configure.ac 159 KB
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dnl Autoconf settings for vlc
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AC_COPYRIGHT([Copyright 2002-2010 the VideoLAN team])
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AC_INIT(vlc, 1.1.0-pre1)
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VERSION_MAJOR="1"
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VERSION_MINOR="1"
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VERSION_REVISION="0"
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VERSION_EXTRA="-pre1"
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PKGDIR="vlc"
AC_SUBST(PKGDIR)
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CONFIGURE_LINE="`echo "$0 $ac_configure_args" | sed -e 's/\\\/\\\\\\\/g'`"
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CODENAME="The Luggage"
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COPYRIGHT_YEARS="1996-2010"
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AC_PREREQ(2.59c)
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AC_CONFIG_SRCDIR(src/libvlc.c)
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AC_CONFIG_AUX_DIR(autotools)
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AC_CONFIG_MACRO_DIR(m4)
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AC_CONFIG_LIBOBJ_DIR(compat)
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AC_CANONICAL_BUILD
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AC_CANONICAL_HOST
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AC_PRESERVE_HELP_ORDER
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AM_INIT_AUTOMAKE(tar-ustar)
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AM_CONFIG_HEADER(config.h)

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# Disable with "./configure --disable-silent-rules" or "make V=1"
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m4_ifdef([AM_SILENT_RULES], [
  AM_SILENT_RULES([yes])
], [
  AM_DEFAULT_VERBOSITY=1
  AC_SUBST(AM_DEFAULT_VERBOSITY)
])
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dnl Too many people are not aware of maintainer mode:
dnl If you want to use it, you definitely know what you are doing, so
dnl you can specify "--disable-maintainer-mode". But if you want the default
dnl automake behavior, you've likely never heard of maintainer mode, so we
dnl can't expect you to enable it manually.

AS_IF([test "x${enable_maintainer_mode}" != "xno"],
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    [enable_maintainer_mode="yes"])
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AM_MAINTAINER_MODE

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dnl
dnl Directories
dnl
dnl vlcincludedir="\${includedir}/\${PKGDIR}"
dnl AC_SUBST(vlcincludedir)
vlcdatadir="\${datadir}/\${PKGDIR}"
AC_SUBST(vlcdatadir)
vlclibdir="\${libdir}/\${PKGDIR}"
AC_SUBST(vlclibdir)

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dnl
dnl  Save *FLAGS
dnl
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VLC_SAVE_FLAGS
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dnl
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dnl Check for tools
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dnl
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AC_PROG_CC_C99
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AC_USE_SYSTEM_EXTENSIONS
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AC_DEFINE([_FORTIFY_SOURCE], 2, [Define to '2' to get glibc warnings.])
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AM_PROG_CC_C_O
AC_PROG_CXX
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AC_PROG_CPP
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AC_PROG_OBJC
_AM_DEPENDENCIES([OBJC])
AC_PROG_EGREP
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AC_PROG_MAKE_SET
AC_PROG_INSTALL
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AM_PROG_AS
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dnl Find the right ranlib, even when cross-compiling
AC_CHECK_TOOL(RANLIB, ranlib, :)
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AC_CHECK_TOOL(STRIP, strip, :)
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AC_CHECK_TOOL(AR, ar, :)
AC_CHECK_TOOL(LD, ld, :)
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AC_CHECK_TOOL(DLLTOOL, dlltool, :)
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dnl Check for compiler properties
AC_C_CONST
AC_C_INLINE
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AC_C_RESTRICT
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dnl Extend the --help string at the current spot.
AC_DEFUN([EXTEND_HELP_STRING], [m4_divert_once([HELP_ENABLE], [$1])])

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dnl Allow binary package maintainer to pass a custom string to avoid
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dnl cache problem
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AC_ARG_WITH(binary-version,
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	AS_HELP_STRING([--with-binary-version=STRING],
	     [To avoid plugins cache problem between binary version]),[],[])
AS_IF([test -n "${with_binary_version}"],[
      AC_DEFINE_UNQUOTED([DISTRO_VERSION],["${with_binary_version}"],
			 [Binary specific version])
      ])


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dnl
dnl  Check for the contrib directory
dnl
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AC_ARG_WITH(contrib,
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    [  --without-contrib       do not use the libraries in CONTRIB_DIR],[],[])
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AC_ARG_VAR([CONTRIB_DIR], [directory containing pre-built contrib, overriding extras/contrib])
AS_IF([test "${with_contrib}" != "no"],[
  AS_IF([test -z "$CONTRIB_DIR"], [
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      topdir="`dirname $0`"
      if test "`echo \"$topdir\" | cut -c 1`" != "/"; then
         topdir="`pwd`/$topdir"
      fi
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      CONTRIB_DIR="${topdir}/extras/contrib/hosts/${host}"
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      if ! test -d "$CONTRIB_DIR"
      then
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        gccmachine=`$CC -dumpmachine`
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        CONTRIB_DIR="${topdir}/extras/contrib/hosts/${gccmachine}"
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      fi
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  ])
  AC_MSG_CHECKING([for libs in ${CONTRIB_DIR}])
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  AS_IF([test -d "${CONTRIB_DIR}/lib"],[
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    AC_MSG_RESULT([yes])
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    AC_SUBST(CONTRIB_DIR)
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    export PATH=${CONTRIB_DIR}/bin:$PATH
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    CPPFLAGS="${CPPFLAGS} -I${CONTRIB_DIR}/include"
    CPPFLAGS_save="${CPPFLAGS_save} -I${CONTRIB_DIR}/include"
    CFLAGS="${CFLAGS} -I${CONTRIB_DIR}/include"
    CFLAGS_save="${CFLAGS_save} -I${CONTRIB_DIR}/include"
    CXXFLAGS="${CXXFLAGS} -I${CONTRIB_DIR}/include"
    CXXFLAGS_save="${CXXFLAGS_save} -I${CONTRIB_DIR}/include"
    OBJCFLAGS="${OBJCFLAGS} -I${CONTRIB_DIR}/include"
    OBJCFLAGS_save="${OBJCFLAGS_save} -I${CONTRIB_DIR}/include"
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    if test "$build" = "$host" -o "$PKG_CONFIG_LIBDIR"; then
        export PKG_CONFIG_PATH="${CONTRIB_DIR}/lib/pkgconfig:$PKG_CONFIG_PATH"
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    else
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        export PKG_CONFIG_LIBDIR="${CONTRIB_DIR}/lib/pkgconfig"
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    fi
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    LDFLAGS="${LDFLAGS} -L${CONTRIB_DIR}/lib"
    LDFLAGS_save="${LDFLAGS_save} -L${CONTRIB_DIR}/lib"
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    if test -z "$with_mozilla_sdk_path"; then
       with_mozilla_sdk_path="${CONTRIB_DIR}/gecko-sdk"
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    fi
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    if test -z "$with_cyberlink_tree"; then
       with_cyberlink_tree="${CONTRIB_DIR}/src/clinkcc"
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    fi
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    if test "${SYS}" = "darwin"; then
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      export LD_LIBRARY_PATH="${CONTRIB_DIR}/lib:$LD_LIBRARY_PATH"
      export DYLD_LIBRARY_PATH="${CONTRIB_DIR}/lib:$DYLD_LIBRARY_PATH"
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    elif test "${SYS}" = "beos"; then
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      export LIBRARY_PATH="${CONTRIB_DIR}/lib:$LIBRARY_PATH"
      export BELIBRARIES="${CONTRIB_DIR}/lib:$BELIBRARIES"
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    fi
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  ],[
    AC_MSG_RESULT([no])
    CONTRIB_DIR=""
  ])
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])
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dnl
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dnl  Set default values
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dnl
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LDFLAGS_vlc="${LDFLAGS}"
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dnl
dnl  Check the operating system
dnl
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case "${host_os}" in
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  "")
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    SYS=unknown
    ;;
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  linux*)
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    SYS=linux
    ;;
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  bsdi*)
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    SYS=bsdi
    CFLAGS_save="${CFLAGS_save} -pthread"; CFLAGS="${CFLAGS_save}"
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    VLC_ADD_LIBS([vcd cdda vcdx],[-ldvd])
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    ;;
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  *bsd*)
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    SYS="${host_os}"
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    CFLAGS_save="${CFLAGS_save} -pthread"; CFLAGS="${CFLAGS_save}"
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    case "${host_os}" in
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      freebsd*)
        CPPFLAGS_save="${CPPFLAGS_save} -I/usr/local/include"
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        CPPFLAGS="${CPPFLAGS_save}"
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        LDFLAGS_save="${LDFLAGS_save} -L/usr/local/lib"
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        LDFLAGS="${LDFLAGS_save}"
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        ;;
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      openbsd*)
        CPPFLAGS_save="${CPPFLAGS_save} -I/usr/local/include -I/usr/X11R6/include"
        CPPFLAGS="${CPPFLAGS_save}"
        LDFLAGS_save="${LDFLAGS_save} -L/usr/local/lib -L/usr/X11R6/lib/"
        LDFLAGS="${LDFLAGS_save}"
        ;;
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    esac
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    ;;
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  darwin*)
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    dnl Force gcc "-arch" flag
    ARCH_flag=""
    case "${host}" in
      i386*)
        ARCH_flag="-arch i386"
      ;;
      ppc64*)
        ARCH_flag="-arch ppc64"
      ;;
      ppc*)
        ARCH_flag="-arch ppc"
      ;;
      x86_64*)
        ARCH_flag="-arch x86_64"
      ;;
    esac

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    SYS=darwin
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    CFLAGS_save="${CFLAGS_save} -D_INTL_REDIRECT_MACROS ${ARCH_flag}"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="${CXXFLAGS_save} -D_INTL_REDIRECT_MACROS ${ARCH_flag}"; CXXFLAGS="${CXXFLAGS_save}"
    CPPFLAGS_save="${CPPFLAGS_save} ${ARCH_flag}"; CPPFLAGS="${CPPFLAGS_save}"
    OBJCFLAGS_save="${OBJCFLAGS_save} -D_INTL_REDIRECT_MACROS -std=gnu99 ${ARCH_flag}"; OBJCFLAGS="${OBJCFLAGS_save}"
    LDFLAGS_save="${LDFLAGS_save} -Wl,-headerpad_max_install_names ${ARCH_flag}"; LDFLAGS="${LDFLAGS_save}"
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    VLC_ADD_LDFLAGS([mkv mp4 motion], [-Wl,-framework,IOKit,-framework,CoreFoundation])
    VLC_ADD_LDFLAGS([libvlc vlc],[-Wl,-undefined,dynamic_lookup])
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    VLC_ADD_LDFLAGS([avcodec avformat access_avio swscale postproc i420_rgb_mmx x264],[-Wl,-read_only_relocs,suppress])
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    VLC_ADD_CFLAGS([motion],[-fconstant-cfstrings])
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    VLC_ADD_LDFLAGS([libvlccore],[-Wl,-framework,CoreFoundation])
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    AC_ARG_ENABLE(macosx-defaults,
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      AS_HELP_STRING([--enable-macosx-defaults],[Build the default configuration on Mac OS X (default enabled)]))
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    if test "x${enable_macosx_defaults}" != "xno"
    then
        echo ""
        echo "Building with Mac OS X defaults:"
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        with_macosx_version_min="10.5"
        echo "  Assuming --with-macosx-version-min=10.5"
        with_macosx_sdk="/Developer/SDKs/MacOSX${with_macosx_version_min}.sdk"
        echo "  Assuming --with-macosx-sdk=/Developer/SDKs/MacOSX${with_macosx_version_min}.sdk"
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        build_dir=`pwd`
        echo "  Assuming --prefix=${build_dir}/vlc_install_dir"
        ac_default_prefix="${build_dir}/vlc_install_dir"
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        enable_macosx="yes"
        echo "  Assuming --enable-macosx"
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        enable_faad="yes"
        echo "  Assuming --enable-faad"
        enable_flac="yes"
        echo "  Assuming --enable-flac"
        enable_theora="yes"
        echo "  Assuming --enable-theora"
        enable_shout="yes"
        echo "  Assuming --enable-shout"
        enable_vcdx="yes"
        echo "  Assuming --enable-vcdx"
        enable_caca="yes"
        echo "  Assuming --enable-caca"
        enable_ncurses="yes"
        echo "  Assuming --enable-ncurses"
        enable_twolame="yes"
        echo "  Assuming --enable-twolame"
        enable_realrtsp="yes"
        echo "  Assuming --enable-realrtsp"
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        enable_libass="yes"
        echo "  Assuming --enable-libass"
        enable_asademux="yes"
        echo "  Assuming --enable-asademux"
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        enable_skins2="no"
        echo "  Assuming --disable-skins2"
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        enable_xcb="no"
        echo "  Assuming --disable-xcb"
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    fi
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    dnl
    dnl  Check for Mac OS X SDK settings
    dnl
    AC_ARG_WITH(macosx-sdk,
       [  --with-macosx-sdk=DIR   compile using the SDK in DIR])
    if test "${with_macosx_sdk}" != "" ; then
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        CPP="${CPP} -isysroot ${with_macosx_sdk}"
        CC="${CC} -isysroot ${with_macosx_sdk}"
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        CXX="${CXX} -isysroot ${with_macosx_sdk}"
        OBJC="${OBJC} -isysroot ${with_macosx_sdk}"
        LD="${LD} -syslibroot ${with_macosx_sdk}"
    fi
    AC_ARG_WITH(macosx-version-min,
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       [  --with-macosx-version-min=VERSION compile for MacOSX VERSION and above])
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    if test "${with_macosx_version_min}" != "" ; then
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        CPP="${CPP} -mmacosx-version-min=${with_macosx_version_min}"
        CC="${CC} -mmacosx-version-min=${with_macosx_version_min}"
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        CXX="${CXX} -mmacosx-version-min=${with_macosx_version_min}"
        OBJC="${OBJC} -mmacosx-version-min=${with_macosx_version_min}"
        LD="${LD} -macosx_version_min=${with_macosx_version_min}"
        CFLAGS_save="${CFLAGS_save} -DMACOSX_DEPLOYMENT_TARGET=${with_macosx_version_min}"; CFLAGS="${CFLAGS_save}"
        CXXFLAGS_save="${CXXFLAGS_save} -DMACOSX_DEPLOYMENT_TARGET=${with_macosx_version_min}"; CXXFLAGS="${CXXFLAGS_save}"
        OBJCFLAGS_save="${OBJCFLAGS_save} -DMACOSX_DEPLOYMENT_TARGET=${with_macosx_version_min}"; OBJCFLAGS="${OBJCFLAGS_save}"
        MACOSX_DEPLOYMENT_TARGET=${with_macosx_version_min}
        export MACOSX_DEPLOYMENT_TARGET
    fi
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    ;;
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  *mingw32* | *cygwin* | *wince* | *mingwce*)
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    AC_CHECK_TOOL(WINDRES, windres, :)
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    AC_CHECK_TOOL(OBJCOPY, objcopy, :)
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    case "${host_os}" in
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      *wince* | *mingwce* | *mingw32ce*)
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        SYS=mingwce
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        dnl Sadly CeGCC still needs non-wince macros
        AC_DEFINE([_WIN32_WINNT], 0x0501, [Define to '0x0500' for Windows 2000 APIs.])
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        ;;
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      *mingw32*)
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        SYS=mingw32
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        AC_DEFINE([_WIN32_WINNT], 0x0500, [Define to '0x0500' for Windows 2000 APIs.])
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        ;;
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      *cygwin*)
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        dnl Check if we are using the mno-cygwin mode in which case we are
        dnl actually dealing with a mingw32 compiler.
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        AC_DEFINE([_WIN32_WINNT], 0x0500, [Define to '0x0500' for Windows 2000 APIs.])
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        AC_EGREP_CPP(yes,
            [#ifdef WIN32
             yes
             #endif],
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            SYS=mingw32, AC_MSG_ERROR([VLC requires -mno-cygwin]))
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        ;;
    esac

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    if test "${SYS}" = "mingw32"; then
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        # add ws2_32 for closesocket, select, recv
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        VLC_ADD_LIBS([libvlccore],[-lws2_32 -lnetapi32 -lwinmm])
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        VLC_ADD_LDFLAGS([vlc],[-mwindows])
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        VLC_ADD_LIBS([activex mozilla win32text],[-lgdi32])
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        VLC_ADD_LIBS([cdda vcdx sdl_image aout_sdl vout_sdl],[-lwinmm])
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        VLC_ADD_LIBS([access_http access_mms access_udp access_tcp access_ftp access_rtmp access_output_udp access_output_shout access_output_rtmp sap slp oldhttp stream_out_standard stream_out_rtp stream_out_raop vod_rtsp access_realrtsp rtp oldtelnet oldrc netsync gnutls growl_udp flac ts audioscrobbler lua remoteosd zvbi audiobargraph_a netsync],[-lws2_32])
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        VLC_ADD_LIBS([filesystem], [-lshlwapi])
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        dnl
        dnl DEP and ASLR options
        dnl
        AC_ARG_ENABLE(peflags,
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          [  --enable-peflags        peflags use (default enabled on Windows)])
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        if test "${enable_peflags}" != "no"
        then
          AC_CHECK_TOOL(PEFLAGS, peflags, :)
        fi
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        AC_CHECK_PROGS(U2D, [unix2dos todos], unix2dos)
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    fi
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    if test "${SYS}" = "mingwce"; then
        # add ws2 for closesocket, select, recv
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        VLC_ADD_LIBS([libvlccore access_http access_mms access_udp access_tcp access_ftp access_rtmp access_output_udp access_output_rtmp sap oldhttp netsync audioscrobbler growl rtp stream_out_rtp remoteosd ts oldtelnet audiobargraph_a netsync],[-lws2])
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        VLC_ADD_LIBS([libvlccore],[-lmmtimer])
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   fi
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    ;;
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  *nto*)
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    SYS=nto
    ;;
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  solaris*)
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    SYS=solaris
    ;;
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  hpux*)
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    SYS=hpux
    ;;
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  beos)
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    SYS=beos
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    CFLAGS_save="${CFLAGS_save} -Wno-multichar"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="${CXXFLAGS_save} -Wno-multichar"; CXXFLAGS="${CXXFLAGS_save}"
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    VLC_ADD_CXXFLAGS([beos],[])
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    VLC_ADD_LIBS([vlc libvlccore logger],[-lbe])
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    VLC_ADD_LIBS([dvdnav dvdread],[-ldl])
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    VLC_ADD_LIBS([filesystem],[-lpoll])
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    LDFLAGS_save="${LDFLAGS_save} -lintl"; LDFLAGS="${LDFLAGS_save}"
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    dnl Check for BONE
    if test -f /boot/beos/system/lib/libbind.so; then
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        VLC_ADD_LIBS([filesystem access_ftp access_mms access_output_udp oldtelnet netsync sap libvlccore growl_udp],[-lbind -lsocket])
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    else
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        VLC_ADD_LIBS([filesystem access_ftp access_mms access_output_udp oldtelnet netsync sap libvlccore growl_udp],[-lnet])
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    fi
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    ;;
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  *)
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    SYS="${host_os}"
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    ;;
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esac
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AM_CONDITIONAL(HAVE_BEOS, test "${SYS}" = "beos")
AM_CONDITIONAL(HAVE_DARWIN, test "${SYS}" = "darwin")
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AM_CONDITIONAL(HAVE_LINUX, [test "${SYS}" = "linux"])
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AM_CONDITIONAL(HAVE_WIN32, test "${SYS}" = "mingw32")
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AM_CONDITIONAL(HAVE_WINCE, test "${SYS}" = "mingwce")
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AM_CONDITIONAL(USE_PEFLAGS, [test "${enable_peflags}" = "yes"])
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dnl
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dnl Sadly autoconf doesn't think about testing foo.exe when ask to test
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dnl for program foo on win32

case "${build_os}" in
    cygwin|msys)
        ac_executable_extensions=".exe"
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    ;;
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    *)
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    ;;
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esac

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dnl
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dnl  Libtool
dnl  It's very bad, but our former custom system was worst
dnl  -- Courmisch
dnl
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dnl override platform specific check for dependent libraries
dnl otherwise libtool linking of shared libraries will
dnl fail on anything other than pass_all.
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AC_CACHE_VAL(lt_cv_deplibs_check_method,
    [lt_cv_deplibs_check_method=pass_all])
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AC_DISABLE_STATIC
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dnl AC_DISABLE_FAST_INSTALL
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AC_LIBTOOL_DLOPEN
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AC_LIBTOOL_WIN32_DLL
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m4_undefine([AC_PROG_F77])
m4_defun([AC_PROG_F77],[])
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AC_PROG_LIBTOOL

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m4_undefine([AC_DEPLIBS_CHECK_METHOD])
m4_defun([AC_DEPLIBS_CHECK_METHOD],[])

lt_cv_deplibs_check_method=pass_all

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AS_IF([test "${enable_shared}" = "no"], [
  AC_MSG_ERROR([VLC is based on plugins. Shared libraries cannot be disabled.])
])
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dnl
dnl Gettext stuff
dnl
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AM_GNU_GETTEXT_VERSION([0.17])
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AM_GNU_GETTEXT([external])
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VLC_ADD_LIBS([libvlccore vlc], [${LTLIBINTL}])
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dnl
dnl Iconv stuff
dnl
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AM_ICONV
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VLC_ADD_CFLAGS([libvlccore],[${INCICONV}])
VLC_ADD_LIBS([libvlccore],[${LTLIBICONV}])
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dnl Check for broken versions of mingw-runtime compatability library
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AS_IF([test "${SYS}" = "mingw32" -o "${SYS}" = "mingwce"], [
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    AC_MSG_CHECKING(for broken mingw-runtime)
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    AC_PREPROC_IFELSE([
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#include <_mingw.h>
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#if (__MINGW32_MAJOR_VERSION == 3) && (__MINGW32_MINOR_VERSION < 15)
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# error Attempting to use mingw-runtime with broken vsnprintf support
#endif
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], [
        AC_MSG_RESULT([ok])
], [
        AC_MSG_RESULT([present])
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        AC_MSG_ERROR([LibVLC requires mingw-runtime version 3.15 or higher!])
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])
    dnl force use of mingw provided c99 *printf over msvcrt
    CPPFLAGS="${CPPFLAGS} -D__USE_MINGW_ANSI_STDIO=1"
    CPPFLAGS_save="${CPPFLAGS_save} -D__USE_MINGW_ANSI_STDIO=1"
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])
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dnl Check for the need to include the mingwex lib for mingw32
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if test "${SYS}" = "mingw32"
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then
    AC_CHECK_LIB(mingwex,opendir,
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        AC_CHECK_LIB(mingw32,opendir,,
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            [VLC_ADD_LIBS([libvlccore],[-lmingwex])])
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    )
fi

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dnl Check for fnative-struct or mms-bitfields support for mingw32
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if test "${SYS}" = "mingw32"
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then
    AC_CACHE_CHECK([if \$CC accepts -mms-bitfields],
        [ac_cv_c_mms_bitfields],
        [CFLAGS="${CFLAGS_save} -mms-bitfields"
         AC_TRY_COMPILE([],,ac_cv_c_mms_bitfields=yes, ac_cv_c_mms_bitfields=no)])
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    if test "${ac_cv_c_mms_bitfields}" != "no"; then
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        CFLAGS_save="${CFLAGS_save} -mms-bitfields";
        CXXFLAGS_save="${CXXFLAGS_save} -mms-bitfields";
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    else
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        AC_CACHE_CHECK([if \$CC accepts -fnative-struct],
            [ac_cv_c_fnative_struct],
            [CFLAGS="${CFLAGS_save} -fnative-struct"
             AC_TRY_COMPILE([],,ac_cv_c_fnative_struct=yes, ac_cv_c_fnative_struct=no)])
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        if test "${ac_cv_c_fnative_struct}" != "no"; then
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            CFLAGS_save="${CFLAGS_save} -fnative-struct";
            CXXFLAGS_save="${CXXFLAGS_save} -fnative-struct";
        fi
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    fi

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    CFLAGS="${CFLAGS_save}"; CXXFLAGS="${CXXFLAGS_save}"
fi

dnl Check for fvtable-thunks support for mingw32
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if test "${SYS}" = "mingw32" -a "${CXX}" != ""
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then
AC_LANG_PUSH(C++)
    AC_CACHE_CHECK([if \$CXX accepts -fvtable-thunks],
        [ac_cv_cxx_fvtable_thunks],
        [CXXFLAGS="${CXXFLAGS_save} -Wall -Werror -fvtable-thunks"
         AC_TRY_COMPILE([],,ac_cv_cxx_fvtable_thunks=yes,
                        ac_cv_cxx_fvtable_thunks=no)])
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    if test "${ac_cv_cxx_fvtable_thunks}" = "yes"; then
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        CXXFLAGS_mingw32_special="-fvtable-thunks"
    fi

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    CXXFLAGS_save="${CXXFLAGS_save} ${CXXFLAGS_mingw32_special}"; CXXFLAGS="${CXXFLAGS_save}"
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AC_LANG_POP(C++)
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fi

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dnl
dnl Buggy glibc prevention. Purposedly not cached.
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dnl See sourceware.org bugs 5058 and 5443.
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dnl Ubuntu alone has 20 bug numbers for this...
dnl
AC_MSG_CHECKING(for buggy GNU/libc versions)
AC_PREPROC_IFELSE([
#include <limits.h>
#if defined (__GLIBC__) && (__GLIBC__ == 2) \
  && (__GLIBC_MINOR__ >= 5) && (__GLIBC_MINOR__ <= 7)
# error GNU/libc with dcgettext killer bug!
#endif
], [
  AC_MSG_RESULT([not present])
], [
  AC_MSG_RESULT([found])
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  AS_IF([test "x${enable_nls}" != "xno" || test "x${enable_mozilla}" != "xno"], [
    AC_MSG_ERROR([Buggy GNU/libc (version 2.5 - 2.7) present. VLC would crash; there is no viable
work-around for this. Check with your distribution vendor on how to update the
glibc run-time. Alternatively, build with --disable-nls --disable-mozilla and
be sure to not use LibVLC from other applications/wrappers.])
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  ], [
    AC_DEFINE(DISABLE_BUGGY_GLIBC_CHECK, 1, [Disables runtime check for buggy glibc.])
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  ])
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])

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dnl Plugin compilation stuff

VLC_LIBRARY_SUFFIX

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dnl The -DSYS_FOO flag
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CPPFLAGS_save="${CPPFLAGS_save} -DSYS_`echo ${SYS} | sed -e 's/-.*//' | tr 'abcdefghijklmnopqrstuvwxyz.' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`"; CPPFLAGS="${CPPFLAGS_save}"
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dnl Check for system libs needed
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need_libc=false
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dnl Check for usual libc functions
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AC_CHECK_FUNCS([ctime_r daemon fcntl fdopendir fork getenv getpwuid_r gettimeofday isatty lstat memalign openat posix_fadvise posix_madvise posix_memalign putenv setenv setlocale stricmp strnicmp tdestroy uselocale])
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AC_REPLACE_FUNCS([asprintf atof atoll getcwd getdelim getpid gmtime_r lldiv localtime_r nrand48 rewind strcasecmp strcasestr strdup strlcpy strncasecmp strndup strnlen strsep strtof strtok_r strtoll swab vasprintf])
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AC_CHECK_FUNCS(fdatasync,,
  [AC_DEFINE(fdatasync, fsync, [Alias fdatasync() to fsync() if missing.])
])
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dnl Check for non-standard system calls
558
AC_CHECK_FUNCS([accept4 dup3 eventfd fstatfs vmsplice])
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AH_BOTTOM([#include <vlc_fixups.h>])

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AC_CHECK_FUNCS(mmap, [VLC_ADD_PLUGIN([access_mmap])])
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SOCKET_LIBS=""
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AC_CHECK_FUNCS(connect,,[
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  AC_CHECK_LIB(socket,connect,[
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    VLC_ADD_LIBS([libvlccore cdda],-lsocket)
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    SOCKET_LIBS="-lsocket"
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  ])
])
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AC_SUBST(SOCKET_LIBS)
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AC_CHECK_FUNCS(send,,[
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  AC_CHECK_LIB(socket,send,[
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    VLC_ADD_LIBS([access_http access_mms access_udp access_tcp access_ftp access_rtmp sap access_output_udp access_output_rtmp stream_out_standard growl_udp remoteosd netsync],[-lsocket])
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  ])
])
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dnl Check for socklen_t
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AH_TEMPLATE(socklen_t, [Define to `int' if <sys/socket.h> does not define.])
AC_CACHE_CHECK([for socklen_t in sys/socket.h],
ac_cv_type_socklen_t,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
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[#include <sys/types.h>
#ifdef WIN32
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# include <winsock2.h>
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# include <ws2tcpip.h>
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#else
# include <sys/socket.h>
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#endif]], [[socklen_t len; len = 0;]])],
ac_cv_type_socklen_t=yes,
ac_cv_type_socklen_t=no)])
AS_IF([test "$ac_cv_type_socklen_t" = no],
 [AC_DEFINE(socklen_t, int)])
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dnl Check for struct sockaddr_storage
AH_TEMPLATE(sockaddr_storage, [Define to `sockaddr' if <sys/socket.h> does not define.])
AH_TEMPLATE(ss_family, [Define to `sa_family' if <sys/socket.h> does not define.])
AC_CACHE_CHECK([for struct sockaddr_storage], ac_cv_struct_sockaddr_storage,
  [AC_TRY_COMPILE(
    [#include <sys/types.h>
     #if defined( UNDER_CE )
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     # include <winsock2.h>
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     #elif defined( WIN32 )
     # include <winsock2.h>
     #else
     # include <sys/socket.h>
     #endif], [struct sockaddr_storage addr;],
     ac_cv_struct_sockaddr_storage=yes,
     ac_cv_struct_sockaddr_storage=no)])
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AS_IF([test "${ac_cv_struct_sockaddr_storage}" = no], [
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  AC_DEFINE(sockaddr_storage, sockaddr)
  AC_DEFINE(ss_family, sa_family)
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])
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dnl getaddrinfo, getnameinfo and gai_strerror check
618
dnl  -lnsl and -lsocket are needed on Solaris;
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dnl  we purposedly make the test fail on Windows
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LIBS_save="${LIBS}"
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AH_TEMPLATE(HAVE_GETADDRINFO, [Define to 1 if you have the `getaddrinfo' function.])
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AC_SEARCH_LIBS([getaddrinfo], [nsl], [AC_DEFINE(HAVE_GETADDRINFO)],, [${SOCKET_LIBS}])
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dnl NOTE: we assume getaddrinfo will be present if getnameinfo or gai_strerro
dnl are
LIBS="${LIBS_gai}"
AC_CHECK_FUNCS([getnameinfo gai_strerror])
LIBS="${LIBS_save}"

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AH_TEMPLATE(HAVE_ADDRINFO, [Define to 1 if <netdb.h> defines `struct addrinfo'.])
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AC_CHECK_TYPES([struct addrinfo],[AC_DEFINE(HAVE_ADDRINFO)],,
[#include <sys/types.h>
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#if defined( WIN32 ) || defined( UNDER_CE )
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# if defined(UNDER_CE) && defined(sockaddr_storage)
#  undef sockaddr_storage
# endif
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# include <winsock2.h>
# include <ws2tcpip.h>
#else
# include <netdb.h>
#endif])
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dnl Check for va_copy
AC_CACHE_CHECK([for va_copy], ac_cv_c_va_copy,
  AC_TRY_LINK(
    [#include <stdarg.h>],
    [va_list ap1, ap2; va_copy(ap1,ap2);],
    [ac_cv_c_va_copy="yes"],
    [ac_cv_c_va_copy="no"]))
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if test "${ac_cv_c_va_copy}" = "yes"; then
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  AC_DEFINE(HAVE_VA_COPY, 1, [Define if <stdarg.h> defines va_copy.])
fi
AC_CACHE_CHECK([for __va_copy], ac_cv_c___va_copy,
  AC_TRY_LINK(
    [#include <stdarg.h>],
    [va_list ap1, ap2; __va_copy(ap1,ap2);],
    [ac_cv_c___va_copy="yes"],
    [ac_cv_c___va_copy="no"]))
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if test "${ac_cv_c___va_copy}" = "yes"; then
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  AC_DEFINE(HAVE___VA_COPY, 1, [Define if <stdarg.h> defines __va_copy.])
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fi

663
AC_CHECK_FUNCS(inet_aton,,[
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  AC_CHECK_LIB(resolv,inet_aton,[
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    VLC_ADD_LIBS([libvlccore],[-lresolv])
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  ])
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])
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dnl FreeBSD has a gnugetopt library for this:
GNUGETOPT_LIBS=""
AC_CHECK_FUNC(getopt_long,, [
  AC_CHECK_LIB([gnugetopt],[getopt_long], [
    GNUGETOPT_LIBS="-lgnugetopt"
  ])
])
AC_SUBST(GNUGETOPT_LIBS)
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if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
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AC_CHECK_LIB(m,cos,[
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  VLC_ADD_LIBS([adjust wave ripple psychedelic gradient a52tofloat32 dtstofloat32 x264 goom visual panoramix rotate noise grain scene kate flac lua chorus_flanger],[-lm])
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])
AC_CHECK_LIB(m,pow,[
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  VLC_ADD_LIBS([avcodec avformat access_avio swscale postproc ffmpegaltivec i420_rgb faad twolame equalizer spatializer param_eq libvlccore freetype mod mpc dmo quicktime realvideo opengl],[-lm])
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])
AC_CHECK_LIB(m,sqrt,[
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  VLC_ADD_LIBS([headphone_channel_mixer normvol audiobargraph_a speex mono colorthres extract ball],[-lm])
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])
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AC_CHECK_LIB(m,ceil,[
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  VLC_ADD_LIBS([access_imem hotkeys mosaic swscale_omap],[-lm])
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])
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AC_CHECK_LIB(m,exp,[
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  VLC_ADD_LIBS([gaussianblur],[-lm])
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])
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AC_CHECK_LIB(m,round,[
  VLC_ADD_LIBS([dbus],[-lm])
])
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AC_CHECK_LIB(m,sqrtf,[
  VLC_ADD_LIBS([x264],[-lm])
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])
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fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"
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AC_CHECK_LIB(m,lrintf, [
  AC_DEFINE(HAVE_LRINTF, 1, [Define to 1 if you have the lrintf function])
  VLC_ADD_LIBS([skins2],[-lm])
])

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dnl Check for dynamic plugins
ac_cv_have_plugins=no

# HP-UX style
if test "${ac_cv_have_plugins}" = "no"; then
  AC_CHECK_HEADERS(dl.h)
  ac_cv_my_have_shl_load=no
  AC_CHECK_FUNC(shl_load,
   [ac_cv_my_have_shl_load=yes,
    AC_CHECK_LIB(dld, shl_load,
     [ac_cv_my_have_shl_load=yes
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      VLC_ADD_LIBS([libvlccore],[-ldld])])])
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  if test "${ac_cv_my_have_shl_load}" = "yes"; then
    AC_DEFINE(HAVE_DL_SHL_LOAD, 1, [Define if you have the shl_load API])
    ac_cv_have_plugins=yes
  fi
fi

# Win32 style
if test "${ac_cv_have_plugins}" = "no"; then
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  if test "${SYS}" = "mingw32" ; then
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    AC_CHECK_LIB(kernel32, main,
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     [VLC_ADD_LIBS([libvlccore],[-lkernel32])
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      AC_DEFINE(HAVE_DL_WINDOWS, 1, [Define if you have Windows' LoadLibrary])
      ac_cv_have_plugins=yes])
  fi
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fi

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# WinCE style
if test "${ac_cv_have_plugins}" = "no"; then
  if test "${SYS}" = "mingwce"; then
    AC_DEFINE(HAVE_DL_WINDOWS, 1, [Define if you have Windows' LoadLibrary])
    ac_cv_have_plugins=yes
  fi
fi

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# BeOS style
if test "${ac_cv_have_plugins}" = "no"; then
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  AC_CHECK_HEADERS(image.h)
  AC_CHECK_FUNCS(load_add_on,
   [AC_DEFINE(HAVE_DL_BEOS, 1, [Define if you have the BeOS dl])
    ac_cv_have_plugins=yes])
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fi

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# Only test for dlopen() if the others didn't work
752
LIBDL=""
753
if test "${ac_cv_have_plugins}" = "no" -o "${SYS}" = "darwin"; then
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  AC_CHECK_HEADERS(dlfcn.h sys/dl.h)
  ac_cv_my_have_dlopen=no
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  AC_CHECK_FUNC(dlopen, [
    ac_cv_my_have_dlopen=yes
  ], [
    AC_CHECK_LIB(dl, dlopen, [
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      ac_cv_my_have_dlopen=yes
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      LIBDL="-ldl"
    ], [
      AC_CHECK_LIB(svld, dlopen, [
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        ac_cv_my_have_dlopen=yes
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        LIBDL="-lsvld"
      ])
    ])
  ])
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  if test "${ac_cv_my_have_dlopen}" = "yes"; then
    AC_DEFINE(HAVE_DL_DLOPEN, 1, [Define if you have the dlopen API])
    ac_cv_have_plugins=yes
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    VLC_ADD_LIBS([libvlccore realvideo lua],[$LIBDL])
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  fi
fi
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AC_SUBST(LIBDL)
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777
if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
778
dnl Check for pthreads - borrowed from XMMS
779
THREAD_LIB=error
780
if test "${THREAD_LIB}" = "error"; then
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  AC_CHECK_LIB(pthread,main,THREAD_LIB="-lpthread")
782
fi
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if test "${THREAD_LIB}" = "error"; then
784
  AC_CHECK_LIB(pthreads,main,THREAD_LIB="-lpthreads")
785
fi
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if test "${THREAD_LIB}" = "error"; then
787
  AC_CHECK_LIB(c_r,main,THREAD_LIB="-lc_r")
788
fi
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if test "${THREAD_LIB}" = "error"; then
790
  AC_CHECK_FUNCS(pthread_mutex_lock)
791
  THREAD_LIB=""
792
fi
793

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VLC_ADD_LIBS([libvlccore libvlc vlc plugin],[${THREAD_LIB}])
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AC_CHECK_LIB(rt, clock_nanosleep, [
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  VLC_ADD_LIBS([libvlccore],[-lrt])
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  AC_DEFINE(HAVE_CLOCK_NANOSLEEP, 1, [Define to 1 if you have clock_nanosleep.])
], [
  dnl HP/UX port
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  AC_CHECK_LIB(rt,sem_init, [VLC_ADD_LIBS([libvlccore],[-lrt])])
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])
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have_nanosleep=false
AC_CHECK_FUNCS(nanosleep,have_nanosleep=:,[
  AC_CHECK_LIB(rt,nanosleep,
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    [VLC_ADD_LIBS([libvlccore],[-lrt]) have_nanosleep=:],
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    [AC_CHECK_LIB(posix4,nanosleep,
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        [VLC_ADD_LIBS([libvlccore],[-lposix4]) have_nanosleep=:])]
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  )
])
if ${have_nanosleep}; then
  AC_DEFINE(HAVE_NANOSLEEP, 1, [Define if nanosleep is available.])
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fi
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fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"
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817
dnl Check for misc headers
818
AC_MSG_CHECKING(for strncasecmp in strings.h)
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AC_EGREP_HEADER(strncasecmp,strings.h,[
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  AC_MSG_RESULT(yes)
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  AC_DEFINE(STRNCASECMP_IN_STRINGS_H, 1,
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            Define if <strings.h> defines strncasecmp.)],[
  AC_MSG_RESULT(no)])
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825
dnl Check for headers
826
AC_CHECK_HEADERS(getopt.h strings.h locale.h xlocale.h)
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AC_CHECK_HEADERS(fcntl.h sys/time.h sys/ioctl.h sys/stat.h sys/mount.h)
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AC_CHECK_HEADERS([arpa/inet.h netinet/in.h netinet/udplite.h sys/eventfd.h])
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AC_CHECK_HEADERS([net/if.h], [], [],
  [
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    #include <sys/types.h>
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    #include <sys/socket.h>
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  ])
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if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
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AC_CHECK_HEADERS(machine/param.h sys/shm.h)
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AC_CHECK_HEADERS([linux/version.h linux/dccp.h scsi/scsi.h linux/magic.h])
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AC_CHECK_HEADERS(syslog.h)
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fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"
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dnl LP64 adn LLP64 architectures had better define ssize_t by themselves...
AH_TEMPLATE(ssize_t, [Define to `int' if <stddef.h> does not define.])
AC_CHECK_TYPE(ssize_t,, [
  AC_DEFINE(ssize_t, int)
])

846
dnl Check for poll
847
AC_SEARCH_LIBS(poll, [poll], [AC_DEFINE(HAVE_POLL, 1, [Define to 1 if the OS is usabl... err, has poll().])], [
848
if test ${SYS} != "mingw32" -a ${SYS} != "mingwce"
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then
    AC_MSG_WARN([Your platform does not support poll(). VLC has it's own poll() implementation, but it is only intended to be used on Windows. VLC might crash or be insecure when you see this message. Either switch to an OS with a proper poll() implementation, or implement one for your OS in VLC])
fi
])
853

854 855
dnl Check for dirent
need_dirent=false
856
AC_CHECK_HEADERS(dirent.h,,[need_dirent=:])
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AM_CONDITIONAL(BUILD_DIRENT, ${need_dirent})

859
dnl Mac OS X and other OSes don't have declaration for nanosleep
860
if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
861
AC_MSG_CHECKING(for nanosleep in time.h)
862
AC_EGREP_HEADER(nanosleep,time.h,[
863
  AC_MSG_RESULT(yes)
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  AC_DEFINE(HAVE_DECL_NANOSLEEP, 1,
            Define if <time.h> defines nanosleep.)
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],[
  AC_MSG_RESULT(no)
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])
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fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"
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dnl Make sure we have timespecs
872
AC_MSG_CHECKING(for timespec in sys/time.h)
873
AC_EGREP_HEADER(timespec,sys/time.h,[
874
  AC_MSG_RESULT(yes)
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  AC_DEFINE(HAVE_STRUCT_TIMESPEC, 1,
            Define if <sys/time.h> defines struct timespec.)
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],[
  AC_MSG_RESULT(no)
879
])
880

881
dnl Check for threads library
882
if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
883
AC_CHECK_HEADERS(pthread.h)
884
fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"
885

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dnl It seems that autoconf detects pkg-config only during the first
dnl PKG_CHECK_MODULES from configure.ac - which makes sense. But in our case,
dnl it is nested within a conditional block, so it was not working right.
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dnl Make PKG_CONFIG_PATH precious so that it appears in the help and get saved
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AC_ARG_VAR(PKG_CONFIG_PATH,
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	   [Paths where to find .pc not at the default location])
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PKG_PROG_PKG_CONFIG()

894
dnl On some OS we need static linking 
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       AS_IF([test -n "${PKG_CONFIG}" ],[
	      AS_IF([test "${SYS}" = "mingw32" -o "${SYS}" = "mingwce" -o "${SYS}" = "darwin" ],[
	          PKG_CONFIG="${PKG_CONFIG} --static"
   	      ])
       ])
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dnl
dnl Check for zlib.h and -lz along with system -lminizip if available
dnl 
AC_CHECK_HEADERS(zlib.h, [ have_zlib=yes ], [ have_zlib=no ])
AM_CONDITIONAL(HAVE_ZLIB, [ test "${have_zlib}" = "yes" ])
if test "${have_zlib}" = "yes"
then
  VLC_ADD_LIBS([access_http gme mp4 skins2 sap mkv unzip zip],[-lz])
  PKG_CHECK_MODULES([MINIZIP], [minizip] , [ have_minizip=yes ], [
    AC_CHECK_HEADERS([unzip.h], [ 
      have_minizip=yes
      MINIZIP_LIBS="-lminizip -lz"
    ], [
      have_minizip=no
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      MINIZIP_CFLAGS="-I\\\${top_srcdir}/libs/unzip"
      MINIZIP_LIBS="\\\${top_builddir}/libs/unzip/libunzip.la"
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    ])
  ])
  VLC_ADD_CPPFLAGS([skins2],[$MINIZIP_CFLAGS])
  VLC_ADD_CFLAGS([zip],[$MINIZIP_CFLAGS])
  VLC_ADD_LIBS([skins2 zip],[$MINIZIP_LIBS])
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  VLC_ADD_PLUGIN([unzip zip])
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fi
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AM_CONDITIONAL(HAVE_MINIZIP, [ test "${have_minizip}" = "yes" ])
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dnl Check for dbus
AC_ARG_ENABLE(dbus,
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  [  --enable-dbus           Linux D-BUS message bus system (default enabled)])
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case "${SYS}" in
    linux*|*bsd*)
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if test "${enable_dbus}" != "no" -a "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"
934
then
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  dnl api stable dbus
  PKG_CHECK_MODULES(DBUS, dbus-1 >= 1.0.0,
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    [ AC_DEFINE( HAVE_DBUS, 1, [Define if you have the D-BUS library] )
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      VLC_ADD_LIBS([libvlccore],[$DBUS_LIBS])
      VLC_ADD_CFLAGS([libvlccore],[$DBUS_CFLAGS])
940
      dnl Check for dbus control interface
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        AC_ARG_ENABLE(dbus-control, [  --disable-dbus-control  D-BUS control interface (default enabled)])
942
        if test "${enable_dbus_control}" != "no"
943
        then
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          VLC_ADD_PLUGIN([dbus])
945
          VLC_ADD_LIBS([dbus],[$DBUS_LIBS])
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          VLC_ADD_CFLAGS([dbus],[$DBUS_CFLAGS])
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        fi
      dnl Check for Telepathy
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        AC_ARG_ENABLE(telepathy,
          AS_HELP_STRING([--enable-telepathy],[Telepathy Presence plugin through DBus(default enabled)]))
951
        if test "${enable_telepathy}" != "no"; then
952
          VLC_ADD_PLUGIN([telepathy])
953
          VLC_ADD_LIBS([telepathy],[$DBUS_LIBS])
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          VLC_ADD_CFLAGS([telepathy],[$DBUS_CFLAGS])
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        fi
        dnl Power Management Inhibiter
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        VLC_ADD_PLUGIN([inhibit])
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        VLC_ADD_LIBS([inhibit],[$DBUS_LIBS])
        VLC_ADD_CFLAGS([inhibit],[$DBUS_CFLAGS])
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    ],
    [AC_MSG_ERROR([Couldn't find DBus >= 1.0.0, install libdbus-dev ?])]
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  )
fi
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;;
esac
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dnl Check for ntohl, etc.
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AC_CACHE_CHECK([for ntohl in sys/param.h],
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    [ac_cv_c_ntohl_sys_param_h],
    [CFLAGS="${CFLAGS_save} -Wall -Werror"
     AC_TRY_COMPILE([#include <sys/param.h>],
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        [int meuh; ntohl(meuh);],
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        ac_cv_c_ntohl_sys_param_h=yes, ac_cv_c_ntohl_sys_param_h=no)])
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if test "${ac_cv_c_ntohl_sys_param_h}" != "no"; then
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    AC_DEFINE(NTOHL_IN_SYS_PARAM_H, 1, Define if <sys/param.h> defines ntohl.)
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fi
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CFLAGS="${CFLAGS_save}"
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RDC_PROG_CC_WFLAGS([all extra sign-compare undef pointer-arith bad-function-cast write-strings missing-prototypes volatile-register-var error-implicit-function-declaration])
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RDC_PROG_CC_FLAGS([-pipe])
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dnl Check for various optimization flags
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AC_CACHE_CHECK([if \$CC accepts -Os],
    [ac_cv_c_os],
    [CFLAGS="${CFLAGS_save} -Os"
     AC_TRY_COMPILE([],,ac_cv_c_os=yes, ac_cv_c_os=no)])
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if test "${ac_cv_c_os}" != "no"; then
    CFLAGS_OPTIM_SIZE="${CFLAGS_OPTIM_SIZE} -Os"
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else
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    AC_CACHE_CHECK([if \$CC accepts -O],
        [ac_cv_c_o],
        [CFLAGS="${CFLAGS_save} -O"
         AC_TRY_COMPILE([],,ac_cv_c_o=yes, ac_cv_c_o=no)])
    if test "${ac_cv_c_o}" != "no"; then
        if test "${ac_cv_c_o3}" = "no"; then
            CFLAGS_OPTIM_SIZE="${CFLAGS_OPTIM_SIZE} -O"
        fi
    fi
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fi

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AC_CACHE_CHECK([if \$CC accepts -O4],
    [ac_cv_c_o4],
    [CFLAGS="${CFLAGS_save} -O4"
     AC_TRY_COMPILE([],,ac_cv_c_o4=yes, ac_cv_c_o4=no)])
if test "${ac_cv_c_o4}" != "no" -a "x${enable_debug}" = "xno"; then
    CFLAGS_OPTIM_SPEED="${CFLAGS_OPTIM_SPEED} -O4"
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else
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    AC_CACHE_CHECK([if \$CC accepts -O3],
        [ac_cv_c_o3],
        [CFLAGS="${CFLAGS_save} -O3"
         AC_TRY_COMPILE([],,ac_cv_c_o3=yes, ac_cv_c_o3=no)])
    if test "${ac_cv_c_o3}" != "no" -a "x${enable_debug}" = "xno"; then
        CFLAGS_OPTIM_SPEED="${CFLAGS_OPTIM_SPEED} -O3"
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    else
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        AC_CACHE_CHECK([if \$CC accepts -O2],
            [ac_cv_c_o2],
            [CFLAGS="${CFLAGS_save} -O2"
             AC_TRY_COMPILE([],,ac_cv_c_o2=yes, ac_cv_c_o2=no)])
        if test "${ac_cv_c_o2}" != "no"; then
            CFLAGS_OPTIM_SPEED="${CFLAGS_OPTIM_SPEED} -O2"
        else
            AC_CACHE_CHECK([if \$CC accepts -O],
                [ac_cv_c_o],
                [CFLAGS="${CFLAGS_save} -O"
                 AC_TRY_COMPILE([],,ac_cv_c_o=yes, ac_cv_c_o=no)])
            if test "${ac_cv_c_o}" != "no"; then
                CFLAGS_OPTIM_SPEED="${CFLAGS_OPTIM_SPEED} -O"
            fi
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        fi
    fi
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fi

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AC_CACHE_CHECK([if \$CC accepts -O0],
    [ac_cv_c_o0],
    [CFLAGS="${CFLAGS_save} -O0"
     AC_TRY_COMPILE([],,ac_cv_c_o0=yes, ac_cv_c_o0=no)])
if test "${ac_cv_c_o0}" != "no"; then
    CFLAGS_NOOPTIM="${CFLAGS_NOOPTIM} -O0"
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fi

dnl Check for -ffast-math
AC_CACHE_CHECK([if \$CC accepts -ffast-math],
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    [ac_cv_c_fast_math],
    [CFLAGS="${CFLAGS_save} -ffast-math"
     AC_TRY_COMPILE([],,ac_cv_c_fast_math=yes, ac_cv_c_fast_math=no)])
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if test "${ac_cv_c_fast_math}" != "no"; then
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    CFLAGS_OPTIM_SPEED="${CFLAGS_OPTIM_SPEED} -ffast-math"
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fi

dnl Check for -funroll-loops
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dnl Disabled on BeOS because BeOS' gcc is buggy and may crash with it
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if test "${SYS}" != "beos"
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then
  AC_CACHE_CHECK([if \$CC accepts -funroll-loops],
      [ac_cv_c_unroll_loops],
      [CFLAGS="${CFLAGS_save} -funroll-loops"
       AC_TRY_COMPILE([],,ac_cv_c_unroll_loops=yes, ac_cv_c_unroll_loops=no)])
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  if test "${ac_cv_c_unroll_loops}" != "no"; then
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      CFLAGS_OPTIM_SPEED="${CFLAGS_OPTIM_SPEED} -funroll-loops"
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  fi
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fi

dnl Check for -fomit-frame-pointer
AC_CACHE_CHECK([if \$CC accepts -fomit-frame-pointer],
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    [ac_cv_c_omit_frame_pointer],
    [CFLAGS="${CFLAGS_save} -fomit-frame-pointer"
     AC_TRY_COMPILE([],,ac_cv_c_omit_frame_pointer=yes, ac_cv_c_omit_frame_pointer=no)])
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if test "${ac_cv_c_omit_frame_pointer}" != "no"; then
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 if test "${SYS}" != "darwin"; then
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    CFLAGS_OPTIM_NODEBUG="${CFLAGS_OPTIM_NODEBUG} -fomit-frame-pointer"
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 else
    dnl On darwin we explicitely disable it.
    CFLAGS_OPTIM_NODEBUG="${CFLAGS_OPTIM_NODEBUG} -fno-omit-frame-pointer"
 fi
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fi

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dnl Check for Darwin plugin linking flags
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AC_CACHE_CHECK([if \$CC accepts -bundle -undefined error],
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    [ac_cv_ld_darwin],
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    [CFLAGS="${CFLAGS_save} -bundle -undefined error"
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     AC_TRY_COMPILE([],,ac_cv_ld_darwin=yes, ac_cv_ld_darwin=no)])
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if test "${ac_cv_ld_darwin}" != "no"; then
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    VLC_ADD_LDFLAGS([plugin],[-bundle -undefined error])
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fi
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dnl Checks for __attribute__(aligned()) directive
AC_CACHE_CHECK([__attribute__ ((aligned ())) support],
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    [ac_cv_c_attribute_aligned],
    [ac_cv_c_attribute_aligned=0
        CFLAGS="${CFLAGS_save} -Werror"
    for ac_cv_c_attr_align_try in 2 4 8 16 32 64; do
        AC_TRY_COMPILE([],
        [static char c __attribute__ ((aligned(${ac_cv_c_attr_align_try}))) = 0; return c;],
        [ac_cv_c_attribute_aligned="${ac_cv_c_attr_align_try}"])
    done
        CFLAGS="${CFLAGS_save}"])
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if test "${ac_cv_c_attribute_aligned}" != "0"; then
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    AC_DEFINE_UNQUOTED([ATTRIBUTE_ALIGNED_MAX],
        [${ac_cv_c_attribute_aligned}],[Maximum supported data alignment])
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fi

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dnl Check for __attribute__((packed))
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AC_CACHE_CHECK([for __attribute__((packed))],
  [ac_cv_c_attribute_packed],
  [ac_cv_c_attribute_packed=no
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   AC_TRY_COMPILE(, [struct __attribute__((__packed__)) foo { int a; } b; (void)b;],
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                    [ac_cv_c_attribute_packed=yes])])
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if test "${ac_cv_c_attribute_packed}" != "no"; then
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  AC_DEFINE(HAVE_ATTRIBUTE_PACKED, 1, Support for __attribute__((packed)) for structs)
fi

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dnl
dnl  Check the CPU
dnl
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case "${host_cpu}" in
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  "")
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    ARCH=unknown
    ;;
  *)
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    ARCH="${host_cpu}"
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    ;;
esac

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dnl Check for backtrace() support
AC_CHECK_HEADERS(execinfo.h)
AC_CHECK_FUNCS(backtrace)

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dnl
dnl  Enable profiling
dnl
AC_ARG_ENABLE(gprof,
[  --enable-gprof          gprof profiling (default disabled)])
AC_ARG_ENABLE(cprof,
[  --enable-cprof          cprof profiling (default disabled)])
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test "${enable_gprof}" != "yes" && enable_gprof="no"
test "${enable_cprof}" != "yes" && enable_cprof="no"
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dnl
dnl  default modules
dnl
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ALIASES="${ALIASES} cvlc rvlc"
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dnl
dnl Some plugins aren't useful on some platforms
dnl
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if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
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    VLC_ADD_PLUGIN([dynamicoverlay])
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elif test "${SYS}" != "mingwce"; then
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    VLC_ADD_PLUGIN([access_smb dmo globalhotkeys])
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    VLC_ADD_LIBS([dmo],[-lole32 -luuid])
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fi
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if test "${SYS}" = "darwin"; then
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    VLC_ADD_LDFLAGS([quartztext],[-Wl,-framework,ApplicationServices])
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fi
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dnl
dnl  Accelerated modules
dnl
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EXTEND_HELP_STRING([Optimization options:])
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dnl  Check for fully working MMX intrinsics
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dnl  We need support for -mmmx, we need <mmintrin.h>, and we also need a
dnl  working compiler (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23963)
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AC_ARG_ENABLE(mmx,
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1165
[  --disable-mmx           disable MMX optimizations (default auto)],,[
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  case "${host_cpu}" in
    i?86|x86_64)
      enable_mmx="yes"
      ;;
    *)
      enable_mmx="no"
      ;;
  esac
])
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have_mmx="no"
have_mmxext="no"
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AS_IF([test "${enable_mmx}" != "no"], [
  ARCH="${ARCH} mmx"

  AC_CACHE_CHECK([if $CC groks MMX intrinsics],
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    [ac_cv_c_mmx_intrinsics],
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    [CFLAGS="${CFLAGS_save} -O -mmmx"
     AC_TRY_COMPILE([#include <mmintrin.h>
                     #include <stdint.h>
                     uint64_t frobzor;],
                    [__m64 a, b, c;
                     a = b = c = (__m64)frobzor;
                     a = _mm_slli_pi16(a, 3);
                     a = _mm_adds_pi16(a, b);
                     c = _mm_srli_pi16(c, 8);
                     c = _mm_slli_pi16(c, 3);
                     b = _mm_adds_pi16(b, c);
                     a = _mm_unpacklo_pi8(a, b);
                     frobzor = (uint64_t)a;],
                    [ac_cv_c_mmx_intrinsics=yes],
                    [ac_cv_c_mmx_intrinsics=no])])
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  AS_IF([test "${ac_cv_c_mmx_intrinsics}" != "no"], [
    AC_DEFINE(HAVE_MMX_INTRINSICS, 1,
              [Define to 1 if MMX intrinsics are available.])
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    MMX_CFLAGS="-mmmx"