Backed out changeset c0e6aae0b93d (bug 1294803) for breaking artifact…

… builds.

MozReview-Commit-ID: BTrQMCJSCRn

build/autoconf/ffi.m4

@@ -2,6 +2,26 @@ 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_FFI], [
+
+MOZ_ARG_ENABLE_BOOL(system-ffi,
+[  --enable-system-ffi       Use system libffi (located with pkgconfig)],
+    MOZ_SYSTEM_FFI=1 )
+
+if test -n "$MOZ_SYSTEM_FFI"; then
+    # Vanilla libffi 3.0.9 needs a few patches from upcoming version 3.0.10
+    # for non-GCC compilers.
+    if test -z "$GNU_CC"; then
+        PKG_CHECK_MODULES(MOZ_FFI, libffi > 3.0.9)
+    else
+        PKG_CHECK_MODULES(MOZ_FFI, libffi >= 3.0.9)
+    fi
+fi
+
+AC_SUBST(MOZ_SYSTEM_FFI)
+
+])
+
 AC_DEFUN([MOZ_SUBCONFIGURE_FFI], [
 if test "$MOZ_BUILD_APP" != js -o -n "$JS_STANDALONE"; then
 

build/moz.configure/old.configure

@@ -233,6 +233,7 @@ def old_configure_options(*options):
     '--enable-synth-pico',
     '--enable-system-cairo',
     '--enable-system-extension-dirs',
+    '--enable-system-ffi',
     '--enable-system-pixman',
     '--enable-system-sqlite',
     '--enable-tasktracer',

js/src/old-configure.in

@@ -1538,6 +1538,11 @@ if test -n "$ZLIB_IN_MOZGLUE"; then
 fi
 AC_SUBST(ZLIB_IN_MOZGLUE)
 
+dnl ========================================================
+dnl system libffi Support
+dnl ========================================================
+MOZ_CONFIG_FFI()
+
 dnl ========================================================
 dnl =
 dnl = Application

moz.configure

@@ -101,8 +101,6 @@ include_when('build/moz.configure/headers.configure',
              when='--enable-compile-environment')
 include_when('build/moz.configure/warnings.configure',
              when='--enable-compile-environment')
-include_when('build/moz.configure/ffi.configure',
-             when='--enable-compile-environment')
 
 @dependable
 @imports(_from='mozbuild.backend', _import='backends')

old-configure.in

@@ -2310,6 +2310,11 @@ fi # SKIP_LIBRARY_CHECKS
 
 AC_SUBST(MOZ_PNG_ARM_NEON)
 
+dnl ========================================================
+dnl system libffi Support
+dnl ========================================================
+MOZ_CONFIG_FFI()
+
 dnl ========================================================
 dnl =
 dnl = Application