --git a/build/autoconf/subconfigure.m4 b/build/autoconf/subconfigure.m4
new file mode 100644
index 000000000..8e95e014e
--- /dev/null
+++ b/build/autoconf/subconfigure.m4
@@ -0,0 +1,46 @@
+dnl We are not running in a real autoconf environment. So we're using real m4
+dnl here, not the crazier environment that autoconf provides.
+
+dnl Autoconf expects [] for quotes; give it to them
+changequote([, ])
+
+dnl AC_DEFUN is provided to use instead of define in autoconf. Provide it too.
+define([AC_DEFUN], [define($1, [$2])])
+
+dnl AC_ARG_ENABLE(FEATURE, HELP-STRING, IF-TRUE[, IF-FALSE])
+dnl We have to ignore the help string due to how help works in autoconf...
+AC_DEFUN([MOZ_AC_ARG_ENABLE],
+[#] Check whether --enable-[$1] or --disable-[$1] was given.
+[if test "[${enable_]patsubst([$1], -, _)+set}" = set; then
+  enableval="[$enable_]patsubst([$1], -, _)"
+  $3
+ifelse([$4], , , [else
+  $4
+])dnl
+fi
+])
+
+dnl AC_MSG_ERROR(error-description)
+AC_DEFUN([AC_MSG_ERROR], [{ echo "configure: error: $1" 1>&2; exit 1; }])
+
+AC_DEFUN([AC_MSG_WARN],  [ echo "configure: warning: $1" 1>&2 ])
+
+dnl Add the variable to the list of substitution variables
+AC_DEFUN([AC_SUBST],
+[
+_subconfigure_ac_subst_args="$_subconfigure_ac_subst_args $1"
+])
+
+dnl Override for AC_DEFINE.
+AC_DEFUN([AC_DEFINE],
+[
+cat >>confdefs.h <<\EOF
+[#define] $1 ifelse($#, 2, [$2], $#, 3, [$2], 1)
+EOF
+cat >> confdefs.pytmp <<\EOF
+    (''' $1 ''', ifelse($#, 2, [r''' $2 '''], $#, 3, [r''' $2 '''], ' 1 '))
+EOF
+])
+
+dnl AC_OUTPUT_SUBDIRS(subdirectory)
+AC_DEFUN([AC_OUTPUT_SUBDIRS], [do_output_subdirs "$1"])
diff --git a/build/autoconf/toolchain.m4 b/build/autoconf/toolchain.m4
new file mode 100644
index 000000000..3109f5dfc
--- /dev/null
+++ b/build/autoconf/toolchain.m4
@@ -0,0 +1,126 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dnl Several autoconf functions AC_REQUIRE AC_PROG_CPP/AC_PROG_CXXCPP
+dnl or AC_HEADER_STDC, meaning they are called even when we don't call
+dnl them explicitly.
+dnl However, theses checks are not necessary and python configure sets
+dnl the corresponding variables already, so just skip those tests
+dnl entirely.
+define([AC_PROG_CPP],[])
+define([AC_PROG_CXXCPP],[])
+define([AC_HEADER_STDC], [])
+
+AC_DEFUN([MOZ_TOOL_VARIABLES],
+[
+GNU_AS=
+GNU_LD=
+
+GNU_CC=
+GNU_CXX=
+if test "$CC_TYPE" = "gcc"; then
+    GNU_CC=1
+    GNU_CXX=1
+fi
+
+if test "`echo | $AS -o conftest.out -v 2>&1 | grep -c GNU`" != "0"; then
+    GNU_AS=1
+fi
+rm -f conftest.out
+if test "`echo | $LD -v 2>&1 | grep -c GNU`" != "0"; then
+    GNU_LD=1
+fi
+
+CLANG_CC=
+CLANG_CXX=
+CLANG_CL=
+if test "$CC_TYPE" = "clang"; then
+    GNU_CC=1
+    GNU_CXX=1
+    CLANG_CC=1
+    CLANG_CXX=1
+fi
+if test "$CC_TYPE" = "clang-cl"; then
+    CLANG_CL=1
+fi
+
+if test "$GNU_CC"; then
+    if `$CC -print-prog-name=ld` -v 2>&1 | grep -c GNU >/dev/null; then
+        GCC_USE_GNU_LD=1
+    fi
+fi
+
+AC_SUBST(CLANG_CXX)
+AC_SUBST(CLANG_CL)
+])
+
+AC_DEFUN([MOZ_CROSS_COMPILER],
+[
+echo "cross compiling from $host to $target"
+
+if test -z "$HOST_AR_FLAGS"; then
+    HOST_AR_FLAGS="$AR_FLAGS"
+fi
+AC_CHECK_PROGS(HOST_RANLIB, $HOST_RANLIB ranlib, ranlib, :)
+AC_CHECK_PROGS(HOST_AR, $HOST_AR ar, ar, :)
+
+dnl AC_CHECK_PROGS manually goes through $PATH, and as such fails to handle
+dnl absolute or relative paths. Relative paths wouldn't work anyways, but
+dnl absolute paths would. Trick AC_CHECK_PROGS into working in that case by
+dnl adding / to PATH. This is temporary until this moves to moz.configure
+dnl (soon).
+_SAVE_PATH=$PATH
+case "${TOOLCHAIN_PREFIX}" in
+/*)
+    PATH="/:$PATH"
+    ;;
+esac
+AC_PROG_CC
+AC_PROG_CXX
+
+AC_CHECK_PROGS(RANLIB, "${TOOLCHAIN_PREFIX}ranlib", :)
+AC_CHECK_PROGS(AR, "${TOOLCHAIN_PREFIX}ar", :)
+AC_CHECK_PROGS(AS, "${TOOLCHAIN_PREFIX}as", :)
+AC_CHECK_PROGS(LD, "${TOOLCHAIN_PREFIX}ld", :)
+AC_CHECK_PROGS(LIPO, "${TOOLCHAIN_PREFIX}lipo", :)
+AC_CHECK_PROGS(STRIP, "${TOOLCHAIN_PREFIX}strip", :)
+AC_CHECK_PROGS(WINDRES, "${TOOLCHAIN_PREFIX}windres", :)
+AC_CHECK_PROGS(OTOOL, "${TOOLCHAIN_PREFIX}otool", :)
+AC_CHECK_PROGS(OBJCOPY, "${TOOLCHAIN_PREFIX}objcopy", :)
+PATH=$_SAVE_PATH
+])
+
+AC_DEFUN([MOZ_CXX11],
+[
+dnl Updates to the test below should be duplicated further below for the
+dnl cross-compiling case.
+AC_LANG_CPLUSPLUS
+if test "$GNU_CXX"; then
+    AC_CACHE_CHECK([whether 64-bits std::atomic requires -latomic],
+        ac_cv_needs_atomic,
+        AC_TRY_LINK(
+            [#include <cstdint>
+             #include <atomic>],
+            [ std::atomic<uint64_t> foo; foo = 1; ],
+            ac_cv_needs_atomic=no,
+            _SAVE_LIBS="$LIBS"
+            LIBS="$LIBS -latomic"
+            AC_TRY_LINK(
+                [#include <cstdint>
+                 #include <atomic>],
+                [ std::atomic<uint64_t> foo; foo = 1; ],
+                ac_cv_needs_atomic=yes,
+                ac_cv_needs_atomic="do not know; assuming no")
+            LIBS="$_SAVE_LIBS"
+        )
+    )
+    if test "$ac_cv_needs_atomic" = yes; then
+      MOZ_NEEDS_LIBATOMIC=1
+    else
+      MOZ_NEEDS_LIBATOMIC=
+    fi
+    AC_SUBST(MOZ_NEEDS_LIBATOMIC)
+fi
+AC_LANG_C
+])
diff --git a/build/autoconf/zlib.m4 b/build/autoconf/zlib.m4
new file mode 100644
index 000000000..49a2ccc8b
--- /dev/null
+++ b/build/autoconf/zlib.m4
@@ -0,0 +1,54 @@
+dnl This Source Code Form is subject to the terms of the Mozilla Public
+dnl License, v. 2.0. If a copy of the MPL was not distributed with this
+dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dnl Usage: MOZ_ZLIB_CHECK([version])
+
+AC_DEFUN([MOZ_ZLIB_CHECK],
+[
+
+MOZZLIB=$1
+
+MOZ_ARG_WITH_STRING(system-zlib,
+[  --with-system-zlib[=PFX]
+                          Use system libz [installed at prefix PFX]],
+    ZLIB_DIR=$withval)
+
+if test -z "$MOZ_ZLIB_LIBS$MOZ_ZLIB_CFLAGS$SKIP_LIBRARY_CHECKS"; then
+    _SAVE_CFLAGS=$CFLAGS
+    _SAVE_LDFLAGS=$LDFLAGS
+    _SAVE_LIBS=$LIBS
+
+    if test -n "${ZLIB_DIR}" -a "${ZLIB_DIR}" != "yes"; then
+        MOZ_ZLIB_CFLAGS="-I${ZLIB_DIR}/include"
+        MOZ_ZLIB_LIBS="-L${ZLIB_DIR}/lib"
+        CFLAGS="$MOZ_ZLIB_CFLAGS $CFLAGS"
+        LDFLAGS="$MOZ_ZLIB_LIBS $LDFLAGS"
+    fi
+    if test -z "$ZLIB_DIR" -o "$ZLIB_DIR" = no; then
+        MOZ_SYSTEM_ZLIB=
+    else
+        AC_CHECK_LIB(z, gzread, [MOZ_SYSTEM_ZLIB=1 MOZ_ZLIB_LIBS="$MOZ_ZLIB_LIBS -lz"],
+            [MOZ_SYSTEM_ZLIB=])
+        if test "$MOZ_SYSTEM_ZLIB" = 1; then
+            MOZZLIBNUM=`echo $MOZZLIB | awk -F. changequote(<<, >>)'{printf "0x%x\n", (((<<$>>1 * 16 + <<$>>2) * 16) + <<$>>3) * 16 + <<$>>4}'changequote([, ])`
+            AC_TRY_COMPILE([ #include <stdio.h>
+                             #include <string.h>
+                             #include <zlib.h> ],
+                           [ #if ZLIB_VERNUM < $MOZZLIBNUM
+                             #error "Insufficient zlib version ($MOZZLIBNUM required)."
+                             #endif ],
+                           MOZ_SYSTEM_ZLIB=1,
+                           AC_MSG_ERROR([Insufficient zlib version for --with-system-zlib ($MOZZLIB required)]))
+        fi
+    fi
+    CFLAGS=$_SAVE_CFLAGS
+    LDFLAGS=$_SAVE_LDFLAGS
+    LIBS=$_SAVE_LIBS
+fi
+
+AC_SUBST_LIST(MOZ_ZLIB_CFLAGS)
+AC_SUBST_LIST(MOZ_ZLIB_LIBS)
+AC_SUBST(MOZ_SYSTEM_ZLIB)
+
+])