path: root/old-configure.in

dnl -*- Mode: Autoconf; tab-width: 4; indent-tabs-mode: nil; -*-
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 Process this file with autoconf to produce a configure script.
dnl ========================================================
AC_PREREQ(2.13)
AC_INIT(config/config.mk)
AC_CONFIG_AUX_DIR(${srcdir}/build/autoconf)
AC_CANONICAL_SYSTEM

dnl ========================================================
dnl =
dnl = Don't change the following two lines.  Doing so breaks:
dnl =
dnl = CFLAGS="-foo" ./configure
dnl =
dnl ========================================================
CFLAGS="${CFLAGS=}"
CPPFLAGS="${CPPFLAGS=}"
CXXFLAGS="${CXXFLAGS=}"
LDFLAGS="${LDFLAGS=}"
HOST_CFLAGS="${HOST_CFLAGS=}"
HOST_CXXFLAGS="${HOST_CXXFLAGS=}"
HOST_LDFLAGS="${HOST_LDFLAGS=}"

dnl ========================================================
dnl = Preserve certain environment flags passed to configure
dnl = We want sub projects to receive the same flags
dnl = untainted by this configure script
dnl ========================================================
_SUBDIR_CC="$CC"
_SUBDIR_CXX="$CXX"
_SUBDIR_CFLAGS="$CFLAGS"
_SUBDIR_CPPFLAGS="$CPPFLAGS"
_SUBDIR_CXXFLAGS="$CXXFLAGS"
_SUBDIR_LDFLAGS="$LDFLAGS"
_SUBDIR_HOST_CC="$HOST_CC"
_SUBDIR_HOST_CFLAGS="$HOST_CFLAGS"
_SUBDIR_HOST_CXXFLAGS="$HOST_CXXFLAGS"
_SUBDIR_HOST_LDFLAGS="$HOST_LDFLAGS"
_SUBDIR_CONFIG_ARGS="$ac_configure_args"

dnl Set the version number of the libs included with mozilla
dnl ========================================================
MOZJPEG=62
MOZPNG=10625
NSPR_VERSION=4
NSPR_MINVER=4.35
NSS_VERSION=3

dnl Set the minimum version of toolkit libs used by mozilla
dnl ========================================================
GLIB_VERSION=2.22
# 2_26 is the earliest version we can set GLIB_VERSION_MIN_REQUIRED.
# The macro won't be used when compiling with earlier versions anyway.
GLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_26
GIO_VERSION=2.22
CAIRO_VERSION=1.10
GTK2_VERSION=2.18.0
GTK3_VERSION=3.4.0
GDK_VERSION_MAX_ALLOWED=GDK_VERSION_3_4
WINDRES_VERSION=2.14.90
W32API_VERSION=3.14
GNOMEUI_VERSION=2.2.0
GCONF_VERSION=1.2.1
STARTUP_NOTIFICATION_VERSION=0.8
DBUS_VERSION=0.60
SQLITE_VERSION=3.36.0

dnl Set various checks
dnl ========================================================
MISSING_X=

dnl Initialize the Pthread test variables early so they can be
dnl  overridden by each platform.
dnl ========================================================
MOZ_USE_PTHREADS=
_PTHREAD_LDFLAGS=""

dnl Do not allow objdir == srcdir builds.
dnl ==============================================================
_topsrcdir=`cd \`dirname $0\`; pwd -W 2>/dev/null || pwd -P`
_objdir=`pwd -P`

MOZ_BUILD_ROOT=`pwd -W 2>/dev/null || pwd -P`
DIST="$MOZ_BUILD_ROOT/dist"

MOZ_DEFAULT_COMPILER

case "$target" in
*-linux*)
    AC_PATH_PROG(OBJCOPY,objcopy)
    ;;
esac

AC_SUBST(OBJCOPY)

dnl ========================================================
dnl Checks for compilers.
dnl ========================================================

dnl AR_FLAGS set here so HOST_AR_FLAGS can be set correctly (see bug 538269)
AR_FLAGS='crs $@'

if test "$COMPILE_ENVIRONMENT"; then

if test "$target" != "$host"; then
    MOZ_CROSS_COMPILER
else
    AC_PROG_CC
    case "$target" in
    *-mingw*)
      # Work around the conftest.exe access problem on Windows
      sleep 2
    esac
    AC_PROG_CXX
    AC_PROG_RANLIB
    MOZ_PATH_PROGS(AS, $AS as, $CC)
    AC_CHECK_PROGS(AR, ar, :)
    AC_CHECK_PROGS(LD, ld, :)
    AC_CHECK_PROGS(STRIP, strip, :)
    AC_CHECK_PROGS(WINDRES, windres, :)
    AC_CHECK_PROGS(OTOOL, otool, :)
    if test -z "$HOST_RANLIB"; then
        HOST_RANLIB="$RANLIB"
    fi
    if test -z "$HOST_AR"; then
        HOST_AR="$AR"
    fi
    if test -z "$HOST_AR_FLAGS"; then
        HOST_AR_FLAGS="$AR_FLAGS"
    fi
fi

if test -n "$MOZ_WINCONSOLE"; then
    AC_DEFINE(MOZ_WINCONSOLE)
fi

MOZ_TOOL_VARIABLES

dnl ========================================================
dnl Special win32 checks
dnl ========================================================

WINVER=601

case "$target" in
*-mingw*)
    if test "$GCC" != "yes"; then
        # Check to see if we are really running in a msvc environemnt
        _WIN32_MSVC=1
        AC_CHECK_PROGS(MIDL, midl)

        # Make sure compilers are valid
        CFLAGS="$CFLAGS -TC -nologo"
        CXXFLAGS="$CXXFLAGS -TP -nologo"
        AC_LANG_SAVE
        AC_LANG_C
        AC_TRY_COMPILE([#include <stdio.h>],
            [ printf("Hello World\n"); ],,
            AC_MSG_ERROR([\$(CC) test failed.  You must have MS VC++ in your path to build.]) )

        AC_LANG_CPLUSPLUS
        AC_TRY_COMPILE([#include <new.h>],
            [ unsigned *test = new unsigned(42); ],,
            AC_MSG_ERROR([\$(CXX) test failed.  You must have MS VC++ in your path to build.]) )
        AC_LANG_RESTORE

        changequote(,)
        _MSVC_VER_FILTER='s|.*[^!-~]([0-9]+\.[0-9]+\.[0-9]+(\.[0-9]+)?).*|\1|p'
        changequote([,])

        _MSC_VER=`echo ${CC_VERSION} | cut -c 1-2,4-5`

        AC_DEFINE(_CRT_SECURE_NO_WARNINGS)
        AC_DEFINE(_CRT_NONSTDC_NO_WARNINGS)
        AC_DEFINE(_USE_MATH_DEFINES) # Otherwise MSVC's math.h doesn't #define M_PI.

        case "$CC_VERSION" in
        19*)
            _CC_SUITE=14
            MSVS_VERSION=2015
            MSVC_C_RUNTIME_DLL=vcruntime140*.dll
            MSVC_CXX_RUNTIME_DLL=msvcp140*.dll

            MOZ_CHECK_HEADER(dia2.h, MSVC_HAS_DIA_SDK=1)
            if test -n "$MSVC_HAS_DIA_SDK"; then
                AC_DEFINE(MSVC_HAS_DIA_SDK)
            fi

            # C5026: move constructor was implicitly defined as deleted
            CXXFLAGS="$CXXFLAGS -wd5026"

            # C5027: move assignment operator was implicitly defined as deleted
            CXXFLAGS="$CXXFLAGS -wd5027"

            # -Zc:sizedDealloc- disables C++14 global sized deallocation (see bug 1160146)
            CXXFLAGS="$CXXFLAGS -Zc:sizedDealloc-"
            
            # C4752: We explicitly use AVX instructions in only some libs, not global
            # This is a pointless "helpful warning" to use /arch:AVX which we don't want.
            CFLAGS="$CFLAGS -wd4752"
            CXXFLAGS="$CXXFLAGS -wd4752"
            
            # https://connect.microsoft.com/VisualStudio/feedback/details/888527/warnings-on-dbghelp-h
            # for dbghelp.h, imagehlp.h, and shobj.h
            # C4091: 'typedef ': ignored on left of '' when no variable is declared
            CFLAGS="$CFLAGS -wd4091"
            CXXFLAGS="$CXXFLAGS -wd4091"

            # This is intended as a temporary hack to support building with VS2015.
            # 'noexcept' used with no exception handling mode specified;
            # termination on exception is not guaranteed. Specify /EHsc
            CXXFLAGS="$CXXFLAGS -wd4577"

            if test -n "$WIN_UCRT_REDIST_DIR"; then
              if test ! -d "$WIN_UCRT_REDIST_DIR"; then
                AC_MSG_ERROR([Invalid Windows UCRT Redist directory: ${WIN_UCRT_REDIST_DIR}])
              fi
              WIN_UCRT_REDIST_DIR=`cd "$WIN_UCRT_REDIST_DIR" && pwd -W`
            fi
            ;;
        esac
        AC_SUBST(MSVS_VERSION)
        AC_SUBST(MSVC_HAS_DIA_SDK)
        AC_SUBST(MSVC_C_RUNTIME_DLL)
        AC_SUBST(MSVC_CXX_RUNTIME_DLL)

        AC_DEFINE(HAVE_SEH_EXCEPTIONS)

        if test -n "$WIN32_REDIST_DIR"; then
          if test ! -d "$WIN32_REDIST_DIR"; then
            AC_MSG_ERROR([Invalid Win32 Redist directory: ${WIN32_REDIST_DIR}])
          fi
          WIN32_REDIST_DIR=`cd "$WIN32_REDIST_DIR" && pwd -W`
        fi

        # Check linker version
        _LD_FULL_VERSION=`"${LD}" -v 2>&1 | sed -nre "$_MSVC_VER_FILTER"`
        _LD_MAJOR_VERSION=`echo ${_LD_FULL_VERSION} | $AWK -F\. '{ print $1 }'`
        if test "$_LD_MAJOR_VERSION" != "$_CC_SUITE"; then
            AC_MSG_ERROR([The linker major version, $_LD_FULL_VERSION,  does not match the compiler suite version, $_CC_SUITE.])
        fi

        INCREMENTAL_LINKER=1

        # Set midl environment
        case "$target" in
        i*86-*)
            MIDL_FLAGS="${MIDL_FLAGS} -env win32"
            ;;
        x86_64-*)
            MIDL_FLAGS="${MIDL_FLAGS} -env x64"
            ;;
        esac

        unset _MSVC_VER_FILTER

        WRAP_STL_INCLUDES=1
        STL_FLAGS="-I${DIST}/stl_wrappers"
        CFLAGS="$CFLAGS -D_HAS_EXCEPTIONS=0"
        CXXFLAGS="$CXXFLAGS -D_HAS_EXCEPTIONS=0"
    else
        # Check w32api version
        _W32API_MAJOR_VERSION=`echo $W32API_VERSION | $AWK -F\. '{ print $1 }'`
        _W32API_MINOR_VERSION=`echo $W32API_VERSION | $AWK -F\. '{ print $2 }'`
        AC_MSG_CHECKING([for w32api version >= $W32API_VERSION])
        AC_TRY_COMPILE([#include <w32api.h>],
            #if (__W32API_MAJOR_VERSION < $_W32API_MAJOR_VERSION) || \
                (__W32API_MAJOR_VERSION == $_W32API_MAJOR_VERSION && \
                 __W32API_MINOR_VERSION < $_W32API_MINOR_VERSION)
                #error "test failed."
            #endif
            , [ res=yes ], [ res=no ])
        AC_MSG_RESULT([$res])
        if test "$res" != "yes"; then
            AC_MSG_ERROR([w32api version $W32API_VERSION or higher required.])
        fi
        # Check windres version
        AC_MSG_CHECKING([for windres version >= $WINDRES_VERSION])
        _WINDRES_VERSION=`${WINDRES} --version 2>&1 | grep -i windres 2>/dev/null | $AWK '{ print $3 }'`
        AC_MSG_RESULT([$_WINDRES_VERSION])
        _WINDRES_MAJOR_VERSION=`echo $_WINDRES_VERSION | $AWK -F\. '{ print $1 }'`
        _WINDRES_MINOR_VERSION=`echo $_WINDRES_VERSION | $AWK -F\. '{ print $2 }'`
        _WINDRES_RELEASE_VERSION=`echo $_WINDRES_VERSION | $AWK -F\. '{ print $3 }'`
        WINDRES_MAJOR_VERSION=`echo $WINDRES_VERSION | $AWK -F\. '{ print $1 }'`
        WINDRES_MINOR_VERSION=`echo $WINDRES_VERSION | $AWK -F\. '{ print $2 }'`
        WINDRES_RELEASE_VERSION=`echo $WINDRES_VERSION | $AWK -F\. '{ print $3 }'`
        if test "$_WINDRES_MAJOR_VERSION" -lt "$WINDRES_MAJOR_VERSION" -o \
                "$_WINDRES_MAJOR_VERSION" -eq "$WINDRES_MAJOR_VERSION" -a \
                "$_WINDRES_MINOR_VERSION" -lt "$WINDRES_MINOR_VERSION" -o \
                "$_WINDRES_MAJOR_VERSION" -eq "$WINDRES_MAJOR_VERSION" -a \
                "$_WINDRES_MINOR_VERSION" -eq "$WINDRES_MINOR_VERSION" -a \
                "$_WINDRES_RELEASE_VERSION" -lt "$WINDRES_RELEASE_VERSION"
        then
            AC_MSG_ERROR([windres version $WINDRES_VERSION or higher is required to build.])
        fi

        AC_CHECK_PROGS(MIDL, $target-widl widl)
        if test -n "$MIDL"; then
            case "$target" in
            i*86-*)
                MIDL_FLAGS="$MIDL_FLAGS --win32 -m32"
                ;;
            x86_64-*)
                MIDL_FLAGS="$MIDL_FLAGS --win64 -m64"
                ;;
            esac
        fi

        # strsafe.h on mingw uses macros for function deprecation that pollutes namespace
        # causing problems with local implementations with the same name.
        AC_DEFINE(STRSAFE_NO_DEPRECATE)
    fi # !GNU_CC

    AC_DEFINE_UNQUOTED(WINVER,0x$WINVER)
    AC_DEFINE_UNQUOTED(_WIN32_WINNT,0x$WINVER)
    # Require OS features provided by IE 6.0 SP2 (XP SP2)
    AC_DEFINE_UNQUOTED(_WIN32_IE,0x0603)

    ;;
esac

if test -n "$_WIN32_MSVC"; then
    SKIP_PATH_CHECKS=1
    SKIP_COMPILER_CHECKS=1
    SKIP_LIBRARY_CHECKS=1

    # Since we're skipping compiler and library checks, hard-code
    # some facts here.
    AC_DEFINE(HAVE_IO_H)
    AC_DEFINE(HAVE_ISATTY)
fi

fi # COMPILE_ENVIRONMENT

AC_SUBST(MIDL_FLAGS)
AC_SUBST(_MSC_VER)

AC_SUBST(GNU_AS)
AC_SUBST(GNU_LD)
AC_SUBST(GNU_CC)
AC_SUBST(GNU_CXX)

AC_SUBST(STL_FLAGS)
AC_SUBST(WRAP_STL_INCLUDES)

dnl ========================================================
dnl Checks for programs.
dnl ========================================================
if test "$COMPILE_ENVIRONMENT"; then

dnl ========================================================
dnl = Mac OS X toolchain support
dnl ========================================================

dnl The universal machinery sets UNIVERSAL_BINARY to inform packager.mk
dnl that a universal binary is being produced.
AC_SUBST(UNIVERSAL_BINARY)

MOZ_ARG_WITH_STRING(unify-dist,
[  --with-unify-dist=dir   Location of the dist directory to unify with at packaging time (Mac OS X universal build only)],
    UNIFY_DIST=$withval)
if test -n "$UNIVERSAL_BINARY"; then
    if test -z "$UNIFY_DIST"; then
        AC_MSG_ERROR([You need to provide the --with-unify-dist=dir argument when performing a universal build])
    fi
    case "$UNIFY_DIST" in
    /*)
        ;;
    *)
        UNIFY_DIST="${MOZ_BUILD_ROOT}/${UNIFY_DIST}"
        ;;
    esac
fi
AC_SUBST(UNIFY_DIST)

dnl ========================================================
dnl = Mac OS X SDK support
dnl ========================================================
MACOS_SDK_DIR=
MOZ_ARG_WITH_STRING(macos-sdk,
[  --with-macos-sdk=dir    Location of platform SDK to use (Mac OS X only)],
    MACOS_SDK_DIR=$withval)

MACOS_PRIVATE_FRAMEWORKS_DIR_DEFAULTED=
MOZ_ARG_WITH_STRING(macos-private-frameworks,
[  --with-macos-private-frameworks=dir    Location of private frameworks to use (Mac OS X only)],
    MACOS_PRIVATE_FRAMEWORKS_DIR=$withval,
    MACOS_PRIVATE_FRAMEWORKS_DIR=/System/Library/PrivateFrameworks
    MACOS_PRIVATE_FRAMEWORKS_DEFAULTED=1)

if test -z "${MACOS_PRIVATE_FRAMEWORKS_DEFAULTED}"; then
  if test -z "$CROSS_COMPILE"; then
    AC_MSG_WARN([You should only be using --with-macos-private-frameworks when cross-compiling.])
  fi
  if test ! -d "$MACOS_PRIVATE_FRAMEWORKS_DIR"; then
    AC_MSG_ERROR([PrivateFrameworks directory not found.])
  fi
fi

dnl MACOS_SDK_DIR will be set to the SDK location whenever one is in use.
AC_SUBST(MACOS_SDK_DIR)
AC_SUBST(MACOS_PRIVATE_FRAMEWORKS_DIR)

if test "$MACOS_SDK_DIR"; then
  dnl Sync this section with the ones in NSPR and NSS.
  dnl Changes to the cross environment here need to be accounted for in
  dnl the libIDL checks (below) and xpidl build.

  if test ! -d "$MACOS_SDK_DIR"; then
    AC_MSG_ERROR([SDK not found.  When using --with-macos-sdk, you must
specify a valid SDK.  SDKs are installed when the optional cross-development
tools are selected during the Xcode/Developer Tools installation.])
  fi

  CFLAGS="$CFLAGS -isysroot ${MACOS_SDK_DIR}"
  CXXFLAGS="$CXXFLAGS -isysroot ${MACOS_SDK_DIR}"

  dnl CPP/CXXCPP needs to be set for MOZ_CHECK_HEADER.
  CPP="$CPP -isysroot ${MACOS_SDK_DIR}"
  CXXCPP="$CXXCPP -isysroot ${MACOS_SDK_DIR}"

  AC_LANG_SAVE
  AC_MSG_CHECKING([for valid compiler/Mac OS X SDK combination])
  AC_LANG_CPLUSPLUS
  AC_TRY_COMPILE([#include <new>],[],
   result=yes,
   result=no)
  AC_LANG_RESTORE
  AC_MSG_RESULT($result)

  if test "$result" = "no" ; then
    AC_MSG_ERROR([The selected compiler and Mac OS X SDK are incompatible.])
  fi
fi

AC_PATH_XTRA

XCFLAGS="$X_CFLAGS"

fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl set the defaults first
dnl ========================================================
AS_BIN=$AS
AR_EXTRACT='$(AR) x'
AS='$(CC)'
AS_DASH_C_FLAG='-c'
DLL_PREFIX=lib
LIB_PREFIX=lib
DLL_SUFFIX=.so
OBJ_SUFFIX=o
LIB_SUFFIX=a
IMPORT_LIB_SUFFIX=
DIRENT_INO=d_ino
MOZ_USER_DIR=".mozilla"

MOZ_FIX_LINK_PATHS="-Wl,-rpath-link,${DIST}/bin -Wl,-rpath-link,${prefix}/lib"

MOZ_FS_LAYOUT=unix

dnl Configure platform-specific CPU architecture compiler options.
dnl ==============================================================
if test "$COMPILE_ENVIRONMENT"; then
    MOZ_ARCH_OPTS
fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl Suppress Clang Argument Warnings
dnl ========================================================
if test -n "${CLANG_CC}${CLANG_CL}"; then
    _WARNINGS_CFLAGS="-Qunused-arguments ${_WARNINGS_CFLAGS}"
    CPPFLAGS="-Qunused-arguments ${CPPFLAGS}"
fi
if test -n "${CLANG_CXX}${CLANG_CL}"; then
    _WARNINGS_CXXFLAGS="-Qunused-arguments ${_WARNINGS_CXXFLAGS}"
fi

if test -n "$COMPILE_ENVIRONMENT"; then
   MOZ_CONFIG_SANITIZE
fi

dnl ========================================================
dnl GNU specific defaults
dnl ========================================================
if test "$GNU_CC"; then
    MMX_FLAGS="-mmmx"
    SSE_FLAGS="-msse"
    SSE2_FLAGS="-msse2"
    SSSE3_FLAGS="-mssse3"
    # FIXME: Let us build with strict aliasing. bug 414641.
    CFLAGS="$CFLAGS -fno-strict-aliasing"
    MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -Wl,-h,$(DSO_SONAME) -o $@'
    MKCSHLIB='$(CC) $(CFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -Wl,-h,$(DSO_SONAME) -o $@'
    WARNINGS_AS_ERRORS='-Werror'
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-fPIC'
    ASFLAGS="$ASFLAGS -fPIC"
    AC_MSG_CHECKING([for --noexecstack option to as])
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS -Wa,--noexecstack"
    AC_TRY_COMPILE(,,AC_MSG_RESULT([yes])
                     [ASFLAGS="$ASFLAGS -Wa,--noexecstack"],
                     AC_MSG_RESULT([no]))
    CFLAGS=$_SAVE_CFLAGS
    AC_MSG_CHECKING([for -z noexecstack option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,-z,noexecstack"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes]),
                  AC_MSG_RESULT([no])
                  LDFLAGS=$_SAVE_LDFLAGS)

    AC_MSG_CHECKING([for -z text option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,-z,text"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes])
                  [NSPR_LDFLAGS="$NSPR_LDFLAGS -Wl,-z,text"],
                  AC_MSG_RESULT([no])
                  LDFLAGS=$_SAVE_LDFLAGS)

    AC_MSG_CHECKING([for --build-id option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,--build-id"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes])
                  [NSPR_LDFLAGS="$NSPR_LDFLAGS -Wl,--build-id"],
                  AC_MSG_RESULT([no])
                  LDFLAGS=$_SAVE_LDFLAGS)

    AC_MSG_CHECKING([for --ignore-unresolved-symbol option to ld])
    HAVE_LINKER_SUPPORT_IGNORE_UNRESOLVED=
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,--ignore-unresolved-symbol,environ"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes])
                  [HAVE_LINKER_SUPPORT_IGNORE_UNRESOLVED=1],
                  AC_MSG_RESULT([no]))
    LDFLAGS=$_SAVE_LDFLAGS

    # Check for -mssse3 on $CC
    AC_MSG_CHECKING([if toolchain supports -mssse3 option])
    HAVE_TOOLCHAIN_SUPPORT_MSSSE3=
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS -mssse3"
    AC_TRY_COMPILE([asm ("pmaddubsw %xmm2,%xmm3");],,AC_MSG_RESULT([yes])
                     [HAVE_TOOLCHAIN_SUPPORT_MSSSE3=1],
                     AC_MSG_RESULT([no]))
    CFLAGS=$_SAVE_CFLAGS

    # Check for -msse4.1 on $CC
    AC_MSG_CHECKING([if toolchain supports -msse4.1 option])
    HAVE_TOOLCHAIN_SUPPORT_MSSE4_1=
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS -msse4.1"
    AC_TRY_COMPILE([asm ("pmulld %xmm6,%xmm0");],,AC_MSG_RESULT([yes])
                     [HAVE_TOOLCHAIN_SUPPORT_MSSE4_1=1],
                     AC_MSG_RESULT([no]))
    CFLAGS=$_SAVE_CFLAGS

    case "${CPU_ARCH}" in
    x86 | x86_64)
      AC_MSG_CHECKING(for x86 AVX2 asm support in compiler)
      AC_TRY_COMPILE([],
                     [asm volatile ("vpermq      \$0xd8,%ymm0,%ymm0 \n");],
                     result="yes", result="no")
      AC_MSG_RESULT("$result")
      if test "$result" = "yes"; then
          HAVE_X86_AVX2=1
      fi
      ;;

    ppc*)
      AC_MSG_CHECKING([whether we can enable AltiVec support])
      HAVE_ALTIVEC=
      _SAVE_CFLAGS=$CFLAGS
      CFLAGS="$CFLAGS -maltivec"
      AC_TRY_COMPILE(,,AC_MSG_RESULT([yes])
                       [HAVE_ALTIVEC=1],
                       AC_MSG_RESULT([no]))
      CFLAGS=$_SAVE_CFLAGS
      ;;
    esac

    DSO_LDOPTS='-shared'
    if test "$GCC_USE_GNU_LD"; then
        # Some tools like ASan use a runtime library that is only
        # linked against executables, so we must allow undefined
        # symbols for shared objects in some cases.
        if test -z "$MOZ_NO_WLZDEFS"; then
            # Don't allow undefined symbols in libraries
            DSO_LDOPTS="$DSO_LDOPTS -Wl,-z,defs"

            # BSDs need `environ' exposed for posix_spawn (bug 753046)
            case "$OS_TARGET" in
            DragonFly|FreeBSD|NetBSD|OpenBSD)
                if test -n "$HAVE_LINKER_SUPPORT_IGNORE_UNRESOLVED"; then
                    DSO_LDOPTS="$DSO_LDOPTS -Wl,--ignore-unresolved-symbol,environ"
                else
                    DSO_LDOPTS="$DSO_LDOPTS -Wl,--warn-unresolved-symbols"
                fi
                ;;
            esac
        fi
    fi

    _DEFINES_CFLAGS='-include $(topobjdir)/mozilla-config.h -DMOZILLA_CLIENT'
    _USE_CPP_INCLUDE_FLAG=1

    ASFLAGS="$ASFLAGS $_DEFINES_CFLAGS"

else
    MKSHLIB='$(LD) $(DSO_LDOPTS) -h $(DSO_SONAME) -o $@'
    MKCSHLIB='$(LD) $(DSO_LDOPTS) -h $(DSO_SONAME) -o $@'

    DSO_LDOPTS='-shared'
    if test "$GNU_LD"; then
        # Don't allow undefined symbols in libraries
        DSO_LDOPTS="$DSO_LDOPTS -z defs"
    fi

    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-KPIC'
    _DEFINES_CFLAGS='$(ACDEFINES) -D_MOZILLA_CONFIG_H_ -DMOZILLA_CLIENT'
fi

if test "$GNU_CXX"; then
    # FIXME: Let us build with strict aliasing. bug 414641.
    CXXFLAGS="$CXXFLAGS -fno-exceptions -fno-strict-aliasing"

    _DEFINES_CXXFLAGS='-DMOZILLA_CLIENT -include $(topobjdir)/mozilla-config.h'
    _USE_CPP_INCLUDE_FLAG=1

else
    _DEFINES_CXXFLAGS='-DMOZILLA_CLIENT -D_MOZILLA_CONFIG_H_ $(ACDEFINES)'
fi

dnl ========================================================
dnl = Use Valgrind
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(valgrind,
[  --enable-valgrind       Enable Valgrind integration hooks (default=no)],
    MOZ_VALGRIND=1,
    MOZ_VALGRIND= )
if test -n "$MOZ_VALGRIND"; then
    MOZ_CHECK_HEADER([valgrind/valgrind.h], [],
        AC_MSG_ERROR(
            [--enable-valgrind specified but Valgrind is not installed]))
    AC_DEFINE(MOZ_VALGRIND)
fi
AC_SUBST(MOZ_VALGRIND)

# For profiling builds keep the symbol information
if test "$MOZ_PROFILING" -a -z "$STRIP_FLAGS"; then
    case "$OS_TARGET" in
    Linux|DragonFly|FreeBSD|NetBSD|OpenBSD)
        STRIP_FLAGS="--strip-debug"
        ;;
    esac
fi

dnl ========================================================
dnl System overrides of the defaults for host
dnl ========================================================
case "$host" in
*mingw*)
    if test -n "$_WIN32_MSVC"; then
        HOST_AR=lib
        HOST_AR_FLAGS='-NOLOGO -OUT:$@'
        HOST_CFLAGS="$HOST_CFLAGS -TC -nologo"
        HOST_RANLIB='echo ranlib'
    else
        HOST_CFLAGS="$HOST_CFLAGS -mwindows"
    fi
    HOST_CFLAGS="$HOST_CFLAGS -DXP_WIN32 -DXP_WIN -DWIN32 -D_WIN32 -D_CRT_SECURE_NO_WARNINGS"
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O2}"
    HOST_BIN_SUFFIX=.exe

    case "${host_cpu}" in
    i*86)
        if test -n "$_WIN32_MSVC"; then
            HOST_LDFLAGS="$HOST_LDFLAGS -MACHINE:X86"
        fi
        ;;
    x86_64)
        if test -n "$_WIN32_MSVC"; then
            HOST_LDFLAGS="$HOST_LDFLAGS -MACHINE:X64"
        fi
        HOST_CFLAGS="$HOST_CFLAGS -D_AMD64_"
        ;;
    esac
    ;;

*-darwin*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX -DXP_MACOSX"
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O3}"
    ;;

*-linux*|*-kfreebsd*-gnu|*-gnu*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX"
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O3}"
    ;;
 
*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX"
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O2}"
    ;;
esac

dnl ==============================================================
dnl Get mozilla version from central milestone file
dnl ==============================================================
MOZILLA_VERSION=`$PYTHON $srcdir/python/mozbuild/mozbuild/milestone.py --topsrcdir $srcdir`
MOZILLA_UAVERSION=`$PYTHON $srcdir/python/mozbuild/mozbuild/milestone.py --topsrcdir $srcdir --uaversion`
MOZILLA_SYMBOLVERSION=`$PYTHON $srcdir/python/mozbuild/mozbuild/milestone.py --topsrcdir $srcdir --symbolversion`
if test -z "$MOZILLA_VERSION"; then
  AC_MSG_ERROR([failed to read version info from milestone file])
fi

AC_DEFINE_UNQUOTED(MOZILLA_VERSION,"$MOZILLA_VERSION")
AC_DEFINE_UNQUOTED(MOZILLA_VERSION_U,$MOZILLA_VERSION)
AC_DEFINE_UNQUOTED(MOZILLA_UAVERSION,"$MOZILLA_UAVERSION")
AC_DEFINE_UNQUOTED(MOZILLA_UAVERSION_U,$MOZILLA_UAVERSION)
AC_SUBST(MOZILLA_SYMBOLVERSION)
AC_SUBST(MOZILLA_UAVERSION)
AC_SUBST(MOZILLA_UAVERSION_U)

MOZ_DOING_LTO(lto_is_enabled)

dnl ========================================================
dnl Spidermonkey link-time optimization support
dnl ========================================================

# We want LTO enabled by default in Spidermonkey if we're building it shared.
if test -n "$JS_SHARED_LIBRARY"; then
    JS_LTO=1
fi

MOZ_ARG_DISABLE_BOOL(js-lto,
[  --disable-js-lto        Disable link-time optimization for the Spidermonkey library],
    JS_LTO=,
    JS_LTO=1)

if test -n "$JS_LTO"; then
    AC_DEFINE(JS_LTO)
fi

AC_SUBST(JS_LTO)

dnl ========================================================
dnl System overrides of the defaults for target
dnl ========================================================

case "$target" in
*-darwin*)
    MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
    MKCSHLIB='$(CC) $(CFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
    MOZ_OPTIMIZE_FLAGS="-O3"
    CXXFLAGS="$CXXFLAGS -stdlib=libc++"
    DLL_SUFFIX=".dylib"
    DSO_LDOPTS=''
    STRIP_FLAGS="$STRIP_FLAGS -x -S"

    # The ExceptionHandling framework is needed for Objective-C exception
    # logging code in nsObjCExceptions.h. Currently we only use that in debug
    # builds.
    MOZ_DEBUG_LDFLAGS="$MOZ_DEBUG_LDFLAGS -framework ExceptionHandling";

    if test "x$lto_is_enabled" = "xyes"; then
        echo "Skipping -dead_strip because lto is enabled."
    dnl DTrace and -dead_strip don't interact well. See bug 403132.
    dnl ===================================================================
    elif test "x$enable_dtrace" = "xyes"; then
        echo "Skipping -dead_strip because DTrace is enabled. See bug 403132."
    else
        dnl check for the presence of the -dead_strip linker flag
        AC_MSG_CHECKING([for -dead_strip option to ld])
        _SAVE_LDFLAGS=$LDFLAGS
        LDFLAGS="$LDFLAGS -Wl,-dead_strip"
        AC_TRY_LINK(,[return 0;],_HAVE_DEAD_STRIP=1,_HAVE_DEAD_STRIP=)
        if test -n "$_HAVE_DEAD_STRIP" ; then
            AC_MSG_RESULT([yes])
            MOZ_OPTIMIZE_LDFLAGS="-Wl,-dead_strip"
        else
            AC_MSG_RESULT([no])
        fi

        LDFLAGS=$_SAVE_LDFLAGS
    fi

    dnl With newer linkers we need to pass -allow_heap_execute because of
    dnl Microsoft Silverlight (5.1.10411.0 at least).
    AC_MSG_CHECKING([for -allow_heap_execute option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,-allow_heap_execute"
    AC_TRY_LINK(,[return 0;],_HAVE_ALLOW_HEAP_EXECUTE=1,
                _HAVE_ALLOW_HEAP_EXECUTE=)
    if test -n "$_HAVE_ALLOW_HEAP_EXECUTE" ; then
        AC_MSG_RESULT([yes])
        MOZ_ALLOW_HEAP_EXECUTE_FLAGS="-Wl,-allow_heap_execute"
    else
        AC_MSG_RESULT([no])
    fi
    LDFLAGS=$_SAVE_LDFLAGS

    MOZ_FIX_LINK_PATHS="-Wl,-executable_path,${DIST}/bin"
    ;;

*-*linux*)
    if test "$GNU_CC" -o "$GNU_CXX"; then
        MOZ_PGO_OPTIMIZE_FLAGS="-O3"
        MOZ_OPTIMIZE_FLAGS="-O2"
        if test -z "$CLANG_CC"; then
           MOZ_OPTIMIZE_FLAGS="-freorder-blocks $MOZ_OPTIMIZE_FLAGS"
        fi
    fi

    case "${target_cpu}" in
    alpha*)
        CFLAGS="$CFLAGS -mieee"
        CXXFLAGS="$CXXFLAGS -mieee"
    ;;
    esac
    ;;
*-mingw*)
    DSO_CFLAGS=
    DSO_PIC_CFLAGS=
    DLL_SUFFIX=.dll
    RC=rc.exe
    # certain versions of cygwin's makedepend barf on the
    # #include <string> vs -I./dist/include/string issue so don't use it
    if test -n "$GNU_CC" -o -n "$CLANG_CC"; then
        CC="$CC -mwindows"
        CXX="$CXX -mwindows"
        CPP="$CPP -mwindows"
        CFLAGS="$CFLAGS -mms-bitfields"
        CXXFLAGS="$CXXFLAGS -mms-bitfields"
        DSO_LDOPTS='-shared'
        MKSHLIB='$(CXX) $(DSO_LDOPTS) -o $@'
        MKCSHLIB='$(CC) $(DSO_LDOPTS) -o $@'
        RC='$(WINDRES)'
        # Use static libgcc and libstdc++
        LDFLAGS="$LDFLAGS -static"
        NSPR_LDFLAGS="$NSPR_LDFLAGS -static-libgcc"
        # Use temp file for windres (bug 213281)
        RCFLAGS='-O coff --use-temp-file'
        # mingw doesn't require kernel32, user32, and advapi32 explicitly
        LIBS="$LIBS -luuid -lgdi32 -lwinmm -lwsock32 -luserenv -lsecur32"
        MOZ_FIX_LINK_PATHS=
        DLL_PREFIX=
        IMPORT_LIB_SUFFIX=a

        WIN32_CONSOLE_EXE_LDFLAGS=-mconsole
        WIN32_GUI_EXE_LDFLAGS=-mwindows

        # GCC/binutils can't link to a function if we try to include dllexport function
        # in the same library as dllimport caller. To work around it, we build NSPR
        # and NSS with -mnop-fun-dllimport flag. The drawback of this solution is that
        # function thunks need to be generated for cross-DLL calls.
        MOZ_FOLD_LIBS_FLAGS=-mnop-fun-dllimport
    else
        TARGET_COMPILER_ABI=msvc
        HOST_LD='$(LD)'
        if test "$AS_BIN"; then
            AS="$(basename "$AS_BIN")"
        fi
        AR='lib'
        AR_FLAGS='-NOLOGO -OUT:$@'
        AR_EXTRACT=
        RANLIB='echo not_ranlib'
        STRIP='echo not_strip'
        PKG_SKIP_STRIP=1
        OBJ_SUFFIX=obj
        LIB_SUFFIX=lib
        DLL_PREFIX=
        LIB_PREFIX=
        IMPORT_LIB_SUFFIX=lib
        MKSHLIB='$(LD) -NOLOGO -DLL -OUT:$@ -PDB:$(LINK_PDBFILE) $(DSO_LDOPTS)'
        MKCSHLIB='$(LD) -NOLOGO -DLL -OUT:$@ -PDB:$(LINK_PDBFILE) $(DSO_LDOPTS)'
        WIN32_SUBSYSTEM_VERSION=6.01
        WIN32_CONSOLE_EXE_LDFLAGS=-SUBSYSTEM:CONSOLE,$WIN32_SUBSYSTEM_VERSION
        WIN32_GUI_EXE_LDFLAGS=-SUBSYSTEM:WINDOWS,$WIN32_SUBSYSTEM_VERSION
        DSO_LDOPTS=-SUBSYSTEM:WINDOWS,$WIN32_SUBSYSTEM_VERSION
        _USE_CPP_INCLUDE_FLAG=1
        _DEFINES_CFLAGS='-FI $(topobjdir)/mozilla-config.h -DMOZILLA_CLIENT'
        _DEFINES_CXXFLAGS='-FI $(topobjdir)/mozilla-config.h -DMOZILLA_CLIENT'
        CFLAGS="$CFLAGS -W3 -Gy -Zc:inline"
        CXXFLAGS="$CXXFLAGS -W3 -Gy -Zc:inline"
        if test -z "$CLANG_CL"; then
            CFLAGS="$CFLAGS -utf-8"
            CXXFLAGS="$CXXFLAGS -utf-8"
        fi
        if test "$CPU_ARCH" = "x86"; then
            changequote(,)
            dnl VS2012+ defaults to -arch:SSE2. We want to target nothing
            dnl more recent, so no need to set it explicitly in the default
            dnl case.
            changequote([,])
            SSE_FLAGS="-arch:SSE"
            SSE2_FLAGS="-arch:SSE2"
            dnl MSVC allows the use of intrinsics without any flags
            dnl and doesn't have a separate arch for SSSE3
            SSSE3_FLAGS="-arch:SSE2"
        fi
        dnl clang-cl requires appropriate flags to enable SSSE3 support
        dnl on all architectures.
        if test -n "$CLANG_CL"; then
            SSSE3_FLAGS="-mssse3"
        fi
        dnl VS2013+ requires -FS when parallel building by make -jN.
        dnl If nothing, compiler sometimes causes C1041 error.
        CFLAGS="$CFLAGS -FS"
        CXXFLAGS="$CXXFLAGS -FS"
        dnl VS2013+ supports -Gw for better linker optimizations.
        dnl http://blogs.msdn.com/b/vcblog/archive/2013/09/11/introducing-gw-compiler-switch.aspx
        dnl Disabled on ASan because it causes false-positive ODR violations.
        if test -z "$MOZ_ASAN"; then
            CFLAGS="$CFLAGS -Gw"
            CXXFLAGS="$CXXFLAGS -Gw"
        fi
        # khuey says we can safely ignore MSVC warning C4251
        # MSVC warning C4244 (implicit type conversion may lose data) warns
        # and requires workarounds for perfectly valid code.  Also, GCC/clang
        # don't warn about it by default. So for consistency/sanity, we turn
        # it off on MSVC, too.
        # MSVC warning C4267 warns for narrowing type conversions from size_t
        # to 32-bit integer types on 64-bit platforms.  Since this is virtually
        # the same thing as C4244, we disable C4267, too.
        # MSVC warning C4345 warns of newly conformant behavior as of VS2003.
        # MSVC warning C4351 warns of newly conformant behavior as of VS2005.
        # MSVC warning C4800 warns when a value is implicitly cast to bool,
        # because this also forces narrowing to a single byte, which can be a
        # perf hit.  But this matters so little in practice (and often we want
        # that behavior) that it's better to turn it off.
        # MSVC warning wd4595 warns non-member operator new or delete functions
        # may not be declared inline, as of VS2015 Update 2.
        CFLAGS="$CFLAGS -wd4244 -wd4267"
        CXXFLAGS="$CXXFLAGS -wd4251 -wd4244 -wd4267 -wd4345 -wd4351 -wd4800 -wd4595"
        if test -n "$CLANG_CL"; then
            # XXX We should combine some of these with our generic GCC-style
            # warning checks.
            #
            # Suppress the clang-cl warning for the inline 'new' and 'delete' in mozalloc
            CXXFLAGS="$CXXFLAGS -Wno-inline-new-delete"
            # We use offsetof on non-POD objects all the time.
            # We also suppress this warning on other platforms.
            CXXFLAGS="$CXXFLAGS -Wno-invalid-offsetof"
            # MFBT thinks clang-cl supports constexpr, which it does, but
            # not everything in Windows C++ headers supports constexpr
            # as we might expect until MSVC 2015, so turn off this warning
            # for now.
            CXXFLAGS="$CXXFLAGS -Wno-invalid-constexpr"
            # This warns for reasonable things like:
            #   enum { X = 0xffffffffU };
            # which is annoying for IDL headers.
            CXXFLAGS="$CXXFLAGS -Wno-microsoft-enum-value"
            # This warns for cases that would be reached by the Microsoft
            # #include rules, but also currently warns on cases that would
            # *also* be reached by standard C++ include rules.  That
            # behavior doesn't seem useful, so we turn it off.
            CXXFLAGS="$CXXFLAGS -Wno-microsoft-include"
            # We normally error out on unknown pragmas, but since clang-cl
            # claims to be MSVC, it would be difficult to add
            # #if defined(_MSC_VER) && !defined(__clang__) everywhere we
            # use such pragmas, so just ignore them.
            CFLAGS="$CFLAGS -Wno-unknown-pragmas"
            CXXFLAGS="$CXXFLAGS -Wno-unknown-pragmas"
            # We get errors about various #pragma intrinsic directives from
            # clang-cl, and we don't need to hear about those.
            CFLAGS="$CFLAGS -Wno-ignored-pragmas"
            CXXFLAGS="$CXXFLAGS -Wno-ignored-pragmas"
            # clang-cl's Intrin.h marks things like _ReadWriteBarrier
            # as __attribute((__deprecated__)).  This is nice to know,
            # but since we don't get the equivalent warning from MSVC,
            # let's just ignore it.
            CFLAGS="$CFLAGS -Wno-deprecated-declarations"
            CXXFLAGS="$CXXFLAGS -Wno-deprecated-declarations"
            # We use a function like:
            #   __declspec(noreturn) __inline void f() {}
            # which -Winvalid-noreturn complains about.  Again, MSVC seems
            # OK with it, so let's silence the warning.
            CFLAGS="$CFLAGS -Wno-invalid-noreturn"
            CXXFLAGS="$CXXFLAGS -Wno-invalid-noreturn"
            # Missing |override| on virtual function declarations isn't
            # something that MSVC currently warns about.
            CXXFLAGS="$CXXFLAGS -Wno-inconsistent-missing-override"
            # We use -DHAS_EXCEPTIONS=0, which removes the |throw()|
            # declaration on |operator delete(void*)|.  However, clang-cl
            # must internally declare |operator delete(void*)| differently,
            # which causes this warning for virtually every file in the
            # tree.  clang-cl doesn't support -fno-exceptions or equivalent,
            # so there doesn't seem to be any way to convince clang-cl to
            # declare |delete| differently.  Therefore, suppress this
            # warning.
            CXXFLAGS="$CXXFLAGS -Wno-implicit-exception-spec-mismatch"
            # At least one MSVC header and several headers in-tree have
            # unused typedefs, so turn this on.
            CXXFLAGS="$CXXFLAGS -Wno-unused-local-typedef"
            # Several JS engine header files use __declspec(dllimport) on
            # classes, and clang-cl helpfully warns about its non-support
            # for such cases.  We're not particularly worried about that,
            # so ignore that warning.
            CXXFLAGS="$CXXFLAGS -Wno-ignored-attributes"
        fi
        # make 'foo == bar;' error out
        CFLAGS="$CFLAGS -we4553"
        CXXFLAGS="$CXXFLAGS -we4553"
        LIBS="$LIBS kernel32.lib user32.lib gdi32.lib winmm.lib wsock32.lib advapi32.lib secur32.lib"
        MOZ_DEBUG_LDFLAGS='-DEBUG -DEBUGTYPE:CV'
        WARNINGS_AS_ERRORS='-WX'
        MOZ_OPTIMIZE_FLAGS='-O1 -Oi'
        MOZ_FIX_LINK_PATHS=
        AC_MSG_CHECKING(for optimal linker configuration)
        num_cores=$($PYTHON -c 'import multiprocessing; print(multiprocessing.cpu_count())')
        icf_iters=$($PYTHON -c 'import multiprocessing; print(min(16,multiprocessing.cpu_count()))')
        cgthreads=$($PYTHON -c 'import multiprocessing; print(min(8,multiprocessing.cpu_count()))')
        AC_MSG_RESULT("CG:${cgthreads}/ICF:${icf_iters}/${num_cores}c")
        LDFLAGS="$LDFLAGS -LARGEADDRESSAWARE -NXCOMPAT -DYNAMICBASE -OPT:REF -OPT:ICF=${icf_iters} -CGTHREADS:${cgthreads}"
        if test -z "$DEVELOPER_OPTIONS"; then
            LDFLAGS="$LDFLAGS -RELEASE"
        fi
        dnl For profile-guided optimization
        PROFILE_GEN_CFLAGS="-GL"
        PROFILE_GEN_LDFLAGS="-LTCG:PGINSTRUMENT"
        dnl XXX: PGO builds can fail with warnings treated as errors,
        dnl specifically "no profile data available" appears to be
        dnl treated as an error sometimes. This might be a consequence
        dnl of using WARNINGS_AS_ERRORS in some modules, combined
        dnl with the linker doing most of the work in the whole-program
        dnl optimization/PGO case. I think it's probably a compiler bug,
        dnl but we work around it here.
        PROFILE_USE_CFLAGS="-GL -wd4624 -wd4952"
        dnl XXX: should be -LTCG:PGOPTIMIZE, but that fails on libxul.
        dnl Probably also a compiler bug, but what can you do?
        PROFILE_USE_LDFLAGS="-LTCG:PGUPDATE"
        RCFLAGS="-nologo"
        dnl Minimum required VS version supports SSSE3, SSE4.1 and AVX2.
        HAVE_TOOLCHAIN_SUPPORT_MSSSE3=1
        HAVE_TOOLCHAIN_SUPPORT_MSSE4_1=1
        HAVE_X86_AVX2=1
    fi
    AC_DEFINE(WIN32_LEAN_AND_MEAN)
    dnl See http://support.microsoft.com/kb/143208 to use STL
    AC_DEFINE(NOMINMAX)
    BIN_SUFFIX='.exe'
    MOZ_USER_DIR="Mozilla"

    case "$host_os" in
    cygwin*|msvc*|mks*)
        AC_MSG_ERROR([Using a Cygwin build environment is unsupported. Configure cannot check for presence of necessary headers. Please upgrade to MozillaBuild; see https://developer.mozilla.org/en/Windows_Build_Prerequisites.])
        ;;
    esac

    case "$target" in
    i*86-*)
        if test -n "$GNU_CC"; then
            CFLAGS="$CFLAGS -mstackrealign -fno-keep-inline-dllexport"
            CXXFLAGS="$CXXFLAGS -mstackrealign -fno-keep-inline-dllexport"
            LDFLAGS="$LDFLAGS -Wl,--enable-stdcall-fixup -Wl,--large-address-aware"
        else
            DSO_LDOPTS="$DSO_LDOPTS -MACHINE:X86"
            LDFLAGS="$LDFLAGS -SAFESEH"
        fi

        AC_DEFINE(_X86_)
        ;;
    x86_64-*)
        if test -n "$_WIN32_MSVC"; then
            DSO_LDOPTS="$DSO_LDOPTS -MACHINE:X64"
        fi
        AC_DEFINE(_AMD64_)
        ;;
    *)
        AC_DEFINE(_CPU_ARCH_NOT_DEFINED)
        ;;
    esac
    ;;

*-netbsd*)
    DSO_CFLAGS=''
    CFLAGS="$CFLAGS -Dunix"
    CXXFLAGS="$CXXFLAGS -Dunix"
    if $CC -E - -dM </dev/null | grep __ELF__ >/dev/null; then
        DLL_SUFFIX=".so"
        DSO_PIC_CFLAGS='-fPIC -DPIC'
        DSO_LDOPTS='-shared'
        BIN_FLAGS='-Wl,--export-dynamic'
    else
        DSO_PIC_CFLAGS='-fPIC -DPIC'
        DLL_SUFFIX=".so.1.0"
        DSO_LDOPTS='-shared'
    fi
    # This will fail on a.out systems prior to 1.5.1_ALPHA.
    if test "$LIBRUNPATH"; then
        DSO_LDOPTS="-Wl,-R$LIBRUNPATH $DSO_LDOPTS"
    fi
    MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -Wl,-soname,$(DSO_SONAME) -o $@'
    MKCSHLIB='$(CC) $(CFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -Wl,-soname,$(DSO_SONAME) -o $@'
    ;;

*-openbsd*)
    if test "$SO_VERSION"; then
        DLL_SUFFIX=".so.$SO_VERSION"
    else
        DLL_SUFFIX=".so.1.0"
    fi
    if test -z "$X11BASE"; then
        X11BASE=/usr/X11R6
    fi
    MOZ_FIX_LINK_PATHS="$MOZ_FIX_LINK_PATHS -Wl,-rpath-link,${X11BASE}/lib"
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-fPIC'
    DSO_LDOPTS='-shared -fPIC'
    if test "$LIBRUNPATH"; then
        DSO_LDOPTS="-R$LIBRUNPATH $DSO_LDOPTS"
    fi
    ;;

*-solaris*)
dnl Set NSDISTMODE to copy mode on SunOS automatically. The dynamic linker
dnl uses the real path of a symlink after resolving it, which breaks the
dnl default mode that relies on relative symlinks being handled a certain way.

    if test -z "$NSDISTMODE"; then
       NSDISTMODE=copy
    fi

    if test "$CPU_ARCH" = "x86"; then
       MOZ_FIX_LINK_PATHS="-L${DIST}/bin -R'\$\$ORIGIN':/usr/gcc/10/lib"
    elif test "$CPU_ARCH" = "x86_64"; then
       MOZ_FIX_LINK_PATHS="-L${DIST}/bin -R'\$\$ORIGIN':/usr/gcc/10/lib/amd64"
    fi    
    ;;

esac

AC_SUBST_LIST(MMX_FLAGS)
AC_SUBST_LIST(SSE_FLAGS)
AC_SUBST_LIST(SSE2_FLAGS)
AC_SUBST_LIST(SSSE3_FLAGS)

AC_SUBST(MOZ_LINKER)
if test -n "$MOZ_LINKER"; then
  AC_DEFINE(MOZ_LINKER)
  MOZ_LINKER_EXTRACT=1
  AC_CHECK_PROGS(XZ, xz)
fi

dnl Only one oddball right now (QNX), but this gives us flexibility
dnl if any other platforms need to override this in the future.
AC_DEFINE_UNQUOTED(D_INO,$DIRENT_INO)

dnl ========================================================
dnl = Flags to strip unused symbols from .so components and
dnl = to export jemalloc symbols when linking a program
dnl ========================================================
case "$target" in
    *-linux*|*-kfreebsd*-gnu|*-gnu*)
        MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-Wl,--version-script -Wl,$(BUILD_TOOLS)/gnu-ld-scripts/components-version-script'
        ;;
    *-darwin*)
        MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-Wl,-exported_symbols_list -Wl,$(BUILD_TOOLS)/gnu-ld-scripts/components-export-list'
        ;;
    *-mingw*)
        if test -n "$GNU_CC"; then
           MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-Wl,--version-script,$(BUILD_TOOLS)/gnu-ld-scripts/components-version-script'
        fi
        ;;
esac

if test -z "$COMPILE_ENVIRONMENT"; then
    SKIP_COMPILER_CHECKS=1
    SKIP_LIBRARY_CHECKS=1
    PKG_SKIP_STRIP=1
    MOZ_DEBUGGING_OPTS
else
    MOZ_COMPILER_OPTS
fi # COMPILE_ENVIRONMENT

if test -z "$SKIP_COMPILER_CHECKS"; then
dnl Checks for typedefs, structures, and compiler characteristics.
dnl ========================================================
AC_C_CONST
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_LANG_CPLUSPLUS
AC_LANG_C

AC_LANG_CPLUSPLUS

MOZ_CXX11

AC_LANG_C

case "${OS_TARGET}" in
Darwin)
  ;;
*)
  STL_FLAGS="-I${DIST}/stl_wrappers"
  WRAP_STL_INCLUDES=1
  ;;
esac

dnl Checks for header files.
dnl ========================================================
AC_HEADER_DIRENT
case "$target_os" in
bitrig*|dragonfly*|freebsd*|openbsd*)
# for stuff like -lXshm
    CPPFLAGS="${CPPFLAGS} ${X_CFLAGS}"
    ;;
esac

dnl Check for sin_len and sin6_len - used by SCTP; only appears in Mac/*BSD generally
AC_CACHE_CHECK(for sockaddr_in.sin_len,
                   ac_cv_sockaddr_in_sin_len,
                   [AC_TRY_COMPILE([#ifdef HAVE_SYS_TYPES_H
                                    #include <sys/types.h>
                                    #endif
                                    #include <netinet/in.h>
                                    struct sockaddr_in x;
                                    void *foo = (void*) &x.sin_len;],
                                   [],
                                   [ac_cv_sockaddr_in_sin_len=true],
                                   [ac_cv_sockaddr_in_sin_len=false])])
if test "$ac_cv_sockaddr_in_sin_len" = true ; then
  AC_DEFINE(HAVE_SIN_LEN)
dnl HAVE_CONN_LEN must be the same as HAVE_SIN_LEN (and HAVE_SIN6_LEN too)
  AC_DEFINE(HAVE_SCONN_LEN)
fi

AC_CACHE_CHECK(for sockaddr_in6.sin6_len,
               ac_cv_sockaddr_in6_sin6_len,
               [AC_TRY_COMPILE([#ifdef HAVE_SYS_TYPES_H
                                #include <sys/types.h>
                                #endif
                                #include <netinet/in.h>
                                struct sockaddr_in6 x;
                                void *foo = (void*) &x.sin6_len;],
                               [],
                               [ac_cv_sockaddr_in6_sin6_len=true],
                               [ac_cv_sockaddr_in6_sin6_len=false])])
if test "$ac_cv_sockaddr_in6_sin6_len" = true ; then
  AC_DEFINE(HAVE_SIN6_LEN)
fi

AC_CACHE_CHECK(for sockaddr.sa_len,
               ac_cv_sockaddr_sa_len,
               [AC_TRY_COMPILE([#ifdef HAVE_SYS_TYPES_H
                                #include <sys/types.h>
                                #endif
                                #include <sys/socket.h>
                                struct sockaddr x;
                                void *foo = (void*) &x.sa_len;],
                               [],
                               [ac_cv_sockaddr_sa_len=true],
                               [ac_cv_sockaddr_sa_len=false])])
if test "$ac_cv_sockaddr_sa_len" = true ; then
  AC_DEFINE(HAVE_SA_LEN)
fi

MOZ_ARG_ENABLE_BOOL(dtrace,
              [  --enable-dtrace         build with dtrace support if available (default=no)],
              [enable_dtrace="yes"],)
if test "x$enable_dtrace" = "xyes"; then
  MOZ_CHECK_HEADER(sys/sdt.h, HAVE_DTRACE=1)
  if test -n "$HAVE_DTRACE"; then
      AC_DEFINE(INCLUDE_MOZILLA_DTRACE)
  else
      AC_MSG_ERROR([dtrace enabled but sys/sdt.h not found]);
  fi
fi
AC_SUBST(HAVE_DTRACE)

dnl Checks for libraries.
dnl ========================================================
AC_CHECK_LIB(c_r, gethostbyname_r)

dnl We don't want to link with libdl even if it's present on OS X, since
dnl it's not used and not part of the default installation. OS/2 has dlfcn
dnl in libc.
dnl We don't want to link against libm or libpthread on Darwin since
dnl they both are just symlinks to libSystem and explicitly linking
dnl against libSystem causes issues when debugging (see bug 299601).
case $target in
*-darwin*)
    ;;
*)
    AC_SEARCH_LIBS(dlopen, dl,
        MOZ_CHECK_HEADER(dlfcn.h,
        AC_DEFINE(HAVE_DLOPEN)))
    ;;
esac

_SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -D_GNU_SOURCE"
AC_CHECK_FUNCS(dladdr memmem)
CFLAGS="$_SAVE_CFLAGS"

if test ! "$GNU_CXX"; then
    AC_CHECK_LIB(C, demangle)
fi

AC_CHECK_LIB(socket, socket)

XLDFLAGS="$X_LIBS"
XLIBS="$X_EXTRA_LIBS"

dnl ========================================================
dnl Checks for X libraries.
dnl Ordering is important.
dnl Xt is dependent upon SM as of X11R6
dnl ========================================================
if test -n "$MOZ_X11"; then
    AC_DEFINE_UNQUOTED(FUNCPROTO,15)
    _SAVE_LDFLAGS="$LDFLAGS"
    _SAVE_LIBS="$LIBS"
    LDFLAGS="$XLDFLAGS $LDFLAGS"
    AC_CHECK_LIB(X11, XDrawLines, [XLIBS="-lX11 $XLIBS"],
        [MISSING_X="$MISSING_X -lX11"], $XLIBS)
    AC_CHECK_LIB(Xext, XextAddDisplay, [XEXT_LIBS="-lXext"],
        [MISSING_X="$MISSING_X -lXext"], $XLIBS)

    AC_CHECK_LIB(Xt, XtFree, [ XT_LIBS="-lXt"], [
        unset ac_cv_lib_Xt_XtFree
        AC_CHECK_LIB(ICE, IceFlush, [XT_LIBS="-lICE $XT_LIBS"],, $XT_LIBS $XLIBS)
        AC_CHECK_LIB(SM, SmcCloseConnection, [XT_LIBS="-lSM $XT_LIBS"],, $XT_LIBS $XLIBS)
        AC_CHECK_LIB(Xt, XtFree, [ XT_LIBS="-lXt $XT_LIBS"],
            [MISSING_X="$MISSING_X -lXt"], $X_PRE_LIBS $XT_LIBS $XLIBS)
        ])

    dnl ========================================================
    dnl = Check for xcb
    dnl ========================================================
    AC_CHECK_LIB(xcb, xcb_connect, [XLIBS="-lxcb $XLIBS"],
        [MISSING_X="$MISSING_X -lxcb"], $XLIBS)
    AC_CHECK_LIB(xcb-shm, xcb_shm_query_version, [XLIBS="-lxcb-shm $XLIBS"],
        [MISSING_X="$MISSING_X -lxcb-shm"], $XLIBS)
    AC_CHECK_LIB(X11-xcb, XGetXCBConnection, [XLIBS="-lX11-xcb $XLIBS"],
        [MISSING_X="$MISSING_X -lX11-xcb"], $XLIBS)

    dnl ========================================================
    dnl = Check for Xss
    dnl ========================================================
    MOZ_CHECK_HEADER(X11/extensions/scrnsaver.h,
        AC_CHECK_LIB(Xss, XScreenSaverQueryInfo,
            [XSS_LIBS="-lXss $XEXT_LIBS $XLIBS"
             AC_DEFINE(HAVE_LIBXSS)],, $XEXT_LIBS $XLIBS))

    LDFLAGS="$_SAVE_LDFLAGS"
    LIBS="$_SAVE_LIBS"
fi # $MOZ_X11

AC_SUBST_LIST(XCFLAGS)
AC_SUBST_LIST(XLDFLAGS)
AC_SUBST_LIST(XLIBS)
AC_SUBST_LIST(XEXT_LIBS)
AC_SUBST_LIST(XT_LIBS)
AC_SUBST_LIST(XSS_LIBS)

dnl ========================================================
dnl = pthread support
dnl = Start by checking whether the system support pthreads
dnl ========================================================
case "$target_os" in
darwin*)
    MOZ_USE_PTHREADS=1
    ;;
*)
    AC_CHECK_LIB(pthreads, pthread_create,
        MOZ_USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lpthreads",
        AC_CHECK_LIB(pthread, pthread_create,
            MOZ_USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lpthread",
            AC_CHECK_LIB(c_r, pthread_create,
                MOZ_USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lc_r",
                AC_CHECK_LIB(c, pthread_create,
                    MOZ_USE_PTHREADS=1
                )
            )
        )
    )
    ;;
esac

dnl ========================================================
dnl Check the command line for --with-pthreads
dnl ========================================================
MOZ_ARG_WITH_BOOL(pthreads,
[  --with-pthreads         Force use of system pthread library with NSPR ],
[ if test "$MOZ_USE_PTHREADS"x = x; then
    AC_MSG_ERROR([ --with-pthreads specified for a system without pthread support ]);
fi],
    MOZ_USE_PTHREADS=
    _PTHREAD_LDFLAGS=
)

dnl ========================================================
dnl Do the platform specific pthread hackery
dnl ========================================================
if test "$MOZ_USE_PTHREADS"x != x
then
    dnl
    dnl See if -pthread is supported.
    dnl
    rm -f conftest*
    ac_cv_have_dash_pthread=no
    AC_MSG_CHECKING(whether ${CC-cc} accepts -pthread)
    echo 'int main() { return 0; }' | cat > conftest.c
    ${CC-cc} -pthread -o conftest conftest.c > conftest.out 2>&1
    if test $? -eq 0; then
        if test -z "`egrep -i '(unrecognize|unknown)' conftest.out | grep pthread`" -a -z "`egrep -i '(error|incorrect)' conftest.out`" ; then
            ac_cv_have_dash_pthread=yes
            case "$target_os" in
            freebsd*)
# Freebsd doesn't use -pthread for compiles, it uses them for linking
                ;;
            *)
                CFLAGS="$CFLAGS -pthread"
                CXXFLAGS="$CXXFLAGS -pthread"
                ;;
            esac
        fi
    fi
    rm -f conftest*
    AC_MSG_RESULT($ac_cv_have_dash_pthread)

    dnl
    dnl See if -pthreads is supported.
    dnl
    ac_cv_have_dash_pthreads=no
    if test "$ac_cv_have_dash_pthread" = "no"; then
        AC_MSG_CHECKING(whether ${CC-cc} accepts -pthreads)
        echo 'int main() { return 0; }' | cat > conftest.c
        ${CC-cc} -pthreads -o conftest conftest.c > conftest.out 2>&1
        if test $? -eq 0; then
            if test -z "`egrep -i '(unrecognize|unknown)' conftest.out | grep pthreads`" -a -z "`egrep -i '(error|incorrect)' conftest.out`" ; then
                ac_cv_have_dash_pthreads=yes
                CFLAGS="$CFLAGS -pthreads"
                CXXFLAGS="$CXXFLAGS -pthreads"
            fi
        fi
        rm -f conftest*
        AC_MSG_RESULT($ac_cv_have_dash_pthreads)
    fi

    case "$target" in
        *-*-freebsd*)
            AC_DEFINE(_REENTRANT)
            AC_DEFINE(_THREAD_SAFE)
            dnl -pthread links in -lpthread, so don't specify it explicitly.
            if test "$ac_cv_have_dash_pthread" = "yes"; then
                _PTHREAD_LDFLAGS="-pthread"
            fi
            ;;

        *-*-openbsd*|*-*-bsdi*)
            AC_DEFINE(_REENTRANT)
            AC_DEFINE(_THREAD_SAFE)
            dnl -pthread links in -lc_r, so don't specify it explicitly.
            if test "$ac_cv_have_dash_pthread" = "yes"; then
                _PTHREAD_LDFLAGS="-pthread"
            fi
            ;;

        *-*-linux*|*-*-kfreebsd*-gnu|*-*-gnu*)
            AC_DEFINE(_REENTRANT)
            ;;

    esac
    LDFLAGS="${_PTHREAD_LDFLAGS} ${LDFLAGS}"
    AC_SUBST(MOZ_USE_PTHREADS)
    MOZ_CHECK_HEADERS(pthread.h)
fi


dnl Checks for library functions.
dnl ========================================================
AC_PROG_GCC_TRADITIONAL
AC_FUNC_MEMCMP
AC_CHECK_FUNCS(stat64 lstat64 truncate64 statvfs64 statvfs statfs64 statfs getpagesize gmtime_r localtime_r arc4random arc4random_buf mallinfo gettid lchown setpriority strerror syscall)

dnl check for clock_gettime(), the CLOCK_MONOTONIC clock
dnl avoid this on Darwin, since depending on your system config, we may think
dnl it exists but it really doesn't
case "$OS_TARGET" in
Darwin)
  ;;
*)
  AC_CACHE_CHECK(for clock_gettime(CLOCK_MONOTONIC),
                 ac_cv_clock_monotonic,
                 [for libs in "" -lrt; do
                      _SAVE_LIBS="$LIBS"
                      LIBS="$LIBS $libs"
                      AC_TRY_LINK([#include <time.h>],
                                   [ struct timespec ts;
                                     clock_gettime(CLOCK_MONOTONIC, &ts); ],
                                   ac_cv_clock_monotonic=$libs
                                   LIBS="$_SAVE_LIBS"
                                   break,
                                   ac_cv_clock_monotonic=no)
                      LIBS="$_SAVE_LIBS"
                  done])
  if test "$ac_cv_clock_monotonic" != "no"; then
      HAVE_CLOCK_MONOTONIC=1
      REALTIME_LIBS=$ac_cv_clock_monotonic
      AC_DEFINE(HAVE_CLOCK_MONOTONIC)
      AC_SUBST(HAVE_CLOCK_MONOTONIC)
      AC_SUBST_LIST(REALTIME_LIBS)
  fi
  ;;
esac

AC_CACHE_CHECK(for pthread_cond_timedwait_monotonic_np,
               ac_cv_pthread_cond_timedwait_monotonic_np,
               AC_TRY_LINK([#include <pthread.h>],
                           [pthread_cond_timedwait_monotonic_np(0, 0, 0);],
                           ac_cv_pthread_cond_timewait_monotonic_np=yes,
                           ac_cv_pthread_cond_timewait_monotonic_np=no))
if test "$ac_cv_pthread_cond_timewait_monotonic_np" != "no"; then
    AC_DEFINE(HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC)
fi

dnl check for wcrtomb/mbrtowc
dnl =======================================================================
if test -z "$MACOS_DEPLOYMENT_TARGET" || test "$MACOS_DEPLOYMENT_TARGET" -ge "100300"; then
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_CACHE_CHECK(for wcrtomb,
    ac_cv_have_wcrtomb,
    [AC_TRY_LINK([#include <wchar.h>],
                 [mbstate_t ps={0};wcrtomb(0,'f',&ps);],
                 ac_cv_have_wcrtomb="yes",
                 ac_cv_have_wcrtomb="no")])
if test "$ac_cv_have_wcrtomb" = "yes"; then
    AC_DEFINE(HAVE_WCRTOMB)
fi
AC_CACHE_CHECK(for mbrtowc,
    ac_cv_have_mbrtowc,
    [AC_TRY_LINK([#include <wchar.h>],
                 [mbstate_t ps={0};mbrtowc(0,0,0,&ps);],
                 ac_cv_have_mbrtowc="yes",
                 ac_cv_have_mbrtowc="no")])
if test "$ac_cv_have_mbrtowc" = "yes"; then
    AC_DEFINE(HAVE_MBRTOWC)
fi
AC_LANG_RESTORE
fi

AC_CACHE_CHECK(
    [for res_ninit()],
    ac_cv_func_res_ninit,
    [if test "$OS_TARGET" = NetBSD -o "$OS_TARGET" = OpenBSD; then
        dnl no need for res_ninit() on NetBSD and OpenBSD
        ac_cv_func_res_ninit=no
     else
        AC_TRY_LINK([
            #ifdef linux
            #define _BSD_SOURCE 1
            #endif
            #include <sys/types.h>
            #include <netinet/in.h>
            #include <arpa/nameser.h>
            #include <resolv.h>
            ],
            [int foo = res_ninit(&_res);],
            [ac_cv_func_res_ninit=yes],
            [ac_cv_func_res_ninit=no])
     fi
    ])

if test "$ac_cv_func_res_ninit" = "yes"; then
    AC_DEFINE(HAVE_RES_NINIT)
dnl must add the link line we do something as foolish as this... dougt
dnl else
dnl    AC_CHECK_LIB(bind, res_ninit, AC_DEFINE(HAVE_RES_NINIT),
dnl        AC_CHECK_LIB(resolv, res_ninit, AC_DEFINE(HAVE_RES_NINIT)))
fi

AC_LANG_CPLUSPLUS

ICONV_LIBS=

case $target_os in
    darwin*|mingw*)
        ;;
    *)

AC_CHECK_LIB(c, iconv, [ICONV_LIBS=],
    AC_CHECK_LIB(iconv, iconv, [ICONV_LIBS="-liconv"],
        AC_CHECK_LIB(iconv, libiconv, [ICONV_LIBS="-liconv"])))
_SAVE_LIBS=$LIBS
LIBS="$LIBS $ICONV_LIBS"
AC_CACHE_CHECK(
    [for iconv()],
    ac_cv_func_iconv,
    [AC_TRY_LINK([
        #include <stdlib.h>
        #include <iconv.h>
        ],
        [
            iconv_t h = iconv_open("", "");
            iconv(h, NULL, NULL, NULL, NULL);
            iconv_close(h);
        ],
        [ac_cv_func_iconv=yes],
        [ac_cv_func_iconv=no]
        )]
    )
if test "$ac_cv_func_iconv" = "yes"; then
    AC_DEFINE(HAVE_ICONV)
    LIBICONV="$ICONV_LIBS"
    AC_CACHE_CHECK(
        [for iconv() with const input],
        ac_cv_func_const_iconv,
        [AC_TRY_COMPILE([
            #include <stdlib.h>
            #include <iconv.h>
            ],
            [
                const char *input = "testing";
                iconv_t h = iconv_open("", "");
                iconv(h, &input, NULL, NULL, NULL);
                iconv_close(h);
            ],
            [ac_cv_func_const_iconv=yes],
            [ac_cv_func_const_iconv=no]
            )]
        )
    if test "$ac_cv_func_const_iconv" = "yes"; then
        AC_DEFINE(HAVE_ICONV_WITH_CONST_INPUT)
    fi
fi
LIBS=$_SAVE_LIBS

    ;;
esac

AC_SUBST_LIST(ICONV_LIBS)

AM_LANGINFO_CODESET

AC_LANG_C

dnl **********************
dnl *** va_copy checks ***
AC_CACHE_CHECK([for an implementation of va_copy()],
               ac_cv_va_copy,
    [AC_TRY_COMPILE([#include <stdarg.h>
                     #include <stdlib.h>
        void f (int i, ...) {
            va_list args1, args2;
            va_start (args1, i);
            va_copy (args2, args1);
            if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
                exit (1);
            va_end (args1); va_end (args2);
        }],
        [f(0, 42); return 0],
        [ac_cv_va_copy=yes],
        [ac_cv_va_copy=no]
    )]
)
AC_CACHE_CHECK([whether va_list can be copied by value],
               ac_cv_va_val_copy,
    [AC_TRY_COMPILE([#include <stdarg.h>
                     #include <stdlib.h>
        void f (int i, ...) {
            va_list args1, args2;
            va_start (args1, i);
            args2 = args1;
            if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
                exit (1);
            va_end (args1); va_end (args2);
        }],
        [f(0, 42); return 0],
        [ac_cv_va_val_copy=yes],
        [ac_cv_va_val_copy=no],
    )]
)
if test "x$ac_cv_va_copy" = "xyes"; then
    AC_DEFINE(VA_COPY, va_copy)
    AC_DEFINE(HAVE_VA_COPY)
fi

if test "x$ac_cv_va_val_copy" = "xno"; then
   AC_DEFINE(HAVE_VA_LIST_AS_ARRAY)
fi

dnl ===================================================================
dnl ========================================================
dnl Put your C++ language/feature checks below
dnl ========================================================
AC_LANG_CPLUSPLUS

ARM_ABI_PREFIX=
if test "$GNU_CC"; then
  if test "$CPU_ARCH" = "arm" ; then
    AC_CACHE_CHECK(for ARM EABI,
        ac_cv_gcc_arm_eabi,
        [AC_TRY_COMPILE([],
                        [
#if defined(__ARM_EABI__)
  return 0;
#else
#error Not ARM EABI.
#endif
                        ],
                        ac_cv_gcc_arm_eabi="yes",
                        ac_cv_gcc_arm_eabi="no")])
    if test "$ac_cv_gcc_arm_eabi" = "yes"; then
        HAVE_ARM_EABI=1
        ARM_ABI_PREFIX=eabi-
    else
        ARM_ABI_PREFIX=oabi-
    fi
  fi

  TARGET_COMPILER_ABI="${TARGET_COMPILER_ABI-${ARM_ABI_PREFIX}gcc3}"
fi

dnl Check to see if we can resolve ambiguity with |using|.
AC_CACHE_CHECK(whether the C++ \"using\" keyword resolves ambiguity,
               ac_cv_cpp_ambiguity_resolving_using,
               [AC_TRY_COMPILE(class X {
                                 public: int go(const X&) {return 3;}
                                         int jo(const X&) {return 3;}
                               };
                               class Y : public X {
                                 public:  int go(int) {return 2;}
                                          int jo(int) {return 2;}
                                          using X::jo;
                                 private: using X::go;
                               };,
                               X x; Y y; y.jo(x);,
                               ac_cv_cpp_ambiguity_resolving_using=yes,
                               ac_cv_cpp_ambiguity_resolving_using=no)])
if test "$ac_cv_cpp_ambiguity_resolving_using" = yes ; then
   AC_DEFINE(HAVE_CPP_AMBIGUITY_RESOLVING_USING)
fi

dnl See if a dynamic_cast to void* gives the most derived object.
AC_CACHE_CHECK(for C++ dynamic_cast to void*,
               ac_cv_cpp_dynamic_cast_void_ptr,
               [AC_TRY_RUN([class X { int i; public: virtual ~X() { } };
                            class Y { int j; public: virtual ~Y() { } };
                            class Z : public X, public Y { int k; };

                            int main() {
                                 Z mdo;
                                 X *subx = (X*)&mdo;
                                 Y *suby = (Y*)&mdo;
                                 return !((((void*)&mdo != (void*)subx) &&
                                           ((void*)&mdo == dynamic_cast<void*>(subx))) ||
                                          (((void*)&mdo != (void*)suby) &&
                                           ((void*)&mdo == dynamic_cast<void*>(suby))));
                            }],
                           ac_cv_cpp_dynamic_cast_void_ptr=yes,
                           ac_cv_cpp_dynamic_cast_void_ptr=no,
                           ac_cv_cpp_dynamic_cast_void_ptr=no)])
if test "$ac_cv_cpp_dynamic_cast_void_ptr" = yes ; then
   AC_DEFINE(HAVE_CPP_DYNAMIC_CAST_TO_VOID_PTR)
fi


# try harder, when checking for __thread support, see bug 521750 comment #33 and below
# We pass MOZ_OPTIMIZE_LDFLAGS to the linker because if dead_strip is
# enabled, the linker in xcode 4.1 will crash. Without this it would crash when
# linking XUL.
_SAVE_LDFLAGS=$LDFLAGS
LDFLAGS="$LDFLAGS $DSO_PIC_CFLAGS $DSO_LDOPTS $MOZ_OPTIMIZE_LDFLAGS"
AC_CACHE_CHECK(for __thread keyword for TLS variables,
               ac_cv_thread_keyword,
               [AC_TRY_LINK([__thread bool tlsIsMainThread = false;],
                            [return tlsIsMainThread;],
                            ac_cv_thread_keyword=yes,
                            ac_cv_thread_keyword=no)])
LDFLAGS=$_SAVE_LDFLAGS
# The custom dynamic linker doesn't support TLS variables
MOZ_TLS=
if test "$ac_cv_thread_keyword" = yes -a "$MOZ_LINKER" != 1; then
  # mips builds fail with TLS variables because of a binutils bug.
  # See bug 528687
  # OpenBSD doesn't have TLS support, and the test succeeds with clang++
  case "${target}" in
    mips*-*)
      :
      ;;
    *-openbsd*)
      :
      ;;
    *)
      AC_DEFINE(HAVE_THREAD_TLS_KEYWORD)
      MOZ_TLS=1
      ;;
  esac
fi

dnl Using the custom linker on ARMv6 requires 16k alignment of ELF segments.
if test -n "$MOZ_LINKER"; then
  if test "$CPU_ARCH" = arm; then
    dnl When building for < ARMv7, we need to ensure 16k alignment of ELF segments
    if test -n "$ARM_ARCH" && test "$ARM_ARCH" -lt 7; then
      LDFLAGS="$LDFLAGS -Wl,-z,max-page-size=0x4000 -Wl,-z,common-page-size=0x4000"
      _SUBDIR_LDFLAGS="$_SUBDIR_LDFLAGS -Wl,-z,max-page-size=0x4000 -Wl,-z,common-page-size=0x4000"
    fi
  fi

dnl gold emits wrong sysv-style elf hash tables when building both sysv and
dnl style tables. https://sourceware.org/bugzilla/show_bug.cgi?id=13597
dnl Since the linker only understands the sysv ones, no need to build the
dnl gnu style tables anyways.
  LDFLAGS="$LDFLAGS -Wl,--hash-style=sysv"
fi

dnl See if compiler supports some gcc-style attributes

AC_CACHE_CHECK(for __attribute__((always_inline)),
               ac_cv_attribute_always_inline,
               [AC_TRY_COMPILE([inline void f(void) __attribute__((always_inline));],
                               [],
                               ac_cv_attribute_always_inline=yes,
                               ac_cv_attribute_always_inline=no)])

dnl End of C++ language/feature checks
AC_LANG_C

dnl ========================================================
dnl =  Internationalization checks
dnl ========================================================
dnl
dnl Internationalization and Locale support is different
dnl on various UNIX platforms.  Checks for specific i18n
dnl features go here.

dnl check for LC_MESSAGES
AC_CACHE_CHECK(for LC_MESSAGES,
               ac_cv_i18n_lc_messages,
               [AC_TRY_COMPILE([#include <locale.h>],
                               [int category = LC_MESSAGES;],
                               ac_cv_i18n_lc_messages=yes,
                               ac_cv_i18n_lc_messages=no)])
if test "$ac_cv_i18n_lc_messages" = yes; then
   AC_DEFINE(HAVE_I18N_LC_MESSAGES)
fi

AC_HAVE_FUNCS(localeconv)

fi # ! SKIP_COMPILER_CHECKS

if test -n "${COMPILE_ENVIRONMENT}"; then
  MOZ_CHECK_ALLOCATOR
fi

TARGET_XPCOM_ABI=
if test -n "${CPU_ARCH}" -a -n "${TARGET_COMPILER_ABI}"; then
    TARGET_XPCOM_ABI="${CPU_ARCH}-${TARGET_COMPILER_ABI}"
    AC_DEFINE_UNQUOTED(TARGET_XPCOM_ABI, ["${TARGET_XPCOM_ABI}"])
fi

dnl We can't run TRY_COMPILE tests on Windows, so hard-code some
dnl features that Windows actually does support.

if test -n "$SKIP_COMPILER_CHECKS"; then
   dnl Windows has malloc.h
   AC_DEFINE(MALLOC_H, [<malloc.h>])
   AC_DEFINE(HAVE_FORCEINLINE)
   AC_DEFINE(HAVE_LOCALECONV)
fi # SKIP_COMPILER_CHECKS

dnl Mozilla specific options
dnl ========================================================
dnl The macros used for command line options
dnl are defined in build/autoconf/altoptions.m4.

dnl ========================================================
dnl =
dnl = Check for external package dependencies
dnl =
dnl ========================================================
MOZ_ARG_HEADER(External Packages)

case "$OS_TARGET" in
WINNT|Darwin)
  MOZ_FOLD_LIBS=1
  ;;
*)
  MOZ_FOLD_LIBS=
  ;;
esac

MOZ_CONFIG_NSPR()

# TODO: We need to find a better place to define this include
NSS_CFLAGS="-I${DIST}/include/nss"
AC_SUBST(NSS_CFLAGS)

if test -z "$SKIP_LIBRARY_CHECKS"; then
dnl system JPEG support
dnl ========================================================
MOZ_ARG_WITH_STRING(system-jpeg,
[  --with-system-jpeg[=PFX]
                          Use system libjpeg [installed at prefix PFX]],
    JPEG_DIR=$withval)

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
if test -n "${JPEG_DIR}" -a "${JPEG_DIR}" != "yes"; then
    CFLAGS="-I${JPEG_DIR}/include $CFLAGS"
    LDFLAGS="-L${JPEG_DIR}/lib $LDFLAGS"
fi
if test -z "$JPEG_DIR" -o "$JPEG_DIR" = no; then
    MOZ_SYSTEM_JPEG=
else
    AC_CHECK_LIB(jpeg, jpeg_destroy_compress, [MOZ_SYSTEM_JPEG=1 MOZ_JPEG_LIBS="-ljpeg"], MOZ_SYSTEM_JPEG=)
fi

if test "$MOZ_SYSTEM_JPEG" = 1; then
    AC_TRY_COMPILE([ #include <stdio.h>
                     #include <sys/types.h>
                     #include <jpeglib.h> ],
                   [ #if JPEG_LIB_VERSION < $MOZJPEG
                     #error "Insufficient JPEG library version ($MOZJPEG required)."
                     #endif
                     #ifndef JCS_EXTENSIONS
                     #error "libjpeg-turbo JCS_EXTENSIONS required"
                     #endif
                     ],
                   MOZ_SYSTEM_JPEG=1,
                   AC_MSG_ERROR([Insufficient JPEG library version for --with-system-jpeg]))
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

if test -n "${JPEG_DIR}" -a -d "${JPEG_DIR}" -a "$MOZ_SYSTEM_JPEG" = 1; then
    MOZ_JPEG_CFLAGS="-I${JPEG_DIR}/include"
    MOZ_JPEG_LIBS="-L${JPEG_DIR}/lib ${MOZ_JPEG_LIBS}"
fi
fi # SKIP_LIBRARY_CHECKS

dnl system ZLIB support
dnl ========================================================
MOZ_ZLIB_CHECK([1.2.3])

if test "$MOZ_LINKER" = 1 -a "$MOZ_SYSTEM_ZLIB" != 1; then
    AC_MSG_ERROR([Custom dynamic linker requires --with-system-zlib])
fi

if test -z "$SKIP_LIBRARY_CHECKS"; then
dnl system BZIP2 Support
dnl ========================================================
MOZ_ARG_WITH_STRING(system-bz2,
[  --with-system-bz2[=PFX]
                          Use system libbz2 [installed at prefix PFX]],
    BZ2_DIR=$withval)

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
if test -n "${BZ2_DIR}" -a "${BZ2_DIR}" != "yes"; then
    CFLAGS="-I${BZ2_DIR}/include $CFLAGS"
    LDFLAGS="-L${BZ2_DIR}/lib $LDFLAGS"
fi
if test -z "$BZ2_DIR" -o "$BZ2_DIR" = no; then
    MOZ_SYSTEM_BZ2=
else
    AC_CHECK_LIB(bz2, BZ2_bzread, [MOZ_SYSTEM_BZ2=1 MOZ_BZ2_LIBS="-lbz2"],
    [MOZ_SYSTEM_BZ2= MOZ_BZ2_CFLAGS= MOZ_BZ2_LIBS=])
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

if test "${BZ2_DIR}" -a -d "${BZ2_DIR}" -a "$MOZ_SYSTEM_BZ2" = 1; then
    MOZ_BZ2_CFLAGS="-I${BZ2_DIR}/include"
    MOZ_BZ2_LIBS="-L${BZ2_DIR}/lib ${MOZ_BZ2_LIBS}"
fi

fi # SKIP_LIBRARY_CHECKS

dnl ========================================================
dnl =
dnl = Application
dnl =
dnl ========================================================

MOZ_ARG_HEADER(Application)

ENABLE_TESTS=
ENABLE_SYSTEM_EXTENSION_DIRS=1
MOZ_BRANDING_DIRECTORY=
MOZ_OFFICIAL_BRANDING=
MC_OFFICIAL=
MOZ_FEEDS=1
MOZ_AUTH_EXTENSION=1
MOZ_RAW=
MOZ_AV1=
MOZ_JXL=
MOZ_VORBIS=
MOZ_TREMOR=
MOZ_SAMPLE_TYPE_FLOAT32=
MOZ_SAMPLE_TYPE_S16=
MOZ_GMP=
MOZ_WEBRTC=
MOZ_PEERCONNECTION=
MOZ_SRTP=
MOZ_WEBRTC_SIGNALING=
MOZ_WEBRTC_ASSERT_ALWAYS=1
MOZ_WEBRTC_HARDWARE_AEC_NS=
MOZ_SCTP=
MOZ_VPX_ERROR_CONCEALMENT=
VPX_USE_YASM=
VPX_ASFLAGS=
VPX_AS_CONVERSION=
VPX_X86_ASM=
VPX_ARM_ASM=
LIBJPEG_TURBO_AS=
LIBJPEG_TURBO_ASFLAGS=
MOZ_GAMEPAD=
MOZ_PREF_EXTENSIONS=1
MOZ_REFLOW_PERF=
MOZ_SPELLCHECK=1
MOZ_TOOLKIT_SEARCH=1
MOZ_UI_LOCALE=en-US
MOZ_UNIVERSALCHARDET=1
MOZ_ZIPWRITER=1
MOZ_NO_SMART_CARDS=
MOZ_NECKO_WIFI=1
NECKO_COOKIES=1
MOZ_USE_NATIVE_POPUP_WINDOWS=
MOZ_EXCLUDE_HYPHENATION_DICTIONARIES=
ACCESSIBILITY=1
MOZ_TIME_MANAGER=
MOZ_AUDIO_CHANNEL_MANAGER=
MOZ_JETPACK=1
MOZ_DEVTOOLS_SERVER=1
MOZ_DEVTOOLS=
MOZ_PLACES=1
MOZ_SECURITY_SQLSTORE=
MOZ_SERVICES_SYNC=1
MOZ_USERINFO=1
NSS_DISABLE_DBM=
MOZ_MAILNEWS=
MOZ_MAILNEWS_OAUTH2=
MOZ_LDAP_XPCOM=
MOZ_MORK=
MOZ_MAPI_SUPPORT=
MOZ_INCOMPLETE_EXTERNAL_LINKAGE=
MOZ_CAN_DRAW_IN_TITLEBAR=

case "$target_os" in
    mingw*)
        NS_ENABLE_TSF=1
        AC_DEFINE(NS_ENABLE_TSF)
        ;;
esac

dnl ========================================================
dnl = Vendor override
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(official-vendor,
[  --enable-official-vendor   This is an official release build.],
    MC_OFFICIAL=1,
    MC_OFFICIAL=)


dnl ========================================================
dnl = Trademarked Branding
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(official-branding,
[  --enable-official-branding
                          Enable Official Branding
                          Do not distribute builds with
                          --enable-official-branding unless you have
                          permission to use our trademarks!],
    MOZ_OFFICIAL_BRANDING=1,
    MOZ_OFFICIAL_BRANDING=)

# Allow the application to influence configure with a confvars.sh script.
AC_MSG_CHECKING([if app-specific confvars.sh exists])
if test -f "${srcdir}/${MOZ_BUILD_APP}/confvars.sh" ; then
  AC_MSG_RESULT([${srcdir}/${MOZ_BUILD_APP}/confvars.sh])
  . "${srcdir}/${MOZ_BUILD_APP}/confvars.sh"
else
  AC_MSG_RESULT([no])
fi

# Allow someone to change MOZ_APP_NAME and MOZ_APP_BASENAME in mozconfig
MOZ_ARG_WITH_STRING(app-name,
[--with-app-name=APPNAME sets MOZ_APP_NAME to APPNAME],
WITH_APP_NAME=$withval,
)

if test -n "$WITH_APP_NAME" ; then
    MOZ_APP_NAME="$WITH_APP_NAME"
fi

MOZ_ARG_WITH_STRING(app-basename,
[--with-app-basename=BASENAME sets MOZ_APP_BASENAME to BASENAME],
WITH_APP_BASENAME=$withval,
)

if test -n "$WITH_APP_BASENAME" ; then
    MOZ_APP_BASENAME="$WITH_APP_BASENAME"
fi

dnl ========================================================
dnl =
dnl = Toolkit Options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Toolkit Options)

dnl ========================================================
dnl = Enable the toolkit as needed                         =
dnl ========================================================

case "$MOZ_WIDGET_TOOLKIT" in

cocoa)
    LDFLAGS="$LDFLAGS -framework Cocoa -lobjc"
    # Use -Wl as a trick to avoid -framework and framework names from
    # being separated by AC_SUBST_LIST.
    TK_LIBS='-Wl,-framework,CoreLocation -Wl,-framework,QuartzCore -Wl,-framework,Carbon -Wl,-framework,CoreAudio -Wl,-framework,AudioToolbox -Wl,-framework,AudioUnit -Wl,-framework,AddressBook -Wl,-framework,OpenGL -Wl,-framework,Security -Wl,-framework,ServiceManagement'
    TK_CFLAGS=""
    CFLAGS="$CFLAGS $TK_CFLAGS"
    CXXFLAGS="$CXXFLAGS $TK_CFLAGS"
    MOZ_USER_DIR="Mozilla"
    MOZ_FS_LAYOUT=bundle
    ;;

uikit)
    LDFLAGS="$LDFLAGS -framework UIKit -lobjc"
    TK_CFLAGS=""
    TK_LIBS='-Wl,-framework,Foundation -Wl,-framework,CoreFoundation -Wl,-framework,CoreGraphics -Wl,-framework,CoreText -Wl,-framework,AVFoundation -Wl,-framework,AudioToolbox -Wl,-framework,CoreMedia -Wl,-framework,CoreVideo -Wl,-framework,OpenGLES -Wl,-framework,QuartzCore'
    CFLAGS="$CFLAGS $TK_CFLAGS"
    CXXFLAGS="$CXXFLAGS $TK_CFLAGS"
    MOZ_USER_DIR="Mozilla"
    MOZ_FS_LAYOUT=bundle
    ;;

esac

dnl there are a lot of tests on MOZ_ENABLE_GTK below, that are more convenient
dnl to keep that way than testing against MOZ_WIDGET_TOOLKIT
case "$MOZ_WIDGET_TOOLKIT" in
gtk*)
    MOZ_ENABLE_GTK=1
    ;;
esac

if test "$COMPILE_ENVIRONMENT"; then
  if test "$MOZ_WIDGET_TOOLKIT" = gtk3; then
    PKG_CHECK_MODULES(MOZ_GTK3, gtk+-3.0 >= $GTK3_VERSION gtk+-unix-print-3.0 glib-2.0 gobject-2.0 $GDK_PACKAGES)
    MOZ_GTK3_CFLAGS="-I${_topsrcdir}/widget/gtk/compat-gtk3 $MOZ_GTK3_CFLAGS"
    TK_CFLAGS=$MOZ_GTK3_CFLAGS
    TK_LIBS=$MOZ_GTK3_LIBS
    dnl GDK_VERSION_MIN_REQUIRED is not set here as GDK3 deprecated warnings
    dnl are suppressed by widget/gtk/compat-gtk3/gdk/gdkversionmacros.h.
    AC_DEFINE_UNQUOTED(GDK_VERSION_MAX_ALLOWED,$GDK_VERSION_MAX_ALLOWED)
    GLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_32
  fi
  if test "$MOZ_WIDGET_TOOLKIT" = gtk2; then
    GLIB_VERSION_MAX_ALLOWED=$GLIB_VERSION_MIN_REQUIRED
  fi
  if test "$MOZ_ENABLE_GTK"; then
    if test "$MOZ_X11"; then
      GDK_PACKAGES=gdk-x11-2.0
    fi
    AC_DEFINE_UNQUOTED(GLIB_VERSION_MIN_REQUIRED,$GLIB_VERSION_MIN_REQUIRED)
    AC_DEFINE_UNQUOTED(GLIB_VERSION_MAX_ALLOWED,$GLIB_VERSION_MAX_ALLOWED)

    PKG_CHECK_MODULES(MOZ_GTK2, gtk+-2.0 >= $GTK2_VERSION gtk+-unix-print-2.0 glib-2.0 >= $GLIB_VERSION gobject-2.0 $GDK_PACKAGES)
    MOZ_GTK2_CFLAGS="-I${_topsrcdir}/widget/gtk/compat $MOZ_GTK2_CFLAGS"
  fi
  if test "$MOZ_WIDGET_TOOLKIT" = gtk2; then
    TK_CFLAGS=$MOZ_GTK2_CFLAGS
    TK_LIBS=$MOZ_GTK2_LIBS
  fi
fi # COMPILE_ENVIRONMENT

AC_SUBST(MOZ_FS_LAYOUT)

dnl ========================================================
dnl = startup-notification support module
dnl ========================================================

if test "$MOZ_ENABLE_GTK"
then
    MOZ_ENABLE_STARTUP_NOTIFICATION=

    MOZ_ARG_ENABLE_BOOL(startup-notification,
    [  --enable-startup-notification
                          Enable startup-notification support (default: disabled) ],
        MOZ_ENABLE_STARTUP_NOTIFICATION=force,
        MOZ_ENABLE_STARTUP_NOTIFICATION=)
    if test "$MOZ_ENABLE_STARTUP_NOTIFICATION"
    then
        PKG_CHECK_MODULES(MOZ_STARTUP_NOTIFICATION,
                          libstartup-notification-1.0 >= $STARTUP_NOTIFICATION_VERSION,
        [MOZ_ENABLE_STARTUP_NOTIFICATION=1], [
            if test "$MOZ_ENABLE_STARTUP_NOTIFICATION" = "force"
            then
                AC_MSG_ERROR([* * * Could not find startup-notification >= $STARTUP_NOTIFICATION_VERSION])
            fi
            MOZ_ENABLE_STARTUP_NOTIFICATION=
        ])
    fi

    if test "$MOZ_ENABLE_STARTUP_NOTIFICATION"; then
        AC_DEFINE(MOZ_ENABLE_STARTUP_NOTIFICATION)
    fi

    TK_LIBS="$TK_LIBS $MOZ_STARTUP_NOTIFICATION_LIBS"
fi
AC_SUBST(MOZ_ENABLE_STARTUP_NOTIFICATION)

AC_SUBST_LIST(TK_CFLAGS)
AC_SUBST_LIST(TK_LIBS)

AC_SUBST(MOC)
AC_SUBST(RCC)

dnl ========================================================
dnl =
dnl = Components & Features
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Components and Features)

dnl ========================================================
dnl = Localization
dnl ========================================================
MOZ_ARG_ENABLE_STRING(ui-locale,
[  --enable-ui-locale=ab-CD
                          Select the user interface locale (default: en-US)],
    MOZ_UI_LOCALE=$enableval )
AC_SUBST(MOZ_UI_LOCALE)

AC_SUBST(MOZ_OFFICIAL_BRANDING)
if test -n "$MOZ_OFFICIAL_BRANDING"; then
  if test -z "$MOZ_OFFICIAL_BRANDING_DIRECTORY"; then
    AC_MSG_ERROR([You must specify MOZ_OFFICIAL_BRANDING_DIRECTORY to use --enable-official-branding.])
  else
    MOZ_BRANDING_DIRECTORY=${MOZ_OFFICIAL_BRANDING_DIRECTORY}
    AC_DEFINE(MOZ_OFFICIAL_BRANDING)
dnl Using official branding implies an official release build.
    MC_OFFICIAL=1
  fi
fi

AC_SUBST(MC_OFFICIAL)
if test -n "$MC_OFFICIAL"; then
  AC_DEFINE(MC_OFFICIAL)
fi

MOZ_ARG_WITH_STRING(branding,
[  --with-branding=dir     Use branding from the specified directory.],
    MOZ_BRANDING_DIRECTORY=$withval)

REAL_BRANDING_DIRECTORY="${MOZ_BRANDING_DIRECTORY}"
if test -z "$REAL_BRANDING_DIRECTORY"; then
  REAL_BRANDING_DIRECTORY=${MOZ_BUILD_APP}/branding/nightly
fi

if test -f "${_topsrcdir}/$REAL_BRANDING_DIRECTORY/configure.sh"; then
  . "${_topsrcdir}/$REAL_BRANDING_DIRECTORY/configure.sh"
elif test -f "${EXTERNAL_SOURCE_DIR}/$REAL_BRANDING_DIRECTORY/configure.sh"; then
  . "${EXTERNAL_SOURCE_DIR}/$REAL_BRANDING_DIRECTORY/configure.sh"
fi

AC_SUBST(MOZ_BRANDING_DIRECTORY)

dnl ========================================================
dnl = Private Build
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(private-build,
[  --enable-private-build   Enable private builds
                            This allows you to build with official
                            branding for personal use only using any
                            build time configuration.],
    MC_PRIVATE_BUILD=1,
    MC_PRIVATE_BUILD=)

AC_SUBST(MC_PRIVATE_BUILD)
if test -n "$MC_PRIVATE_BUILD"; then
  AC_DEFINE(MC_PRIVATE_BUILD)
fi

dnl ========================================================
dnl = Distribution ID
dnl ========================================================
MOZ_ARG_WITH_STRING(distribution-id,
[  --with-distribution-id=ID
                          Set distribution-specific id (default=org.mozilla)],
[ val=`echo $withval`
    MOZ_DISTRIBUTION_ID="$val"])

if test -z "$MOZ_DISTRIBUTION_ID"; then
   MOZ_DISTRIBUTION_ID="org.mozilla"
fi

AC_DEFINE_UNQUOTED(MOZ_DISTRIBUTION_ID,"$MOZ_DISTRIBUTION_ID")
AC_SUBST(MOZ_DISTRIBUTION_ID)

dnl ========================================================
dnl = GIO and GConf support module
dnl ========================================================

if test "$MOZ_X11"
then
    dnl build the GIO extension by default only when the
    dnl GTK2 toolkit is in use.
    if test "$MOZ_ENABLE_GTK"
    then
        MOZ_ENABLE_GIO=1
        MOZ_ENABLE_GCONF=1
    fi

    dnl ========================================================
    dnl = GIO support module
    dnl ========================================================
    MOZ_ARG_DISABLE_BOOL(gio,
    [  --disable-gio           Disable GIO support],
        MOZ_ENABLE_GIO=,
        MOZ_ENABLE_GIO=force)

    if test "$MOZ_ENABLE_GIO" -a "$MOZ_ENABLE_GTK"
    then
        if test "$MOZ_WIDGET_TOOLKIT" = gtk2
        then
            PKG_CHECK_MODULES(_GTKCHECK, gtk+-2.0 >= 2.14, ,
                              [AC_MSG_ERROR([* * * Could not find gtk+-2.0 > 2.14. Required for build with gio.])])
        fi
        PKG_CHECK_MODULES(MOZ_GIO, gio-2.0 >= $GIO_VERSION,[
            MOZ_GIO_LIBS=`echo $MOZ_GIO_LIBS | sed 's/-llinc\>//'`
            MOZ_ENABLE_GIO=1
            AC_DEFINE(MOZ_ENABLE_GIO)
        ],[
            if test "$MOZ_ENABLE_GIO" = "force"
            then
                AC_MSG_ERROR([* * * Could not find gio-2.0 >= $GIO_VERSION])
            fi
            MOZ_ENABLE_GIO=
        ])
    fi

    AC_SUBST(MOZ_ENABLE_GIO)

    dnl ========================================================
    dnl = GConf support module
    dnl ========================================================
    MOZ_ARG_DISABLE_BOOL(gconf,
    [  --disable-gconf      Disable Gconf support ],
        MOZ_ENABLE_GCONF=,
        MOZ_ENABLE_GCONF=1)

    if test "$MOZ_ENABLE_GCONF"
    then
        PKG_CHECK_MODULES(MOZ_GCONF, gconf-2.0 >= $GCONF_VERSION gobject-2.0 ,[
            MOZ_GCONF_LIBS=`$PKG_CONFIG --libs gobject-2.0`
            MOZ_ENABLE_GCONF=1
        ],[
            if test -n "$MOZ_ENABLE_GCONF";
            then
                AC_MSG_ERROR([* * * Could not find gconf-2.0 ])
            else
                AC_MSG_WARN([Many automated tests will fail with --disable-gconf. See bug 1167201.])
            fi
        ])
    fi

    if test "$MOZ_ENABLE_GCONF"; then
        AC_DEFINE(MOZ_ENABLE_GCONF)
    fi

    AC_SUBST(MOZ_ENABLE_GCONF)
fi

dnl ========================================================
dnl = libproxy support
dnl ========================================================

if test "$MOZ_ENABLE_GTK"
then
    MOZ_ENABLE_LIBPROXY=

    MOZ_ARG_ENABLE_BOOL(libproxy,
    [  --enable-libproxy         Enable libproxy support ],
    MOZ_ENABLE_LIBPROXY=1,
    MOZ_ENABLE_LIBPROXY=)

    if test "$MOZ_ENABLE_LIBPROXY"
    then
        PKG_CHECK_MODULES(MOZ_LIBPROXY, libproxy-1.0)
        AC_DEFINE(MOZ_ENABLE_LIBPROXY)
    fi
fi
AC_SUBST(MOZ_ENABLE_LIBPROXY)

dnl ========================================================
dnl = libgnomeui support module
dnl ========================================================

if test "$MOZ_ENABLE_GTK"
then
    MOZ_ARG_ENABLE_BOOL(gnomeui,
    [  --enable-gnomeui        Enable libgnomeui instead of GIO & GTK for icon theme support ],
        MOZ_ENABLE_GNOMEUI=force,
        MOZ_ENABLE_GNOMEUI=)

    if test "$MOZ_ENABLE_GNOMEUI"
    then
        PKG_CHECK_MODULES(MOZ_GNOMEUI, libgnomeui-2.0 >= $GNOMEUI_VERSION,
        [
            MOZ_ENABLE_GNOMEUI=1
        ],[
            if test "$MOZ_ENABLE_GNOMEUI" = "force"
            then
                AC_MSG_ERROR([* * * Could not find libgnomeui-2.0 >= $GNOMEUI_VERSION])
            fi
            MOZ_ENABLE_GNOMEUI=
        ])
    fi

    if test "$MOZ_ENABLE_GNOMEUI"; then
        AC_DEFINE(MOZ_ENABLE_GNOMEUI)
    fi
fi

AC_SUBST(MOZ_ENABLE_GNOMEUI)

dnl ========================================================
dnl = dbus support
dnl ========================================================

if test "$MOZ_ENABLE_GTK"
then
    MOZ_ENABLE_DBUS=1

    MOZ_ARG_DISABLE_BOOL(dbus,
    [  --disable-dbus          Disable dbus support ],
        MOZ_ENABLE_DBUS=,
        MOZ_ENABLE_DBUS=1)

    if test "$MOZ_ENABLE_DBUS"
    then
        PKG_CHECK_MODULES(MOZ_DBUS, dbus-1 >= $DBUS_VERSION)
        PKG_CHECK_MODULES(MOZ_DBUS_GLIB, dbus-glib-1 >= $DBUS_VERSION)
        AC_DEFINE(MOZ_ENABLE_DBUS)
    fi
fi
AC_SUBST(MOZ_ENABLE_DBUS)

dnl =========================================================
dnl = Whether to exclude hyphenations files in the build
dnl =========================================================
if test -n "$MOZ_EXCLUDE_HYPHENATION_DICTIONARIES"; then
    AC_DEFINE(MOZ_EXCLUDE_HYPHENATION_DICTIONARIES)
fi

dnl ========================================================
dnl accessibility support on by default on all platforms
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(accessibility,
[  --disable-accessibility Disable accessibility support],
    ACCESSIBILITY=,
    ACCESSIBILITY=1 )
if test "$ACCESSIBILITY"; then
    case "$target" in
    *-mingw*)
        if test -z "$MIDL"; then
            if test "$GCC" != "yes"; then
                AC_MSG_ERROR([MIDL could not be found. Building accessibility without MIDL is not supported.])
            else
                AC_MSG_ERROR([You have accessibility enabled, but widl could not be found. Add --disable-accessibility to your mozconfig or install widl. See https://developer.mozilla.org/en-US/docs/Cross_Compile_Mozilla_for_Mingw32 for details.])
            fi
        fi
    esac
    AC_DEFINE(ACCESSIBILITY)
fi

dnl ========================================================
dnl Accessibility is required for the linuxgl widget
dnl backend
dnl ========================================================
if test "${MOZ_WIDGET_TOOLKIT}" = "linuxgl" -a "$ACCESSIBILITY" != "1"; then
    AC_MSG_ERROR(["Accessibility is required for the linuxgl widget backend"])
fi

dnl Turn off webrtc for OS's we don't handle yet, but allow
dnl --enable-webrtc to override.  Can disable for everything in
dnl the master list above.
if test -n "$MOZ_WEBRTC"; then
    case "$target" in
    *-linux*|*-mingw*|*-darwin*|*-dragonfly*|*-freebsd*|*-netbsd*|*-openbsd*)
        dnl Leave enabled
        ;;
    *)
        dnl default to disabled for all others
        MOZ_WEBRTC=
        ;;
    esac
fi

AC_TRY_COMPILE([#include <linux/ethtool.h>],
               [ struct ethtool_cmd cmd; cmd.speed_hi = 0; ],
               MOZ_WEBRTC_HAVE_ETHTOOL_SPEED_HI=1)

AC_SUBST(MOZ_WEBRTC_HAVE_ETHTOOL_SPEED_HI)

# target_arch is from {ia32|x64|arm|ppc}
case "$CPU_ARCH" in
x86_64 | arm | aarch64 | x86 | ppc* | ia64)
    :
    ;;
*)
# unsupported arch for webrtc
    MOZ_WEBRTC=
    ;;

esac

dnl =========================================================
dnl = NSS DBM (BerkeleyDB) Support
dnl = NOTE: Because we don't expressly control the name of
dnl = this var --disable-dbm means NSS_DISABLE_DBM=1
dnl =========================================================
MOZ_ARG_DISABLE_BOOL(dbm,
[  --disable-dbm         Disable DBM support in nss],
    NSS_DISABLE_DBM=1,
    NSS_DISABLE_DBM=)

if test -n "$NSS_DISABLE_DBM"; then
  AC_DEFINE(NSS_DISABLE_DBM)
fi

AC_SUBST(NSS_DISABLE_DBM)

dnl =========================================================
dnl = NSS SQL storage format
dnl =========================================================
MOZ_ARG_ENABLE_BOOL(security-sqlstore,
[  --enable-security-sqlstore Enable the use of SQL storage for NSS],
    MOZ_SECURITY_SQLSTORE=1,
    MOZ_SECURITY_SQLSTORE=)

if test -n "$NSS_DISABLE_DBM" -a -z "$MOZ_SECURITY_SQLSTORE"; then
  AC_MSG_ERROR([DBM storage support is required if not using NSS SQL storage])
fi

if test -n "$MOZ_SECURITY_SQLSTORE"; then
  AC_DEFINE(MOZ_SECURITY_SQLSTORE)
fi

AC_SUBST(MOZ_SECURITY_SQLSTORE)

dnl =========================================================
dnl = Don't fold mailnews related comps into libXUL
dnl =========================================================
MOZ_ARG_ENABLE_BOOL(incomplete-external-linkage,
[  --enable-incomplete-external-linkage Don't fold *comps into libXUL which is currently badly busted so don't even bother with it ],
    MOZ_INCOMPLETE_EXTERNAL_LINKAGE=1,
    MOZ_INCOMPLETE_EXTERNAL_LINKAGE= )

AC_SUBST(MOZ_INCOMPLETE_EXTERNAL_LINKAGE)

dnl ========================================================
dnl = Enable MailNews
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(mailnews,
[  --enable-mailnews          Enable the mailnews core backend],
    MOZ_MAILNEWS=1,
    MOZ_MAILNEWS=)

if test -n "$MOZ_MAILNEWS"; then
    MOZ_MORK=1
    MOZ_LDAP_XPCOM=1

    if test "$OS_ARCH" == "WINNT"; then
        MOZ_MAPI_SUPPORT=1
    else
      MOZ_MOVEMAIL=1
      HAVE_MOVEMAIL=1
      AC_DEFINE(HAVE_MOVEMAIL)
    fi

    AC_DEFINE(MOZ_MAILNEWS)
    AC_DEFINE(MOZ_MORK)
fi

AC_SUBST(MOZ_MAILNEWS)
AC_SUBST(MOZ_MORK)
AC_SUBST(MOZ_MOVEMAIL)

dnl =========================================================
dnl = Mailnews OAuth2 Support
dnl =========================================================
MOZ_ARG_DISABLE_BOOL(mailnews-oauth2,
[  --disable-mailnews-oauth2         Disable oauth2 support in mailnews],
    MOZ_MAILNEWS_OAUTH2=,
    MOZ_MAILNEWS_OAUTH2=1)

if test -n "$MOZ_MAILNEWS_OAUTH2"; then
  AC_DEFINE(MOZ_MAILNEWS_OAUTH2)
fi

AC_SUBST(MOZ_MAILNEWS_OAUTH2)

dnl =========================================================
dnl = LDAP
dnl =========================================================
MOZ_ARG_DISABLE_BOOL(ldap,
[  --disable-ldap          Disable LDAP support],
    MOZ_LDAP_XPCOM= )

if test -n "$MOZ_LDAP_XPCOM"; then
    AC_DEFINE(MOZ_LDAP_XPCOM)
fi

AC_SUBST(MOZ_LDAP_XPCOM)

dnl =========================================================
dnl = MAPI support (Windows only)
dnl =========================================================

MOZ_ARG_DISABLE_BOOL(mapi,
[  --disable-mapi          Disable MAPI support],
    MOZ_MAPI_SUPPORT= )

if test -n "$MOZ_MAPI_SUPPORT"; then
    AC_DEFINE(MOZ_MAPI_SUPPORT)
fi

AC_SUBST(MOZ_MAPI_SUPPORT)

dnl ========================================================
dnl = Client drawing in titlebar
dnl ========================================================
if test -n "$MOZ_CAN_DRAW_IN_TITLEBAR"; then
    case "$OS_TARGET" in
    WINNT|Darwin)
        AC_DEFINE(MOZ_CAN_DRAW_IN_TITLEBAR)
        ;;
    *)
        AC_MSG_ERROR([Drawing in the titlebar is only supported on Windows and Macintosh targets])
        ;;
    esac
fi

AC_SUBST(MOZ_CAN_DRAW_IN_TITLEBAR)

dnl ========================================================
dnl = Enable WebRTC code
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(webrtc,
[  --enable-webrtc        Enable support for WebRTC],
    MOZ_WEBRTC=1,
    MOZ_WEBRTC=)

if test -n "$MOZ_WEBRTC"; then
    AC_DEFINE(MOZ_WEBRTC)
    dnl MOZ_WEBRTC_ASSERT_ALWAYS turns on a number of safety asserts in
    dnl opt/production builds (via MOZ_CRASH())
    AC_DEFINE(MOZ_WEBRTC_ASSERT_ALWAYS)
    MOZ_RAW=1
    MOZ_VPX_ERROR_CONCEALMENT=1

dnl enable once Signaling lands
    MOZ_WEBRTC_SIGNALING=1
    AC_DEFINE(MOZ_WEBRTC_SIGNALING)
dnl enable once PeerConnection lands
    MOZ_PEERCONNECTION=1
    AC_DEFINE(MOZ_PEERCONNECTION)
    MOZ_SCTP=1
    MOZ_SRTP=1
    AC_DEFINE(MOZ_SCTP)
    AC_DEFINE(MOZ_SRTP)
    if test -n "$MOZ_X11"; then
      MOZ_WEBRTC_X11_LIBS="-lXext -lXdamage -lXfixes -lXcomposite"
    fi
else
    MOZ_SYNTH_PICO=
fi

dnl ========================================================
dnl = Force hardware AEC, disable webrtc.org AEC
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(hardware-aec-ns,
[  --enable-hardware-aec-ns   Enable support for hardware AEC and noise suppression],
    MOZ_WEBRTC_HARDWARE_AEC_NS=1,
    MOZ_WEBRTC_HARDWARE_AEC_NS=)

if test -n "$MOZ_WEBRTC_HARDWARE_AEC_NS"; then
    AC_DEFINE(MOZ_WEBRTC_HARDWARE_AEC_NS)
fi

AC_SUBST(MOZ_WEBRTC)
AC_SUBST(MOZ_WEBRTC_SIGNALING)
AC_SUBST(MOZ_PEERCONNECTION)
AC_SUBST(MOZ_WEBRTC_ASSERT_ALWAYS)
AC_SUBST(MOZ_WEBRTC_HARDWARE_AEC_NS)
AC_SUBST(MOZ_SCTP)
AC_SUBST(MOZ_SRTP)
AC_SUBST_LIST(MOZ_WEBRTC_X11_LIBS)

dnl Use integers over floats for audio on ARM
dnl because it's more efficient.
if test "$CPU_ARCH" = "arm"; then
    MOZ_SAMPLE_TYPE_S16=1
    AC_DEFINE(MOZ_SAMPLE_TYPE_S16)
    AC_SUBST(MOZ_SAMPLE_TYPE_S16)
else
    MOZ_SAMPLE_TYPE_FLOAT32=1
    AC_DEFINE(MOZ_SAMPLE_TYPE_FLOAT32)
    AC_SUBST(MOZ_SAMPLE_TYPE_FLOAT32)
fi

dnl ========================================================
dnl = Enable Gecko Media Plugins
dnl ========================================================

if test -n "$MOZ_WEBRTC"; then
    MOZ_GMP=1
fi

if test -n "$MOZ_GMP"; then
    AC_DEFINE(MOZ_GMP)
fi

AC_SUBST(MOZ_GMP)

dnl ========================================================
dnl = Enable Raw Codecs
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(raw,
[  --enable-raw           Enable support for RAW media],
    MOZ_RAW=1,
    MOZ_RAW=)

if test -n "$MOZ_RAW"; then
    AC_DEFINE(MOZ_RAW)
fi

AC_SUBST(MOZ_RAW)

dnl ========================================================
dnl = Enable Libaom AV1 Codec
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(av1,
[  --enable-av1           Enable libaom for av1 video support],
    MOZ_AV1=1,
    MOZ_AV1=)

if test -n "$MOZ_AV1"; then
    AC_DEFINE(MOZ_AV1)
fi

AC_SUBST(MOZ_AV1)

dnl ========================================================
dnl = Enable JPEG-XL Codec
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(jxl,
[  --enable-jxl           Enable libjxl and highway for jxl image support],
    MOZ_JXL=1,
    MOZ_JXL=)

if test -n "$MOZ_JXL"; then
    AC_DEFINE(MOZ_JXL)
fi

AC_SUBST(MOZ_JXL)

dnl ========================================================
dnl = Apple platform decoder support
dnl ========================================================
if test "$COMPILE_ENVIRONMENT"; then
if test -n "$MOZ_APPLEMEDIA"; then
  # hack in frameworks for fmp4 - see bug 1029974
  # We load VideoToolbox and CoreMedia dynamically, so they don't appear here.
  LDFLAGS="$LDFLAGS -framework AudioToolbox"
  dnl Verify CoreMedia is available.
  AC_CHECK_HEADER([CoreMedia/CoreMedia.h], [],
    [AC_MSG_ERROR([MacOS X 10.7 SDK or later is required])])
fi
fi # COMPILE_ENVIRONMENT

MOZ_LIBVPX_CFLAGS=
MOZ_LIBVPX_LIBS=

if test -n "$MOZ_VPX_ERROR_CONCEALMENT" ; then
    AC_DEFINE(MOZ_VPX_ERROR_CONCEALMENT)
fi

AC_SUBST_LIST(MOZ_LIBVPX_CFLAGS)
AC_SUBST_LIST(MOZ_LIBVPX_LIBS)

if test "$MOZ_SAMPLE_TYPE_FLOAT32"; then
    MOZ_VORBIS=1
else
    MOZ_TREMOR=1
fi

if test -z "$MOZ_SYSTEM_LIBVPX"; then

    dnl Detect if we can use an assembler to compile optimized assembly for libvpx.
    dnl We currently require yasm on all x86 platforms and require yasm 1.1.0 on Win32.
    dnl We currently require gcc on all arm platforms.

    dnl See if we have assembly on this platform.
    case "$OS_ARCH:$CPU_ARCH" in
    Darwin:x86)
      VPX_USE_YASM=1
      VPX_X86_ASM=1
    ;;
    Darwin:x86_64)
      VPX_USE_YASM=1
      VPX_X86_ASM=1
    ;;
    WINNT:x86_64)
      VPX_USE_YASM=1
      VPX_X86_ASM=1
    ;;
    WINNT:x86)
      dnl Check for yasm 1.1 or greater.
      if test -n "$COMPILE_ENVIRONMENT" -a -z "$YASM"; then
        AC_MSG_ERROR([yasm 1.1 or greater is required to build libvpx on Win32, but it appears not to be installed.  Install it (included in MozillaBuild 1.5.1 and newer) or configure with --disable-webm (which disables the WebM video format). See https://developer.mozilla.org/en/YASM for more details.])
      elif test -n "$COMPILE_ENVIRONMENT" -a "$_YASM_MAJOR_VERSION" -lt "1" -o \( "$_YASM_MAJOR_VERSION" -eq "1" -a "$_YASM_MINOR_VERSION" -lt "1" \) ; then
        AC_MSG_ERROR([yasm 1.1 or greater is required to build libvpx on Win32, but you appear to have version $_YASM_MAJOR_VERSION.$_YASM_MINOR_VERSION.  Upgrade to the newest version (included in MozillaBuild 1.5.1 and newer) or configure with --disable-webm (which disables the WebM video format). See https://developer.mozilla.org/en/YASM for more details.])
      else
        VPX_USE_YASM=1
        VPX_X86_ASM=1
        dnl The encoder needs obj_int_extract to get asm offsets.
      fi # COMPILE_ENVIRONMENT and others
    ;;
    *:arm*)
      if test -n "$GNU_AS" ; then
        dnl These flags are a lie; they're just used to enable the requisite
        dnl opcodes; actual arch detection is done at runtime.
        VPX_ASFLAGS="-march=armv7-a -mfpu=neon"
        VPX_AS_CONVERSION='$(PERL) $(topsrcdir)/media/libvpx/libvpx/build/make/ads2gas.pl'
        VPX_ARM_ASM=1
        dnl Building with -mfpu=neon requires either the "softfp" or the
        dnl "hardfp" ABI. Depending on the compiler's default target, and the
        dnl CFLAGS, the default ABI might be neither, in which case it is the
        dnl "softfloat" ABI.
        dnl The "softfloat" ABI is binary-compatible with the "softfp" ABI, so
        dnl we can safely mix code built with both ABIs. So, if we detect
        dnl that compiling uses the "softfloat" ABI, force the use of the
        dnl "softfp" ABI instead.
        dnl Confusingly, the __SOFTFP__ preprocessor variable indicates the
        dnl "softfloat" ABI, not the "softfp" ABI.
        dnl Note: VPX_ASFLAGS is also used in CFLAGS.
        AC_TRY_COMPILE([],
          [#ifndef __SOFTFP__
           #error "compiler target supports -mfpu=neon, so we don't have to add extra flags"
           #endif],
           VPX_ASFLAGS="$VPX_ASFLAGS -mfloat-abi=softfp"
           )
      fi
    ;;
    *:x86)
      if $CC -E -dM -</dev/null | grep -q __ELF__; then
        VPX_USE_YASM=1
        VPX_X86_ASM=1
      fi
    ;;
    *:x86_64)
      if $CC -E -dM -</dev/null | grep -q __ELF__; then
        VPX_USE_YASM=1
        VPX_X86_ASM=1
      fi
    ;;
    esac

    if test -n "$COMPILE_ENVIRONMENT" -a -n "$VPX_USE_YASM" -a -z "$YASM"; then
      AC_MSG_ERROR([yasm is a required build tool for this architecture when webm is enabled. You may either install yasm or --disable-webm (which disables the WebM video format). See https://developer.mozilla.org/en/YASM for more details.])
    fi # COMPILE_ENVIRONMENT and others

    if test -n "$VPX_USE_YASM" && test "$OS_ARCH:$CPU_ARCH" != "WINNT:x86_64"; then
      VPX_ASFLAGS="-DPIC"
    fi

    if test -n "$VPX_X86_ASM"; then
      AC_DEFINE(VPX_X86_ASM)
    elif test -n "$VPX_ARM_ASM"; then
      AC_DEFINE(VPX_ARM_ASM)
    else
      AC_MSG_WARN([No assembler or assembly support for libvpx. Using unoptimized C routines.])
    fi

    dnl native libvpx no longer has vpx_mem_set_functions
    AC_DEFINE(MOZ_VPX_NO_MEM_REPORTING)
fi

dnl ========================================================
dnl = Handle dependent MEDIA defines
dnl ========================================================

if test -n "$MOZ_VORBIS" -a -n "$MOZ_TREMOR"; then
    AC_MSG_ERROR([MOZ_VORBIS and MOZ_TREMOR are mutually exclusive!  The build system should not allow them both to be set, but they are.  Please file a bug at https://bugzilla.mozilla.org/])
fi

if test -n "$MOZ_VORBIS"; then
    AC_DEFINE(MOZ_VORBIS)
fi

if test -n "$MOZ_TREMOR"; then
    AC_DEFINE(MOZ_TREMOR)
fi

MOZ_WEBM_ENCODER=1
AC_DEFINE(MOZ_WEBM_ENCODER)
AC_SUBST(MOZ_WEBM_ENCODER)

dnl ==================================
dnl = Check alsa availability on Linux
dnl ==================================

dnl If using Linux, enable the alsa library by default
if test "$OS_TARGET" = "Linux"; then
    MOZ_ALSA=1
fi

MOZ_ARG_ENABLE_BOOL(alsa,
[  --enable-alsa          Enable Alsa support (default on Linux)],
   MOZ_ALSA=1,
   MOZ_ALSA=)

if test -n "$MOZ_ALSA"; then
    PKG_CHECK_MODULES(MOZ_ALSA, alsa, ,
         [echo "$MOZ_ALSA_PKG_ERRORS"
          AC_MSG_ERROR([You need ALSA for audio output on Linux.])])
fi

AC_SUBST(MOZ_ALSA)

dnl ========================================================
dnl = Disable PulseAudio
dnl ========================================================

dnl If using Desktop Linux, ensure that the PA library is available
case "$OS_TARGET" in
WINNT|Darwin)
    ;;
*)
    MOZ_PULSEAUDIO=1
    ;;
esac

MOZ_ARG_DISABLE_BOOL(pulseaudio,
[  --disable-pulseaudio          Disable PulseAudio support],
   MOZ_PULSEAUDIO=,
   MOZ_PULSEAUDIO=1)

if test -n "$MOZ_PULSEAUDIO"; then
    AC_DEFINE(MOZ_PULSEAUDIO)
    PKG_CHECK_MODULES(MOZ_PULSEAUDIO, libpulse, ,
         [echo "$MOZ_PULSEAUDIO_PKG_ERRORS"
          AC_MSG_ERROR([Building pulseaudio audio backend requires libpulse development package])])
fi

AC_SUBST(MOZ_PULSEAUDIO)

dnl ========================================================
dnl = Enable sndio
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(sndio,
[  --enable-sndio       Enable sndio support],
    MOZ_SNDIO=1,
    MOZ_SNDIO= )

if test -n "$MOZ_SNDIO"; then
    AC_DEFINE(MOZ_SNDIO)
    MOZ_CHECK_HEADER([sndio.h], [],
        AC_MSG_ERROR(
            [--enable-sndio specified but it requires sndio development headers]))
    AC_DEFINE(MOZ_SNDIO)
fi
AC_SUBST(MOZ_SNDIO)

dnl ========================================================
dnl NegotiateAuth
dnl ========================================================

MOZ_ARG_DISABLE_BOOL(negotiateauth,
[  --disable-negotiateauth Disable GSS-API negotiation ],
    MOZ_AUTH_EXTENSION=,
    MOZ_AUTH_EXTENSION=1 )

dnl ========================================================
dnl Pref extensions (autoconfig)
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(pref-extensions,
[  --disable-pref-extensions
                          Disable pref extensions such as autoconfig],
  MOZ_PREF_EXTENSIONS=,
  MOZ_PREF_EXTENSIONS=1 )

dnl ========================================================
dnl Searching of system directories for extensions.
dnl Note: this switch is meant to be used for test builds
dnl whose behavior should not depend on what happens to be
dnl installed on the local machine.
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(system-extension-dirs,
[  --disable-system-extension-dirs
                          Disable searching system- and account-global
                          directories for extensions of any kind; use
                          only profile-specific extension directories],
  ENABLE_SYSTEM_EXTENSION_DIRS=,
  ENABLE_SYSTEM_EXTENSION_DIRS=1 )
if test "$ENABLE_SYSTEM_EXTENSION_DIRS"; then
  AC_DEFINE(ENABLE_SYSTEM_EXTENSION_DIRS)
fi

dnl ========================================================
dnl = Universalchardet
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(universalchardet,
[  --disable-universalchardet
                          Disable universal encoding detection],
  MOZ_UNIVERSALCHARDET=,
  MOZ_UNIVERSALCHARDET=1 )

dnl ========================================================
dnl = ANGLE OpenGL->D3D translator for WebGL
dnl = * only applies to win32
dnl ========================================================

MOZ_ANGLE_RENDERER=
MOZ_D3D_CPU_SUFFIX=
MOZ_HAS_WINSDK_WITH_D3D=
MOZ_D3DCOMPILER_VISTA_DLL=
MOZ_D3DCOMPILER_VISTA_DLL_PATH=

if test "$COMPILE_ENVIRONMENT" ; then
case "$target_os" in
*mingw*)
    MOZ_ANGLE_RENDERER=1
    ;;
esac

# The DirectX SDK libraries are split into x86 and x64 sub-directories
case "${target_cpu}" in
i*86)
  MOZ_D3D_CPU_SUFFIX=x86
  ;;
x86_64)
  MOZ_D3D_CPU_SUFFIX=x64
  ;;
esac

# This is potentially set in external mozconfig files; if it's set,
# then the build exposes the "webgl" context name, which is reserved
# for conformant implementations.
if test -n "$MOZ_WEBGL_CONFORMANT"; then
  AC_DEFINE(MOZ_WEBGL_CONFORMANT)
fi

dnl ========================================================
dnl D3D compiler DLL
dnl ========================================================
MOZ_FOUND_D3D_COMPILERS=

if test -n "$MOZ_ANGLE_RENDERER"; then
  if test -z "$MOZ_D3D_CPU_SUFFIX"; then
    AC_MSG_ERROR([Couldn't determine MOZ_D3D_CPU_SUFFIX.])
  fi

  ######################################
  # Find _46+ for use by Vista+.

  # Find a D3D compiler DLL in a Windows SDK.
  MOZ_D3DCOMPILER_VISTA_DLL=
  case "$MOZ_WINSDK_MAXVER" in
  0x0603*|0x0A00*)
    MOZ_D3DCOMPILER_VISTA_DLL=d3dcompiler_47.dll
    AC_MSG_RESULT([Found D3D compiler in Windows SDK.])
  ;;
  esac

  if test -n "$MOZ_D3DCOMPILER_VISTA_DLL"; then
    # We have a name, now track down the path.
    if test -n "$WINDOWSSDKDIR"; then
      MOZ_D3DCOMPILER_VISTA_DLL_PATH="$WINDOWSSDKDIR/Redist/D3D/$MOZ_D3D_CPU_SUFFIX/$MOZ_D3DCOMPILER_VISTA_DLL"
      if test -f "$MOZ_D3DCOMPILER_VISTA_DLL_PATH"; then
        AC_MSG_RESULT([Found MOZ_D3DCOMPILER_VISTA_DLL_PATH: $MOZ_D3DCOMPILER_VISTA_DLL_PATH])
        MOZ_HAS_WINSDK_WITH_D3D=1
      else
        AC_MSG_RESULT([MOZ_D3DCOMPILER_VISTA_DLL_PATH doesn't exist: $MOZ_D3DCOMPILER_VISTA_DLL_PATH])
        AC_MSG_ERROR([Windows SDK at "$WINDOWSSDKDIR" appears broken. Try updating to MozillaBuild 1.9 final or higher.])
        MOZ_D3DCOMPILER_VISTA_DLL_PATH=
      fi
    else
      AC_MSG_RESULT([Windows SDK not found.])
    fi
  else
    AC_MSG_ERROR([Couldn't find Windows SDK 8.1 or higher needed for ANGLE.])
  fi

  if test -z "$MOZ_D3DCOMPILER_VISTA_DLL_PATH"; then
    MOZ_D3DCOMPILER_VISTA_DLL=
  fi

  # On mingw, check if headers are provided by toolchain.
  if test -n "$GNU_CC"; then
    MOZ_CHECK_HEADER(d3d10.h, MOZ_HAS_WINSDK_WITH_D3D=1)
  fi

  ######################################
  # Check that we found what we needed.
  MOZ_FOUND_A_D3D_COMPILER=

  if test -n "$MOZ_D3DCOMPILER_VISTA_DLL"; then
    MOZ_FOUND_A_D3D_COMPILER=1
    AC_MSG_RESULT([Found d3dcompiler DLL for Vista+: $MOZ_D3DCOMPILER_VISTA_DLL])
  fi

  if test -z "$CROSS_COMPILE"; then
    if test -z "MOZ_FOUND_A_D3D_COMPILER"; then
      AC_MSG_ERROR([Couldn't find an acceptable D3D compiler DLL.])
    fi
  fi
fi # MOZ_ANGLE_RENDERER

fi # COMPILE_ENVIRONMENT


dnl ========================================================
dnl Gamepad support
dnl ========================================================
MOZ_GAMEPAD_BACKEND=stub

MOZ_ARG_ENABLE_BOOL(gamepad,
[  --enable-gamepad   Enable gamepad support],
    MOZ_GAMEPAD=1,
    MOZ_GAMEPAD=)

if test "$MOZ_GAMEPAD"; then
    case "$OS_TARGET" in
    Darwin)
        MOZ_GAMEPAD_BACKEND=cocoa
        ;;
    WINNT)
        MOZ_GAMEPAD_BACKEND=windows
        ;;
    Linux)
        MOZ_CHECK_HEADER([linux/joystick.h])
        if test "$ac_cv_header_linux_joystick_h" != "yes"; then
          AC_MSG_ERROR([Can't find header linux/joystick.h, needed for gamepad support. Please install Linux kernel headers or reconfigure with --disable-gamepad to disable gamepad support.])
        fi
        MOZ_GAMEPAD_BACKEND=linux
        ;;
    *)
        ;;
   esac

  AC_DEFINE(MOZ_GAMEPAD)
fi
AC_SUBST(MOZ_GAMEPAD)
AC_SUBST(MOZ_GAMEPAD_BACKEND)

dnl ========================================================
dnl = libjpeg-turbo configuration
dnl ========================================================
MOZ_LIBJPEG_TURBO=
LIBJPEG_TURBO_USE_YASM=
if test -z "$MOZ_SYSTEM_JPEG"; then
    MOZ_LIBJPEG_TURBO=1
fi

MOZ_ARG_DISABLE_BOOL(libjpeg_turbo,
[ --disable-libjpeg-turbo  Disable optimized jpeg decoding routines],
    MOZ_LIBJPEG_TURBO=,
    MOZ_LIBJPEG_TURBO=1)

if test "$MOZ_SYSTEM_JPEG" = 1 -a "$MOZ_LIBJPEG_TURBO" = 1; then
    AC_MSG_ERROR([cannot use --with-system-jpeg with --enable-libjpeg-turbo.])
fi

dnl Detect if we can use yasm to compile libjpeg-turbo's optimized assembly
dnl files.

if test -n "$MOZ_LIBJPEG_TURBO" -a -n "$COMPILE_ENVIRONMENT"; then

  dnl Do we support libjpeg-turbo on this platform?
  case "$OS_ARCH:$CPU_ARCH" in
  Darwin:x86)
    LIBJPEG_TURBO_ASFLAGS="-DPIC -DMACHO"
  ;;
  Darwin:x86_64)
    LIBJPEG_TURBO_ASFLAGS="-D__x86_64__ -DPIC -DMACHO"
  ;;
  Darwin:arm*)
  ;;
  WINNT:x86)
    LIBJPEG_TURBO_ASFLAGS="-DPIC -DWIN32"
  ;;
  WINNT:x86_64)
    LIBJPEG_TURBO_ASFLAGS="-D__x86_64__ -DPIC -DWIN64 -DMSVC"
  ;;
  *:arm)
    LIBJPEG_TURBO_ASFLAGS="-march=armv7-a -mfpu=neon"
  ;;
  *:aarch64)
    LIBJPEG_TURBO_ASFLAGS="-march=armv8-a"
  ;;
  *:mips32)
    LIBJPEG_TURBO_ASFLAGS="-mdspr2"
  ;;
  *:x86)
    if $CC -E -dM -</dev/null | grep -q __ELF__; then
      LIBJPEG_TURBO_ASFLAGS="-DPIC -DELF"
    fi
  ;;
  *:x86_64)
    if $CC -E -dM -</dev/null | grep -q __ELF__; then
      LIBJPEG_TURBO_ASFLAGS="-D__x86_64__ -DPIC -DELF"
    fi
  ;;
  esac
fi

if test -n "$LIBJPEG_TURBO_ASFLAGS"; then
  case "$CPU_ARCH" in
dnl If we're on an x86 or x64 system which supports libjpeg-turbo's asm routines
dnl and --disable-libjpeg-turbo wasn't passed, check for Yasm, and error out if
dnl it doesn't exist or we have too old of a version.
  x86_64|x86)
    LIBJPEG_TURBO_USE_YASM=1

    if test -z "$YASM" ; then
        AC_MSG_ERROR([Yasm is required to build with libjpeg-turbo's optimized JPEG decoding routines, but you do not appear to have Yasm installed.  Either install it or configure with --disable-libjpeg-turbo to use the pure C JPEG decoder.  See https://developer.mozilla.org/en/YASM for more details.])
    fi

    dnl Check that we have the right yasm version.  We require 1.0.1 or newer
    dnl on Linux and 1.1 or newer everywhere else.
    if test "$OS_ARCH" = "Linux" ; then
        if test "$_YASM_MAJOR_VERSION" -lt "1" -o \( "$_YASM_MAJOR_VERSION" -eq "1" -a "$_YASM_MINOR_VERSION" -eq "0" -a "$_YASM_RELEASE" -lt "1" \) ; then
            AC_MSG_ERROR([Yasm 1.0.1 or greater is required to build with libjpeg-turbo's optimized JPEG decoding routines, but you appear to have version $_YASM_MAJOR_VERSION.$_YASM_MINOR_VERSION.$_YASM_RELEASE.  Upgrade to the newest version or configure with --disable-libjpeg-turbo to use the pure C JPEG decoder.  See https://developer.mozilla.org/en/YASM for more details.])
        fi
    else
        if test "$_YASM_MAJOR_VERSION" -lt "1" -o \( "$_YASM_MAJOR_VERSION" -eq "1" -a "$_YASM_MINOR_VERSION" -lt "1" \) ; then
            AC_MSG_ERROR([Yasm 1.1 or greater is required to build with libjpeg-turbo's optimized JPEG decoding routines, but you appear to have version $_YASM_MAJOR_VERSION.$_YASM_MINOR_VERSION.  Upgrade to the newest version or configure with --disable-libjpeg-turbo to use the pure C JPEG decoder.  See https://developer.mozilla.org/en/YASM for more details.])
        fi
    fi
  ;;
  esac
fi

dnl ========================================================
dnl = libav-fft configuration
dnl ========================================================

MOZ_LIBAV_FFT=

dnl Turn on libav-fft for 32-bit windows, and all 64-bit supported platforms.
dnl 32-bit linux/os x have text relocation issues.

case "$OS_ARCH:$CPU_ARCH" in
  WINNT:x86)
      MOZ_LIBAV_FFT=1
  ;;
  *:x86_64)
      MOZ_LIBAV_FFT=1
  ;;
esac

dnl Detect if we can use yasm to compile libav's assembly

if test -n "$MOZ_LIBAV_FFT" -a -n "$COMPILE_ENVIRONMENT"; then
  AC_DEFINE(MOZ_LIBAV_FFT)
  dnl Do we support libav-fft on this platform?
  case "$OS_ARCH:$CPU_ARCH" in
  Darwin:x86_64)
    LIBAV_FFT_ASFLAGS="-D__x86_64__ -DPIC -DMACHO"
  ;;
  WINNT:x86)
    LIBAV_FFT_ASFLAGS="-DPIC -DWIN32"
  ;;
  WINNT:x86_64)
    LIBAV_FFT_ASFLAGS="-D__x86_64__ -DPIC -DWIN64 -DMSVC"
  ;;
  *:x86_64)
    if $CC -E -dM -</dev/null | grep -q __ELF__; then
      LIBAV_FFT_ASFLAGS="-D__x86_64__ -DPIC -DELF"
    fi
  ;;
  *)
    AC_MSG_ERROR([libav's FFT routines are only available for 32-bit windows or 64-bit x86 based platforms.])
  ;;
  esac
fi

if test -n "$LIBAV_FFT_ASFLAGS"; then
  dnl If we're on an x86 or x64 system which supports libav-fft's asm routines
  dnl check for Yasm, and error out if it doesn't exist or we have too old of a
  dnl version.
  if test -z "$YASM" ; then
    AC_MSG_ERROR([Yasm is required to build with libav's optimized FFT routines, but you do not appear to have Yasm installed. See https://developer.mozilla.org/en/YASM for more details.])
  fi
  dnl Check that we have the right yasm version.  We require 1.0.1 or newer
  dnl on Linux and 1.1 or newer everywhere else.
  if test "$OS_ARCH" = "Linux" ; then
    if test "$_YASM_MAJOR_VERSION" -lt "1" -o \( "$_YASM_MAJOR_VERSION" -eq "1" -a "$_YASM_MINOR_VERSION" -eq "0" -a "$_YASM_RELEASE" -lt "1" \) ; then
      AC_MSG_ERROR([Yasm 1.0.1 or greater is required to build with libav's optimized FFT routines, but you do not appear to have Yasm installed.  See https://developer.mozilla.org/en/YASM for more details.])
    fi
  else
    if test "$_YASM_MAJOR_VERSION" -lt "1" -o \( "$_YASM_MAJOR_VERSION" -eq "1" -a "$_YASM_MINOR_VERSION" -lt "1" \) ; then
      AC_MSG_ERROR([Yasm 1.1 or greater is required to build with libav's optimized FFT routines, but you do not appear to have Yasm installed.  See https://developer.mozilla.org/en/YASM for more details.])
    fi
  fi
elif test -n "$MOZ_LIBAV_FFT" -a "${CPU_ARCH}" != "arm"; then
  dnl Warn if we're not building either libav or opendl-max optimized routines.
  AC_MSG_WARN([No assembler or assembly support for libav-fft.  Using unoptimized C routines.])
fi

dnl ========================================================
dnl = FFmpeg's ffvpx configuration
dnl ========================================================

MOZ_FFVPX=

dnl Build ffvpx on 32-bit Windows and all supported 64-bit platforms.
dnl 32-bit *nix has performance issues due to not supporting assembly decoder.

case "$OS_ARCH:$CPU_ARCH" in
  WINNT:x86)
      MOZ_FFVPX=1
  ;;
  *:x86_64)
      MOZ_FFVPX=1
  ;;
esac

dnl Use same conditional as MOZ_LIBAV_FFT to enable FFmpeg's ffvpx assembly decoder.
if test -n "$MOZ_LIBAV_FFT"; then
  FFVPX_ASFLAGS=$LIBAV_FFT_ASFLAGS
fi
if test -n "$MOZ_FFVPX"; then
  AC_DEFINE(MOZ_FFVPX)
fi

dnl ========================================================
dnl = Enable compilation of specific extension modules
dnl ========================================================

MOZ_ARG_ENABLE_STRING(extensions,
[  --enable-extensions     Enable extensions],
[ for option in `echo $enableval | sed 's/,/ /g'`; do
    if test "$option" = "yes" -o "$option" = "all"; then
        AC_MSG_ERROR([--enable-extensions=$option is no longer supported.])
    elif test "$option" = "no" -o "$option" = "none"; then
        MOZ_EXTENSIONS=""
    elif test "$option" = "default"; then
        MOZ_EXTENSIONS="$MOZ_EXTENSIONS $MOZ_EXTENSIONS_DEFAULT"
    elif test `echo "$option" | grep -c \^-` != 0; then
        option=`echo $option | sed 's/^-//'`
        MOZ_EXTENSIONS=`echo "$MOZ_EXTENSIONS" | sed "s/ ${option}//"`
    else
        MOZ_EXTENSIONS="$MOZ_EXTENSIONS $option"
    fi
done],
    MOZ_EXTENSIONS="$MOZ_EXTENSIONS_DEFAULT")

if test -z "$MOZ_ENABLE_GIO" -a `echo "$MOZ_EXTENSIONS" | grep -c gio` -ne 0; then
    # Suppress warning on non-X11 platforms
    if test -n "$MOZ_X11"; then
        AC_MSG_WARN([Removing gio from MOZ_EXTENSIONS due to --disable-gio.])
    fi
    MOZ_EXTENSIONS=`echo $MOZ_EXTENSIONS | sed -e 's|gio||'`
fi

if test `echo "$MOZ_EXTENSIONS" | grep -c gio` -ne 0; then
    MOZ_GIO_COMPONENT=1
    MOZ_EXTENSIONS=`echo $MOZ_EXTENSIONS | sed -e 's|gio||'`
fi
AC_SUBST(MOZ_GIO_COMPONENT)

dnl Ensure every extension exists, to avoid mostly-inscrutable error messages
dnl when trying to build a nonexistent extension.
for extension in $MOZ_EXTENSIONS; do
    if test ! -d "${srcdir}/extensions/${extension}"; then
        AC_MSG_ERROR([Unrecognized extension provided to --enable-extensions: ${extension}.])
    fi
done

if test -n "$MOZ_USE_NATIVE_POPUP_WINDOWS"; then
  AC_DEFINE(MOZ_USE_NATIVE_POPUP_WINDOWS)
fi

if test -n "$MOZ_TREE_FREETYPE"; then
   MOZ_ENABLE_CAIRO_FT=1
   FT_FONT_FEATURE="#define CAIRO_HAS_FT_FONT 1"
   CAIRO_FT_CFLAGS="-I$_topsrcdir/modules/freetype2/include"
   AC_SUBST_LIST(CAIRO_FT_CFLAGS)
fi

AC_CHECK_PROGS(WGET, wget, "")
AC_SUBST(WGET)

dnl ========================================================
dnl Bundled fonts on desktop platforms
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(bundled-fonts,
[  --enable-bundled-fonts  Enable support for bundled fonts on desktop platforms],
    MOZ_BUNDLED_FONTS=1,
    MOZ_BUNDLED_FONTS=)

if test -n "$MOZ_BUNDLED_FONTS"; then
  AC_DEFINE(MOZ_BUNDLED_FONTS)
fi

AC_SUBST(MOZ_BUNDLED_FONTS)

dnl ========================================================
dnl Verify MAR signatures
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(verify-mar,
[  --enable-verify-mar     Enable verifying MAR signatures],
    MOZ_VERIFY_MAR_SIGNATURE=1,
    MOZ_VERIFY_MAR_SIGNATURE= )

if test -n "$MOZ_VERIFY_MAR_SIGNATURE"; then
  AC_DEFINE(MOZ_VERIFY_MAR_SIGNATURE)
fi

dnl ========================================================
dnl Enable building the signmar program.
dnl This option is much different than the --enable-verify-mar option.
dnl --enable-verify-mar is for enabling the verification check on MAR
dnl files in the updater.  The --enable-signmar option is for building
dnl the signmar program.
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(signmar,
[  --enable-signmar     Enable building the signmar program],
    MOZ_ENABLE_SIGNMAR=1,
    MOZ_ENABLE_SIGNMAR= )

if test -n "$MOZ_ENABLE_SIGNMAR"; then
  if test -z "$COMPILE_ENVIRONMENT" ; then
    AC_MSG_WARN([Cannot --enable-signmar with --disable-compile-environment])
    MOZ_ENABLE_SIGNMAR=
  else
    AC_DEFINE(MOZ_ENABLE_SIGNMAR)
  fi
fi

dnl ========================================================
dnl Updater
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(updater,
[  --enable-updater       Enable building of internal updater],
    MOZ_UPDATER=1,
    MOZ_UPDATER= )

if test -n "$MOZ_UPDATER"; then
    AC_DEFINE(MOZ_UPDATER)
fi

dnl ========================================================
dnl Build the tests?
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(tests,
[  --enable-tests          Build test libraries & programs],
    ENABLE_TESTS=1,
    ENABLE_TESTS= )

if test -n "$ENABLE_TESTS"; then
    GTEST_HAS_RTTI=0
    AC_DEFINE(ENABLE_TESTS)
    AC_DEFINE_UNQUOTED(GTEST_HAS_RTTI, 0)
    AC_SUBST(GTEST_HAS_RTTI)
    if test -n "$_WIN32_MSVC"; then
          AC_DEFINE_UNQUOTED(_VARIADIC_MAX, 10)
    fi
fi

dnl ========================================================
dnl parental controls (for Windows Vista)
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(parental-controls,
[  --disable-parental-controls
                          Do not build parental controls],
   MOZ_DISABLE_PARENTAL_CONTROLS=1,
   MOZ_DISABLE_PARENTAL_CONTROLS=)
if test -n "$MOZ_DISABLE_PARENTAL_CONTROLS"; then
    AC_DEFINE(MOZ_DISABLE_PARENTAL_CONTROLS)
fi

AC_SUBST(MOZ_DISABLE_PARENTAL_CONTROLS)

dnl ========================================================
dnl = Disable smartcard support
dnl ========================================================
if test -n "$MOZ_NO_SMART_CARDS"; then
    AC_DEFINE(MOZ_NO_SMART_CARDS)
fi
AC_SUBST(MOZ_NO_SMART_CARDS)

dnl ========================================================
dnl =
dnl = Module specific options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Individual module options)

dnl ========================================================
dnl = Disable feed handling components
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(feeds,
[  --disable-feeds         Disable feed handling and processing components],
    MOZ_FEEDS=,
    MOZ_FEEDS=1 )
if test -n "$MOZ_FEEDS"; then
    AC_DEFINE(MOZ_FEEDS)
else
    if test "$MOZ_BUILD_APP" = "browser"; then
        AC_MSG_ERROR([Cannot build Firefox with --disable-feeds.])
    fi
fi

dnl ========================================================
dnl = Disable zipwriter
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(zipwriter,
[  --disable-zipwriter     Disable zipwriter component],
    MOZ_ZIPWRITER=,
    MOZ_ZIPWRITER=1 )
AC_SUBST(MOZ_ZIPWRITER)

dnl ========================================================
dnl = faststripe theme
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(faststripe,
[  --enable-faststripe     Use faststripe theme],
    MOZ_THEME_FASTSTRIPE=1,
    MOZ_THEME_FASTSTRIPE= )
AC_SUBST(MOZ_THEME_FASTSTRIPE)

dnl ========================================================
dnl =
dnl = Feature options that require extra sources to be pulled
dnl =
dnl ========================================================
dnl MOZ_ARG_HEADER(Features that require extra sources)

dnl ========================================================
dnl =
dnl = Runtime debugging and Optimization Options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Runtime debugging and Optimizations)

dnl ========================================================
dnl = Enable code optimization. ON by default.
dnl ========================================================
if test -z "$MOZ_OPTIMIZE_FLAGS"; then
    MOZ_OPTIMIZE_FLAGS="-O"
fi

MOZ_ARG_ENABLE_STRING(optimize,
[  --disable-optimize      Disable compiler optimization
  --enable-optimize=[OPT] Specify compiler optimization flags [OPT=-O]],
[ if test "$enableval" != "no"; then
    MOZ_OPTIMIZE=1
    if test -n "$enableval" -a "$enableval" != "yes"; then
        MOZ_OPTIMIZE_FLAGS=`echo "$enableval" | sed -e 's|\\\ | |g'`
        MOZ_OPTIMIZE=2
    fi
else
    MOZ_OPTIMIZE=
fi ], MOZ_OPTIMIZE=1)

MOZ_SET_FRAMEPTR_FLAGS

if test "$COMPILE_ENVIRONMENT"; then
if test -n "$MOZ_OPTIMIZE"; then
    AC_MSG_CHECKING([for valid C compiler optimization flags])
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS $MOZ_OPTIMIZE_FLAGS"
    AC_TRY_COMPILE([#include <stdio.h>],
        [printf("Hello World\n");],
        _results=yes,
        _results=no)
    AC_MSG_RESULT([$_results])
    if test "$_results" = "no"; then
        AC_MSG_ERROR([These compiler flags for C are invalid: $MOZ_OPTIMIZE_FLAGS])
    fi
    CFLAGS=$_SAVE_CFLAGS
fi
fi # COMPILE_ENVIRONMENT

AC_SUBST(MOZ_OPTIMIZE)
AC_SUBST(MOZ_FRAMEPTR_FLAGS)
AC_SUBST(MOZ_OPTIMIZE_FLAGS)
AC_SUBST(MOZ_OPTIMIZE_LDFLAGS)
AC_SUBST_LIST(MOZ_ALLOW_HEAP_EXECUTE_FLAGS)
AC_SUBST(MOZ_PGO_OPTIMIZE_FLAGS)

dnl ========================================================
dnl = Disable treating compiler warnings as errors
dnl ========================================================
if test -z "$MOZ_ENABLE_WARNINGS_AS_ERRORS"; then
   WARNINGS_AS_ERRORS=''
fi

dnl ========================================================
dnl = Enable runtime logging
dnl ========================================================
AC_DEFINE(MOZ_LOGGING)
AC_DEFINE(FORCE_PR_LOG)

dnl ========================================================
dnl = This will enable logging of addref, release, ctor, dtor.
dnl ========================================================
_ENABLE_LOGREFCNT=42
MOZ_ARG_ENABLE_BOOL(logrefcnt,
[  --enable-logrefcnt      Enable logging of refcounts (default=debug) ],
    _ENABLE_LOGREFCNT=1,
    _ENABLE_LOGREFCNT= )
if test "$_ENABLE_LOGREFCNT" = "1"; then
    AC_DEFINE(FORCE_BUILD_REFCNT_LOGGING)
elif test -z "$_ENABLE_LOGREFCNT"; then
    AC_DEFINE(NO_BUILD_REFCNT_LOGGING)
fi

dnl ========================================================
dnl moz_dump_painting
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(dump-painting,
[  --enable-dump-painting          Enable paint debugging.],
    MOZ_DUMP_PAINTING=1,
    MOZ_DUMP_PAINTING= )
if test -n "$MOZ_DUMP_PAINTING"; then
    AC_DEFINE(MOZ_DUMP_PAINTING)
    AC_DEFINE(MOZ_LAYERS_HAVE_LOG)
fi
if test -n "$MOZ_DEBUG"; then
    AC_DEFINE(MOZ_DUMP_PAINTING)
fi

case "${OS_TARGET}" in
WINNT|Darwin)
  MOZ_GLUE_IN_PROGRAM=
  ;;
*)
  dnl On !Windows !OSX, we only want to link executables against mozglue
  MOZ_GLUE_IN_PROGRAM=1
  AC_DEFINE(MOZ_GLUE_IN_PROGRAM)
  ;;
esac

if test -n "$MOZ_REPLACE_MALLOC"; then
    dnl Replace-malloc Mac linkage quirks
    if test -n "$MACOSX_DEPLOYMENT_TARGET"; then
        AC_CACHE_CHECK([how to do weak dynamic linking],
            ac_cv_weak_dynamic_linking,
            [echo 'extern void foo() __attribute__((weak_import));int bar() { if (foo) foo(); return 0; }' > conftest.c
             if AC_TRY_COMMAND([${CC-cc} -o conftest${DLL_SUFFIX} $CFLAGS -dynamiclib $LDFLAGS -Wl,-U,_foo conftest.c $LIBS 1>&5]) &&
                test -s conftest${DLL_SUFFIX}; then
                 dnl There are several ways the linker can put link edit rules in a binary:
                 dnl - classic info only (for OSX < 10.6)
                 dnl - dyld info only
                 dnl - both
                 if "$OTOOL" -l conftest${DLL_SUFFIX} 2> /dev/null | grep "LC_DYLD_INFO_ONLY" > /dev/null; then
                     _CLASSIC_INFO=
                 else
                     _CLASSIC_INFO=1
                 fi
                 if "$OTOOL" -l conftest${DLL_SUFFIX} 2> /dev/null | grep "LC_DYLD_INFO" > /dev/null; then
                     _DYLD_INFO=1
                 else
                     _DYLD_INFO=
                 fi
                 dnl With classic info, we need to build with -flat_namespace.
                 dnl With dyld info, Xcode 4.5 does the right thing without additional flags,
                 dnl but Xcode < 4.5 requires a dummy library and -flat_namespace because it
                 dnl forgets to set the weak flag in the dyld info.
                 dnl See http://glandium.org/blog/?p=2764 for more details.
                 dnl
                 dnl Values for ac_cv_weak_dynamic_linking, and subsequently
                 dnl MOZ_REPLACE_MALLOC_LINKAGE are thus:
                 dnl - "flat namespace" when -flat_namespace alone is needed
                 dnl - "dummy library" when a dummy library and -flat_namespace are needed
                 dnl - "compiler support" when nothing is needed
                 if test -n "$_DYLD_INFO" && dyldinfo -bind conftest${DLL_SUFFIX} 2> /dev/null | grep "_foo (weak import)" > /dev/null; then
                     if test -n "$_CLASSIC_INFO"; then
                         ac_cv_weak_dynamic_linking="flat namespace"
                     else
                         ac_cv_weak_dynamic_linking="compiler support"
                     fi
                 else
                     if test -n "$_DYLD_INFO"; then
                         ac_cv_weak_dynamic_linking="dummy library"
                     else
                         ac_cv_weak_dynamic_linking="flat namespace"
                     fi
                 fi
             else
                 AC_ERROR([couldn't compile a simple C file])
             fi
             rm -rf conftest*])
        MOZ_REPLACE_MALLOC_LINKAGE="$ac_cv_weak_dynamic_linking"
    fi
fi
AC_SUBST(MOZ_REPLACE_MALLOC_LINKAGE)

dnl ========================================================
dnl = Jemalloc build setup
dnl ========================================================
if test -z "$MOZ_MEMORY"; then
  case "${target}" in
    *-mingw*)
      if test -z "$WIN32_REDIST_DIR" -a -z "$MOZ_DEBUG"; then
        AC_MSG_WARN([When not building jemalloc, you need to set WIN32_REDIST_DIR to the path to the Visual C++ Redist (usually VCINSTALLDIR\redist\x86\Microsoft.VC80.CRT, for VC++ v8) if you intend to distribute your build.])
      fi
      ;;
  esac
else
  if test "x$MOZ_DEBUG" = "x1"; then
    AC_DEFINE(MOZ_MEMORY_DEBUG)
  fi
  dnl The generic feature tests that determine how to compute ncpus are long and
  dnl complicated.  Therefore, simply define special cpp variables for the
  dnl platforms we have special knowledge of.
  case "${target}" in
  *-mingw*)
    export MOZ_NO_DEBUG_RTL=1
    ;;
  esac
fi # MOZ_MEMORY
AC_SUBST(MOZ_GLUE_IN_PROGRAM)

# Allow the application to provide a subconfigure script.
# This should be after 'export MOZ_NO_DEBUG_RTL=1' since
# ldap/c-sdk/configure refers to the enviroment value.
if test -f "${srcdir}/${MOZ_BUILD_APP}/configure.in" ; then
  do_output_subdirs() {
    if test -n "$_subconfigure_subdirs"; then
      AC_MSG_ERROR([Cannot specify more than one sub-sub-configure])
     fi
    _subconfigure_subdir="$1"
    _subconfigure_config_args="$ac_configure_args"
  }
  tmpscript=`$PYTHON -c 'import os, tempfile; print tempfile.mktemp(prefix="subscript.").replace(os.sep, "/")'` || exit 1
  ${TOOLCHAIN_PREFIX}m4 "${srcdir}/build/autoconf/subconfigure.m4" \
     "${srcdir}/build/autoconf/altoptions.m4" \
     "${srcdir}/${MOZ_BUILD_APP}/configure.in" > $tmpscript
  . $tmpscript
  rm -f $tmpscript
fi

AC_SUBST_LIST(MOZ_GLUE_WRAP_LDFLAGS)
export MOZ_GLUE_WRAP_LDFLAGS

dnl ========================================================
dnl = Enable using the clang plugin to build
dnl ========================================================

MOZ_CONFIG_CLANG_PLUGIN

dnl ========================================================
dnl = Enable stripping of libs & executables
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(strip,
[  --enable-strip          Enable stripping of libs & executables ],
    ENABLE_STRIP=1,
    ENABLE_STRIP= )

dnl ========================================================
dnl = Enable stripping of libs & executables when packaging
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(install-strip,
[  --enable-install-strip  Enable stripping of libs & executables when packaging ],
    PKG_SKIP_STRIP= ,
    PKG_SKIP_STRIP=1)

dnl ========================================================
dnl = --disable-elf-hack
dnl ========================================================

USE_ELF_HACK=1
MOZ_ARG_DISABLE_BOOL(elf-hack,
[  --disable-elf-hack      Disable elf hacks],
    [USE_ELF_HACK=],
    [USE_ELF_HACK=1])

# Only enable elfhack where supported
if test "$USE_ELF_HACK" = 1; then
    case "${HOST_OS_ARCH},${OS_ARCH}" in
    Linux,Linux)
        case "${CPU_ARCH}" in
        arm | x86 | x86_64)
            USE_ELF_HACK=1
            ;;
        *)
            USE_ELF_HACK=
            ;;
        esac
        ;;
    *)
        USE_ELF_HACK=
        ;;
    esac
fi

if test -n "$COMPILE_ENVIRONMENT" -a -n "$USE_ELF_HACK"; then
    dnl PT_GNU_RELRO segment makes the dynamic linker set a read-only flag on
    dnl memory addresses it maps to. The result is that by the time elfhack
    dnl kicks in, it is not possible to apply relocations because of that,
    dnl thus elfhack effectively skips relocations inside the PT_GNU_RELRO
    dnl segment. It makes elfhack mostly useless, so considering the problems
    dnl we have we PT_GNU_RELRO (e.g. bug 664366), and until elfhack can deal
    dnl with PT_GNU_RELRO segments, it's just simpler to disable elfhack when
    dnl the linker creates PT_GNU_RELRO segments. However, when we do want
    dnl elfhack enabled, disable PT_GNU_RELRO instead.
    AC_CACHE_CHECK([whether linker creates PT_GNU_RELRO segments],
        LINK_WITH_PT_GNU_RELRO,
        [echo "int main() {return 0;}" > conftest.${ac_ext}
         if AC_TRY_COMMAND(${CC-cc} -o conftest${ac_exeext} $LDFLAGS conftest.${ac_ext} $LIBS 1>&2) &&
            test -s conftest${ac_exeext}; then
            if ${TOOLCHAIN_PREFIX}readelf -l conftest${ac_exeext} | grep GNU_RELRO > /dev/null; then
                LINK_WITH_PT_GNU_RELRO=yes
            else
                LINK_WITH_PT_GNU_RELRO=no
            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*])
    if test "$LINK_WITH_PT_GNU_RELRO" = yes; then
        if test "$USE_ELF_HACK" = F; then
            AC_MSG_CHECKING([for -z norelro option to ld])
            _SAVE_LDFLAGS=$LDFLAGS
            LDFLAGS="$LDFLAGS -Wl,-z,norelro"
            AC_TRY_LINK(,,AC_MSG_RESULT([yes])
                        [NSPR_LDFLAGS="$NSPR_LDFLAGS -Wl,-z,norelro"],
                        AC_ERROR([--enable-elf-hack is not compatible with a linker creating a PT_GNU_RELRO segment and that doesn't support the "-z norelro" option.]))
            USE_ELF_HACK=1
        else
            AC_MSG_WARN([Disabling elfhack])
            USE_ELF_HACK=
        fi
    fi
fi # COMPILE_ENVIRONMENT and others.

dnl ========================================================
dnl = frontend JS debug mode
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(debug-js-modules,
[  --enable-debug-js-modules  Enable debug mode for frontend JS libraries],
   DEBUG_JS_MODULES=1,
   DEBUG_JS_MODULES=)

AC_SUBST(DEBUG_JS_MODULES)

dnl ========================================================
dnl = Don't precompile the startup cache
dnl ========================================================
MOZ_DISABLE_PRECOMPILED_STARTUPCACHE=

MOZ_ARG_DISABLE_BOOL(precompiled-startupcache,
[  --disable-precompiled-startupcache      Don't precompile the startup cache ],
    MOZ_DISABLE_PRECOMPILED_STARTUPCACHE=1,
	MOZ_DISABLE_PRECOMPILED_STARTUPCACHE= )

if test -n "$MOZ_DISABLE_PRECOMPILED_STARTUPCACHE"; then
  AC_DEFINE(MOZ_DISABLE_PRECOMPILED_STARTUPCACHE)
fi

AC_SUBST(MOZ_DISABLE_PRECOMPILED_STARTUPCACHE)

dnl ========================================================
dnl =
dnl = Profiling and Instrumenting
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Profiling and Instrumenting)

dnl ========================================================
dnl = Enable TaskTracer
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(tasktracer,
[  --enable-tasktracer       Set compile flags necessary for using TaskTracer],
    MOZ_TASK_TRACER=1,
    MOZ_TASK_TRACER= )
if test -n "$MOZ_TASK_TRACER"; then
    AC_DEFINE(MOZ_TASK_TRACER)
    AC_SUBST(MOZ_TASK_TRACER)
fi

dnl ========================================================
dnl Turn on reflow counting
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(reflow-perf,
[  --enable-reflow-perf    Enable reflow performance tracing],
    MOZ_REFLOW_PERF=1,
    MOZ_REFLOW_PERF= )
if test -n "$MOZ_REFLOW_PERF"; then
    AC_DEFINE(MOZ_REFLOW_PERF)
fi

dnl ========================================================
dnl = Horizon build options - set default preferences for
dnl   the horizon project. Horizon is a browser built on
dnl   top of the graphene runtime.
dnl ========================================================
if test -n "$MOZ_HORIZON"; then
    AC_DEFINE(MOZ_HORIZON)
fi
AC_SUBST(MOZ_HORIZON)

dnl ========================================================
dnl = Offer a way to disable the startup cache
dnl ========================================================

MOZ_ARG_DISABLE_BOOL(startupcache,
[  --disable-startupcache          Disable startup cache ],
    MOZ_DISABLE_STARTUPCACHE=1,
    MOZ_DISABLE_STARTUPCACHE=)

if test -n "$MOZ_DISABLE_STARTUPCACHE"; then
  AC_DEFINE(MOZ_DISABLE_STARTUPCACHE)
fi
AC_SUBST(MOZ_DISABLE_STARTUPCACHE)

dnl =========================================
dnl = Enable packaging Gaia with B2G desktop
dnl =========================================
if test -n "$GAIADIR" -a ! -d "$GAIADIR" ; then
    AC_MSG_ERROR([GAIADIR '$GAIADIR' isn't a valid directory])
fi

AC_SUBST(GAIADIR)
if test -n "$GAIADIR" ; then
    AC_DEFINE(PACKAGE_GAIA)
fi

if test -n "$FXOS_SIMULATOR" -a -z "$GAIADIR" ; then
    AC_MSG_ERROR([FXOS_SIMULATOR=1 requires GAIADIR to be defined])
fi

if test -n "$FXOS_SIMULATOR" ; then
    AC_DEFINE(FXOS_SIMULATOR)
    AC_SUBST(FXOS_SIMULATOR)
fi

dnl ========================================================
dnl = Enable Pico Speech Synthesis
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(synth-pico,
[  --enable-synth-pico  Set compile flags necessary for compiling Pico Web Speech API ],
    MOZ_SYNTH_PICO=1,
    MOZ_SYNTH_PICO= )
if test -n "$MOZ_SYNTH_PICO"; then
    AC_DEFINE(MOZ_SYNTH_PICO)
fi
AC_SUBST(MOZ_SYNTH_PICO)

dnl ========================================================
dnl = Enable Support for Time Manager API
dnl ========================================================
if test -n "$MOZ_TIME_MANAGER"; then
    AC_DEFINE(MOZ_TIME_MANAGER)
fi
AC_SUBST(MOZ_TIME_MANAGER)

dnl ========================================================
dnl = Enable Support for AudioChannelManager API
dnl ========================================================
if test -n "$MOZ_AUDIO_CHANNEL_MANAGER"; then
    AC_DEFINE(MOZ_AUDIO_CHANNEL_MANAGER)
fi
AC_SUBST(MOZ_AUDIO_CHANNEL_MANAGER)

dnl ========================================================
dnl = Enable Support for Secure Element API
dnl ========================================================
   MOZ_SECUREELEMENT=1,
if test -n "$MOZ_SECUREELEMENT"; then
   AC_DEFINE(MOZ_SECUREELEMENT)
fi
 AC_SUBST(MOZ_SECUREELEMENT)

dnl ========================================================
dnl = Support for demangling undefined symbols
dnl ========================================================
if test -z "$SKIP_LIBRARY_CHECKS"; then
    AC_LANG_SAVE
    AC_LANG_CPLUSPLUS
    AC_CHECK_FUNCS(__cxa_demangle, HAVE_DEMANGLE=1, HAVE_DEMANGLE=)
    AC_LANG_RESTORE
fi

# Demangle only for debug or DMD builds
MOZ_DEMANGLE_SYMBOLS=
if test "$HAVE_DEMANGLE" && test "$MOZ_DEBUG"; then
    MOZ_DEMANGLE_SYMBOLS=1
    AC_DEFINE(MOZ_DEMANGLE_SYMBOLS)
fi
AC_SUBST(MOZ_DEMANGLE_SYMBOLS)

dnl ========================================================
dnl = Support for gcc stack unwinding (from gcc 3.3)
dnl ========================================================
if test -z "$SKIP_LIBRARY_CHECKS"; then
    AC_LANG_SAVE
    AC_LANG_CPLUSPLUS
    MOZ_CHECK_HEADER(unwind.h, AC_CHECK_FUNCS(_Unwind_Backtrace))
    AC_LANG_RESTORE
fi

dnl ========================================================
dnl JIT observers
dnl ========================================================

MOZ_ARG_WITH_STRING(jitreport-granularity,
[  --jitreport-granularity=N
                           Default granularity at which to report JIT code
                           to external tools
                             0 - no info
                             1 - code ranges for whole functions only
                             2 - per-line information
                             3 - per-op information],
  JITREPORT_GRANULARITY=$withval,
  JITREPORT_GRANULARITY=3)

AC_DEFINE_UNQUOTED(JS_DEFAULT_JITREPORT_GRANULARITY, $JITREPORT_GRANULARITY)

dnl ========================================================
dnl = Disable Mozilla's versions of RIL and Geolocation
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(mozril-geoloc,
[  --disable-mozril-geoloc         Disable Mozilla's RIL and geolocation],
    DISABLE_MOZ_RIL_GEOLOC=1,
    DISABLE_MOZ_RIL_GEOLOC= )
if test -n "$DISABLE_MOZ_RIL_GEOLOC"; then
   AC_DEFINE(DISABLE_MOZ_RIL_GEOLOC)
fi
AC_SUBST(DISABLE_MOZ_RIL_GEOLOC)

dnl ========================================================
dnl =
dnl = Misc. Options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Misc. Options)

dnl =========================================================
dnl = Chrome format
dnl =========================================================
MOZ_ARG_ENABLE_STRING([chrome-format],
[  --enable-chrome-format=jar|flat|omni
                          Select FORMAT of chrome files during packaging],
    MOZ_CHROME_FILE_FORMAT=`echo $enableval | tr A-Z a-z`)

if test -z "$MOZ_CHROME_FILE_FORMAT"; then
    MOZ_CHROME_FILE_FORMAT=omni
fi

if test "$MOZ_CHROME_FILE_FORMAT" = "symlink"; then
    AC_MSG_ERROR([--enable-chrome-format=symlink has been deprecated. It is now used by default in $DIST/bin on platforms that support it])
fi

if test "$MOZ_CHROME_FILE_FORMAT" != "jar" &&
    test "$MOZ_CHROME_FILE_FORMAT" != "flat" &&
    test "$MOZ_CHROME_FILE_FORMAT" != "omni"; then
    AC_MSG_ERROR([--enable-chrome-format must be set to either jar, flat, or omni])
fi

dnl =========================================================
dnl = Chrome compression
dnl =========================================================
MOZ_ARG_ENABLE_STRING([chrome-compression],
[  --enable-chrome-compression=none|deflate|brotli
                          Select COMPRESSION type of chrome files during packaging],
    JAR_COMPRESSION=`echo $enableval | tr A-Z a-z`)

if test -z "$JAR_COMPRESSION"; then
    JAR_COMPRESSION=deflate
fi

if test "$JAR_COMPRESSION" != "none" &&
    test "$JAR_COMPRESSION" != "deflate" &&
    test "$JAR_COMPRESSION" != "brotli"; then
    AC_MSG_ERROR([--enable-chrome-compression must be set to either none, deflate, or brotli])
fi

dnl =========================================================
dnl Omnijar packaging (bug 552121)
dnl =========================================================
dnl Omnijar packaging is compatible with flat packaging.
dnl In unpackaged builds, omnijar looks for files as if
dnl things were flat packaged. After packaging, all files
dnl are loaded from a single jar. MOZ_CHROME_FILE_FORMAT
dnl is set to flat since putting files into jars is only
dnl done during packaging with omnijar.
if test "$MOZ_CHROME_FILE_FORMAT" = "omni"; then
    MOZ_OMNIJAR=1
    AC_DEFINE(MOZ_OMNIJAR)
fi

# Allow someone to change OMNIJAR_NAME in mozconfig
MOZ_ARG_WITH_STRING(chrome-name,
[  --with-chrome-name=CHROMENAME
                          Set chrome jar name (default=omni.ja)],
[ val=`echo $withval`
    OMNIJAR_NAME="$val"])

# Default Omni Jar Name
if test -z "$OMNIJAR_NAME" ; then
    OMNIJAR_NAME=omni.ja
fi

MOZ_PACKAGER_FORMAT="$MOZ_CHROME_FILE_FORMAT"
if test "$OS_ARCH" = "WINNT"; then
    MOZ_CHROME_FILE_FORMAT=flat
else
    MOZ_CHROME_FILE_FORMAT=symlink
fi

AC_SUBST(JAR_COMPRESSION)
AC_SUBST(OMNIJAR_NAME)
AC_SUBST(MOZ_OMNIJAR)
AC_SUBST(MOZ_PACKAGER_FORMAT)
AC_SUBST(MOZ_CHROME_FILE_FORMAT)

dnl ========================================================
dnl = Disable Jetpack
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(jetpack,
[  --disable-jetpack         Disable Jetpack Support Code],
    MOZ_JETPACK=,
    MOZ_JETPACK=1)

if test -n "$MOZ_JETPACK"; then
    AC_DEFINE(MOZ_JETPACK)
fi

AC_SUBST(MOZ_JETPACK)

dnl ========================================================
dnl = Disable Mozilla Developer Tools (server)
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(devtools-server,
[  --disable-devtools-server         Disable Mozilla Developer Tools (server)],
    MOZ_DEVTOOLS_SERVER=,
    MOZ_DEVTOOLS_SERVER=1)



if test -n "$MOZ_DEVTOOLS_SERVER"; then
    if test ! -n "$MOZ_JETPACK"; then
        AC_MSG_ERROR("Jetpack is required to include the Developer Tools Server")
    fi

    AC_DEFINE(MOZ_DEVTOOLS_SERVER)
fi

AC_SUBST(MOZ_DEVTOOLS_SERVER)

dnl ========================================================
dnl = Disable Mozilla Developer Tools (client)
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(devtools,
[  --enable-devtools           Enable Mozilla Developer Tools (client)],
    MOZ_DEVTOOLS=1,
    MOZ_DEVTOOLS=)

if test -n "$MOZ_DEVTOOLS"; then
    if test ! -n "$MOZ_DEVTOOLS_SERVER"; then
        AC_MSG_ERROR("The Developer Tools Server is required to include the client")
    fi

    AC_DEFINE(MOZ_DEVTOOLS)
fi

AC_SUBST(MOZ_DEVTOOLS)

dnl ========================================================
dnl = Disable nsUserInfo
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(userinfo,
[  --disable-userinfo         Disable nsUserInfo (default=enabled)],
    MOZ_USERINFO=,
    MOZ_USERINFO=1)

if test -n "$MOZ_USERINFO"; then
    AC_DEFINE(MOZ_USERINFO)
fi

AC_SUBST(MOZ_USERINFO)

dnl ========================================================
dnl = Define default location for MOZILLA_FIVE_HOME
dnl ========================================================
MOZ_ARG_WITH_STRING(default-mozilla-five-home,
[  --with-default-mozilla-five-home
                          Set the default value for MOZILLA_FIVE_HOME],
[ val=`echo $withval`
  AC_DEFINE_UNQUOTED(MOZ_DEFAULT_MOZILLA_FIVE_HOME,"$val") ])

dnl ========================================================
dnl = Location of the mozilla user directory (default is ~/.mozilla).],
dnl ========================================================
MOZ_ARG_WITH_STRING(user-appdir,
[  --with-user-appdir=DIR  Set user-specific appdir (default=.mozilla)],
[ val=`echo $withval`
if echo "$val" | grep "\/" >/dev/null; then
    AC_MSG_ERROR("Homedir must be single relative path.")
else
    MOZ_USER_DIR="$val"
fi])

AC_DEFINE_UNQUOTED(MOZ_USER_DIR,"$MOZ_USER_DIR")

dnl ========================================================
dnl = Doxygen configuration
dnl ========================================================
dnl Use commas to specify multiple dirs to this arg
MOZ_DOC_INPUT_DIRS='./dist/include ./dist/idl'
MOZ_ARG_WITH_STRING(doc-input-dirs,
[  --with-doc-input-dirs=DIRS
                          Header/idl dirs to create docs from],
[ MOZ_DOC_INPUT_DIRS=`echo "$withval" | sed "s/,/ /g"` ] )
AC_SUBST(MOZ_DOC_INPUT_DIRS)

dnl Use commas to specify multiple dirs to this arg
MOZ_DOC_INCLUDE_DIRS='./dist/include ./dist/include/nspr'
MOZ_ARG_WITH_STRING(doc-include-dirs,
[  --with-doc-include-dirs=DIRS
                          Include dirs to preprocess doc headers],
[ MOZ_DOC_INCLUDE_DIRS=`echo "$withval" | sed "s/,/ /g"` ] )
AC_SUBST(MOZ_DOC_INCLUDE_DIRS)

MOZ_DOC_OUTPUT_DIR='./dist/docs'
MOZ_ARG_WITH_STRING(doc-output-dir,
[  --with-doc-output-dir=DIR
                          Dir to generate docs into],
[ MOZ_DOC_OUTPUT_DIR=$withval ] )
AC_SUBST(MOZ_DOC_OUTPUT_DIR)

if test -z "$SKIP_COMPILER_CHECKS"; then
dnl ========================================================
dnl =
dnl = Compiler Options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Compiler Options)

dnl ========================================================
dnl Profile guided optimization (gcc checks)
dnl ========================================================
dnl Test for profiling options
dnl Under gcc 3.4+, use -fprofile-generate/-fprofile-use

_SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fprofile-generate -fprofile-correction"

AC_MSG_CHECKING([whether C compiler supports -fprofile-generate])
AC_TRY_COMPILE([], [return 0;],
               [ PROFILE_GEN_CFLAGS="-fprofile-generate"
                 result="yes" ], result="no")
AC_MSG_RESULT([$result])

if test $result = "yes"; then
  PROFILE_GEN_LDFLAGS="-fprofile-generate"
  PROFILE_USE_CFLAGS="-fprofile-use -fprofile-correction -Wcoverage-mismatch"
  PROFILE_USE_LDFLAGS="-fprofile-use"
fi

CFLAGS="$_SAVE_CFLAGS"

AC_SUBST(PROFILE_GEN_CFLAGS)
AC_SUBST(PROFILE_GEN_LDFLAGS)
AC_SUBST(PROFILE_USE_CFLAGS)
AC_SUBST(PROFILE_USE_LDFLAGS)

fi # ! SKIP_COMPILER_CHECKS

AC_DEFINE(CPP_THROW_NEW, [throw()])
AC_LANG_C

if test "$COMPILE_ENVIRONMENT"; then
MOZ_EXPAND_LIBS
fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl =
dnl = Build depencency options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Build dependencies)

if test "$GNU_CC" -a "$GNU_CXX"; then
  _DEPEND_CFLAGS='-MD -MP -MF $(MDDEPDIR)/$(@F).pp'
else
  dnl Don't override this for MSVC
  if test -z "$_WIN32_MSVC"; then
    _USE_CPP_INCLUDE_FLAG=
    _DEFINES_CFLAGS='$(ACDEFINES) -D_MOZILLA_CONFIG_H_ -DMOZILLA_CLIENT'
    _DEFINES_CXXFLAGS='$(ACDEFINES) -D_MOZILLA_CONFIG_H_ -DMOZILLA_CLIENT'
  else
    echo '#include <stdio.h>' > dummy-hello.c
    changequote(,)
    dnl This output is localized, split at the first double space or colon and space.
    _CL_PREFIX_REGEX="^\([^:]*:.*[ :] \)\(.*\\\stdio.h\)$"
    CL_INCLUDES_PREFIX=`${CC} -showIncludes -c -Fonul dummy-hello.c 2>&1 | sed -ne 's/'"$_CL_PREFIX_REGEX"'/\1/p'`
    _CL_STDIO_PATH=`${CC} -showIncludes -c -Fonul dummy-hello.c 2>&1 | sed -ne 's/'"$_CL_PREFIX_REGEX"'/\2/p'`
    changequote([,])
    if ! test -e "$_CL_STDIO_PATH"; then
        AC_MSG_ERROR([Unable to parse cl -showIncludes prefix. This compiler's locale has an unsupported formatting.])
    fi
    if test -z "$CL_INCLUDES_PREFIX"; then
        AC_MSG_ERROR([Cannot find cl -showIncludes prefix.])
    fi
    AC_SUBST(CL_INCLUDES_PREFIX)
    rm -f dummy-hello.c

    dnl Make sure that the build system can handle non-ASCII characters
    dnl in environment variables to prevent it from breaking silently on
    dnl non-English systems.
    NONASCII=$'\241\241'
    AC_SUBST(NONASCII)
  fi
fi

dnl ========================================================
dnl =
dnl = Static Build Options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Static build options)

# Option to enable shared gkmedias on other target operating systems.
# This is overriden for Windows regardless if it is set or not.
MOZ_ARG_ENABLE_BOOL(shared-media,
[  --enable-shared-media          Build GKMedias as a shared lib],
    GKMEDIAS_SHARED_LIBRARY=1,
    GKMEDIAS_SHARED_LIBRARY=)

# We want gkmedias always be enabled on Windows regardless of the enable bool.
if test "$OS_ARCH" = "WINNT"; then
  GKMEDIAS_SHARED_LIBRARY=1
fi

if test -n "$GKMEDIAS_SHARED_LIBRARY"; then
  AC_DEFINE(GKMEDIAS_SHARED_LIBRARY)
fi

AC_SUBST(GKMEDIAS_SHARED_LIBRARY)

# Shared JS or gkmedias needs zlib in mozglue
if test -z "$MOZ_SYSTEM_ZLIB"; then
  # XXX: Currently JS_SHARED_LIBRARY lives in mozconfigure
  if test -n "$JS_SHARED_LIBRARY" -o "$GKMEDIAS_SHARED_LIBRARY"; then
    ZLIB_IN_MOZGLUE=1
    AC_DEFINE(ZLIB_IN_MOZGLUE)
  fi
fi

AC_SUBST(ZLIB_IN_MOZGLUE)

dnl ========================================================
dnl =
dnl = Standalone module options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Standalone module options (Not for building Mozilla))

dnl Check for GLib.
dnl ========================================================

if test -z "$SKIP_PATH_CHECKS"; then
if test -z "${GLIB_CFLAGS}" -o -z "${GLIB_LIBS}" ; then
    if test "$MOZ_ENABLE_GTK" ; then
        PKG_CHECK_MODULES(GLIB, glib-2.0 >= 1.3.7 gobject-2.0)
    fi
fi
fi

if test -z "${GLIB_GMODULE_LIBS}" \
   -a -n "${GLIB_CONFIG}"\
    -a "${GLIB_CONFIG}" != no\
; then
    GLIB_GMODULE_LIBS=`$GLIB_CONFIG gmodule --libs`
fi

AC_SUBST_LIST(GLIB_GMODULE_LIBS)

if test "$USE_FC_FREETYPE"; then
    if test "$COMPILE_ENVIRONMENT"; then
        dnl ========================================================
        dnl = Check for freetype2 functionality
        dnl ========================================================
        if test "$_HAVE_FREETYPE2" -a -z "$MOZ_TREE_FREETYPE"; then
            _SAVE_LIBS="$LIBS"
            _SAVE_CFLAGS="$CFLAGS"
            LIBS="$LIBS $FT2_LIBS"
            CFLAGS="$CFLAGS $FT2_CFLAGS"

            AC_CACHE_CHECK(for FT_Bitmap_Size.y_ppem,
                ac_cv_member_FT_Bitmap_Size_y_ppem,
                [AC_TRY_COMPILE([#include <ft2build.h>
                                 #include FT_FREETYPE_H],
                                [FT_Bitmap_Size s;
                                 if (sizeof s.y_ppem) return 0;
                                 return 1],
                                ac_cv_member_FT_Bitmap_Size_y_ppem=yes,
                                ac_cv_member_FT_Bitmap_Size_y_ppem=no)])
            if test "$ac_cv_member_FT_Bitmap_Size_y_ppem" = yes; then
                HAVE_FT_BITMAP_SIZE_Y_PPEM=1
            else
                HAVE_FT_BITMAP_SIZE_Y_PPEM=0
            fi
            AC_DEFINE_UNQUOTED(HAVE_FT_BITMAP_SIZE_Y_PPEM,
                               $HAVE_FT_BITMAP_SIZE_Y_PPEM,
                               [FT_Bitmap_Size structure includes y_ppem field])

            AC_CHECK_FUNCS(FT_GlyphSlot_Embolden FT_Load_Sfnt_Table)

            LIBS="$_SAVE_LIBS"
            CFLAGS="$_SAVE_CFLAGS"
        fi

        _SAVE_CPPFLAGS="$CPPFLAGS"
        CPPFLAGS="$CPPFLAGS $FT2_CFLAGS $XCFLAGS"
        MOZ_CHECK_HEADERS([fontconfig/fcfreetype.h], ,
            [AC_MSG_ERROR(Can't find header fontconfig/fcfreetype.h.)], [#include <fontconfig/fontconfig.h>])
        CPPFLAGS="$_SAVE_CPPFLAGS"
    fi
fi

dnl ========================================================
dnl Check for pixman and cairo
dnl ========================================================

MOZ_TREE_CAIRO=1
MOZ_ARG_ENABLE_BOOL(system-cairo,
[  --enable-system-cairo   Use system cairo (located with pkgconfig)],
MOZ_TREE_CAIRO=,
MOZ_TREE_CAIRO=1 )

MOZ_TREE_PIXMAN=1
MOZ_ARG_ENABLE_BOOL(system-pixman,
[ --enable-system-pixman Use system pixman (located with pkgconfig)],
MOZ_TREE_PIXMAN=,
MOZ_TREE_PIXMAN=force,
MOZ_TREE_PIXMAN=1 )

# System cairo depends on system pixman
if test "$MOZ_TREE_PIXMAN" = "force"; then
    if test -z "$MOZ_TREE_CAIRO"; then
        AC_MSG_ERROR([--disable-system-pixman is incompatible with --enable-system-cairo.])
    else
        MOZ_TREE_PIXMAN=1
    fi
elif test -z "$MOZ_TREE_CAIRO"; then
    MOZ_TREE_PIXMAN=
fi

if test "$MOZ_TREE_PIXMAN"; then
    AC_DEFINE(MOZ_TREE_PIXMAN)
else
    PKG_CHECK_MODULES(MOZ_PIXMAN, pixman-1 >= 0.19.2)
fi

if test "$MOZ_TREE_CAIRO"; then
    MOZ_CAIRO_CFLAGS="-I${DIST}/include/cairo"
    AC_DEFINE(MOZ_TREE_CAIRO)

    if test "$OS_ARCH" = "WINNT"; then
        # For now we assume that we will have a uint64_t available through
        # one of the above headers or mozstdint.h.
        AC_DEFINE(HAVE_UINT64_T)
    fi

    # Define macros for cairo-features.h
    TEE_SURFACE_FEATURE="#define CAIRO_HAS_TEE_SURFACE 1"
    if test "$MOZ_X11"; then
        XLIB_SURFACE_FEATURE="#define CAIRO_HAS_XLIB_SURFACE 1"
        XLIB_XRENDER_SURFACE_FEATURE="#define CAIRO_HAS_XLIB_XRENDER_SURFACE 1"
        PS_SURFACE_FEATURE="#define CAIRO_HAS_PS_SURFACE 1"
    fi
    if test "$_HAVE_FREETYPE2"; then
        FT_FONT_FEATURE="#define CAIRO_HAS_FT_FONT 1"
        MOZ_ENABLE_CAIRO_FT=1
        CAIRO_FT_CFLAGS="$FT2_CFLAGS"
    fi

    case "$MOZ_WIDGET_TOOLKIT" in
      cocoa | uikit)
        QUARTZ_SURFACE_FEATURE="#define CAIRO_HAS_QUARTZ_SURFACE 1"
        QUARTZ_IMAGE_SURFACE_FEATURE="#define CAIRO_HAS_QUARTZ_IMAGE_SURFACE 1"
        QUARTZ_FONT_FEATURE="#define CAIRO_HAS_QUARTZ_FONT 1"
        ;;
      windows)
        WIN32_D2D_SURFACE_FEATURE="#define CAIRO_HAS_D2D_SURFACE 1"
        WIN32_DWRITE_FONT_FEATURE="#define CAIRO_HAS_DWRITE_FONT 1"
        WIN32_FONT_FEATURE="#define CAIRO_HAS_WIN32_FONT 1"
        WIN32_SURFACE_FEATURE="#define CAIRO_HAS_WIN32_SURFACE 1"
        MOZ_ENABLE_D2D_SURFACE=1

        if test "$COMPILE_ENVIRONMENT"; then

          dnl D3D10 Layers depend on D2D Surfaces.
          if test -n "$WIN32_D2D_SURFACE_FEATURE"; then
            MOZ_CHECK_HEADER(d3d10.h, MOZ_ENABLE_D3D10_LAYER=1)
          fi
        fi
        ;;
    esac
    if test "$USE_FC_FREETYPE"; then
        FC_FONT_FEATURE="#define CAIRO_HAS_FC_FONT 1"
    fi
    AC_SUBST(MOZ_ENABLE_CAIRO_FT)
    AC_SUBST(MOZ_ENABLE_D2D_SURFACE)
    AC_SUBST(MOZ_ENABLE_D3D10_LAYER)

    AC_SUBST(PS_SURFACE_FEATURE)
    AC_SUBST(SVG_SURFACE_FEATURE)
    AC_SUBST(XLIB_SURFACE_FEATURE)
    AC_SUBST(XLIB_XRENDER_SURFACE_FEATURE)
    AC_SUBST(QUARTZ_SURFACE_FEATURE)
    AC_SUBST(QUARTZ_IMAGE_SURFACE_FEATURE)
    AC_SUBST(WIN32_SURFACE_FEATURE)
    AC_SUBST(OS2_SURFACE_FEATURE)
    AC_SUBST(DIRECTFB_SURFACE_FEATURE)
    AC_SUBST(FT_FONT_FEATURE)
    AC_SUBST(FC_FONT_FEATURE)
    AC_SUBST(WIN32_FONT_FEATURE)
    AC_SUBST(WIN32_DWRITE_FONT_FEATURE)
    AC_SUBST(WIN32_D2D_SURFACE_FEATURE)
    AC_SUBST(QUARTZ_FONT_FEATURE)
    AC_SUBST(PNG_FUNCTIONS_FEATURE)
    AC_SUBST(QT_SURFACE_FEATURE)
    AC_SUBST(TEE_SURFACE_FEATURE)

    if test "$MOZ_X11"; then
        MOZ_CAIRO_OSLIBS="$MOZ_CAIRO_OSLIBS $XLDFLAGS -lXrender"
    fi

    CAIRO_FEATURES_H=gfx/cairo/cairo/src/cairo-features.h
else
    PKG_CHECK_MODULES(CAIRO, cairo >= $CAIRO_VERSION)
    MOZ_CAIRO_CFLAGS="$CAIRO_CFLAGS"
    MOZ_CAIRO_LIBS="$CAIRO_LIBS"
    PKG_CHECK_MODULES(CAIRO_TEE, cairo-tee >= $CAIRO_VERSION)
    if test "$MOZ_X11"; then
        PKG_CHECK_MODULES(CAIRO_XRENDER, cairo-xlib-xrender >= $CAIRO_VERSION)
        MOZ_CAIRO_LIBS="$MOZ_CAIRO_LIBS $XLDFLAGS $CAIRO_XRENDER_LIBS"
        MOZ_CAIRO_OSLIBS="$MOZ_CAIRO_LIBS"
        MOZ_CAIRO_CFLAGS="$MOZ_CAIRO_CFLAGS $CAIRO_XRENDER_CFLAGS"
    fi
fi

AC_SUBST(MOZ_TREE_CAIRO)
AC_SUBST_LIST(MOZ_CAIRO_CFLAGS)
AC_SUBST_LIST(MOZ_CAIRO_LIBS)
AC_SUBST_LIST(MOZ_CAIRO_OSLIBS)
AC_SUBST(MOZ_TREE_PIXMAN)

dnl ========================================================
dnl necko configuration options
dnl ========================================================

dnl
dnl option to disable necko's wifi scanner
dnl

MOZ_ARG_DISABLE_BOOL(necko-wifi,
[  --disable-necko-wifi    Disable necko wifi scanner],
    MOZ_NECKO_WIFI=,
    MOZ_NECKO_WIFI=1)

if test "$MOZ_NECKO_WIFI"; then
  case "$OS_TARGET" in
    Darwin)
      NECKO_WIFI=1
      ;;
    DragonFly|FreeBSD|WINNT)
      NECKO_WIFI=1
      ;;
    Linux)
      NECKO_WIFI=1
      NECKO_WIFI_DBUS=1
      ;;
  esac
fi

if test "$NECKO_WIFI"; then
  if test -z "$MOZ_ENABLE_DBUS" -a -n "$NECKO_WIFI_DBUS"; then
    AC_MSG_ERROR([Necko WiFi scanning needs DBus on your platform, remove --disable-dbus or use --disable-necko-wifi])
  fi
  AC_DEFINE(NECKO_WIFI)
  _NON_GLOBAL_ACDEFINES="$_NON_GLOBAL_ACDEFINES NECKO_WIFI"
fi
AC_SUBST(NECKO_WIFI)
AC_SUBST(NECKO_WIFI_DBUS)

dnl
dnl option to disable cookies
dnl
MOZ_ARG_DISABLE_BOOL(cookies,
[  --disable-cookies       Disable cookie support],
    NECKO_COOKIES=,
    NECKO_COOKIES=1)
AC_SUBST(NECKO_COOKIES)
if test "$NECKO_COOKIES"; then
    AC_DEFINE(NECKO_COOKIES)
    _NON_GLOBAL_ACDEFINES="$_NON_GLOBAL_ACDEFINES NECKO_COOKIES"
fi

dnl ========================================================
dnl =
dnl = Miscellaneous (former toolkit/moz.configure)
dnl =
dnl ========================================================

dnl Build Places if required
AC_SUBST(MOZ_PLACES)
if test "$MOZ_PLACES"; then
  AC_DEFINE(MOZ_PLACES)
fi

dnl Build Sync Services if required
AC_SUBST(MOZ_SERVICES_SYNC)
if test -n "$MOZ_SERVICES_SYNC"; then
  AC_DEFINE(MOZ_SERVICES_SYNC)
fi


dnl ========================================================
if test "$MOZ_DEBUG"; then
    MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS=
fi

dnl ========================================================
dnl =
dnl = Maintainer debug option (no --enable equivalent)
dnl =
dnl ========================================================

AC_SUBST(AR)
AC_SUBST(AR_FLAGS)
AC_SUBST(AR_EXTRACT)
AC_SUBST(AS)
AC_SUBST(ASFLAGS)
AC_SUBST(AS_DASH_C_FLAG)
AC_SUBST(LD)
AC_SUBST(RC)
AC_SUBST(RCFLAGS)
AC_SUBST(WINDRES)
AC_SUBST(IMPLIB)
AC_SUBST(FILTER)
AC_SUBST(BIN_FLAGS)
AC_SUBST(MOZ_AUTH_EXTENSION)
AC_SUBST(MOZ_PREF_EXTENSIONS)
AC_SUBST(MOZ_DEBUG)
AC_SUBST(MOZ_DEBUG_LDFLAGS)
AC_SUBST(WARNINGS_AS_ERRORS)
AC_SUBST_SET(MOZ_EXTENSIONS)
AC_SUBST(LIBICONV)
AC_SUBST(MOZ_TOOLKIT_SEARCH)
AC_SUBST(MOZ_FEEDS)

AC_SUBST(ENABLE_TESTS)

AC_SUBST(MOZ_UNIVERSALCHARDET)
AC_SUBST(ACCESSIBILITY)
AC_SUBST(MOZ_SPELLCHECK)
AC_SUBST(MOZ_VERIFY_MAR_SIGNATURE)
AC_SUBST(MOZ_ENABLE_SIGNMAR)
AC_SUBST(MOZ_UPDATER)

AC_SUBST(MOZ_ANGLE_RENDERER)
AC_SUBST(MOZ_D3D_CPU_SUFFIX)
AC_SUBST(MOZ_HAS_WINSDK_WITH_D3D)
AC_SUBST(MOZ_D3DCOMPILER_VISTA_DLL)
AC_SUBST(MOZ_D3DCOMPILER_VISTA_DLL_PATH)

AC_SUBST(MOZ_EXCLUDE_HYPHENATION_DICTIONARIES)
AC_SUBST(ENABLE_STRIP)
AC_SUBST(PKG_SKIP_STRIP)
AC_SUBST(STRIP_FLAGS)
AC_SUBST(USE_ELF_HACK)
AC_SUBST(INCREMENTAL_LINKER)
AC_SUBST(MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS)

AC_SUBST(MOZ_FIX_LINK_PATHS)
AC_SUBST(NSDISTMODE)

AC_SUBST(MOZ_POST_PROGRAM_COMMAND)
AC_SUBST(MOZ_LINKER_EXTRACT)

AC_SUBST(MOZ_JSDOWNLOADS)
if test -n "$MOZ_JSDOWNLOADS"; then
  AC_DEFINE(MOZ_JSDOWNLOADS)
fi

dnl ========================================================
dnl = Mac bundle name prefix
dnl ========================================================
MOZ_ARG_WITH_STRING(macbundlename-prefix,
[  --with-macbundlename-prefix=prefix
                          Prefix for MOZ_MACBUNDLE_NAME],
[ MOZ_MACBUNDLE_NAME_PREFIX="$withval"])

MOZ_MACBUNDLE_NAME=$MOZ_APP_DISPLAYNAME
if test "$MOZ_MACBUNDLE_NAME_PREFIX"; then
  MOZ_MACBUNDLE_NAME="${MOZ_MACBUNDLE_NAME_PREFIX} ${MOZ_MACBUNDLE_NAME}"
fi

if test "$MOZ_DEBUG"; then
  MOZ_MACBUNDLE_NAME="${MOZ_MACBUNDLE_NAME}Debug.app"
else
  MOZ_MACBUNDLE_NAME=${MOZ_MACBUNDLE_NAME}.app
fi
AC_SUBST(MOZ_MACBUNDLE_NAME)

dnl Mac bundle identifier (based on MOZ_APP_DISPLAYNAME)
MOZ_MACBUNDLE_ID=`echo $MOZ_APP_DISPLAYNAME | tr '[A-Z]' '[a-z]'`
MOZ_MACBUNDLE_ID=${MOZ_DISTRIBUTION_ID}.${MOZ_MACBUNDLE_ID}
if test "$MOZ_DEBUG"; then
  MOZ_MACBUNDLE_ID=${MOZ_MACBUNDLE_ID}debug
fi

AC_DEFINE_UNQUOTED(MOZ_MACBUNDLE_ID,$MOZ_MACBUNDLE_ID)
AC_SUBST(MOZ_MACBUNDLE_ID)

dnl ========================================================
dnl = Mac bundle codesign entitlements
dnl ========================================================
MOZ_ARG_WITH_STRING(macbundle-entitlement,
[  --with-macbundle-entitlement=entitlementname
                          Entitlements to add to the Mac application bundle],
[ MOZ_MACBUNDLE_ENTITLEMENT="$withval"])

AC_SUBST(MOZ_MACBUNDLE_ENTITLEMENT)

dnl ========================================================
dnl = Mac bundle codesign identity
dnl ========================================================
MOZ_ARG_WITH_STRING(macbundle-identity,
[  --with-macbundle-identity=identity
                          Identity to codesign the Mac application bundle],
[ MOZ_MACBUNDLE_IDENTITY="$withval"])

AC_SUBST(MOZ_MACBUNDLE_IDENTITY)

dnl ========================================================
dnl = Mac bundle DMG type
dnl ========================================================
MOZ_ARG_WITH_STRING(macbundle-type,
[  --with-macbundle-type=hybrid
                          Method to use to create the DMG],
[ MOZ_MACBUNDLE_TYPE="$withval"])

AC_SUBST(MOZ_MACBUNDLE_TYPE)


dnl ========================================================
dnl = Child Process Name for IPC
dnl ========================================================
MOZ_CHILD_PROCESS_NAME="plugin-container${BIN_SUFFIX}"
MOZ_CHILD_PROCESS_BUNDLE="plugin-container.app/Contents/MacOS/"

AC_SUBST(MOZ_CHILD_PROCESS_NAME)
AC_SUBST(MOZ_CHILD_PROCESS_BUNDLE)

# The following variables are available to branding and application
# configuration ($BRANDING/configure.sh and $APPLICATION/confvars.sh):
# - MOZ_APP_VENDOR: Used for application.ini's "Vendor" field, which also
# impacts profile location and user-visible fields.
# - MOZ_APP_BASENAME: Typically stays consistent for multiple branded
# versions of a given application (e.g. Aurora and Firefox both use
# "Firefox"), but may vary for full rebrandings (e.g. Iceweasel). Used
# for application.ini's "Name" field, which controls profile location in
# the absence of a "Profile" field (see below), and various system
# integration hooks (Unix remoting, Windows MessageWindow name, etc.)
# - MOZ_APP_DISPLAYNAME: Used in user-visible fields (DLL properties,
# Mac Bundle name, Updater, Installer), it is typically used for nightly
# builds (e.g. Aurora for Firefox).
# - MOZ_APP_VERSION: Defines the application version number.
# - MOZ_APP_VERSION_DISPLAY: Defines the application version number. Used
# in the "About" window. If not set, defaults to MOZ_APP_VERSION.
# - MOZ_APP_NAME: Used for e.g. the binary program file name. If not set,
# defaults to a lowercase form of MOZ_APP_BASENAME.
# - MOZ_APP_REMOTINGNAME: Used for the internal program name, which affects
# profile name and remoting. If not set, defaults to MOZ_APP_NAME.
# - MOZ_APP_PROFILE: When set, used for application.ini's
# "Profile" field, which controls profile location.
# - MOZ_APP_ID: When set, used for application.ini's "ID" field, and
# crash reporter server url.
# - MOZ_PROFILE_MIGRATOR: When set, enables profile migrator.

if test -z "$MOZ_APP_NAME"; then
   MOZ_APP_NAME=`echo $MOZ_APP_BASENAME | tr A-Z a-z`
fi

if test -z "$MOZ_APP_REMOTINGNAME"; then
   MOZ_APP_REMOTINGNAME=$MOZ_APP_NAME
fi

if test -z "$MOZ_APP_VERSION_DISPLAY"; then
   MOZ_APP_VERSION_DISPLAY=$MOZ_APP_VERSION
fi

# For extensions and langpacks, we require a max version that is compatible
# across security releases. MOZ_APP_MAXVERSION is our method for doing that.
# 24.0a1 and 24.0a2 aren't affected
# 24.0 becomes 24.*
# 24.1.1 becomes 24.*
IS_ALPHA=`echo $MOZ_APP_VERSION | grep a`
if test -z "$IS_ALPHA"; then
  changequote(,)
  if test "$(basename $MOZ_BUILD_APP)" = "suite"; then
    MOZ_APP_MAXVERSION=`echo $MOZ_APP_VERSION | sed "s|\(^[0-9]*\.[0-9]*\).*|\1|"`.*
  else
    MOZ_APP_MAXVERSION=`echo $MOZ_APP_VERSION | sed "s|\(^[0-9]*\).*|\1|"`.*
  fi
  changequote([,])
else
  MOZ_APP_MAXVERSION=$MOZ_APP_VERSION
fi

AC_SUBST(MOZ_APP_NAME)
AC_SUBST(MOZ_APP_REMOTINGNAME)
AC_SUBST(MOZ_APP_DISPLAYNAME)
AC_SUBST(MOZ_APP_BASENAME)
AC_SUBST(MOZ_APP_VENDOR)
AC_SUBST(MOZ_APP_PROFILE)
AC_SUBST(MOZ_APP_ID)
AC_SUBST(MAR_CHANNEL_ID)
AC_SUBST(ACCEPTED_MAR_CHANNEL_IDS)
AC_SUBST(MOZ_PROFILE_MIGRATOR)
AC_DEFINE_UNQUOTED(MOZ_APP_UA_NAME, "$MOZ_APP_UA_NAME")
AC_SUBST(MOZ_APP_UA_NAME)
AC_DEFINE_UNQUOTED(MOZ_APP_UA_VERSION, "$MOZ_APP_VERSION")
AC_SUBST(MOZ_APP_VERSION)
AC_SUBST(MOZ_APP_VERSION_DISPLAY)
AC_SUBST(MOZ_APP_MAXVERSION)
AC_SUBST(MOZ_UA_OS_AGNOSTIC)
if test -n "$MOZ_UA_OS_AGNOSTIC"; then
  AC_DEFINE(MOZ_UA_OS_AGNOSTIC)
fi

AC_SUBST(MOZ_APP_STATIC_INI)

AC_DEFINE_UNQUOTED(MOZ_UA_BUILDID, "$MOZ_UA_BUILDID")
AC_SUBST(MOZ_UA_BUILDID)

AC_SUBST(MOZ_PKG_SPECIAL)
AC_SUBST(MOZ_SIMPLE_PACKAGE_NAME)

AC_SUBST(MOZILLA_OFFICIAL)
if test "$MOZILLA_OFFICIAL"; then
    AC_DEFINE(MOZILLA_OFFICIAL)
    # Build revisions should always be present in official Mozilla builds
    MOZ_INCLUDE_SOURCE_INFO=1
fi

# External builds (specifically Ubuntu) may drop the hg repo information, so we allow to
# explicitly set the repository and changeset information in.
AC_SUBST(MOZ_SOURCE_REPO)
AC_SUBST(MOZ_SOURCE_CHANGESET)
AC_SUBST(MOZ_INCLUDE_SOURCE_INFO)

dnl win32 options
AC_SUBST(WIN32_REDIST_DIR)
AC_SUBST(WIN_UCRT_REDIST_DIR)

dnl ========================================================
dnl ICU Shared Library Support
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(shared-icu,
[  --enable-shared-icu           Build ICU as a shared library],
    MOZ_SHARED_ICU=1,
    MOZ_SHARED_ICU=)

# We want shared ICU to always be enabled on Windows regardless of the enable bool.
if test "$OS_ARCH" = "WINNT"; then
  MOZ_SHARED_ICU=1
fi

MOZ_CONFIG_ICU()

dnl Echo the CFLAGS to remove extra whitespace.
CFLAGS=`echo \
    $_WARNINGS_CFLAGS \
    $_COMPILATION_CFLAGS \
    $CFLAGS`

CXXFLAGS=`echo \
    $_WARNINGS_CXXFLAGS \
    $_COMPILATION_CXXFLAGS \
    $CXXFLAGS`

COMPILE_CFLAGS=`echo \
    $_DEFINES_CFLAGS \
    $COMPILE_CFLAGS`

COMPILE_CXXFLAGS=`echo \
    $_DEFINES_CXXFLAGS \
    $COMPILE_CXXFLAGS`

HOST_CFLAGS=`echo \
    $HOST_CFLAGS`

HOST_CXXFLAGS=`echo \
    $HOST_CXXFLAGS`

AC_SUBST(_DEPEND_CFLAGS)
AC_SUBST(MOZ_SYSTEM_JPEG)
AC_SUBST(MOZ_SYSTEM_PNG)
AC_SUBST(MOZ_SYSTEM_BZ2)

AC_SUBST_LIST(MOZ_JPEG_CFLAGS)
AC_SUBST_LIST(MOZ_JPEG_LIBS)
AC_SUBST_LIST(MOZ_BZ2_CFLAGS)
AC_SUBST_LIST(MOZ_BZ2_LIBS)
AC_SUBST_LIST(MOZ_PNG_CFLAGS)
AC_SUBST_LIST(MOZ_PNG_LIBS)

HOST_CMFLAGS=-fobjc-exceptions
HOST_CMMFLAGS=-fobjc-exceptions
OS_COMPILE_CMFLAGS=-fobjc-exceptions
OS_COMPILE_CMMFLAGS=-fobjc-exceptions
if test "$MOZ_WIDGET_TOOLKIT" = uikit; then
  OS_COMPILE_CMFLAGS="$OS_COMPILE_CMFLAGS -fobjc-abi-version=2 -fobjc-legacy-dispatch"
  OS_COMPILE_CMMFLAGS="$OS_COMPILE_CMMFLAGS -fobjc-abi-version=2 -fobjc-legacy-dispatch"
fi
AC_SUBST(HOST_CMFLAGS)
AC_SUBST(HOST_CMMFLAGS)
AC_SUBST(OS_COMPILE_CMFLAGS)
AC_SUBST(OS_COMPILE_CMMFLAGS)

OS_CFLAGS="$CFLAGS"
OS_CXXFLAGS="$CXXFLAGS"
OS_CPPFLAGS="$CPPFLAGS"
OS_COMPILE_CFLAGS="$COMPILE_CFLAGS"
OS_COMPILE_CXXFLAGS="$COMPILE_CXXFLAGS"
OS_LDFLAGS="$LDFLAGS"
OS_LIBS="$LIBS"
AC_SUBST(OS_CFLAGS)
AC_SUBST(OS_CXXFLAGS)
AC_SUBST(OS_CPPFLAGS)
AC_SUBST(OS_COMPILE_CFLAGS)
AC_SUBST(OS_COMPILE_CXXFLAGS)
AC_SUBST(OS_LDFLAGS)
AC_SUBST(OS_LIBS)

AC_SUBST(HOST_CC)
AC_SUBST(HOST_CXX)
AC_SUBST(HOST_CFLAGS)
AC_SUBST(HOST_CPPFLAGS)
AC_SUBST(HOST_CXXFLAGS)
AC_SUBST(HOST_LDFLAGS)
AC_SUBST(HOST_OPTIMIZE_FLAGS)
AC_SUBST(HOST_AR)
AC_SUBST(HOST_AR_FLAGS)
AC_SUBST(HOST_LD)
AC_SUBST(HOST_RANLIB)
AC_SUBST(HOST_BIN_SUFFIX)

AC_SUBST(TARGET_XPCOM_ABI)
AC_SUBST(HAVE_TOOLCHAIN_SUPPORT_MSSSE3)
AC_SUBST(HAVE_TOOLCHAIN_SUPPORT_MSSE4_1)
AC_SUBST(HAVE_X86_AVX2)
AC_SUBST(HAVE_ALTIVEC)
AC_SUBST(GCC_USE_GNU_LD)

AC_SUBST(WRAP_LDFLAGS)
AC_SUBST(MKSHLIB)
AC_SUBST(MKCSHLIB)
AC_SUBST(DSO_CFLAGS)
AC_SUBST(DSO_PIC_CFLAGS)
AC_SUBST(DSO_LDOPTS)
AC_SUBST(LIB_PREFIX)
AC_SUBST(DLL_PREFIX)
AC_SUBST(DLL_SUFFIX)
AC_DEFINE_UNQUOTED(MOZ_DLL_SUFFIX, "$DLL_SUFFIX")
AC_SUBST(LIB_SUFFIX)
AC_SUBST(OBJ_SUFFIX)
AC_SUBST(BIN_SUFFIX)
AC_SUBST(IMPORT_LIB_SUFFIX)
AC_SUBST(USE_N32)
AC_SUBST(CC_VERSION)
AC_SUBST(NS_ENABLE_TSF)
AC_SUBST(WIN32_CONSOLE_EXE_LDFLAGS)
AC_SUBST(WIN32_GUI_EXE_LDFLAGS)

AC_SUBST(MOZ_VORBIS)
AC_SUBST(MOZ_TREMOR)
AC_SUBST(MOZ_FFVPX)
AC_SUBST_LIST(FFVPX_ASFLAGS)
AC_SUBST(MOZ_VPX_ERROR_CONCEALMENT)
AC_SUBST(VPX_USE_YASM)
AC_SUBST_LIST(VPX_ASFLAGS)
AC_SUBST(VPX_AS_CONVERSION)
AC_SUBST(VPX_X86_ASM)
AC_SUBST(VPX_ARM_ASM)
AC_SUBST(LIBJPEG_TURBO_USE_YASM)
AC_SUBST_LIST(LIBJPEG_TURBO_ASFLAGS)
AC_SUBST(MOZ_LIBAV_FFT)
AC_SUBST_LIST(LIBAV_FFT_ASFLAGS)

AC_SUBST(MOZ_PACKAGE_JSSHELL)
AC_SUBST(MOZ_FOLD_LIBS)
AC_SUBST(MOZ_FOLD_LIBS_FLAGS)
AC_SUBST(SOCORRO_SYMBOL_UPLOAD_TOKEN_FILE)

AC_SUBST(DMG_TOOL)

dnl Host JavaScript runtime, if any, to use during cross compiles.
AC_SUBST(JS_BINARY)

AC_SUBST(NSS_EXTRA_SYMBOLS_FILE)

if test -n "$COMPILE_ENVIRONMENT"; then
AC_CHECK_FUNCS(posix_fadvise posix_fallocate)

dnl Check for missing components
if test "$MOZ_X11"; then
    dnl ====================================================
    dnl = Check if X headers exist
    dnl ====================================================
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS $XCFLAGS"
    AC_TRY_COMPILE([
        #include <stdio.h>
        #include <stdlib.h>
        #include <X11/Xlib.h>
        #include <X11/Intrinsic.h>
        #include <X11/extensions/XShm.h>
    ],
    [
        Display *dpy = 0;
        if ((dpy = XOpenDisplay(NULL)) == NULL) {
            fprintf(stderr, ": can't open %s\n", XDisplayName(NULL));
            exit(1);
        }
    ], [],
    [ AC_MSG_ERROR([Can't find X headers (install libxt-dev (Debian/Ubuntu), libXt-devel (Fedora), or xorg-x11-libXt-devel (SuSE)).]) ])
    CFLAGS="$_SAVE_CFLAGS"

    if test -n "$MISSING_X"; then
        AC_MSG_ERROR([ Could not find the following X libraries: $MISSING_X ]);
    fi

fi # MOZ_X11

fi # COMPILE_ENVIRONMENT

dnl Set various defines and substitutions
dnl ========================================================

if test "$MOZ_DEBUG"; then
    AC_DEFINE(MOZ_REFLOW_PERF)
    AC_DEFINE(MOZ_REFLOW_PERF_DSP)
fi

if test "$ACCESSIBILITY" -a "$MOZ_ENABLE_GTK" ; then
    AC_DEFINE(MOZ_ACCESSIBILITY_ATK)
    ATK_FULL_VERSION=`$PKG_CONFIG --modversion atk`
    ATK_MAJOR_VERSION=`echo ${ATK_FULL_VERSION} | $AWK -F\. '{ print $1 }'`
    ATK_MINOR_VERSION=`echo ${ATK_FULL_VERSION} | $AWK -F\. '{ print $2 }'`
    ATK_REV_VERSION=`echo ${ATK_FULL_VERSION} | $AWK -F\. '{ print $3 }'`
    AC_DEFINE_UNQUOTED(ATK_MAJOR_VERSION, $ATK_MAJOR_VERSION)
    AC_DEFINE_UNQUOTED(ATK_MINOR_VERSION, $ATK_MINOR_VERSION)
    AC_DEFINE_UNQUOTED(ATK_REV_VERSION, $ATK_REV_VERSION)
fi

if test "$MOZ_DEBUG"; then
    A11Y_LOG=1
fi
case "$MOZ_UPDATE_CHANNEL" in
aurora|beta|release|esr)
    ;;
*)
    A11Y_LOG=1
    ;;
esac
AC_SUBST(A11Y_LOG)
if test -n "$A11Y_LOG"; then
    AC_DEFINE(A11Y_LOG)
fi

AC_SUBST(MOZILLA_VERSION)

dnl Spit out some output
dnl ========================================================

dnl The following defines are used by xpcom
_NON_GLOBAL_ACDEFINES="$_NON_GLOBAL_ACDEFINES
CPP_THROW_NEW
HAVE_CPP_AMBIGUITY_RESOLVING_USING
HAVE_CPP_DYNAMIC_CAST_TO_VOID_PTR
HAVE_CPP_PARTIAL_SPECIALIZATION
HAVE_GETPAGESIZE
HAVE_ICONV
HAVE_ICONV_WITH_CONST_INPUT
HAVE_MBRTOWC
HAVE_WCRTOMB
HAVE_STATVFS64
HAVE_STATVFS
HAVE_STATFS64
HAVE_STATFS
HAVE_SYS_STATVFS_H
HAVE_SYS_STATFS_H
HAVE_SYS_VFS_H
HAVE_SYS_MOUNT_H
"

dnl ========================================================
dnl Determine options to use for running the preprocessor.
dnl ========================================================

if test -z "$GNU_CC" -a "$OS_ARCH" = "WINNT"; then
    PREPROCESS_OPTION="-P -Fi"
else
    PREPROCESS_OPTION="-E -o "
fi

AC_SUBST(PREPROCESS_OPTION)

# Avoid using obsolete NSPR features
AC_DEFINE(NO_NSPR_10_SUPPORT)

# Don't build NSS libpkix
NSS_DISABLE_LIBPKIX=1
AC_SUBST(NSS_DISABLE_LIBPKIX)

MOZ_CREATE_CONFIG_STATUS()

# Run freetype configure script

if test "$MOZ_TREE_FREETYPE"; then
   export CFLAGS="$CFLAGS $MOZ_DEBUG_FLAGS -std=c99"
   export CPPFLAGS="$CPPFLAGS $MOZ_DEBUG_FLAGS"
   export CXXFLAGS="$CXXFLAGS $MOZ_DEBUG_FLAGS"
   export LDFLAGS="$LDFLAGS $MOZ_DEBUG_LDFLAGS"
   # Spaces in the *_CFLAGS and *_LIBS variables are intentionally placed
   # to force freetype to use our settings rather than autodetecting
   if test -n "$MOZ_SYSTEM_PNG"; then
     export LIBPNG_CFLAGS="$MOZ_PNG_CFLAGS "
   else
     export LIBPNG_CFLAGS="-I$_objdir/dist/include"
   fi
   export LIBPNG_LIBS="$MOZ_PNG_LIBS "
   export ZLIB_CFLAGS="$MOZ_ZLIB_CFLAGS "
   export ZLIB_LIBS="$MOZ_ZLIB_LIBS "
   export CONFIG_FILES="unix-cc.mk:unix-cc.in unix-def.mk:unix-def.in freetype-config freetype2.pc:freetype2.in"
   ac_configure_args="$ac_configure_args --host=$target --disable-shared --with-pic=yes --with-zlib=yes --without-bzip2 --with-png=yes --without-harfbuzz"

   if ! test -e modules; then
     mkdir modules
   fi
   # Only export CC, CXX and RANLIB for the subconfigure, and avoid spilling
   # that further down the road.
   (export CC CXX RANLIB;
    AC_OUTPUT_SUBDIRS(modules/freetype2)
   ) || exit 1
fi

if test -z "$direct_nspr_config"; then
    dnl ========================================================
    dnl = Setup a nice relatively clean build environment for
    dnl = sub-configures.
    dnl ========================================================
    CC="$_SUBDIR_CC"
    CXX="$_SUBDIR_CXX"
    CFLAGS="$_SUBDIR_CFLAGS"
    CPPFLAGS="$_SUBDIR_CPPFLAGS"
    CXXFLAGS="$_SUBDIR_CXXFLAGS"
    LDFLAGS="$_SUBDIR_LDFLAGS"
    HOST_CC="$_SUBDIR_HOST_CC"
    HOST_CFLAGS="$_SUBDIR_HOST_CFLAGS"
    HOST_CXXFLAGS="$_SUBDIR_HOST_CXXFLAGS"
    HOST_LDFLAGS="$_SUBDIR_HOST_LDFLAGS"
    RC=
fi

unset MAKEFILES
unset CONFIG_FILES

# Run all configure scripts specified by a subconfigure
if test -n "$_subconfigure_subdir"; then
  _save_srcdir="$srcdir"
  srcdir="$srcdir/.."
  _save_ac_configure_args="$ac_configure_args"
  ac_configure_args="$_subconfigure_config_args"
  AC_OUTPUT_SUBDIRS_NOW("$_subconfigure_subdir",$cache_file)
  ac_configure_args="$_save_ac_configure_args"
  srcdir="$_save_srcdir"
fi

if test "$COMPILE_ENVIRONMENT"; then

export WRAP_LDFLAGS

dnl ========================================================
dnl = Setup a nice relatively clean build environment for
dnl = sub-configures.
dnl ========================================================
CC="$_SUBDIR_CC"
CXX="$_SUBDIR_CXX"
CFLAGS="$_SUBDIR_CFLAGS"
CPPFLAGS="$_SUBDIR_CPPFLAGS"
CXXFLAGS="$_SUBDIR_CXXFLAGS"
LDFLAGS="$_SUBDIR_LDFLAGS"
HOST_CC="$_SUBDIR_HOST_CC"
HOST_CFLAGS="$_SUBDIR_HOST_CFLAGS"
HOST_CXXFLAGS="$_SUBDIR_HOST_CXXFLAGS"
HOST_LDFLAGS="$_SUBDIR_HOST_LDFLAGS"
RC=

# Run the SpiderMonkey 'configure' script.
dist=$MOZ_BUILD_ROOT/dist
ac_configure_args="$_SUBDIR_CONFIG_ARGS"

# --with-system-nspr will have been converted into the relevant $NSPR_CFLAGS
# and $NSPR_LIBS.
case "${OS_TARGET}" in
  Darwin|DragonFly|FreeBSD|NetBSD|OpenBSD)
    ac_configure_args="`echo $ac_configure_args | sed -e 's/--with-system-nspr[^[:space:]]* *//'`"
    ;;
  *)
    ac_configure_args="`echo $ac_configure_args | ${TOOLCHAIN_PREFIX}sed -e 's/--with-system-nspr\S* *//'`"
    ;;
esac

if test -n "$NSPR_CFLAGS" -o -n "$NSPR_LIBS"; then
    ac_configure_args="$ac_configure_args --with-nspr-cflags='$NSPR_CFLAGS'"
    ac_configure_args="$ac_configure_args --with-nspr-libs='$NSPR_LIBS'"
fi
ac_configure_args="$ac_configure_args --prefix=$dist"
if test -n "$ZLIB_IN_MOZGLUE"; then
   MOZ_ZLIB_LIBS=
fi
export MOZ_SYSTEM_ZLIB
export MOZ_ZLIB_CFLAGS
export MOZ_ZLIB_LIBS
export MOZ_APP_NAME
export MOZ_APP_REMOTINGNAME
export MOZILLA_CENTRAL_PATH=$_topsrcdir
export STLPORT_CPPFLAGS
export STLPORT_LIBS
unset MOZ_BUILD_APP
export DIST
export MOZ_LINKER
export ZLIB_IN_MOZGLUE
export AR
export RANLIB
export CPP
export CC
export CXX
export LD
export ARFLAGS
export CPPFLAGS
export CFLAGS
export CXXFLAGS
export LDFLAGS
export HOST_CC
export HOST_CXX
export HOST_CFLAGS
export HOST_CPPFLAGS
export HOST_CXXFLAGS
export HOST_LDFLAGS

if ! test -e js; then
    mkdir js
fi

ac_configure_args="$ac_configure_args JS_STANDALONE="
AC_OUTPUT_SUBDIRS(js/src,$cache_file)
ac_configure_args="$_SUBDIR_CONFIG_ARGS"

fi # COMPILE_ENVIRONMENT

dnl we need to run config.status after js/src subconfigure because we're
dnl traversing its moz.build and we need its config.status for that.
dnl However, writing our own config.status needs to happen before
dnl subconfigures because the setup surrounding subconfigures alters
dnl many AC_SUBSTed variables.
MOZ_RUN_ALL_SUBCONFIGURES()

rm -fr confdefs* $ac_clean_files