1 files changed, 82 insertions, 0 deletions
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; }])