configure.ac

dnl Autoconf settings for vlc

AC_COPYRIGHT([Copyright 2002-2011 the VideoLAN team])

AC_INIT(vlc, 1.2.0-git)
VERSION_MAJOR="1"
VERSION_MINOR="2"
VERSION_REVISION="0"
VERSION_EXTRA="-git"
PKGDIR="vlc"
AC_SUBST(PKGDIR)

CONFIGURE_LINE="`echo "$0 $ac_configure_args" | sed -e 's/\\\/\\\\\\\/g'`"
CODENAME="Twoflower"
COPYRIGHT_YEARS="1996-2011"

AC_CONFIG_SRCDIR(src/libvlc.c)
AC_CONFIG_AUX_DIR(autotools)
AC_CONFIG_MACRO_DIR(m4)
AC_CONFIG_LIBOBJ_DIR(compat)
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
AC_PRESERVE_HELP_ORDER

AM_INIT_AUTOMAKE(tar-ustar color-tests)
AM_CONFIG_HEADER(config.h)

# Disable with "./configure --disable-silent-rules" or "make V=1"
AM_SILENT_RULES([yes])

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"],
    [enable_maintainer_mode="yes"])
AM_MAINTAINER_MODE

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

dnl
dnl  Save *FLAGS
dnl
VLC_SAVE_FLAGS

dnl
dnl Check for tools
dnl
AC_PROG_CC_C99
AC_USE_SYSTEM_EXTENSIONS
AC_DEFINE([_FORTIFY_SOURCE], 2, [Define to '2' to get glibc warnings.])

AM_PROG_CC_C_O
AC_PROG_CXX
AC_PROG_CPP
AC_PROG_OBJC
_AM_DEPENDENCIES([OBJC])
AC_PROG_EGREP
AC_PROG_MAKE_SET
AC_PROG_INSTALL
AM_PROG_AS

dnl Find the right ranlib, even when cross-compiling
AC_CHECK_TOOL(RANLIB, ranlib, :)
AC_CHECK_TOOL(STRIP, strip, :)
AC_CHECK_TOOL(AR, ar, :)
AC_CHECK_TOOL(LD, ld, :)
AC_CHECK_TOOL(DLLTOOL, dlltool, :)

dnl Check for compiler properties
AC_C_CONST
AC_C_INLINE
AC_C_RESTRICT

dnl Extend the --help string at the current spot.
AC_DEFUN([EXTEND_HELP_STRING], [m4_divert_once([HELP_ENABLE], [$1])])

dnl Allow binary package maintainer to pass a custom string to avoid
dnl cache problem
AC_ARG_WITH(binary-version,
    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])
])

dnl Check how we are asked to build
AS_IF([test "${enable_shared}" = "no" -a "${enable_vlc}" != "no"], [
  AC_MSG_ERROR([VLC is based on plugins. Shared libraries cannot be disabled.])
])

AC_ARG_ENABLE(static-modules,
   [  --enable-static-modules  Allow module to be linked statically. This produces a non working vlc.])  
AS_IF([test "${enable_static_modules}" = yes], [
   enable_shared="no"
   enable_static="yes"
   VLC_DEFAULT_PLUGIN_TYPE="builtin"
   AS_IF([test "${enable_vlc}" != "no"],
     [AC_MSG_WARN([Building modules as static. VLC will not work.])])
], [
   VLC_DEFAULT_PLUGIN_TYPE="plugin"
])

AC_SUBST(VLC_DEFAULT_PLUGIN_TYPE)

dnl
dnl  Check for the contrib directory
dnl
AC_ARG_WITH(contrib,
    [  --without-contrib       do not use the libraries in CONTRIB_DIR],[],[])
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"], [
      topdir="`dirname $0`"
      if test "`echo \"$topdir\" | cut -c 1`" != "/"; then
         topdir="`pwd`/$topdir"
      fi
      CONTRIB_DIR="${topdir}/extras/contrib/hosts/${host}"
      if ! test -d "$CONTRIB_DIR"
      then
        gccmachine=`$CC -dumpmachine`
        CONTRIB_DIR="${topdir}/extras/contrib/hosts/${gccmachine}"
      fi
  ])
  AC_MSG_CHECKING([for libs in ${CONTRIB_DIR}])
  AS_IF([test -d "${CONTRIB_DIR}/lib"],[
    AC_MSG_RESULT([yes])
    AC_SUBST(CONTRIB_DIR)
    export PATH=${CONTRIB_DIR}/bin:$PATH
    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"
    if test "$build" = "$host" -o "$PKG_CONFIG_LIBDIR"; then
        export PKG_CONFIG_PATH="${CONTRIB_DIR}/lib/pkgconfig:$PKG_CONFIG_PATH"
    else
        export PKG_CONFIG_LIBDIR="${CONTRIB_DIR}/lib/pkgconfig"
    fi
    LDFLAGS="${LDFLAGS} -L${CONTRIB_DIR}/lib"
    LDFLAGS_save="${LDFLAGS_save} -L${CONTRIB_DIR}/lib"

    if test "${SYS}" = "darwin"; then
      export LD_LIBRARY_PATH="${CONTRIB_DIR}/lib:$LD_LIBRARY_PATH"
      export DYLD_LIBRARY_PATH="${CONTRIB_DIR}/lib:$DYLD_LIBRARY_PATH"
    fi
  ],[
    AC_MSG_RESULT([no])
    CONTRIB_DIR=""
  ])
])

dnl
dnl  Set default values
dnl
LDFLAGS_vlc="${LDFLAGS}"

dnl
dnl  Check the operating system
dnl
HAVE_ANDROID="0"
HAVE_WIN64="0"
case "${host_os}" in
  "")
    SYS=unknown
    ;;
  linux*)
    SYS=linux
    AC_TRY_COMPILE([],[#ifndef __ANDROID__
                       # error "Not compiling for Android"
                       #endif],
                   [HAVE_ANDROID="1"])
    ;;
  bsdi*)
    SYS=bsdi
    CFLAGS_save="${CFLAGS_save} -pthread"; CFLAGS="${CFLAGS_save}"
    VLC_ADD_LIBS([vcd cdda vcdx],[-ldvd])
    ;;
  *bsd*)
    SYS="${host_os}"
    CFLAGS_save="${CFLAGS_save} -pthread"; CFLAGS="${CFLAGS_save}"
    case "${host_os}" in
      freebsd*)
        CPPFLAGS_save="${CPPFLAGS_save} -I/usr/local/include"
        CPPFLAGS="${CPPFLAGS_save}"
        LDFLAGS_save="${LDFLAGS_save} -L/usr/local/lib"
        LDFLAGS="${LDFLAGS_save}"
        ;;
      openbsd*)
        CPPFLAGS_save="${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}"
        ;;
    esac
    ;;
  darwin*)

    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

    SYS=darwin
    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}"
    VLC_ADD_LDFLAGS([mkv mp4 motion], [-Wl,-framework,IOKit,-framework,CoreFoundation])
    VLC_ADD_LDFLAGS([libvlc vlc],[-Wl,-undefined,dynamic_lookup])
    VLC_ADD_LDFLAGS([avcodec avformat access_avio swscale postproc i420_rgb_mmx x264],[-Wl,-read_only_relocs,suppress])
    VLC_ADD_CFLAGS([motion],[-fconstant-cfstrings])
    VLC_ADD_LDFLAGS([libvlccore],[-Wl,-framework,CoreFoundation])
    AC_ARG_ENABLE(macosx-defaults,
      AS_HELP_STRING([--enable-macosx-defaults],[Build the default configuration on Mac OS X (default enabled)]))
    if test "x${enable_macosx_defaults}" != "xno"
    then
        echo ""
        echo "Building with Mac OS X defaults:"
        build_dir=`pwd`
        echo "  Assuming --prefix=${build_dir}/vlc_install_dir"
        ac_default_prefix="${build_dir}/vlc_install_dir"
        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"
        enable_libass="yes"
        echo "  Assuming --enable-libass"

        enable_skins2="no"
        echo "  Assuming --disable-skins2"
        enable_xcb="no"
        echo "  Assuming --disable-xcb"
    fi
    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 "${with_macosx_sdk}" != "" ; then
        CPP="${CPP} -isysroot ${with_macosx_sdk}"
        CC="${CC} -isysroot ${with_macosx_sdk}"
        CXX="${CXX} -isysroot ${with_macosx_sdk}"
        OBJC="${OBJC} -isysroot ${with_macosx_sdk}"
        LD="${LD} -syslibroot ${with_macosx_sdk}"
    else
        echo "  No desired SDK version given, falling back to 10.5"
        CPP="${CPP} -isysroot /Developer/SDKs/MacOSX10.5.sdk"
        CC="${CC} -isysroot /Developer/SDKs/MacOSX10.5.sdk"
        CXX="${CXX} -isysroot /Developer/SDKs/MacOSX10.5.sdk"
        OBJC="${OBJC} -isysroot /Developer/SDKs/MacOSX10.5.sdk"
        LD="${LD} -syslibroot /Developer/SDKs/MacOSX10.5.sdk"
        with_macosx_version_min="10.5"
        echo "  Assuming --with-macosx-version-min=10.5"
    fi
    AC_ARG_WITH(macosx-version-min,
       [  --with-macosx-version-min=VERSION compile for MacOSX VERSION and above])
    if test "${with_macosx_version_min}" != "" ; then
        CPP="${CPP} -mmacosx-version-min=${with_macosx_version_min}"
        CC="${CC} -mmacosx-version-min=${with_macosx_version_min}"
        CXX="${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
    ;;
  *mingw32* | *cygwin* | *wince* | *mingwce*)
    AC_CHECK_TOOL(WINDRES, windres, :)
    AC_CHECK_TOOL(OBJCOPY, objcopy, :)

    case "${host_os}" in
      *wince* | *mingwce* | *mingw32ce*)
        SYS=mingwce
        dnl Sadly CeGCC still needs non-wince macros
        AC_DEFINE([_WIN32_WINNT], 0x0501, [Define to '0x0500' for Windows 2000 APIs.])
        ;;
      *mingw32*)
        SYS=mingw32
        AC_DEFINE([_WIN32_WINNT], 0x0501, [Define to '0x0500' for Windows XP APIs.])
        ;;
      *cygwin*)
        dnl Check if we are using the mno-cygwin mode in which case we are
        dnl actually dealing with a mingw32 compiler.
        AC_DEFINE([_WIN32_WINNT], 0x0501, [Define to '0x0501' for Windows XP APIs.])
        AC_EGREP_CPP(yes,
            [#ifdef WIN32
             yes
             #endif],
            SYS=mingw32, AC_MSG_ERROR([VLC requires -mno-cygwin]))
        ;;
    esac

    if test "${SYS}" = "mingw32"; then
        # add ws2_32 for closesocket, select, recv
        VLC_ADD_LIBS([libvlccore],[-lws2_32 -lnetapi32 -lwinmm])
        VLC_ADD_LDFLAGS([vlc],[-mwindows])
        VLC_ADD_LIBS([win32text],[-lgdi32])
        VLC_ADD_LIBS([cdda vcdx sdl_image aout_sdl vout_sdl],[-lwinmm])
        VLC_ADD_LIBS([access_http access_mms access_udp access_tcp access_ftp access_rtmp access_output_udp access_output_shout access_output_rtmp sap stream_out_standard stream_out_select stream_out_rtp stream_out_raop vod_rtsp access_realrtsp rtp oldrc netsync gnutls growl_udp flac ts audioscrobbler lua remoteosd zvbi audiobargraph_a netsync],[-lws2_32])
        VLC_ADD_LIBS([filesystem], [-lshlwapi])
        dnl
        dnl DEP and ASLR options
        dnl
        AC_ARG_ENABLE(peflags,
          [  --enable-peflags        peflags use (default enabled on Windows)])
        if test "${enable_peflags}" != "no" ; then
          AC_PATH_TOOL(PEFLAGS, peflags, :)
        fi
        AC_CHECK_PROGS(U2D, [unix2dos todos], unix2dos)
        ac_default_prefix="`pwd`/_win32"
        DESTDIR="`pwd`/_win32/"

        dnl
        dnl NSIS Installer prefix and WIN64
        dnl
        case "${host}" in
            amd64*|i686-w64*|x86_64*)
                HAVE_WIN64="1"
                PROGRAMFILES="PROGRAMFILES64"
            ;;
            *)
                PROGRAMFILES="PROGRAMFILES"
            ;;
        esac
        AC_SUBST(PROGRAMFILES)

    fi
    if test "${SYS}" = "mingwce"; then
        # add ws2 for closesocket, select, recv
        VLC_ADD_LIBS([libvlccore access_http access_mms access_udp access_tcp access_ftp access_rtmp access_output_udp access_output_rtmp sap netsync audioscrobbler growl rtp stream_out_standard stream_out_select stream_out_rtp remoteosd ts audiobargraph_a netsync],[-lws2])
        VLC_ADD_LIBS([libvlccore],[-lmmtimer])
        AC_CHECK_PROGS(U2D, [unix2dos todos], unix2dos)
        ac_default_prefix="`pwd`/_wince"
        DESTDIR="`pwd`/_wince/"
    fi
    ;;
  *nto*)
    SYS=nto
    ;;
  solaris*)
    SYS=solaris
    ;;
  hpux*)
    SYS=hpux
    ;;
  symbian*)
    SYS=symbian
    ;;
  *os2*)
    SYS=os2
    LDFLAGS_save="${LDFLAGS_save} -Zomf -Zbin-files -Zargs-wild"; LDFLAGS="${LDFLAGS_save}"
    ;;
  *)
    SYS="${host_os}"
    ;;
esac
AM_CONDITIONAL(HAVE_ANDROID, test "${HAVE_ANDROID}" = "1")
AM_CONDITIONAL(HAVE_DARWIN,  test "${SYS}" = "darwin")
AM_CONDITIONAL(HAVE_LINUX,   test "${SYS}" = "linux")
AM_CONDITIONAL(HAVE_OS2,     test "${SYS}" = "os2")
AM_CONDITIONAL(HAVE_SYMBIAN, test "${SYS}" = "symbian")
AM_CONDITIONAL(HAVE_WIN32,   test "${SYS}" = "mingw32")
AM_CONDITIONAL(HAVE_WIN64,   test "${HAVE_WIN64}" = "1")
AM_CONDITIONAL(HAVE_WINCE,   test "${SYS}" = "mingwce")
AM_CONDITIONAL(USE_PEFLAGS,  test "${enable_peflags}" = "yes")

dnl
dnl Sadly autoconf doesn't think about testing foo.exe when ask to test
dnl for program foo on win32

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

dnl
dnl  Libtool
dnl  It's very bad, but our former custom system was worst
dnl  -- Courmisch
dnl

dnl override platform specific check for dependent libraries
dnl otherwise libtool linking of shared libraries will
dnl fail on anything other than pass_all.
AC_CACHE_VAL(lt_cv_deplibs_check_method,
    [lt_cv_deplibs_check_method=pass_all])

AC_DISABLE_STATIC
dnl AC_DISABLE_FAST_INSTALL
AC_LIBTOOL_DLOPEN
AC_LIBTOOL_WIN32_DLL
m4_undefine([AC_PROG_F77])
m4_defun([AC_PROG_F77],[])
AC_PROG_LIBTOOL

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

lt_cv_deplibs_check_method=pass_all

dnl
dnl Gettext stuff
dnl
AM_GNU_GETTEXT_VERSION([0.18.1])
AM_GNU_GETTEXT([external])
VLC_ADD_LIBS([libvlccore vlc], [${LTLIBINTL}])

dnl
dnl Iconv stuff
dnl
AM_ICONV
VLC_ADD_CFLAGS([libvlccore],[${INCICONV}])
VLC_ADD_LIBS([libvlccore],[${LTLIBICONV}])

dnl Check for broken versions of mingw-runtime compatability library
AS_IF([test "${SYS}" = "mingw32" -o "${SYS}" = "mingwce"], [
    AC_MSG_CHECKING(for broken mingw-runtime)
    AC_PREPROC_IFELSE([AC_LANG_SOURCE([
#include <_mingw.h>
#if (__MINGW32_MAJOR_VERSION == 3) && (__MINGW32_MINOR_VERSION < 15)
#ifndef __MINGW64_VERSION_MAJOR
# error Attempting to use mingw-runtime with broken vsnprintf support
#endif
#endif
    ])], [
        AC_MSG_RESULT([ok])
    ], [
        AC_MSG_RESULT([present])
        AC_MSG_ERROR([LibVLC requires mingw-runtime version 3.15 or higher!])
    ])
    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"
])

dnl Check for the need to include the mingwex lib for mingw32
if test "${SYS}" = "mingw32" ; then
    AC_CHECK_LIB(mingwex,opendir,
        AC_CHECK_LIB(mingw32,opendir,,
            [VLC_ADD_LIBS([libvlccore],[-lmingwex])])
    )
fi

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

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

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

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

dnl
dnl Buggy glibc prevention. Purposedly not cached.
dnl See sourceware.org bugs 5058 and 5443.
dnl Ubuntu alone has 20 bug numbers for this...
dnl
AC_MSG_CHECKING(for buggy GNU/libc versions)
AC_PREPROC_IFELSE([AC_LANG_SOURCE([
#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])
  AS_IF([test "x${enable_nls}" != "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.])
  ], [
    AC_DEFINE(DISABLE_BUGGY_GLIBC_CHECK, 1, [Disables runtime check for buggy glibc.])
  ])
])

dnl Plugin compilation stuff

VLC_LIBRARY_SUFFIX

dnl The -DSYS_FOO flag
CPPFLAGS_save="${CPPFLAGS_save} -DSYS_`echo ${SYS} | sed -e 's/-.*//' | tr 'abcdefghijklmnopqrstuvwxyz.' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`"; CPPFLAGS="${CPPFLAGS_save}"

dnl Check for system libs needed
need_libc=false

dnl Check for usual libc functions
AC_CHECK_FUNCS([daemon fcntl fdopendir fstatvfs fork getenv getpwuid_r gettimeofday isatty lstat memalign mmap openat pread posix_fadvise posix_madvise posix_memalign setlocale stricmp strnicmp uselocale])
AC_REPLACE_FUNCS([asprintf atof atoll dirfd getcwd getdelim getpid gmtime_r lldiv localtime_r nrand48 rewind setenv strcasecmp strcasestr strdup strlcpy strncasecmp strndup strnlen strsep strtof strtok_r strtoll swab tdestroy vasprintf])
AC_CHECK_FUNCS(fdatasync,,
  [AC_DEFINE(fdatasync, fsync, [Alias fdatasync() to fsync() if missing.])
])

# Windows CE doesn't have strcoll()
AC_FUNC_STRCOLL

dnl Check for non-standard system calls
AC_CHECK_FUNCS([accept4 pipe2 eventfd vmsplice sched_getaffinity])

AH_BOTTOM([#include <vlc_fixups.h>])

SOCKET_LIBS=""
AC_CHECK_FUNCS(connect,,[
  AC_CHECK_LIB(socket,connect,[
    VLC_ADD_LIBS([libvlccore cdda],-lsocket)
    SOCKET_LIBS="-lsocket"
  ])
])
AC_SUBST(SOCKET_LIBS)

AC_CHECK_FUNCS(send,,[
  AC_CHECK_LIB(socket,send,[
    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])
  ])
])


dnl Check for socklen_t
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([
[#include <sys/types.h>
#ifdef WIN32
# include <winsock2.h>
# include <ws2tcpip.h>
#else
# include <sys/socket.h>
#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)])

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 )
     # include <winsock2.h>
     #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)])
AS_IF([test "${ac_cv_struct_sockaddr_storage}" = no], [
  AC_DEFINE(sockaddr_storage, sockaddr)
  AC_DEFINE(ss_family, sa_family)
])

dnl getaddrinfo, getnameinfo and gai_strerror check
dnl  -lnsl and -lsocket are needed on Solaris;
dnl  we purposedly make the test fail on Windows
LIBS_save="${LIBS}"
AC_SEARCH_LIBS([getaddrinfo], [nsl],,, [${SOCKET_LIBS}])
LIBS="${LIBS_save}"

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"]))
if test "${ac_cv_c_va_copy}" = "yes"; then
  AC_DEFINE(HAVE_VA_COPY, 1, [Define if <stdarg.h> defines va_copy.])
fi
AC_CACHE_CHECK([for __va_copy], ac_cv_c___va_copy,
  AC_TRY_LINK(
    [#include <stdarg.h>],
    [va_list ap1, ap2; __va_copy(ap1,ap2);],
    [ac_cv_c___va_copy="yes"],
    [ac_cv_c___va_copy="no"]))
if test "${ac_cv_c___va_copy}" = "yes"; then
  AC_DEFINE(HAVE___VA_COPY, 1, [Define if <stdarg.h> defines __va_copy.])
fi

AC_CHECK_FUNCS(inet_aton,,[
  AC_CHECK_LIB(resolv,inet_aton,[
    VLC_ADD_LIBS([libvlccore],[-lresolv])
  ])
])

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)

if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
AC_CHECK_LIB(m,cos,[
  VLC_ADD_LIBS([adjust wave ripple psychedelic gradient a52tofloat32 dtstofloat32 x264 goom visual panoramix rotate noise grain scene kate flac lua chorus_flanger],[-lm])
])
AC_CHECK_LIB(m,pow,[
  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 qt4],[-lm])
])
AC_CHECK_LIB(m,sqrt,[
  VLC_ADD_LIBS([compressor headphone_channel_mixer normvol audiobargraph_a speex mono colorthres extract ball],[-lm])
])
AC_CHECK_LIB(m,ceil,[
  VLC_ADD_LIBS([access_imem hotkeys mosaic swscale_omap],[-lm])
])
AC_CHECK_LIB(m,exp,[
  VLC_ADD_LIBS([gaussianblur],[-lm])
])
AC_CHECK_LIB(m,round,[
  VLC_ADD_LIBS([dbus],[-lm])
])
AC_CHECK_LIB(m,sqrtf,[
  VLC_ADD_LIBS([x264],[-lm])
])
fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"

AC_CHECK_LIB(m,lrintf, [
  AC_DEFINE(HAVE_LRINTF, 1, [Define to 1 if you have the lrintf function])
  VLC_ADD_LIBS([skins2],[-lm])
])

dnl Check for dynamic plugins
ac_cv_have_plugins=no

# HP-UX style
if test "${ac_cv_have_plugins}" = "no"; then
  AC_CHECK_HEADERS(dl.h)
  ac_cv_my_have_shl_load=no
  AC_CHECK_FUNC(shl_load,
   [ac_cv_my_have_shl_load=yes,
    AC_CHECK_LIB(dld, shl_load,
     [ac_cv_my_have_shl_load=yes
      VLC_ADD_LIBS([libvlccore],[-ldld])])])
  if test "${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 "${ac_cv_have_plugins}" = "no"; then
  if test "${SYS}" = "mingw32" ; then
    AC_CHECK_LIB(kernel32, main,
     [VLC_ADD_LIBS([libvlccore],[-lkernel32])
      AC_DEFINE(HAVE_DL_WINDOWS, 1, [Define if you have Windows' LoadLibrary])
      ac_cv_have_plugins=yes])
  fi
fi

# 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

# Only test for dlopen() if the others didn't work
LIBDL=""
if test "${ac_cv_have_plugins}" = "no" -o "${SYS}" = "darwin"; then
  AC_CHECK_HEADERS(dlfcn.h sys/dl.h)
  ac_cv_my_have_dlopen=no
  AC_CHECK_FUNC(dlopen, [
    ac_cv_my_have_dlopen=yes
  ], [
    AC_CHECK_LIB(dl, dlopen, [
      ac_cv_my_have_dlopen=yes
      LIBDL="-ldl"
    ], [
      AC_CHECK_LIB(svld, dlopen, [
        ac_cv_my_have_dlopen=yes
        LIBDL="-lsvld"
      ])
    ])
  ])
  if test "${ac_cv_my_have_dlopen}" = "yes"; then
    AC_DEFINE(HAVE_DL_DLOPEN, 1, [Define if you have the dlopen API])
    ac_cv_have_plugins=yes
    VLC_ADD_LIBS([libvlccore realvideo lua],[$LIBDL])
  fi
fi
AC_SUBST(LIBDL)

if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
  dnl Check for pthreads - borrowed from XMMS
  THREAD_LIB=error
  if test "${THREAD_LIB}" = "error"; then
    AC_CHECK_LIB(pthread,main,THREAD_LIB="-lpthread")
  fi
  if test "${THREAD_LIB}" = "error"; then
    AC_CHECK_LIB(pthreads,main,THREAD_LIB="-lpthreads")
  fi
  if test "${THREAD_LIB}" = "error"; then
    AC_CHECK_LIB(c_r,main,THREAD_LIB="-lc_r")
  fi
  if test "${THREAD_LIB}" = "error"; then
    AC_CHECK_FUNCS(pthread_mutex_lock)
    THREAD_LIB=""
  fi

  VLC_ADD_LIBS([libvlccore libvlc vlc plugin],[${THREAD_LIB}])

  AC_CHECK_LIB(rt, clock_nanosleep, [
    VLC_ADD_LIBS([libvlccore],[-lrt])
    AC_DEFINE(HAVE_CLOCK_NANOSLEEP, 1, [Define to 1 if you have clock_nanosleep.])
  ], [
    dnl HP/UX port
    AC_CHECK_LIB(rt,sem_init, [VLC_ADD_LIBS([libvlccore],[-lrt])])
  ])

  have_nanosleep=false
  AC_CHECK_FUNCS(nanosleep,have_nanosleep=:,[
    AC_CHECK_LIB(rt,nanosleep,
      [VLC_ADD_LIBS([libvlccore],[-lrt]) have_nanosleep=:],
      [AC_CHECK_LIB(posix4,nanosleep,
          [VLC_ADD_LIBS([libvlccore],[-lposix4]) have_nanosleep=:])]
    )
  ])
  if ${have_nanosleep}; then
    AC_DEFINE(HAVE_NANOSLEEP, 1, [Define if nanosleep is available.])
  fi
fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"

dnl Check for misc headers
AC_MSG_CHECKING(for strncasecmp in strings.h)
AC_EGREP_HEADER(strncasecmp,strings.h,[
  AC_MSG_RESULT(yes)
  AC_DEFINE(STRNCASECMP_IN_STRINGS_H, 1,
            Define if <strings.h> defines strncasecmp.)],[
  AC_MSG_RESULT(no)])

dnl Check for headers
AC_CHECK_HEADERS([search.h])
AC_CHECK_HEADERS(getopt.h strings.h locale.h xlocale.h)
AC_CHECK_HEADERS(fcntl.h sys/time.h sys/ioctl.h sys/stat.h)
AC_CHECK_HEADERS([arpa/inet.h netinet/in.h netinet/udplite.h sys/eventfd.h])
AC_CHECK_HEADERS([net/if.h], [], [],
  [
    #include <sys/types.h>
    #include <sys/socket.h>
  ])
AC_CHECK_HEADERS([sys/mount.h], [], [],
  [