gecko-dev/old-configure.in

dnl -*- Mode: Autoconf; tab-width: 4; indent-tabs-mode: nil; -*-
dnl vi: set tabstop=4 shiftwidth=4 expandtab syntax=m4:
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 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 Set the minimum version of toolkit libs used by mozilla
dnl ========================================================
W32API_VERSION=3.14

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

LDFLAGS="$LDFLAGS $LINKER_LDFLAGS $PACK_REL_RELOC_FLAGS"
HOST_LDFLAGS="$HOST_LDFLAGS $HOST_LINKER_LDFLAGS"

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

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

if test "$COMPILE_ENVIRONMENT"; then

# Run some logic to figure out exe extensions (mostly for mingw's sake)
AC_EXEEXT

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
fi

MOZ_TOOL_VARIABLES

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

WINVER=0A00

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

        # Make sure compilers are valid
        CXXFLAGS="$CXXFLAGS -TP"
        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

        AC_DEFINE(_CRT_SECURE_NO_WARNINGS)
        AC_DEFINE(_CRT_NONSTDC_NO_WARNINGS)

        MSVC_C_RUNTIME_DLL=vcruntime140.dll
        if test "$TARGET_CPU" != "x86"; then
            MSVC_C_RUNTIME_1_DLL=vcruntime140_1.dll
        fi
        MSVC_CXX_RUNTIME_DLL=msvcp140.dll

        # -Zc:sizedDealloc- disables C++14 global sized deallocation (see bug 1160146)
        CXXFLAGS="$CXXFLAGS -Zc:sizedDealloc-"

        AC_SUBST(MSVC_C_RUNTIME_DLL)
        AC_SUBST(MSVC_C_RUNTIME_1_DLL)
        AC_SUBST(MSVC_CXX_RUNTIME_DLL)

        AC_DEFINE(HAVE_SEH_EXCEPTIONS)
    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
        # 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(_USE_MATH_DEFINES) # Otherwise Windows' math.h doesn't #define M_PI.

    CFLAGS="$CFLAGS -D_HAS_EXCEPTIONS=0"
    CXXFLAGS="$CXXFLAGS -D_HAS_EXCEPTIONS=0"

    AC_DEFINE_UNQUOTED(WINVER,0x$WINVER)
    AC_DEFINE_UNQUOTED(_WIN32_WINNT,0x$WINVER)
    AC_DEFINE_UNQUOTED(_WIN32_IE,0x0A00)

    ;;
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(GNU_CC)
AC_SUBST(GNU_CXX)

dnl ========================================================
dnl set the defaults first
dnl ========================================================
MOZ_FIX_LINK_PATHS="-Wl,-rpath-link,${DIST}/bin -Wl,-rpath-link,${prefix}/lib"

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

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

dnl ========================================================
dnl GNU specific defaults
dnl ========================================================
if test "$GNU_CC"; then
    if test "$OS_ARCH" != "WINNT" -o -z "$CLANG_CC"; then
        DSO_PIC_CFLAGS='-fPIC'
        ASFLAGS="$ASFLAGS -fPIC"
    fi

    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_ASAN$MOZ_MSAN$MOZ_UBSAN$MOZ_TSAN$FUZZING_INTERFACES"; 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 "$OS_TARGET" in
            DragonFly|FreeBSD|NetBSD|OpenBSD)
                if test "$HAVE_LINKER_SUPPORT_IGNORE_UNRESOLVED" = 1; 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 $_objdir/mozilla-config.h -DMOZILLA_CLIENT"

    ASFLAGS="$ASFLAGS $_DEFINES_CFLAGS"
fi

if test "$GNU_CXX"; then
    CXXFLAGS="$CXXFLAGS -fno-exceptions"

    _DEFINES_CXXFLAGS="-DMOZILLA_CLIENT -include $_objdir/mozilla-config.h"
fi

dnl ========================================================
dnl System overrides of the defaults for host
dnl ========================================================
case "$host" in
*mingw*)
    if test -n "$_WIN32_MSVC"; then
        HOST_CFLAGS="$HOST_CFLAGS"
    else
        HOST_CFLAGS="$HOST_CFLAGS -mwindows"
    fi
    HOST_CFLAGS="$HOST_CFLAGS -DXP_WIN -DWIN32 -D_WIN32 -D_CRT_SECURE_NO_WARNINGS"
    HOST_OPTIMIZE_FLAGS="${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 System overrides of the defaults for target
dnl ========================================================

MOZ_OPTIMIZE_LDFLAGS="${_COMPILATION_OPTIMIZE_LDFLAGS} ${MOZ_OPTIMIZE_FLAGS}"

case "$target" in
*-darwin*)
    MOZ_OPTIMIZE_FLAGS="-O3"
    DSO_LDOPTS=''
    MOZ_FIX_LINK_PATHS=
    ;;

*-android*|*-linuxandroid*)
    # From https://github.com/android-ndk/ndk/issues/133#issuecomment-308549264
    # -Oz is smaller than -Os on clang.
    MOZ_OPTIMIZE_FLAGS="-Oz"
    # Disable the outliner, which causes performance regressions, and is
    # enabled on some platforms at -Oz.
    if test -z "$MOZ_LTO"; then
        DISABLE_OUTLINER="-mno-outline"
        _SAVE_CFLAGS=$CFLAGS
        CFLAGS="$CFLAGS $DISABLE_OUTLINER"
        AC_TRY_COMPILE(,,[MOZ_OPTIMIZE_FLAGS="$MOZ_OPTIMIZE_FLAGS $DISABLE_OUTLINER"])
        CFLAGS="$_SAVE_CFLAGS"
   else
        DISABLE_OUTLINER="-Wl,-plugin-opt=-enable-machine-outliner=never"
        _SAVE_LDFLAGS=$LDFLAGS
        LDFLAGS="$LDFLAGS $MOZ_LTO_LDFLAGS $DISABLE_OUTLINER"
        AC_TRY_LINK(,,[MOZ_OPTIMIZE_LDFLAGS="$MOZ_OPTIMIZE_LDFLAGS $DISABLE_OUTLINER"])
        LDFLAGS="$_SAVE_LDFLAGS"
    fi
    ;;

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

    case "${target_cpu}" in
    alpha*)
        CFLAGS="$CFLAGS -mieee"
        CXXFLAGS="$CXXFLAGS -mieee"
    ;;
    esac
    ;;
*-mingw*)
    DSO_PIC_CFLAGS=
    # certain versions of cygwin's makedepend barf on the
    # #include <string> vs -I./dist/include/string issue so don't use it
    if test -n "$GNU_CC" -o -n "$CLANG_CC"; then
        # $GNU_CC will match gcc and clang; while $CLANG_CC will match only clang
        if test -z "$CLANG_CC"; then
            AC_MSG_ERROR(Firefox cannot be built with mingw-gcc and requires a mingw-clang toolchain to work)
        fi

        DSO_LDOPTS='-shared'
        MOZ_FIX_LINK_PATHS=

        MOZ_OPTIMIZE_FLAGS="-O2"

        WIN32_CONSOLE_EXE_LDFLAGS=-mconsole
        WIN32_GUI_EXE_LDFLAGS=-mwindows

        # Silence problematic clang warnings
        CXXFLAGS="$CXXFLAGS -Wno-incompatible-ms-struct"
        LDFLAGS="$LDFLAGS -Wl,--no-insert-timestamp"
    else
        TARGET_COMPILER_ABI=msvc
        WIN32_SUBSYSTEM_VERSION=10.0
        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
        _DEFINES_CFLAGS="-FI $_objdir/mozilla-config.h -DMOZILLA_CLIENT"
        _DEFINES_CXXFLAGS="-FI $_objdir/mozilla-config.h -DMOZILLA_CLIENT"
        CFLAGS="$CFLAGS -Gy -Zc:inline"
        CXXFLAGS="$CXXFLAGS -Gy -Zc:inline"
        if test "$TARGET_CPU" = "x86"; then
            dnl VS2012+ defaults to -arch:SSE2. We want to target nothing
            dnl more recent, so set that explicitly here unless another
            dnl target arch has already been set.
            changequote(,)
            if test -z `echo $CFLAGS | grep -i [-/]arch:`; then
              CFLAGS="$CFLAGS -arch:SSE2"
            fi
            if test -z `echo $CXXFLAGS | grep -i [-/]arch:`; then
              CXXFLAGS="$CXXFLAGS -arch:SSE2"
            fi
            changequote([,])
        fi
        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="$CXXFLAGS -Gw"
        else
            # String tail merging doesn't play nice with ASan's ODR checker.
            LDFLAGS="$LDFLAGS -opt:nolldtailmerge"
        fi
        # Silence VS2017 15.5+ TR1 deprecation warnings hit by older gtest versions
        CXXFLAGS="$CXXFLAGS -D_SILENCE_TR1_NAMESPACE_DEPRECATION_WARNING"
        MOZ_DEBUG_LDFLAGS='-DEBUG'
        if test "$HOST_OS_ARCH" != "WINNT"; then
          # %_PDB% is a special signal to emit only the PDB basename. This
          # avoids problems in Windows tools that don't like forward-slashes.
          MOZ_DEBUG_LDFLAGS="$MOZ_DEBUG_LDFLAGS -PDBALTPATH:%_PDB%"
        fi
        MOZ_OPTIMIZE_FLAGS='-O2'
        MOZ_FIX_LINK_PATHS=
        LDFLAGS="$LDFLAGS -LARGEADDRESSAWARE"
    fi
    AC_DEFINE(WIN32_LEAN_AND_MEAN)
    dnl See http://support.microsoft.com/kb/143208 to use STL
    AC_DEFINE(NOMINMAX)
    BIN_SUFFIX='.exe'

    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="$CFLAGS -mstackrealign"
            CXXFLAGS="$CXXFLAGS -mstackrealign"
            LDFLAGS="$LDFLAGS -Wl,--large-address-aware"
        else
            DSO_LDOPTS="$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_)
        ;;
    aarch64-*)
        if test -n "$_WIN32_MSVC"; then
            DSO_LDOPTS="$DSO_LDOPTS -MACHINE:ARM64"
        fi
        AC_DEFINE(_ARM64_)
        ;;
    *)
        AC_DEFINE(_CPU_ARCH_NOT_DEFINED)
        ;;
    esac
    ;;

*-netbsd*)
    CFLAGS="$CFLAGS -Dunix"
    CXXFLAGS="$CXXFLAGS -Dunix"
    if $CC -E - -dM </dev/null | grep __ELF__ >/dev/null; then
        DSO_PIC_CFLAGS='-fPIC -DPIC'
        DSO_LDOPTS='-shared'
        MOZ_PROGRAM_LDFLAGS="$MOZ_PROGRAM_LDFLAGS -Wl,--export-dynamic"
    else
        DSO_PIC_CFLAGS='-fPIC -DPIC'
        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
    ;;

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

*-solaris*)
    MOZ_FIX_LINK_PATHS="-L${DIST}/bin"
    ;;

esac

CFLAGS="$CFLAGS $DSO_PIC_CFLAGS"
CXXFLAGS="$CXXFLAGS $DSO_PIC_CFLAGS"

if test -z "$MOZ_OPTIMIZE_FLAGS"; then
    MOZ_OPTIMIZE_FLAGS="-O"
fi


if test -z "$COMPILE_ENVIRONMENT"; then
    SKIP_COMPILER_CHECKS=1
    SKIP_LIBRARY_CHECKS=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_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T

AC_LANG_CPLUSPLUS

MOZ_CXX11

AC_LANG_C

dnl Checks for header files.
dnl ========================================================
AC_HEADER_DIRENT

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)
CFLAGS="$_SAVE_CFLAGS"

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

AC_CHECK_LIB(socket, socket)

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 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 $? -eq 0; then
        if test -z "`grep -E -i '(unrecognize|unknown)' conftest.out | grep pthread`" -a -z "`grep -E -i '(error|incorrect)' conftest.out`" ; then
            ac_cv_have_dash_pthread=yes
            case "$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 $? -eq 0; then
            if test -z "`grep -E -i '(unrecognize|unknown)' conftest.out | grep pthreads`" -a -z "`grep -E -i '(error|incorrect)' conftest.out`" ; then
                ac_cv_have_dash_pthreads=yes
                CFLAGS="$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 ========================================================
dnl Put your C++ language/feature checks below
dnl ========================================================
AC_LANG_CPLUSPLUS

ARM_ABI_PREFIX=
if test "$GNU_CC"; then
  if test "$TARGET_CPU" = "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

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

dnl End of C++ language/feature checks
AC_LANG_C

fi # ! SKIP_COMPILER_CHECKS

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

TARGET_XPCOM_ABI=
if test -n "${TARGET_CPU}" -a -n "${TARGET_COMPILER_ABI}"; then
    TARGET_XPCOM_ABI="${TARGET_CPU}-${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)
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 = Application
dnl =
dnl ========================================================

MOZ_BRANDING_DIRECTORY=
MOZ_OFFICIAL_BRANDING=
MOZ_NO_SMART_CARDS=
MOZ_BINARY_EXTENSIONS=
MOZ_DEVTOOLS=server

dnl ========================================================
dnl = Trademarked Branding
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(official-branding,
[  --enable-official-branding
                          Enable Official mozilla.org Branding
                          Do not distribute builds with
                          --enable-official-branding unless you have
                          permission to use trademarks per
                          http://www.mozilla.org/foundation/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

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)
  fi
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"
fi

AC_SUBST(MOZ_BRANDING_DIRECTORY)

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_SUBST(MOZ_DISTRIBUTION_ID)

dnl ========================================================
dnl = Enable code optimization. ON by default.
dnl ========================================================

# Use value from moz.configure if one is defined. Else use our computed
# value.
if test -n "${MOZ_CONFIGURE_OPTIMIZE_FLAGS}"; then
    MOZ_OPTIMIZE_FLAGS=${MOZ_CONFIGURE_OPTIMIZE_FLAGS}
fi

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
    if test -n "$MOZ_LTO" -a -n "$CLANG_CC"; then
        # When using llvm-based LTO, non numeric optimization levels are
        # not supported by the linker, so force the linker to use -O2 (
        # which doesn't influence the level compilation units are actually
        # compiled at).
        case " $MOZ_OPTIMIZE_FLAGS " in
        *\ -Os\ *|*\ -Oz\ *)
            MOZ_OPTIMIZE_LDFLAGS="$MOZ_OPTIMIZE_LDFLAGS -O2"
            ;;
        esac
    fi
fi
fi # COMPILE_ENVIRONMENT

AC_SUBST_LIST(MOZ_OPTIMIZE_FLAGS)
AC_SUBST_LIST(MOZ_OPTIMIZE_LDFLAGS)
AC_SUBST_LIST(MOZ_PGO_OPTIMIZE_FLAGS)

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

dnl ========================================================
dnl = Jemalloc build setup
dnl ========================================================
if test -n "$MOZ_MEMORY"; then
  case "${target}" in
  *-mingw*)
    export MOZ_NO_DEBUG_RTL=1
    ;;
  esac
fi # MOZ_MEMORY
AC_SUBST(MOZ_GLUE_IN_PROGRAM)

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

if test -n "$COMPILE_ENVIRONMENT"; then
MOZ_CONFIG_CLANG_PLUGIN
fi # COMPILE_ENVIRONMENT

AC_LANG_C

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

dnl ========================================================
dnl Check if we need the 32-bit Linux SSE2 error dialog
dnl ========================================================

AC_SUBST(MOZ_LINUX_32_SSE2_STARTUP_ERROR)

dnl ========================================================
dnl Check for cairo
dnl ========================================================

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

case "$MOZ_WIDGET_TOOLKIT" in
  windows)
    if test "$COMPILE_ENVIRONMENT"; then
      MOZ_CHECK_HEADER(d3d10.h, MOZ_ENABLE_D3D10_LAYER=1)
    fi
    ;;
esac
AC_SUBST(MOZ_ENABLE_D3D10_LAYER)

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

AC_SUBST_LIST(ASFLAGS)
AC_SUBST_LIST(MOZ_DEBUG_LDFLAGS)

AC_SUBST(MOZ_STUB_INSTALLER)

AC_SUBST_LIST(MOZ_FIX_LINK_PATHS)

AC_SUBST(MOZ_POST_PROGRAM_COMMAND)

if test -n "$MOZ_BINARY_EXTENSIONS"; then
  AC_DEFINE(MOZ_BINARY_EXTENSIONS)
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)
# If the MOZ_MACBUNDLE_ID is defined in the configure.sh, use it
# Otherwise, use MOZ_APP_DISPLAYNAME
if test -z "$MOZ_MACBUNDLE_ID"; then
   MOZ_MACBUNDLE_ID=`echo $MOZ_APP_DISPLAYNAME | tr 'A-Z' 'a-z' | tr -dc 'a-z-'`
fi
MOZ_MACBUNDLE_ID=${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 = Child Process Name for IPC
dnl ========================================================
if test "$MOZ_WIDGET_TOOLKIT" != "android"; then
  MOZ_CHILD_PROCESS_NAME="plugin-container${BIN_SUFFIX}"
else
  # We want to let Android unpack the file at install time, but it only does
  # so if the file is named libsomething.so. The lib/ path is also required
  # because the unpacked file will be under the lib/ subdirectory and will
  # need to be executed from that path.
  MOZ_CHILD_PROCESS_NAME="libplugin-container.so"
fi
MOZ_CHILD_PROCESS_BUNDLE="plugin-container.app/Contents/MacOS/"
MOZ_CHILD_PROCESS_BUNDLEID=${MOZ_DISTRIBUTION_ID}.plugincontainer
MOZ_CHILD_PROCESS_BUNDLENAME="plugin-container.app"
MOZ_CHILD_PROCESS_APPNAME="${MOZ_APP_DISPLAYNAME}CP"

AC_SUBST(MOZ_CHILD_PROCESS_NAME)
AC_SUBST(MOZ_CHILD_PROCESS_BUNDLE)
AC_SUBST(MOZ_CHILD_PROCESS_BUNDLEID)
AC_SUBST(MOZ_CHILD_PROCESS_APPNAME)
AC_SUBST(MOZ_CHILD_PROCESS_BUNDLENAME)

dnl ==========================================================
dnl = Mac Media Plugin Helper (GMP Child) Process Name for IPC
dnl ==========================================================
MOZ_EME_PROCESS_NAME="media-plugin-helper"
MOZ_EME_PROCESS_NAME_BRANDED="$MOZ_APP_DISPLAYNAME Media Plugin Helper"
MOZ_EME_PROCESS_BUNDLENAME="${MOZ_EME_PROCESS_NAME}.app"
# Generate a lower case string with no spaces to be used as the bundle ID
# for the EME helper .app of the form org.mozilla.<executable-name>.
MOZ_EME_PROCESS_BUNDLEID=`echo "$MOZ_APP_DISPLAYNAME" | tr ' ' '-'`
MOZ_EME_PROCESS_BUNDLEID=`echo "$MOZ_EME_PROCESS_BUNDLEID" | tr 'A-Z' 'a-z'`
MOZ_EME_PROCESS_BUNDLEID=${MOZ_EME_PROCESS_BUNDLEID}-${MOZ_EME_PROCESS_NAME}
MOZ_EME_PROCESS_BUNDLEID=${MOZ_DISTRIBUTION_ID}.${MOZ_EME_PROCESS_BUNDLEID}

AC_SUBST(MOZ_EME_PROCESS_NAME)
AC_SUBST(MOZ_EME_PROCESS_NAME_BRANDED)
AC_SUBST(MOZ_EME_PROCESS_BUNDLENAME)
AC_SUBST(MOZ_EME_PROCESS_BUNDLEID)

# 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_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_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.

# The following environment variables used to have an effect, but don't anymore:
# - MOZ_APP_VERSION: Defines the application version number. This was replaced with
# the contents from the version.txt file in the application directory, or
# browser/config/version.txt if there isn't one.
# - MOZ_APP_VERSION_DISPLAY: Defines the application version number. Used
# in the "About" window. This was replaced with the contents from the
# version_display.txt or version.txt in the application directory, or
# browser/config/version_display.txt.

# 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_DISPLAYNAME)
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_DEFINE_UNQUOTED(BROWSER_CHROME_URL, $BROWSER_CHROME_URL)
AC_DEFINE_UNQUOTED(BROWSER_CHROME_URL_QUOTED, "$BROWSER_CHROME_URL")

AC_SUBST(MOZ_APP_MAXVERSION)
AC_SUBST(MOZ_PKG_SPECIAL)
AC_SUBST(MOZ_SIMPLE_PACKAGE_NAME)

if test "$MOZILLA_OFFICIAL"; then
    # Build revisions should always be present in official 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 Echo the CFLAGS to remove extra whitespace.
CFLAGS=`echo \
    $_COMPILATION_CFLAGS \
    $CFLAGS`

CXXFLAGS=`echo \
    $_COMPILATION_CXXFLAGS \
    $CXXFLAGS`

ASFLAGS=`echo \
    $_COMPILATION_ASFLAGS \
    $ASFLAGS`

COMPILE_CFLAGS=`echo \
    $_DEFINES_CFLAGS \
    $COMPILE_CFLAGS`

COMPILE_CXXFLAGS=`echo \
    $_DEFINES_CXXFLAGS \
    $COMPILE_CXXFLAGS`

HOST_CFLAGS=`echo \
    $_COMPILATION_HOST_CFLAGS \
    $HOST_CFLAGS`

HOST_CXXFLAGS=`echo \
    $_COMPILATION_HOST_CXXFLAGS \
    $HOST_CXXFLAGS`

LDFLAGS=`echo \
    $LDFLAGS \
    $_COMPILATION_LDFLAGS`

HOST_LDFLAGS=`echo \
    $HOST_LDFLAGS \
    $_COMPILATION_HOST_LDFLAGS`

HOST_CMFLAGS="-x objective-c -fobjc-exceptions"
HOST_CMMFLAGS="-x objective-c++ -fobjc-exceptions"
OS_COMPILE_CMFLAGS="-x objective-c -fobjc-exceptions"
OS_COMPILE_CMMFLAGS="-x objective-c++ -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_LIST(OS_CFLAGS)
AC_SUBST_LIST(OS_CXXFLAGS)
AC_SUBST_LIST(OS_CPPFLAGS)
AC_SUBST_LIST(OS_COMPILE_CFLAGS)
AC_SUBST_LIST(OS_COMPILE_CXXFLAGS)
AC_SUBST_LIST(OS_LDFLAGS)
AC_SUBST(OS_LIBS)

AC_SUBST(HOST_CC)
AC_SUBST(HOST_CXX)
AC_SUBST_LIST(HOST_CFLAGS)
AC_SUBST_LIST(HOST_CPPFLAGS)
AC_SUBST_LIST(HOST_CXXFLAGS)
AC_SUBST(HOST_LDFLAGS)
AC_SUBST_LIST(HOST_OPTIMIZE_FLAGS)
AC_SUBST(HOST_BIN_SUFFIX)

AC_SUBST(TARGET_XPCOM_ABI)

AC_SUBST(DSO_LDOPTS)
AC_SUBST(BIN_SUFFIX)
AC_SUBST(USE_N32)
AC_SUBST(WIN32_CONSOLE_EXE_LDFLAGS)
AC_SUBST(WIN32_GUI_EXE_LDFLAGS)

AC_SUBST(MOZ_DEVTOOLS)

AC_SUBST(MOZ_PACKAGE_JSSHELL)

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)

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

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

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

# Avoid using obsolete NSPR features
AC_DEFINE(NO_NSPR_10_SUPPORT)

MOZ_CREATE_CONFIG_STATUS()

rm -fr confdefs* $ac_clean_files