Add m-esr52 at 52.6.0

1 files changed, 1475 insertions, 0 deletions

diff --git a/intl/icu/source/configure.ac b/intl/icu/source/configure.ac
new file mode 100644
index 000000000..eb6293656
--- /dev/null
+++ b/intl/icu/source/configure.ac
@@ -0,0 +1,1475 @@
+# -*-autoconf-*-
+AC_COPYRIGHT([ Copyright (C) 2016 and later: Unicode, Inc. and others. License & terms of use: http://www.unicode.org/copyright.html ])
+# AC_COPYRIGHT([ Copyright (c) 1999-2015, International Business Machines Corporation and others. All Rights Reserved. ])
+# configure.in for ICU
+# Stephen F. Booth, heavily modified by Yves and others
+
+# NOTE: please use 'autoreconf' to rebuild, otherwise 'aclocal && autoconf'.
+
+# Check for autoconf version
+AC_PREREQ(2.69)
+
+# Process this file with autoreconf to produce a configure script
+AC_INIT([ICU],
+        m4_esyscmd_s([sed -n 's/^[ 	]*#[ 	]*define[ 	]*U_ICU_VERSION[ 	]*"\([^"]*\)".*/\1/p' "./common/unicode/uvernum.h]"),
+        [http://icu-project.org/bugs],
+        [International Components for Unicode],
+        [http://icu-project.org])
+
+AC_CONFIG_MACRO_DIR([config/m4])
+AC_CONFIG_SRCDIR([common/unicode/utypes.h])
+
+PACKAGE="icu"
+AC_SUBST(PACKAGE)
+
+# Use custom echo test for newline option
+# Current autoconf (2.65) gives incorrect echo newline option
+# for icu-config
+# This may be removed later - mow (June 17, 2010)
+ICU_ECHO_C= ICU_ECHO_N= ICU_ECHO_T=
+case `/bin/sh -c "echo -n x"` in
+-n*)
+  case `/bin/sh -c "echo 'x\c'"` in
+  *c*) ICU_ECHO_T=' ';;     # ECHO_T is single tab character.
+  *)   ICU_ECHO_C='\c';;
+  esac;;
+*)
+  ICU_ECHO_N='-n';;
+esac
+AC_SUBST(ICU_ECHO_N)
+AC_SUBST(ICU_ECHO_C)
+AC_SUBST(ICU_ECHO_T)
+
+AC_MSG_CHECKING(for ICU version numbers)
+
+# Get the ICU version from uversion.h or other headers
+geticuversion() {
+    [sed -n 's/^[ 	]*#[ 	]*define[ 	]*U_ICU_VERSION[ 	]*"\([^"]*\)".*/\1/p' "$@"]
+}
+getuversion() {
+    [sed -n 's/^[ 	]*#[ 	]*define[ 	]*U_UNICODE_VERSION[ 	]*"\([^"]*\)".*/\1/p' "$@"]
+}
+VERSION=`geticuversion $srcdir/common/unicode/uvernum.h`
+if test x"$VERSION" = x; then
+   as_fn_error $? "Cannot determine ICU version number from uvernum.h header file" "$LINENO" 5
+fi
+
+#TODO: IcuBug:8502
+#if test "$VERSION" != "$PACKAGE_VERSION"; then
+#   AC_MSG_ERROR([configure was generated for $PACKAGE_VERSION but uvernum.h has $VERSION - please rerun autoconf])
+#fi
+
+UNICODE_VERSION=`getuversion $srcdir/common/unicode/uchar.h`
+if test x"$UNICODE_VERSION" = x; then
+    AC_MSG_ERROR([Cannot determine Unicode version number from uchar.h header file])
+fi
+# Compute a reasonable library version from the release version. This is
+# very bad, but that's wanted... We want to make sure that the LIB_VERSION
+# has at least a dot in it, so we'll add a .0 if needed.
+#[LIB_VERSION=`echo $VERSION | sed -e 's/\.//' -e 's/^\([^.]*\)$/\1.0/'`]
+LIB_VERSION=$VERSION
+LIB_VERSION_MAJOR=`echo $LIB_VERSION | sed 's/\..*//'`
+AC_SUBST(VERSION)
+AC_SUBST(LIB_VERSION)
+AC_SUBST(LIB_VERSION_MAJOR)
+AC_MSG_RESULT([release $VERSION, library $LIB_VERSION, unicode version $UNICODE_VERSION])
+
+AC_SUBST(UNICODE_VERSION)
+
+# Determine the host system
+AC_CANONICAL_HOST
+
+AC_SUBST(CPPFLAGS)
+
+# This variable is needed on z/OS because the C++ compiler only recognizes .C
+_CXX_CXXSUFFIX=cpp
+export _CXX_CXXSUFFIX
+
+# Accumulate #defines
+
+# CONFIG_CPPFLAGS: These are defines that are set for ICU Build time only.
+# They are only needed for building ICU itself. Example: platform stuff
+CONFIG_CPPFLAGS=""
+# UCONFIG_CPPFLAGS: These are defines which are set for ICU build time,
+# and also a notice is output that they need to be set
+# for end-users of ICU also. uconfig.h.prepend is generated
+# with, for example, "#define U_DISABLE_RENAMING 1"
+# Example: ICU configuration stuff
+UCONFIG_CPPFLAGS=""
+# UCONFIG_CFLAGS: contains a copy of anything that needs to be set by end users
+# such as -std
+UCONFIG_CFLAGS=""
+
+# Check whether to build debug libraries
+AC_MSG_CHECKING([whether to build debug libraries])
+enabled=no
+ENABLE_DEBUG=0
+AC_ARG_ENABLE(debug,
+    [  --enable-debug          build debug libraries and enable the U_DEBUG define [default=no]],
+    [ case "${enableval}" in
+         yes|"") enabled=yes; ENABLE_DEBUG=1; CONFIG_CPPFLAGS="$CONFIG_CPPFLAGS -DU_DEBUG=1" ;;
+         *) ;;
+    esac],
+)
+AC_MSG_RESULT($enabled)
+AC_SUBST(ENABLE_DEBUG)
+
+# Check whether to build release libraries
+AC_MSG_CHECKING([whether to build release libraries])
+enabled=yes
+ENABLE_RELEASE=1
+AC_ARG_ENABLE(release,
+    [  --enable-release        build release libraries [default=yes]],
+    [ case "${enableval}" in
+         no) enabled=no; ENABLE_RELEASE=0 ;;
+         *) ;;
+    esac],
+)
+AC_MSG_RESULT($enabled)
+AC_SUBST(ENABLE_RELEASE)
+
+# Don't use the default C/CXXFLags
+: ${CFLAGS=""}
+: ${CXXFLAGS=""}
+
+# Checks for compilers
+AC_PROG_CC([clang gcc cc c99 c89 xlc_r xlc cl.exe icc])
+# Make sure that we try clang++ first, which provides C++11 support.
+# The g++ compiler is less likely to support C++11.
+AC_PROG_CXX([clang++ g++ c++ gpp xlC_r xlC aCC CC cxx cc++ cl.exe icc FCC KCC RCC])
+
+# pkg-config is needed for harfbuzz support
+PKG_PROG_PKG_CONFIG([0.20])
+PKG_CHECK_MODULES(ICULEHB, icu-le-hb, have_icu_le_hb=true, :)
+
+# Ensure that if CXXFLAGS/CFLAGS were not set when calling configure, set it correctly based on (enable/disable) debug or release option
+# The release mode use is the default one for autoconf
+if test "$GCC" = yes; then
+    if test "$CFLAGS" = ""; then
+        if test "$ENABLE_DEBUG" = 1; then
+            CFLAGS=-g
+        fi
+        if test "$ENABLE_RELEASE" = 1; then
+            CFLAGS="$CFLAGS -O2"
+        fi
+    fi
+    if test "$CXXFLAGS" = ""; then
+        if test "$ENABLE_DEBUG" = 1; then
+            CXXFLAGS=-g
+        fi
+        if test "$ENABLE_RELEASE" = 1; then
+            CXXFLAGS="$CXXFLAGS -O2"
+        fi
+    fi
+fi
+
+AC_PROG_CPP
+
+AC_PROG_INSTALL
+
+AC_SUBST(cross_compiling)
+
+dnl use the pld hack to get ac_fn_cxx_try_link defined globally and not local
+AC_LANG_PUSH([C++])
+AC_LINK_IFELSE([AC_LANG_PROGRAM()])
+AC_LANG_POP([C++])
+
+# make sure install is relative to srcdir - if a script
+if test "$srcdir" = "."; then
+  # If srcdir isn't just ., then (srcdir) is already prepended.
+  if test "${ac_install_sh}" = "${INSTALL}"; then
+   INSTALL="\\\$(top_srcdir)/${ac_install_sh}"
+  fi
+fi
+
+#AC_CHECK_PROG(AUTOCONF, autoconf, autoconf, true)
+#AC_CHECK_PROG(STRIP, strip, strip, true)
+
+# Check for the platform make
+AC_PATH_PROGS(U_MAKE, gmake gnumake, make)
+AC_SUBST(U_MAKE)
+
+
+AC_ARG_WITH(cross-build,
+	[  --with-cross-build=dir specify an absolute path to the build directory of an ICU built for the current platform [default=no cross dir]],
+	[cross_buildroot="${withval}"],
+        [cross_buildroot=""])
+
+if test "X$cross_buildroot" = "X"; then
+    if test "$cross_compiling" = "yes"; then
+        AC_MSG_ERROR([Error! Cross compiling but no --with-cross-build option specified - please supply the path to an executable ICU's build root])
+	dnl '
+    fi
+else
+    if test -f "${cross_buildroot}/config/icucross.mk"; then
+        AC_MSG_RESULT([Using cross buildroot: $cross_buildroot])
+    else
+        if test -d "${cross_buildroot}"; then
+            AC_MSG_ERROR([${cross_buildroot}/config/icucross.mk not found. Please build ICU in ${cross_buildroot} first.])
+        else
+            AC_MSG_ERROR([No such directory ${cross_buildroot} supplied as the argument to --with-cross-build. Use an absolute path.])
+        fi
+    fi
+fi
+AC_SUBST(cross_buildroot)
+
+# Check for doxygen to generate documentation
+AC_PATH_PROG(DOXYGEN,doxygen,,$PATH:/usr/local/bin:/usr/bin)
+
+# Check that the linker is usable
+ICU_PROG_LINK
+
+# Determine the executable suffix
+# We don't use AC_EXEEXT because some compilers output separate debugging
+# files, which confuses the AC_EXEEXT macro.
+AC_MSG_CHECKING(checking for executable suffix)
+case "${host}" in
+    *-*-cygwin*|*-*-mingw*)  EXEEXT=.exe ;;
+    *)      EXEEXT="" ;;
+esac
+ac_exeext=$EXEEXT
+AC_MSG_RESULT($EXEEXT)
+AC_SUBST(EXEEXT)
+
+# Determine how strict we want to be when compiling
+AC_CHECK_STRICT_COMPILE
+
+# Check if we can build and use 64-bit libraries
+AC_CHECK_64BIT_LIBS
+AC_SUBST(ARFLAGS)
+AC_SUBST(COMPILE_LINK_ENVVAR)
+
+# Determine the Makefile fragment
+ICU_CHECK_MH_FRAG
+
+# Checks for libraries and other host specific stuff
+# On HP/UX, don't link to -lm from a shared lib because it isn't
+#  PIC (at least on 10.2)
+case "${host}" in
+	*-*-hpux*) 	AC_CHECK_LIB(m, floor, LIB_M="-lm") ;;
+
+	*) 		AC_CHECK_LIB(m, floor)
+			LIB_M="" ;;
+esac
+AC_SUBST(LIB_M)
+
+# Check whether to build shared libraries
+AC_MSG_CHECKING([whether to build shared libraries])
+enabled=no
+AC_ARG_ENABLE(shared,
+    [  --enable-shared         build shared libraries [default=yes]],
+    [ case "${enableval}" in
+	     yes|"") enabled=yes; ENABLE_SHARED=YES ;;
+	     no);;
+	     *) ;;
+    esac],
+    [enabled=yes; ENABLE_SHARED=YES]
+)
+AC_MSG_RESULT($enabled)
+AC_SUBST(ENABLE_SHARED)
+
+# Check whether to build static libraries
+AC_MSG_CHECKING([whether to build static libraries])
+enabled=no
+AC_ARG_ENABLE(static,
+    [  --enable-static         build static libraries [default=no]],
+    [ case "${enableval}" in
+	     yes|"") enabled=yes; ENABLE_STATIC=YES ;;
+	     no) ;;
+	     *) ;;
+    esac],
+)
+AC_MSG_RESULT($enabled)
+AC_SUBST(ENABLE_STATIC)
+
+# When building release static library, there might be some optimization flags we can use
+if test "$ENABLE_STATIC" = "YES"; then
+    if test "$ENABLE_SHARED" != "YES"; then
+        if test "$ENABLE_RELEASE" = 1; then
+            AC_MSG_CHECKING([whether we can use static library optimization option])
+            CHECK_STATIC_OPT_FLAG=no
+
+            OLD_CPPFLAGS="${CPPFLAGS}"
+            OLD_LDFLAGS="${LDFLAGS}"
+
+            case "${host}" in
+            *-linux*|i*86-*-*bsd*|i*86-pc-gnu)
+                if test "$GCC" = yes; then
+                    CPPFLAGS="${CPPFLAGS} -ffunction-sections -fdata-sections"
+                    LDFLAGS="${LDFLAGS} -Wl,--gc-sections"
+                fi
+                ;;
+            *)
+                ;;
+            esac
+
+            AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [CHECK_STATIC_OPT_FLAG=yes], [CHECK_STATIC_OPT_FLAG=no])
+            AC_MSG_RESULT($CHECK_STATIC_OPT_FLAG)
+            if test "$CHECK_STATIC_OPT_FLAG" = no; then
+                CPPFLAGS="${OLD_CPPFLAGS}"
+                LDFLAGS="${OLD_LDFLAGS}"
+            fi
+        fi
+    fi
+fi
+
+
+# Check whether to enable auto cleanup of libraries
+AC_MSG_CHECKING([whether to enable auto cleanup of libraries])
+enabled=no
+UCLN_NO_AUTO_CLEANUP=1
+AC_ARG_ENABLE(auto-cleanup,
+    [  --enable-auto-cleanup   enable auto cleanup of libraries [default=no]],
+    [ case "${enableval}" in
+         yes) enabled=yes;
+         CONFIG_CPPFLAGS="$CONFIG_CPPFLAGS -DUCLN_NO_AUTO_CLEANUP=0";
+         UCLN_NO_AUTO_CLEANUP=0
+          ;;
+         *) ;;
+    esac],
+)
+AC_MSG_RESULT($enabled)
+AC_SUBST(UCLN_NO_AUTO_CLEANUP)
+
+# MSVC floating-point option
+MSVC_RELEASE_FLAG=""
+if test $enabled = yes
+then
+    if test $icu_cv_host_frag = mh-cygwin-msvc -o $icu_cv_host_frag = mh-msys-msvc
+    then
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+    #if defined _MSC_VER && _MSC_VER >= 1400
+    #else
+    Microsoft Visual C++ < 2005
+    #endif
+        ]], [[]])],[MSVC_RELEASE_FLAG="/fp:precise"],[MSVC_RELEASE_FLAG="/Op"])
+
+        CFLAGS="${CFLAGS} ${MSVC_RELEASE_FLAG}"
+        CXXFLAGS="${CXXFLAGS} ${MSVC_RELEASE_FLAG}"
+    fi
+fi
+
+# Check whether to enabled draft APIs
+AC_MSG_CHECKING([whether to enable draft APIs])
+enabled=yes
+U_DEFAULT_SHOW_DRAFT=1
+AC_ARG_ENABLE(draft,
+    [  --enable-draft          enable draft APIs (and internal APIs) [default=yes]],
+    [ case "${enableval}" in
+         no) enabled=no; U_DEFAULT_SHOW_DRAFT=0;
+         CONFIG_CPPFLAGS="$CONFIG_CPPFLAGS -DU_DEFAULT_SHOW_DRAFT=0"
+          ;;
+         *) ;;
+    esac],
+)
+AC_MSG_RESULT($enabled)
+# Make sure that we can use draft API in ICU.
+if test "$U_DEFAULT_SHOW_DRAFT" = 0; then
+    CONFIG_CPPFLAGS="$CONFIG_CPPFLAGS -DU_SHOW_DRAFT_API"
+fi
+AC_SUBST(U_DEFAULT_SHOW_DRAFT)
+
+AC_PROG_RANLIB
+
+# look for 'ar' the proper way
+AC_CHECK_TOOL(AR, ar, false)
+
+AC_MSG_CHECKING([whether to enable renaming of symbols])
+enabled=yes
+U_DISABLE_RENAMING=0
+AC_ARG_ENABLE(renaming,
+    [  --enable-renaming       add a version suffix to symbols [default=yes]],
+    [ case "${enableval}" in
+	     yes|"") enabled=yes ;;
+	     no) enabled=no; U_DISABLE_RENAMING=1;
+             UCONFIG_CPPFLAGS="${UCONFIG_CPPFLAGS} -DU_DISABLE_RENAMING=1"
+              ;;
+	     *) ;;
+    esac],
+)
+AC_MSG_RESULT($enabled)
+AC_SUBST(U_DISABLE_RENAMING)
+
+AC_MSG_CHECKING([whether to enable function and data tracing])
+enabled=no
+U_ENABLE_TRACING=0
+AC_ARG_ENABLE(tracing,
+    [  --enable-tracing        enable function and data tracing [default=no]],
+    [ case "${enableval}" in
+	     yes|"") enabled=yes;
+                     CONFIG_CPPFLAGS="$CONFIG_CPPFLAGS -DU_ENABLE_TRACING=1";
+                     U_ENABLE_TRACING=1 ;;
+	     no) enabled=no; U_ENABLE_TRACING=0 ;;
+	     *) ;;
+    esac],
+)
+AC_MSG_RESULT($enabled)
+AC_SUBST(U_ENABLE_TRACING)
+
+# check if elf.h is present.
+AC_CHECK_HEADERS([elf.h])
+if test "x$ac_cv_header_elf_h" = "xyes"; then
+    CONFIG_CPPFLAGS="$CONFIG_CPPFLAGS -DU_HAVE_ELF_H=1";
+fi
+
+# Enable/disable plugins
+AC_ARG_ENABLE(plugins,
+	[  --enable-plugins        enable plugins [default=no]],
+	[case "${enableval}" in
+		yes) plugins=true ;;
+		no)  plugins=false ;;
+		*) AC_MSG_ERROR(bad value ${enableval} for --enable-plugins) ;;
+		esac],
+	plugins=false)
+ICU_CONDITIONAL(PLUGINS, test "$plugins" = true)
+
+if test "x$plugins" = "xtrue"; then
+   UCONFIG_CPPFLAGS="$UCONFIG_CPPFLAGS -DUCONFIG_ENABLE_PLUGINS=1"
+fi
+
+
+U_ENABLE_DYLOAD=1
+enable=yes
+AC_MSG_CHECKING([whether to enable dynamic loading of plugins. Ignored if plugins disabled.])
+AC_ARG_ENABLE(dyload,
+    [  --disable-dyload        disable dynamic loading [default=no]],
+    [ case "${enableval}" in
+	     yes|"")
+		     U_ENABLE_DYLOAD=1
+                     enable=yes
+                     ;;
+	     no)
+	     	 U_ENABLE_DYLOAD=0;
+                 enable=no;
+                 CONFIG_CPPFLAGS="$CONFIG_CPPFLAGS -DU_ENABLE_DYLOAD=0";
+                 ;;
+	     *) ;;
+    esac],
+)
+AC_MSG_RESULT($enable)
+AC_SUBST(U_ENABLE_DYLOAD)
+
+if test "$enable" = "yes"; then
+   AC_CHECK_HEADERS([dlfcn.h])
+   #AC_MSG_RESULT($enabled)
+   AC_SEARCH_LIBS([dlopen], [dl])
+   AC_CHECK_FUNCS([dlopen])
+
+   if test "x$ac_cv_func_dlopen" != xyes; then
+      CONFIG_CPPFLAGS="$CONFIG_CPPFLAGS -DHAVE_DLOPEN=0"
+   fi
+fi
+
+# Check for miscellanous functions.
+# So, use for putil / tools only.
+# Note that this will generate HAVE_GETTIMEOFDAY, not U_HAVE_GETTIMEOFDAY
+AC_CHECK_FUNCS([gettimeofday])
+
+
+# Check whether to use the evil rpath or not
+AC_ARG_ENABLE(rpath,
+    [  --enable-rpath          use rpath when linking [default is only if necessary]],
+    [ case "${enableval}" in
+	     yes|"") ENABLE_RPATH=YES ;;
+	     no) ;;
+	     *) ;;
+    esac],
+    [ENABLE_RPATH=NO]
+)
+AC_SUBST(ENABLE_RPATH)
+
+
+
+AC_LANG_PUSH([C++])
+AC_MSG_CHECKING([[if we have a C++ compiler]])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]],[[]])],[cxx_okay=yes],[cxx_okay=no])
+if test $cxx_okay = yes
+then
+	AC_MSG_RESULT([[Good]])
+else
+	AC_MSG_RESULT([[no]])
+	AC_MSG_ERROR([[C++ compiler $CXX does not work or no compiler found]])
+fi
+
+if [[ "$GXX" = yes ]]; then
+    # if CXXFLAGS does not have a "-std=" setting, set it now to -std=c++0x,
+    # and check that the compiler still works.
+    if ! echo "$CXXFLAGS" | grep '\-std=' >/dev/null 2>&1; then
+        OLD_CXXFLAGS="${CXXFLAGS}"
+        CXXFLAGS="$CXXFLAGS --std=c++0x"
+        AC_MSG_CHECKING([[if we have a C++11 compiler]])
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]],[[]])],[cxx11_okay=yes],[cxx11_okay=no])
+        AC_MSG_RESULT($cxx11_okay)
+        if [[ $cxx11_okay = yes ]]; then
+            AC_MSG_NOTICE([Adding CXXFLAGS option --std=c++0x])
+            UCONFIG_CXXFLAGS="${UCONFIG_CXXFLAGS} --std=c++0x"
+        else
+            CXXFLAGS="$OLD_CXXFLAGS"
+        fi
+        case "${host}" in
+        *-*-solaris*)
+            CXXFLAGS="$OLD_CXXFLAGS"
+            ;;
+        esac
+    fi
+fi
+
+AC_MSG_CHECKING([[if #include <string> works]])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <string>]], [[]])], [ac_cv_header_stdstring=yes], [ac_cv_header_stdstring=no])
+AC_MSG_RESULT($ac_cv_header_stdstring)
+if test $ac_cv_header_stdstring = yes
+then
+	U_HAVE_STD_STRING=1
+else
+        U_HAVE_STD_STRING=0
+        CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_STD_STRING=0"
+fi
+AC_SUBST(U_HAVE_STD_STRING)
+
+
+AC_MSG_CHECKING([[if #include <atomic> works]])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <atomic>]], [[]])], [ac_cv_header_atomic=yes], [ac_cv_header_atomic=no])
+AC_MSG_RESULT($ac_cv_header_atomic)
+if test $ac_cv_header_atomic = yes
+then
+	U_HAVE_ATOMIC=1
+else
+        U_HAVE_ATOMIC=0
+fi
+# Make this available via CPPFLAGS
+CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_ATOMIC=${U_HAVE_ATOMIC}"
+AC_SUBST(U_HAVE_ATOMIC)
+
+AC_LANG_POP([C++])
+
+# Always build ICU with multi-threading support.
+OLD_LIBS=${LIBS}
+
+# For Compaq Tru64 (OSF1), we must look for pthread_attr_init
+# and must do this before seaching for pthread_mutex_destroy, or
+# we will pick up libpthreads.so not libpthread.so
+# If this fails, then we must test for HPUX specials, before
+# moving on to a more generic test
+
+AC_CHECK_LIB(pthread, pthread_attr_init)
+if test $ac_cv_lib_pthread_pthread_attr_init = yes; then
+  :
+else
+  # Locate the right library for POSIX threads. We look for the
+  # symbols in the libraries first, because on Solaris libc provides
+  # pthread_create but libpthread has the real code :(
+  # AIX uses libpthreads instead of libpthread, and HP/UX uses libpthread
+  # FreeBSD users may need libpthread if they do not have libc_r.
+
+  AC_SEARCH_LIBS_FIRST(pthread_mutex_destroy, pthread pthreads c_r )
+
+  if test "$ac_cv_search_pthread_mutex_destroy" != no; then
+    :
+  else
+    # For HP 11
+    AC_CHECK_LIB(pthread, pthread_mutex_init)
+    if test $ac_cv_lib_pthread_pthread_mutex_init = yes; then
+      :
+    fi
+  fi
+
+  AC_CHECK_FUNC(pthread_mutex_lock)
+
+  if test $ac_cv_func_pthread_mutex_lock = yes; then
+    :
+  fi
+fi
+# Check to see if we are using CygWin with MSVC
+case "${host}" in
+*-pc-cygwin*|*-pc-mingw*)
+  # For gcc, the thread options are set by mh-mingw/mh-cygwin
+  # For msvc, the thread options are set by runConfigureICU
+  :
+  ;;
+*-*-hpux*)
+  # Add -mt because it does several nice things on newer compilers.
+  case "${icu_cv_host_frag}" in
+    mh-hpux-acc)
+      OLD_CXXFLAGS="${CXXFLAGS}"
+      CXXFLAGS="${CXXFLAGS} -mt"
+      if test x"`${CXX} ${CXXFLAGS} 2>&1`" != x""; then
+         CXXFLAGS="${OLD_CXXFLAGS}"
+      else
+         UCONFIG_CXXFLAGS="${UCONFIG_CXXFLAGS} -mt"
+      fi
+    ;;
+  esac
+  ;;
+*-*-solaris*)
+  case "${icu_cv_host_frag}" in
+    mh-solaris)
+         LIBS="${LIBS} -mt"
+    ;;
+  esac
+  ;;
+esac
+
+AC_ARG_ENABLE(weak-threads,
+	[  --enable-weak-threads   weakly reference the threading library [default=no]],
+	[case "${enableval}" in
+		yes)
+            LIB_THREAD="${LIBS%${OLD_LIBS}}"
+            LIBS=${OLD_LIBS}
+            ;;
+		no)  ;;
+		*) AC_MSG_ERROR(bad value ${enableval} for --enable-weak-threads) ;;
+		esac])
+AC_SUBST(LIB_THREAD)
+
+# Check for mmap()
+
+# The AC_FUNC_MMAP macro doesn't work properly.  It seems to be too specific.
+# Do this check instead.
+HAVE_MMAP=0
+AC_MSG_CHECKING([for mmap])
+AC_CACHE_VAL(ac_cv_func_mmap_ok,
+    [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <fcntl.h>], [mmap((void *)0, 0, PROT_READ, 0, 0, 0);])],[ac_cv_func_mmap_ok=yes],[ac_cv_func_mmap_ok=no])] )
+AC_MSG_RESULT($ac_cv_func_mmap_ok)
+if test $ac_cv_func_mmap_ok = yes
+then
+    HAVE_MMAP=1
+else
+    CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_MMAP=0"
+fi
+AC_SUBST(HAVE_MMAP)
+
+AC_MSG_CHECKING([for genccode assembly])
+
+# Check to see if genccode can generate simple assembly.
+GENCCODE_ASSEMBLY=
+case "${host}" in
+*-linux*|*-kfreebsd*-gnu*|i*86-*-*bsd*|i*86-pc-gnu)
+    if test "$GCC" = yes; then
+        # We're using gcc, and the simple -a gcc command line works for genccode
+        GENCCODE_ASSEMBLY="-a gcc"
+    fi ;;
+i*86-*-solaris*)
+    if test "$GCC" = yes; then
+        # When using gcc, look if we're also using GNU as.
+        # When using GNU as, the simple -a gcc command line works for genccode.
+        asv=`"${CC}" -print-prog-name=as 2>/dev/null`
+        asv=`"${asv}" --version 2>/dev/null`
+        case "X${asv}" in
+        X*GNU*) GENCCODE_ASSEMBLY="-a gcc" ;;
+        X*) GENCCODE_ASSEMBLY="-a sun-x86" ;;
+        esac
+        unset asv
+    else
+        GENCCODE_ASSEMBLY="-a sun-x86"
+    fi ;;
+sparc-*-solaris*)
+    GENCCODE_ASSEMBLY="-a sun"
+    ;;
+ia64-*-hpux*)
+# There has been some issues with building ICU data on HPUX ia64 aCC
+# when using the assemble code setting below.  For now, build without
+# assemble code for this platform.  This will increase the build time.   
+#    GENCCODE_ASSEMBLY="-a aCC-ia64"
+    ;;
+esac
+AC_SUBST(GENCCODE_ASSEMBLY)
+
+AC_MSG_RESULT($GENCCODE_ASSEMBLY)
+
+# Checks for header files
+AC_CHECK_HEADERS(inttypes.h)
+if test $ac_cv_header_inttypes_h = no; then
+ U_HAVE_INTTYPES_H=0
+ CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_INTTYPES_H=0"
+else
+ U_HAVE_INTTYPES_H=1
+fi
+if test "$CC" = ccc; then
+ AC_MSG_RESULT("C compiler set to CCC ${CC}" )
+ case "${host}" in
+        alpha*-*-*) U_HAVE_INTTYPES_H=0;
+        CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_INTTYPES_H=0"
+ esac
+fi
+
+AC_SUBST(U_HAVE_INTTYPES_H)
+
+AC_CHECK_HEADERS(dirent.h)
+if test $ac_cv_header_dirent_h = no; then
+ U_HAVE_DIRENT_H=0
+ CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_DIRENT_H=0"
+else
+ U_HAVE_DIRENT_H=1
+fi
+
+AC_SUBST(U_HAVE_DIRENT_H)
+
+# Check for endianness
+AC_C_BIGENDIAN()
+if test $ac_cv_c_bigendian = no; then
+U_IS_BIG_ENDIAN=0
+U_ENDIAN_CHAR="l"
+else
+U_IS_BIG_ENDIAN=1
+U_ENDIAN_CHAR="b"
+fi
+AC_SUBST(U_IS_BIG_ENDIAN)
+
+# Do various POSIX related checks
+U_HAVE_NL_LANGINFO_CODESET=0
+U_NL_LANGINFO_CODESET=-1
+AC_CHECK_FUNC(nl_langinfo,[U_HAVE_NL_LANGINFO=1],[U_HAVE_NL_LANGINFO=0])
+dnl AC_SUBST(U_HAVE_NL_LANGINFO)
+if test $U_HAVE_NL_LANGINFO -eq 1; then
+  AC_CACHE_CHECK([for nl_langinfo's argument to obtain the codeset],
+  ac_cv_nl_langinfo_codeset,
+  [ac_cv_nl_langinfo_codeset="unknown"
+  for a in CODESET _NL_CTYPE_CODESET_NAME; do
+  AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]], [[nl_langinfo($a);]])],[ac_cv_nl_langinfo_codeset="$a"; break],[])]
+  done)
+  if test x$ac_cv_nl_langinfo_codeset != xunknown
+  then
+      U_HAVE_NL_LANGINFO_CODESET=1
+      U_NL_LANGINFO_CODESET=$ac_cv_nl_langinfo_codeset
+      if test "x${ac_cv_nl_langinfo_codeset}" != "xCODESET"
+      then
+        CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DNL_LANGINFO_CODESET=${ac_cv_nl_langinfo_codeset}"
+      fi
+  else
+      CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_NL_LANGINFO_CODESET=0"
+  fi
+fi
+AC_SUBST(U_HAVE_NL_LANGINFO_CODESET)
+AC_SUBST(U_NL_LANGINFO_CODESET)
+
+# Namespace support checks
+AC_LANG(C++)
+AC_MSG_CHECKING([for namespace support])
+AC_CACHE_VAL(ac_cv_namespace_ok,
+    [AC_LINK_IFELSE([AC_LANG_PROGRAM([namespace x_version {void f(){}}
+    namespace x = x_version;
+    using namespace x_version;
+    ], [f();])],[ac_cv_namespace_ok=yes],[ac_cv_namespace_ok=no])] )
+AC_MSG_RESULT($ac_cv_namespace_ok)
+if test $ac_cv_namespace_ok = no
+then
+    AC_MSG_ERROR(Namespace support is required to build ICU.)
+fi
+
+AC_MSG_CHECKING([for properly overriding new and delete])
+U_OVERRIDE_CXX_ALLOCATION=0
+U_HAVE_PLACEMENT_NEW=0
+AC_CACHE_VAL(ac_cv_override_cxx_allocation_ok,
+    [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
+    class UMemory {
+    public:
+    void *operator new(size_t size) {return malloc(size);}
+    void *operator new[](size_t size) {return malloc(size);}
+    void operator delete(void *p) {free(p);}
+    void operator delete[](void *p) {free(p);}
+    };
+    ]], [])],[ac_cv_override_cxx_allocation_ok=yes],[ac_cv_override_cxx_allocation_ok=no])] )
+AC_MSG_RESULT($ac_cv_override_cxx_allocation_ok)
+if test $ac_cv_override_cxx_allocation_ok = yes
+then
+    U_OVERRIDE_CXX_ALLOCATION=1
+    AC_MSG_CHECKING([for placement new and delete])
+    AC_CACHE_VAL(ac_cv_override_placement_new_ok,
+        [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
+        class UMemory {
+        public:
+        void *operator new(size_t size) {return malloc(size);}
+        void *operator new[](size_t size) {return malloc(size);}
+        void operator delete(void *p) {free(p);}
+        void operator delete[](void *p) {free(p);}
+        void * operator new(size_t, void *ptr) { return ptr; }
+        void operator delete(void *, void *) {}
+        };
+        ]], [])],[ac_cv_override_placement_new_ok=yes],[ac_cv_override_placement_new_ok=no])] )
+    AC_MSG_RESULT($ac_cv_override_placement_new_ok)
+    if test $ac_cv_override_placement_new_ok = yes
+    then
+        U_HAVE_PLACEMENT_NEW=1
+    else
+        CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_PLACEMENT_NEW=0"
+    fi
+else
+    CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_OVERRIDE_CXX_ALLOCATION=0"
+fi
+AC_SUBST(U_OVERRIDE_CXX_ALLOCATION)
+AC_SUBST(U_HAVE_PLACEMENT_NEW)
+
+AC_LANG(C)
+AC_CHECK_FUNC(popen)
+if test x$ac_cv_func_popen = xyes
+then
+     U_HAVE_POPEN=1
+else
+     CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_POPEN=0"
+     U_HAVE_POPEN=0
+fi
+AC_SUBST(U_HAVE_POPEN)
+
+AC_CHECK_FUNC(tzset)
+U_HAVE_TZSET=0
+if test x$ac_cv_func_tzset = xyes
+then
+    U_TZSET=tzset
+    U_HAVE_TZSET=1
+else
+    AC_CHECK_FUNC(_tzset)
+    if test x$ac_cv_func__tzset = xyes
+    then
+        U_TZSET=_tzset
+        U_HAVE_TZSET=1
+    else
+      CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_TZSET=0"
+    fi
+fi
+AC_SUBST(U_HAVE_TZSET)
+AC_SUBST(U_TZSET)
+
+U_HAVE_TZNAME=0
+AC_CACHE_CHECK(for tzname,ac_cv_var_tzname,
+[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#ifndef _XOPEN_SOURCE
+#define _XOPEN_SOURCE
+#endif
+#include <stdlib.h>
+#include <time.h>
+#ifndef tzname /* For SGI.  */
+extern char *tzname[]; /* RS6000 and others reject char **tzname.  */
+#endif]], [atoi(*tzname);])],[ac_cv_var_tzname=yes],[ac_cv_var_tzname=no])])
+if test $ac_cv_var_tzname = yes; then
+  U_TZNAME=tzname
+  U_HAVE_TZNAME=1
+else
+  AC_CACHE_CHECK(for _tzname,ac_cv_var__tzname,
+  [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
+  #include <time.h>
+  extern char *_tzname[];]], [atoi(*_tzname);])],[ac_cv_var__tzname=yes],[ac_cv_var__tzname=no])])
+    if test $ac_cv_var__tzname = yes; then
+      U_TZNAME=_tzname
+      U_HAVE_TZNAME=1
+    else
+     CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_TZNAME=0"
+    fi
+fi
+AC_SUBST(U_HAVE_TZNAME)
+AC_SUBST(U_TZNAME)
+
+AC_CACHE_CHECK(for timezone,ac_cv_var_timezone,
+[AC_LINK_IFELSE([AC_LANG_PROGRAM([#ifndef _XOPEN_SOURCE
+#define _XOPEN_SOURCE
+#endif
+#include <time.h>
+], [[timezone = 1;]])],[ac_cv_var_timezone=yes],[ac_cv_var_timezone=no])])
+U_HAVE_TIMEZONE=0
+if test $ac_cv_var_timezone = yes; then
+  U_TIMEZONE=timezone
+  U_HAVE_TIMEZONE=1
+else
+  AC_CACHE_CHECK(for __timezone,ac_cv_var___timezone,
+  [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]], [[__timezone = 1;]])],[ac_cv_var___timezone=yes],[ac_cv_var___timezone=no])])
+  if test $ac_cv_var___timezone = yes; then
+    U_TIMEZONE=__timezone
+    U_HAVE_TIMEZONE=1
+  else
+    AC_CACHE_CHECK(for _timezone,ac_cv_var__timezone,
+    [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]], [[_timezone = 1;]])],[ac_cv_var__timezone=yes],[ac_cv_var__timezone=no])])
+    if test $ac_cv_var__timezone = yes; then
+      U_TIMEZONE=_timezone
+      U_HAVE_TIMEZONE=1
+    else
+     CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_TIMEZONE=0"
+    fi
+  fi
+fi
+AC_SUBST(U_HAVE_TIMEZONE)
+AC_SUBST(U_TIMEZONE)
+
+AC_CHECK_FUNC(strtod_l)
+if test x$ac_cv_func_strtod_l = xyes
+then
+     CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_STRTOD_L=1"
+     U_HAVE_STRTOD_L=1
+else
+     CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_STRTOD_L=0"
+     U_HAVE_STRTOD_L=0
+fi
+AC_SUBST(U_HAVE_STRTOD_L)
+
+# Checks for typedefs
+AC_CHECK_TYPE(int8_t,signed char)
+AC_CHECK_TYPE(uint8_t,unsigned char)
+AC_CHECK_TYPE(int16_t,signed short)
+AC_CHECK_TYPE(uint16_t,unsigned short)
+AC_CHECK_TYPE(int32_t,signed long)
+AC_CHECK_TYPE(uint32_t,unsigned long)
+AC_CHECK_TYPE(int64_t,signed long long)
+AC_CHECK_TYPE(uint64_t,unsigned long long)
+
+if test $ac_cv_type_int8_t = no; then
+CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_INT8_T=0"
+fi
+
+if test $ac_cv_type_uint8_t = no; then
+CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_UINT8_T=0"
+fi
+
+if test $ac_cv_type_int16_t = no; then
+CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_INT16_T=0"
+fi
+
+if test $ac_cv_type_uint16_t = no; then
+CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_UINT16_T=0"
+fi
+
+if test $ac_cv_type_int32_t = no; then
+CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_INT32_T=0"
+fi
+
+if test $ac_cv_type_uint32_t = no; then
+CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_UINT32_T=0"
+fi
+
+if test $ac_cv_type_int64_t = no; then
+CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_INT64_T=0"
+fi
+
+if test $ac_cv_type_uint64_t = no; then
+CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_UINT64_T=0"
+fi
+
+# Do various wchar_t related checks
+AC_CHECK_HEADER(wchar.h)
+if test "$ac_cv_header_wchar_h" = no
+then
+    U_HAVE_WCHAR_H=0
+    U_HAVE_WCSCPY=0
+    CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_WCHAR_H=0 -DU_HAVE_WCSCPY=0"
+else
+    AC_DEFINE([HAVE_WCHAR_H], [1], [wchar.h was found.])
+    U_HAVE_WCHAR_H=1
+    # Some broken systems have wchar.h but not some of its functions...
+    AC_SEARCH_LIBS(wcscpy, wcs w)
+    if test "$ac_cv_search_wcscpy" != no; then
+      U_HAVE_WCSCPY=1
+    else
+      U_HAVE_WCSCPY=0
+      CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_HAVE_WCSCPY=0"
+    fi
+fi
+AC_SUBST(U_HAVE_WCHAR_H)
+AC_SUBST(U_HAVE_WCSCPY)
+
+AC_CHECK_SIZEOF([wchar_t], 0, [
+#if STDC_HEADERS
+#include <stddef.h>
+#endif
+#include <stdlib.h>
+#if HAVE_WCHAR_H
+#include <string.h>
+#include <wchar.h>
+#endif])
+U_SIZEOF_WCHAR_T=$ac_cv_sizeof_wchar_t
+# We do this check to verify that everything is okay.
+if test $U_SIZEOF_WCHAR_T = 0; then
+    if test $U_HAVE_WCHAR_H=1; then
+       AC_MSG_ERROR(There is wchar.h but the size of wchar_t is 0)
+    fi
+fi
+
+AC_MSG_CHECKING([for UTF-16 string literal support])
+U_CHECK_UTF16_STRING=1
+CHECK_UTF16_STRING_RESULT="unknown"
+
+case "${host}" in
+*-*-aix*|powerpc64-*-linux*)
+    if test "$GCC" = no; then
+        OLD_CFLAGS="${CFLAGS}"
+        OLD_CXXFLAGS="${CXXFLAGS}"
+        CFLAGS="${CFLAGS} -qutf"
+        CXXFLAGS="${CXXFLAGS} -qutf"
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[const unsigned short hello[] = u"hello";]], [[]])],[U_CHECK_UTF16_STRING=1],[U_CHECK_UTF16_STRING=0])
+        if test "$U_CHECK_UTF16_STRING" = 0; then
+            CFLAGS="${OLD_CFLAGS}"
+            CXXFLAGS="${OLD_CXXFLAGS}"
+        else
+            UCONFIG_CXXFLAGS="${UCONFIG_CXXFLAGS} -qutf"
+            CHECK_UTF16_STRING_RESULT="-qutf"
+        fi
+    fi
+    ;;
+*-*-solaris*)
+    if test "$GCC" = no; then
+        OLD_CFLAGS="${CFLAGS}"
+        OLD_CXXFLAGS="${CXXFLAGS}"
+        CFLAGS="${CFLAGS} -xustr=ascii_utf16_ushort"
+        CXXFLAGS="${CXXFLAGS} -xustr=ascii_utf16_ushort"
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[const unsigned short hello[] = U"hello";]], [[]])],[U_CHECK_UTF16_STRING=1],[U_CHECK_UTF16_STRING=0])
+        if test "$U_CHECK_UTF16_STRING" = 0; then
+            CFLAGS="${OLD_CFLAGS}"
+            CXXFLAGS="${OLD_CXXFLAGS}"
+        else
+            CHECK_UTF16_STRING_RESULT="-xustr=ascii_utf16_ushort"
+            UCONFIG_CXXFLAGS="${UCONFIG_CXXFLAGS} -xustr=ascii_utf16_ushort"
+            UCONFIG_CFLAGS="${UCONFIG_CFLAGS} -xustr=ascii_utf16_ushort"
+            # Since we can't detect the availability of this UTF-16 syntax at compile time,
+            # we depend on configure telling us that we can use it.
+            # Since we can't ensure ICU users use -xustr=ascii_utf16_ushort,
+            # we only use this macro within ICU.
+            # If an ICU user uses icu-config, this feature will be enabled.
+            CONFIG_CPPFLAGS="${CONFIG_CPPFLAGS} -DU_CHECK_UTF16_STRING=1"
+            U_CHECK_UTF16_STRING=0
+        fi
+    fi
+    ;;
+*-*-hpux*)
+    if test "$GCC" = no; then
+        # The option will be detected at compile time without additional compiler options.
+        CHECK_UTF16_STRING_RESULT="available"
+    fi
+    ;;
+*-*-cygwin)
+    # wchar_t can be used
+    CHECK_UTF16_STRING_RESULT="available"
+    ;;
+*)
+    ;;
+esac
+
+# GCC >= 4.4 supports UTF16 string literals. The CFLAGS and CXXFLAGS may change in the future.
+if test "$CHECK_UTF16_STRING_RESULT" = "unknown"; then
+    if test "$GCC" = yes; then
+        OLD_CFLAGS="${CFLAGS}"
+        CFLAGS="${CFLAGS} -std=gnu99"
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+static const char16_t test[] = u"This is a UTF16 literal string.";
+        ]], [[]])],[CC_UTF16_STRING=1],[CC_UTF16_STRING=0])
+        if test "$CC_UTF16_STRING" = 1; then
+            UCONFIG_CFLAGS="${UCONFIG_CFLAGS} -std=gnu99"
+            CHECK_UTF16_STRING_RESULT="C only";
+        else
+            CFLAGS="${OLD_CFLAGS}"
+        fi
+    fi
+    if test "$GXX" = yes; then
+        # -Wno-return-type-c-linkage is desired so that stable ICU API is not warned about.
+        AC_LANG_PUSH([C++])
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+static const char16_t test[] = u"This is a UTF16 literal string.";
+        ]], [[]])],[CXX_UTF16_STRING=1],[CXX_UTF16_STRING=0])
+        AC_LANG_POP([C++])
+        if test "$CXX_UTF16_STRING" = 1; then
+            if test "$CC_UTF16_STRING" = 1; then
+                CHECK_UTF16_STRING_RESULT="available";
+            else
+                CHECK_UTF16_STRING_RESULT="C++ only";
+            fi
+        fi
+    fi
+fi
+AC_MSG_RESULT($CHECK_UTF16_STRING_RESULT)
+
+# Enable/disable extras
+AC_ARG_ENABLE(extras,
+	[  --enable-extras         build ICU extras [default=yes]],
+	[case "${enableval}" in
+		yes) extras=true ;;
+		no)  extras=false ;;
+		*) AC_MSG_ERROR(bad value ${enableval} for --enable-extras) ;;
+		esac],
+	extras=true)
+ICU_CONDITIONAL(EXTRAS, test "$extras" = true)
+AC_ARG_ENABLE(icuio,
+	[  --enable-icuio          build ICU's icuio library [default=yes]],
+	[case "${enableval}" in
+		yes) icuio=true ;;
+		no)  icuio=false ;;
+		*) AC_MSG_ERROR(bad value ${enableval} for --enable-icuio) ;;
+		esac],
+	icuio=true)
+ICU_CONDITIONAL(ICUIO, test "$icuio" = true)
+
+# Enable/disable layoutex
+AC_ARG_ENABLE(layoutex,
+	[  --enable-layoutex         build ICU's Paragraph Layout library [default=yes].
+            icu-le-hb must be installed via pkg-config. See http://harfbuzz.org],
+	[case "${enableval}" in
+		yes) layoutex=$have_icu_le_hb ;;
+		no)  layoutex=false ;;
+		*) AC_MSG_ERROR(bad value ${enableval} for --enable-layoutex) ;;
+		esac],
+	layoutex=$have_icu_le_hb)
+ICU_CONDITIONAL(LAYOUTEX, test "$layoutex" = true)
+
+# Enable/disable layout
+AC_ARG_ENABLE(layout,
+	[],
+	[case "${enableval}" in
+		yes) AC_MSG_ERROR(The ICU Layout Engine has been removed.) ;;
+		no)   ;;
+		*) ;;
+		esac],
+	)
+
+# Enable/disable tools
+AC_ARG_ENABLE(tools,
+	[  --enable-tools         build ICU's tools [default=yes]],
+	[case "${enableval}" in
+		yes) tools=true ;;
+		no)  tools=false ;;
+		*) AC_MSG_ERROR(bad value ${enableval} for --enable-tools) ;;
+		esac],
+	tools=true)
+ICU_CONDITIONAL(TOOLS, test "$tools" = true)
+
+AC_ARG_WITH(data-packaging,
+	[  --with-data-packaging     specify how to package ICU data. Possible values:
+        files    raw files (.res, etc)
+        archive  build a single icudtXX.dat file
+        library  shared library (.dll/.so/etc.)
+        static   static library (.a/.lib/etc.)
+        auto     build shared if possible (default)
+           See http://userguide.icu-project.org/icudata for more info.],
+	[case "${withval}" in
+                files|archive|library) datapackaging=$withval ;;
+		auto) datapackaging=$withval ;;
+		common) datapackaging=archive ;;
+		dll) datapackaging=library ;;
+		static) datapackaging=static ;;
+		*) AC_MSG_ERROR(bad value ${withval} for --with-data-packaging) ;;
+		esac],
+        [datapackaging=])
+
+# Note:  'thesysconfdir' is an evaluated version, for Man pages, so also for thedatadir, thelibdir, etc..
+# thesysconfdir=`eval echo $sysconfdir`
+dnl# AC_SUBST(thesysconfdir)
+dnl# thelibdir=`test "x$exec_prefix" = xNONE && exec_prefix="$prefix"; eval echo $libdir`
+dnl# AC_SUBST(thelibdir)
+thedatadir=`eval echo $datadir`
+dnl# AC_SUBST(thedatadir)
+# Always put raw data files in share/icu/{version}, etc.   Never use lib/icu/{version} for data files.. Actual shared libraries will go in {libdir}.
+pkgicudatadir=$datadir
+thepkgicudatadir=$thedatadir
+AC_SUBST(pkgicudatadir)
+AC_SUBST(thepkgicudatadir)
+
+dnl# Shouldn't need the AC_SUBST
+
+if test x"$datapackaging" = x -o x"$datapackaging" = xauto; then
+	# default to library
+	datapackaging=library
+	if test "$ENABLE_STATIC" = "YES"; then
+		if test "$ENABLE_SHARED" != "YES"; then
+			datapackaging=static
+		fi
+	fi
+fi
+
+datapackaging_dir=`eval echo $thedatadir`"/icu/${VERSION}"
+
+datapackaging_msg="(No explaination for mode $datapackaging.)"
+
+datapackaging_msg_path="ICU will look in $datapackaging_dir which is the installation location. Call u_setDataDirectory() or use the ICU_DATA environment variable to override."
+datapackaging_msg_set="ICU will use the linked data library. If linked with the stub library located in stubdata/, the application can use udata_setCommonData() or set a data path to override."
+datapackaging_howfound="(unknown)"
+
+case "$datapackaging" in
+    files)
+    DATA_PACKAGING_MODE=files
+    datapackaging_msg="ICU data will be stored in individual files."
+    datapackaging_howfound="$datapackaging_msg_path"
+    ;;
+    archive)
+    DATA_PACKAGING_MODE=common
+    datapackaging_msg="ICU data will be stored in a single .dat file."
+    datapackaging_howfound="$datapackaging_msg_path"
+    ;;
+    library)
+    DATA_PACKAGING_MODE=dll
+    datapackaging_msg="ICU data will be linked with ICU."
+    if test "$ENABLE_STATIC" = "YES"; then
+        datapackaging_msg="$datapackaging_msg A static data library will be built. "
+    fi
+    if test "$ENABLE_SHARED" = "YES"; then
+        datapackaging_msg="$datapackaging_msg A shared data library will be built. "
+    fi
+    datapackaging_howfound="$datapackaging_msg_set"
+    ;;
+    static)
+    DATA_PACKAGING_MODE=static
+    datapackaging_msg="ICU data will be stored in a static library."
+    datapackaging_howfound="$datapackaging_msg_set"
+    ;;
+esac
+AC_SUBST(DATA_PACKAGING_MODE)
+
+# Sets a library suffix
+AC_MSG_CHECKING([for a library suffix to use])
+AC_ARG_WITH(library-suffix,
+	[  --with-library-suffix=suffix    tag a suffix to the library names [default=]],
+	[ICULIBSUFFIX="${withval}"],
+	[ICULIBSUFFIX=])
+msg=$ICULIBSUFFIX
+if test "$msg" = ""; then
+    msg=none
+fi
+AC_MSG_RESULT($msg)
+AC_SUBST(ICULIBSUFFIX)
+if test "$ICULIBSUFFIX" != ""
+then
+    U_HAVE_LIB_SUFFIX=1
+    ICULIBSUFFIXCNAME=`echo _$ICULIBSUFFIX | sed 's/[^A-Za-z0-9_]/_/g'`
+    UCONFIG_CPPFLAGS="${UCONFIG_CPPFLAGS} -DU_HAVE_LIB_SUFFIX=1 -DU_LIB_SUFFIX_C_NAME=${ICULIBSUFFIXCNAME} "
+else
+    U_HAVE_LIB_SUFFIX=0
+fi
+AC_SUBST(U_HAVE_LIB_SUFFIX)
+AC_SUBST(ICULIBSUFFIXCNAME)
+
+# Enable/disable tests
+AC_ARG_ENABLE(tests,
+	[  --enable-tests          build ICU tests [default=yes]],
+	[case "${enableval}" in
+		yes) tests=true ;;
+		no)  tests=false ;;
+		*) AC_MSG_ERROR(bad value ${enableval} for --enable-tests) ;;
+		esac],
+	tests=true)
+ICU_CONDITIONAL(TESTS, test "$tests" = true)
+
+# Enable/disable samples
+AC_ARG_ENABLE(samples,
+	[  --enable-samples        build ICU samples [default=yes]
+
+Additionally, the variable FORCE_LIBS may be set before calling configure.
+If set, it will REPLACE any automatic list of libraries.],
+	[case "${enableval}" in
+		yes) samples=true ;;
+		no)  samples=false ;;
+		*) AC_MSG_ERROR(bad value ${enableval} for --enable-samples) ;;
+		esac],
+	samples=true)
+ICU_CONDITIONAL(SAMPLES, test "$samples" = true)
+
+ICUDATA_CHAR=$U_ENDIAN_CHAR
+
+# Platform-specific Makefile setup
+# set ICUDATA_CHAR to 'e' for any EBCDIC (which should be big endian) platform.
+case "${host}" in
+	*-*-solaris*) 	platform=U_SOLARIS ;;
+	*-*-linux*|*-*-gnu|*-*-k*bsd*-gnu|*-*-kopensolaris*-gnu)        platform=U_LINUX ;;
+	*-*-*bsd*|*-*-dragonfly*) 	platform=U_BSD ;;
+	*-*-aix*) 	platform=U_AIX ;;
+	*-*-hpux*) 	platform=U_HPUX ;;
+	*-apple-darwin*|*-apple-rhapsody*)	platform=U_DARWIN ;;
+	*-*-cygwin*)	platform=U_CYGWIN ;;
+	*-*-mingw*)	platform=U_MINGW ;;
+	*-*ibm-openedition*|*-*-os390*)	platform=OS390
+			if test "${ICU_ENABLE_ASCII_STRINGS}" != "1"; then
+				ICUDATA_CHAR="e"
+			fi ;;
+	*-*-os400*)	platform=OS400
+			if test "${ICU_ENABLE_ASCII_STRINGS}" != "1"; then
+				ICUDATA_CHAR="e"
+			fi ;;
+	*-*-nto*)	platform=U_QNX ;;
+	*-dec-osf*) 	platform=U_OSF ;;
+	*-*-beos)		platform=U_BEOS ;;
+	*-*-irix*)		platform=U_IRIX ;;
+	*-ncr-*)		platform=U_MPRAS ;;
+	*) 		platform=U_UNKNOWN_PLATFORM ;;
+esac
+AC_SUBST(ICUDATA_CHAR)
+AC_SUBST(platform)
+platform_make_fragment_name="$icu_cv_host_frag"
+platform_make_fragment='$(top_srcdir)/config/'"$platform_make_fragment_name"
+AC_SUBST(platform_make_fragment_name)
+AC_SUBST(platform_make_fragment)
+
+if test "${FORCE_LIBS}" != ""; then
+   echo " *** Overriding automatically chosen [LIBS=$LIBS], using instead [FORCE_LIBS=${FORCE_LIBS}]"  1>&6
+   LIBS=${FORCE_LIBS}
+fi
+
+# Now that we're done using CPPFLAGS etc. for tests, we can change it
+# for build.
+
+if test "${CC}" == "clang"; then
+   CLANGCFLAGS="-Qunused-arguments -Wno-parentheses-equality"
+else
+   CLANGCFLAGS=""
+fi
+
+if test "${CXX}" == "clang++"; then
+   CLANGCXXFLAGS="-Qunused-arguments -Wno-parentheses-equality"
+else
+   CLANGCXXFLAGS=""
+fi
+
+CPPFLAGS="$CPPFLAGS \$(THREADSCPPFLAGS)"
+CFLAGS="$CFLAGS \$(THREADSCFLAGS) $CLANGCFLAGS"
+CXXFLAGS="$CXXFLAGS \$(THREADSCXXFLAGS) $CLANGCXXFLAGS"
+
+AC_SUBST(LIBCFLAGS)
+AC_SUBST(LIBCXXFLAGS)
+
+# append all config cppflags
+CPPFLAGS="$CPPFLAGS $CONFIG_CPPFLAGS $UCONFIG_CPPFLAGS"
+
+echo "CPPFLAGS=$CPPFLAGS"
+echo "CFLAGS=$CFLAGS"
+echo "CXXFLAGS=$CXXFLAGS"
+
+
+# output the Makefiles
+AC_CONFIG_FILES([icudefs.mk \
+		Makefile \
+		data/pkgdataMakefile \
+		config/Makefile.inc \
+		config/icu.pc \
+		config/pkgdataMakefile \
+		data/Makefile \
+		stubdata/Makefile \
+		common/Makefile \
+		i18n/Makefile \
+		layoutex/Makefile \
+		io/Makefile \
+		extra/Makefile \
+		extra/uconv/Makefile \
+		extra/uconv/pkgdataMakefile \
+		extra/scrptrun/Makefile \
+		tools/Makefile \
+		tools/ctestfw/Makefile \
+		tools/toolutil/Makefile \
+		tools/makeconv/Makefile \
+		tools/genrb/Makefile \
+		tools/genccode/Makefile \
+		tools/gencmn/Makefile \
+		tools/gencnval/Makefile \
+		tools/gendict/Makefile \
+		tools/gentest/Makefile \
+		tools/gennorm2/Makefile \
+		tools/genbrk/Makefile \
+		tools/gensprep/Makefile \
+		tools/icuinfo/Makefile \
+		tools/icupkg/Makefile \
+		tools/icuswap/Makefile \
+		tools/pkgdata/Makefile \
+		tools/tzcode/Makefile \
+		tools/gencfu/Makefile \
+		test/Makefile \
+		test/compat/Makefile \
+		test/testdata/Makefile \
+		test/testdata/pkgdataMakefile \
+		test/hdrtst/Makefile \
+		test/intltest/Makefile \
+		test/cintltst/Makefile \
+		test/iotest/Makefile \
+		test/letest/Makefile \
+		test/perf/Makefile \
+		test/perf/collationperf/Makefile \
+		test/perf/collperf/Makefile \
+		test/perf/collperf2/Makefile \
+		test/perf/dicttrieperf/Makefile \
+		test/perf/ubrkperf/Makefile \
+		test/perf/charperf/Makefile \
+		test/perf/convperf/Makefile \
+		test/perf/normperf/Makefile \
+		test/perf/DateFmtPerf/Makefile \
+		test/perf/howExpensiveIs/Makefile \
+		test/perf/strsrchperf/Makefile \
+		test/perf/unisetperf/Makefile \
+		test/perf/usetperf/Makefile \
+		test/perf/ustrperf/Makefile \
+		test/perf/utfperf/Makefile \
+		test/perf/utrie2perf/Makefile \
+		test/perf/leperf/Makefile \
+		samples/Makefile samples/date/Makefile \
+		samples/cal/Makefile samples/layout/Makefile])
+AC_OUTPUT
+
+echo
+echo "ICU for C/C++ $VERSION is ready to be built."
+echo "=== Important Notes: ==="
+
+echo "Data Packaging: $datapackaging"
+echo " This means: $datapackaging_msg"
+echo " To locate data: $datapackaging_howfound"
+
+if test -n "`$U_MAKE -v 2>&1 | grep '^GNU Make'`"; then
+echo "Building ICU: Use a GNU make such as $U_MAKE to build ICU."
+else
+echo "** WARNING: $U_MAKE may not be GNU make."
+echo "This may cause ICU to fail to build. Please make sure that GNU make"
+echo "is in your PATH so that the configure script can detect its location."
+fi
+if test "x$AR" = "xfalse"; then
+  echo "*** WARNING: Archiver ar not found. Set AR= or fix PATH. Some builds (such as static) may fail."
+fi
+
+AC_MSG_CHECKING([the version of "$U_MAKE"])
+if "$U_MAKE" -f "$srcdir/config/gmakever.mk" PLATFORM="$platform"; then
+AC_MSG_RESULT([ok])
+else
+AC_MSG_RESULT([too old or test failed - try upgrading GNU Make])
+fi
+
+AC_SUBST(UCONFIG_CPPFLAGS)
+if test -n "$UCONFIG_CPPFLAGS"; then
+   HDRFILE="uconfig.h.prepend"
+   echo "*** WARNING: You must set the following flags before code compiled against this ICU will function properly:"
+   echo
+   echo "   ${UCONFIG_CPPFLAGS}"
+   echo
+   echo 'The recommended way to do this is to prepend the following lines to source/common/unicode/uconfig.h or #include them near the top of that file.'
+   echo "Creating the file ${HDRFILE}"
+   echo
+   echo '---------------   ' "${HDRFILE}"
+   echo > "${HDRFILE}"
+   echo '/* ICU customizations: put these lines at the top of uconfig.h */' >> "${HDRFILE}"
+   echo >> "${HDRFILE}"
+   for flag in ${UCONFIG_CPPFLAGS};
+   do
+        echo " /* $flag */" >> "${HDRFILE}"
+        case "${flag}" in
+        -D*=*)
+          [ \echo "${flag}" | sed -n 's%-D\([^=]*\)=%#define \1 %p' >> "${HDRFILE}" ]
+          \echo >> "${HDRFILE}"
+          ;;
+        -D*)
+          [ \echo "${flag}" | sed -n 's%-D\([^=]*\)%#define \1 %p' >> "${HDRFILE}" ]
+          \echo >> "${HDRFILE}"
+          ;;
+        *)
+          \echo "/*  Not sure how to handle this argument: ${flag} */" >> "${HDRFILE}"
+          \echo >> "${HDRFILE}"
+          ;;
+        esac
+   done
+   cat "${HDRFILE}"
+   \echo  "/* End of ${HDRFILE} ------------ */" >> "${HDRFILE}"
+   echo >> "${HDRFILE}"
+   echo '--------------- end ' "${HDRFILE}"
+fi
+
+AC_SUBST(UCONFIG_CFLAGS)
+if test -n "$UCONFIG_CFLAGS"; then
+   echo "C   apps may want to build with CFLAGS   = ${UCONFIG_CFLAGS}"
+fi
+AC_SUBST(UCONFIG_CXXFLAGS)
+if test -n "$UCONFIG_CXXFLAGS"; then
+   echo "C++ apps may want to build with CXXFLAGS = ${UCONFIG_CXXFLAGS}"
+fi
+
+if test "$tools" = false;
+then
+        echo "## Note: you have disabled ICU's tools. This ICU cannot build its own data or tests."
+        echo "## Expect build failures in the 'data', 'test', and other directories."
+fi
+
+$as_unset _CXX_CXXSUFFIX