configure.ac

dnl Autoconf settings for vlc

AC_INIT(vlc,0.9.0-svn)
VERSION_MAJOR="0"
VERSION_MINOR="9"
VERSION_REVISION="0"
VERSION_EXTRA="svn"

CONFIGURE_LINE="`echo "$0 $ac_configure_args" | sed -e 's/\\\/\\\\\\\/g'`"
CODENAME="Grishenko"

AC_PREREQ(2.59) dnl this really should be 2.59c
AC_CONFIG_SRCDIR(src/libvlc.c)
AC_CONFIG_AUX_DIR(autotools)
AC_CANONICAL_BUILD
AC_CANONICAL_HOST

AM_INIT_AUTOMAKE([1.9 check-news dist-bzip2 no-dist-gzip -Wall])
AM_CONFIG_HEADER(config.h)

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  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
dnl  Check for the contrib directory
dnl
AC_ARG_WITH(contrib,
    [  --without-contrib       do not use the libraries in extras/contrib],[],[])
  if test "${with_contrib}" != "no"; then 
    AC_MSG_CHECKING([for libs in extras/contrib])
    topdir="`dirname $0`"
    if test "`echo \"$topdir\" | cut -c 1`" != "/"; then
       topdir="`pwd`/$topdir"
    fi
   if test "`grep HOST ${topdir}/extras/contrib/config.mak 2>/dev/null|awk '{print $3}'`" != "`$CC -dumpmachine`"; then
      if test "${with_contrib}" = "yes"; then
        AC_MSG_RESULT([no])
	AC_MSG_ERROR([ not using the libs in extras/contrib as it is not the same host])
      else
        AC_MSG_RESULT([no])
	AC_MSG_WARN([ not using the libs in extras/contrib as it is not the same host])
      fi
     else
  if test -d ${topdir}/extras/contrib/lib; then
    AC_MSG_RESULT([yes])
    export PATH=${topdir}/extras/contrib/bin:$PATH
    CPPFLAGS="${CPPFLAGS} -I${topdir}/extras/contrib/include"
    CPPFLAGS_save="${CPPFLAGS_save} -I${topdir}/extras/contrib/include"
    CFLAGS="${CFLAGS} -I${topdir}/extras/contrib/include"
    CFLAGS_save="${CFLAGS_save} -I${topdir}/extras/contrib/include"
    CXXFLAGS="${CXXFLAGS} -I${topdir}/extras/contrib/include"
    CXXFLAGS_save="${CXXFLAGS_save} -I${topdir}/extras/contrib/include"
    OBJCFLAGS="${OBJCFLAGS} -I${topdir}/extras/contrib/include"
    OBJCFLAGS_save="${OBJCFLAGS_save} -I${topdir}/extras/contrib/include"
    if test $build = $host -o "$PKG_CONFIG_LIBDIR"; then
    	export PKG_CONFIG_PATH=${topdir}/extras/contrib/lib/pkgconfig:$PKG_CONFIG_PATH
    else
    	export PKG_CONFIG_LIBDIR=${topdir}/extras/contrib/lib/pkgconfig
    fi
    LDFLAGS="${LDFLAGS} -L${topdir}/extras/contrib/lib"
    LDFLAGS_save="${LDFLAGS_save} -L${topdir}/extras/contrib/lib"

dnl kludge because only the debian package provides a ffmpeg-config
    if test -z $with_ffmpeg_config_path; then 
       with_ffmpeg_config_path=${topdir}/extras/contrib/bin;
    fi
    if test -z $with_live555_tree; then
       with_live555_tree=${topdir}/extras/contrib/src/live
    fi
    if test -z $with_goom_tree; then
      with_goom_tree=${topdir}/extras/contrib/src/goom
    fi
    if test -z $with_mozilla_sdk_path; then
       with_mozilla_sdk_path=${topdir}/extras/contrib/gecko-sdk
    fi
    if test -z $with_cyberlink_tree; then
       with_cyberlink_tree=${topdir}/extras/contrib/src/clinkcc
    fi
    if test -z $with_libmpeg2_tree; then
	with_libmpeg2_tree=${topdir}/extras/contrib/src/mpeg2dec
    fi

    if test ".`uname -s`" = ".Darwin"; then
      export LD_LIBRARY_PATH=${topdir}/extras/contrib/lib:$LD_LIBRARY_PATH
      export DYLD_LIBRARY_PATH=${topdir}/extras/contrib/lib:$DYLD_LIBRARY_PATH
    elif test ".`uname -s`" = ".BeOS"; then
      export LIBRARY_PATH=${topdir}/extras/contrib/lib:$LIBRARY_PATH
      export BELIBRARIES=${topdir}/extras/contrib/lib:$BELIBRARIES
    fi
  else
     AC_MSG_RESULT([no])
  fi
  fi
fi
dnl
dnl  Set default values
dnl
LDFLAGS_vlc="${LDFLAGS}"

dnl
dnl  Check the operating system
dnl
case "${host_os}" in
  "")
    SYS=unknown
    ;;
  linux*)
    SYS=linux
    ;;
  bsdi*)
    SYS=bsdi
    CFLAGS_save="${CFLAGS_save} -pthread"; CFLAGS="${CFLAGS_save}"
    VLC_ADD_LDFLAGS([dvd dvdcss vcd cdda vcdx cddax],[-ldvd])
    ;;
  *bsd*)
    SYS="${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="${LDFLAGS_save}"
        ;;
    esac
    ;;
  darwin*)
    SYS=darwin
    CFLAGS_save="${CFLAGS_save} -D_INTL_REDIRECT_MACROS"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="${CXXFLAGS_save} -D_INTL_REDIRECT_MACROS"; CXXFLAGS="${CXXFLAGS_save}"
    OBJCFLAGS_save="${OBJCFLAGS_save} -D_INTL_REDIRECT_MACROS -std=gnu99"; OBJCFLAGS="${OBJCFLAGS_save}"
    VLC_ADD_LDFLAGS([mp4], [-framework IOKit -framework CoreFoundation])
    VLC_ADD_LDFLAGS([mkv mp4], [-framework IOKit -framework CoreFoundation])
    VLC_ADD_CFLAGS([libvlc vlc],[-x objective-c])
    VLC_ADD_LDFLAGS([vlc],[-undefined dynamic_lookup])
    ;;
  *mingw32* | *cygwin* | *wince* | *mingwce* | *pe*)
    AC_CHECK_TOOL(WINDRES, windres, :)
    enable_libtool="no"

    case "${host_os}" in
      *mingw32*)
        SYS=mingw32
        ;;
      *cygwin*)
        dnl Check if we are using the mno-cygwin mode in which case we are
        dnl actually dealing with a mingw32 compiler.
        AC_EGREP_CPP(yes,
            [#ifdef WIN32
             yes
             #endif],
            SYS=mingw32, SYS=cygwin)
        ;;
      *wince* | *mingwce* | *pe*)
        SYS=mingwce
        ;;
    esac

    if test "${SYS}" = "mingw32"; then
        # add ws2_32 for closesocket, select, recv
        CPPFLAGS_save="${CPPFLAGS_save} -D_OFF_T_ -D_off_t=long"; CPPFLAGS="${CPPFLAGS_save}"
        VLC_ADD_LDFLAGS([libvlc],[-lws2_32 -lnetapi32 -lwinmm -mwindows])
        VLC_ADD_LDFLAGS([cdda vcdx cddax],[-lwinmm])
        VLC_ADD_LDFLAGS([access_http access_mms access_udp access_tcp access_ftp access_output_udp sap slp http stream_out_standard stream_out_rtp vod_rtsp access_realrtsp telnet rc netsync growl flac ts audioscrobbler],[-lws2_32])
    fi
    if test "${SYS}" = "mingwce"; then
        # add ws2 for closesocket, select, recv
        CPPFLAGS_save="${CPPFLAGS_save} -D_OFF_T_ -D_off_t=long"; CPPFLAGS="${CPPFLAGS_save}"
        VLC_ADD_CPPFLAGS([libvlc vlc],[-Dmain(a,b)=maince(a,b)])
        VLC_ADD_LDFLAGS([libvlc vlc],[-lws2 -e WinMainCRTStartup])
        VLC_ADD_LDFLAGS([access_http access_mms access_udp access_tcp access_ftp access_output_udp sap http netsync],[-lws2])
   fi
    ;;
  *nto*)
    SYS=nto
    VLC_ADD_LDFLAGS([x11 xvideo],[-lsocket])
    ;;
  solaris*)
    SYS=solaris
    # _POSIX_PTHREAD_SEMANTICS is needed to get the POSIX ctime_r
    # Perhaps it is useful other places as well? 
    CFLAGS_save="${CFLAGS_save} -D_POSIX_PTHREAD_SEMANTICS"; CFLAGS="${CFLAGS_save}"
    ;;
  hpux*)
    SYS=hpux
    ;;
  beos)
    SYS=beos
    CFLAGS_save="${CFLAGS_save} -Wno-multichar"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="${CXXFLAGS_save} -Wno-multichar"; CXXFLAGS="${CXXFLAGS_save}"
    VLC_ADD_CXXFLAGS([beos],[])
    VLC_ADD_LDFLAGS([vlc libvlc logger],[-lbe])
    VLC_ADD_LDFLAGS([beos],[-lbe -lmedia -ltranslation -ltracker -lgame])
    VLC_ADD_LDFLAGS([dvdnav dvdread],[-ldl])
    VLC_ADD_LDFLAGS([access_file],[-lpoll])
    LDFLAGS_save="${LDFLAGS_save} -lintl"; LDFLAGS="${LDFLAGS_save}"
    dnl Check for BONE
    if test -f /boot/beos/system/lib/libbind.so; then
        VLC_ADD_LDFLAGS([access_file access_ftp access_mms access_output_udp telnet netsync sap libvlc growl],[-lbind -lsocket])
    else
        VLC_ADD_LDFLAGS([access_file access_ftp access_mms access_output_udp telnet netsync sap libvlc growl],[-lnet])
    fi

    dnl Ugly check for Zeta
    if test -f /boot/beos/system/lib/libzeta.so; then
        VLC_ADD_LDFLAGS([beos],[-lzeta])
    fi
    ;;
  *)
    SYS="${host_os}"
    ;;
esac
AM_CONDITIONAL(HAVE_BEOS, test "${SYS}" = "beos")
AM_CONDITIONAL(HAVE_DARWIN, test "${SYS}" = "darwin")
AM_CONDITIONAL(HAVE_WIN32, test "${SYS}" = "mingw32")
AM_CONDITIONAL(HAVE_WINCE, test "${SYS}" = "mingwce")

dnl
dnl  Libtool
dnl  It's very bad, but our former custom system was worst
dnl  -- Courmisch
dnl
AC_DISABLE_STATIC
AC_LIBTOOL_DLOPEN
dnl AC_LIBTOOL_WIN32_DLL - couldn't get libtool to work on Win32 so far
m4_undefine([AC_PROG_F77])
m4_defun([AC_PROG_F77],[])
AC_PROG_LIBTOOL

AC_ARG_ENABLE(libtool,
    [  --enable-libtool        use libtool (default enabled)])
AM_CONDITIONAL(USE_LIBTOOL, [test "x${enable_libtool}" != "xno"])


dnl
dnl  Check for Mac OS X SDK settings
dnl
AC_ARG_WITH(macosx-sdk,
   [  --with-macosx-sdk       compile with the Mac OS X 10.4u SDK],[], with_macosx_sdk=no)
if test "${with_macosx_sdk}" != "no" ; then
    CFLAGS_save="${CFLAGS_save} -DMACOSX_DEPLOYMENT_TARGET=10.4 -isysroot /Developer/SDKs/MacOSX10.4u.sdk -mmacosx-version-min=10.4"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="${CXXFLAGS_save} -DMACOSX_DEPLOYMENT_TARGET=10.4 -isysroot /Developer/SDKs/MacOSX10.4u.sdk -mmacosx-version-min=10.4"; CXXFLAGS="${CXXFLAGS_save}"
    OBJCFLAGS_save="${OBJCFLAGS_save} -DMACOSX_DEPLOYMENT_TARGET=10.4 -isysroot /Developer/SDKs/MacOSX10.4u.sdk -mmacosx-version-min=10.4"; OBJCFLAGS="${OBJCFLAGS_save}"
    LDFLAGS_save="${LDFLAGS_save} -isysroot /Developer/SDKs/MacOSX10.4u.sdk -Wl,-syslibroot,/Developer/SDKs/MacOSX10.4u.sdk"; LDFLAGS="${LDFLAGS_save}"
    export MACOSX_DEPLOYMENT_TARGET=10.4
    MACOSX_DEPLOYMENT_TARGET="10.4"
fi

dnl
dnl Gettext stuff
dnl
ALL_LINGUAS="af ar bn ca co cs da de el en_GB es eu fr fur gl he hi hu it ja ka ko lt lv ms my ne nl no oc pa pl ps pt_BR pt_PT ro ru sk sl sq sv tet th tl tr zh_CN zh_TW"
AM_GNU_GETTEXT_VERSION(0.11.5)
AM_GNU_GETTEXT
AS_IF([test "${nls_cv_force_use_gnu_gettext}" = "yes"], [
  AC_DEFINE(HAVE_INCLUDED_GETTEXT, 1, [Define if we use the local libintl])
  AM_CPPFLAGS="${AM_CPPFLAGS} -I\$(top_builddir)/intl"
  AS_IF([test "${enable_libtool}" != "no"], [
    INCLUDED_LIBINTL="${LTLIBINTL}"
  ],[
    INCLUDED_LIBINTL="${LIBINTL}"
  ])
], [
  AS_IF([test "${enable_libtool}" != "no"], [
    VLC_ADD_LDFLAGS([libvlc vlc], [${LTLIBINTL}])
  ], [
    VLC_ADD_LDFLAGS([libvlc vlc], [${LIBINTL}])
  ])
])
AC_SUBST(INCLUDED_LIBINTL)
XGETTEXT="${XGETTEXT} --keyword=_NS --keyword=_ANS" 

dnl
dnl Iconv stuff
dnl
if test "${SYS}" != "mingwce"; then
AS_IF([test "$am_cv_func_iconv" != "yes"],
	[AC_MSG_ERROR([libiconv is needed for VLC to work properly])])
fi
VLC_ADD_CFLAGS([libvlc],[${INCICONV}])
AS_IF([test "${enable_libtool}" != "no"], [
  VLC_ADD_LDFLAGS([libvlc vlc],[${LIBICONV}])
],[
  VLC_ADD_LDFLAGS([libvlc vlc],[${LTLIBICONV}])
])

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_LDFLAGS([libvlc],[]),
            [VLC_ADD_LDFLAGS([libvlc gtk],[-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 Plugin compilation stuff

VLC_LIBRARY_SUFFIX

VLC_SYMBOL_PREFIX
AC_SUBST(SYMPREF)

AS_IF([test "${enable_libtool}" = "no"], [
case "${SYS}" in
  mingw32|cygwin)
    VLC_ADD_CFLAGS([pic plugin mozilla activex],[${CFLAGS_mingw32_special}])
    VLC_ADD_CXXFLAGS([pic plugin mozilla activex],[${CFLAGS_mingw32_special} ${CXXFLAGS_mingw32_special}])
    VLC_ADD_OBJCFLAGS([pic plugin mozilla activex],[${CFLAGS_mingw32_special}])
    ;;
  mingwce)
    ;;
  *)
    VLC_ADD_CFLAGS([pic plugin mozilla],[-fpic -fPIC])
    VLC_ADD_CXXFLAGS([pic plugin mozilla],[-fpic -fPIC])
    VLC_ADD_OBJCFLAGS([pic plugin mozilla],[-fpic -fPIC])
    VLC_ADD_LDFLAGS([plugin mozilla],[-fpic -fPIC])
    ;;
esac
])

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

AC_CHECK_FUNCS(gettimeofday strtod strtol strtof strtoll strtoull strsep isatty vasprintf asprintf swab sigrelse getpwuid memalign posix_memalign if_nametoindex atoll getenv putenv setenv gmtime_r ctime_r localtime_r lrintf daemon scandir fork bsearch lstat strlcpy)

dnl Check for usual libc functions
AC_CHECK_FUNCS(strdup strndup atof)
AC_CHECK_FUNCS(strcasecmp,,[AC_CHECK_FUNCS(stricmp)])
AC_CHECK_FUNCS(strncasecmp,,[AC_CHECK_FUNCS(strnicmp)])
AC_CHECK_FUNCS(strcasestr,,[AC_CHECK_FUNCS(stristr)])

dnl Check for setlocal and langinfo
AC_CHECK_FUNCS(setlocale)
AC_CHECK_HEADERS(langinfo.h)
AC_CHECK_FUNCS(nl_langinfo)

AC_CACHE_CHECK([for nl_langinfo and CODESET], ac_cv_langinfo_codeset,
  [AC_TRY_LINK([#include <langinfo.h>],
    [char* cs = nl_langinfo(CODESET);],
    ac_cv_langinfo_codeset=yes,
    ac_cv_langinfo_codeset=no)
  ])
if test ${ac_cv_langinfo_codeset} = yes; then
  AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
    [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
fi

AC_CHECK_FUNCS(connect,,[
  AC_CHECK_LIB(socket,connect,[
    VLC_ADD_LDFLAGS([libvlc cdda cddax],-lsocket)
    LIBS_socket="-lsocket"
  ])
])

AC_CHECK_FUNCS(send,,[
  AC_CHECK_LIB(socket,send,[
    VLC_ADD_LDFLAGS([access_http access_mms access_udp access_tcp access_ftp sap access_output_udp stream_out_standard growl],[-lsocket])
  ])
])

AC_CHECK_FUNCS(gethostbyname,,[
  AC_CHECK_LIB(nsl,gethostbyname,[
    VLC_ADD_LDFLAGS([cdda cddax libvlc],[-lnsl])
  ],[
    AC_CHECK_LIB(bind,gethostbyname,[
      VLC_ADD_LDFLAGS([access_mms],[-lbind])
    ])
  ])
])

dnl Check for socklen_t
AC_CACHE_CHECK([for socklen_t], ac_cv_type_socklen_t,
  [AC_TRY_COMPILE(
     [#include <sys/types.h>
      #include <sys/socket.h>],
     [socklen_t len = 42; return len;],
     ac_cv_type_socklen_t=yes,
     ac_cv_type_socklen_t=no)])
if test "${ac_cv_type_socklen_t}" != "no"; then
  AC_DEFINE(HAVE_SOCKLEN_T, 1, [Define if <sys/socket.h> defines socklen_t.])
fi

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 <winsock.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="${LIBS}"
AH_TEMPLATE(HAVE_GETADDRINFO, [Define to 1 if you have the `getaddrinfo' function.])
AC_SEARCH_LIBS([getaddrinfo], [nsl], [AC_DEFINE(HAVE_GETADDRINFO)],, [${LIBS_socket}])

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}"

AH_TEMPLATE(HAVE_ADDRINFO, [Define to 1 if <netdb.h> defines `struct addrinfo'.])
AC_CHECK_TYPES([struct addrinfo],[AC_DEFINE(HAVE_ADDRINFO)],,
[#include <sys/types.h>
#if defined( WIN32 ) || defined( UNDER_CE )
# if defined(UNDER_CE) && defined(sockaddr_storage)
#  undef sockaddr_storage
# endif
# include <winsock2.h>
# include <ws2tcpip.h>
#else
# include <netdb.h>
#endif])

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_LDFLAGS([libvlc],[-lresolv])
  ])
])

dnl Check for getopt (always use builtin one on win32)
if test "${SYS}" = "mingw32" -o "${SYS}" = "mingwce"; then
need_getopt=:
else
need_getopt=false
AC_CHECK_FUNCS(getopt_long,[AC_DEFINE(HAVE_GETOPT_LONG,1,long getopt support)],
[ # FreeBSD has a gnugetopt library for this:
  AC_CHECK_LIB([gnugetopt],[getopt_long],
    [AC_DEFINE(HAVE_GETOPT_LONG,1,getopt support)
     VLC_ADD_LDFLAGS([libvlc],[-lgnugetopt])],
    [need_getopt=:])])
fi
AM_CONDITIONAL(BUILD_GETOPT, ${need_getopt})

if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
AC_TYPE_SIGNAL
AC_CHECK_LIB(m,cos,[
  VLC_ADD_LDFLAGS([adjust wave ripple psychedelic gradient a52tofloat32 dtstofloat32 x264 goom visual panoramix rotate noise],[-lm])
])
AC_CHECK_LIB(m,pow,[
  VLC_ADD_LDFLAGS([ffmpeg ffmpegaltivec stream_out_transrate i420_rgb faad twolame equalizer param_eq libvlc vorbis freetype mod mpc dmo quicktime realaudio galaktos opengl],[-lm])
])
AC_CHECK_LIB(m,sqrt,[
  VLC_ADD_LDFLAGS([headphone_channel_mixer normvol speex mono colorthres extract],[-lm])
])
AC_CHECK_LIB(m,ceil,[
  VLC_ADD_LDFLAGS([mosaic],[-lm])
])
AC_CHECK_LIB(mx,sqrtf,[
  VLC_ADD_LDFLAGS([x264],[-lmx])
])
fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"

dnl Check for dynamic plugins
ac_cv_have_plugins=no

# OS X style
AC_CHECK_HEADERS(mach-o/dyld.h,
  [AC_CHECK_FUNCS(NSLinkModule,
    [AC_DEFINE(HAVE_DL_DYLD, 1, [Define if you have the Darwin dyld API])
     ac_cv_have_plugins=yes])])

# HP-UX style
if test "${ac_cv_have_plugins}" = "no"; then
  AC_CHECK_HEADERS(dl.h)
  ac_cv_my_have_shl_load=no
  AC_CHECK_FUNC(shl_load,
   [ac_cv_my_have_shl_load=yes,
    AC_CHECK_LIB(dld, shl_load,
     [ac_cv_my_have_shl_load=yes
      VLC_ADD_LDFLAGS([libvlc],[-ldld])])])
  if test "${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

# Whatever style
if test "${ac_cv_have_plugins}" = "no"; then
  AC_CHECK_LIB(dld, dld_link,
   [VLC_ADD_LDFLAGS([libvlc],[-ldld])
    AC_DEFINE(HAVE_DL_DLD_LINK, 1, [Define if you have the GNU dld library])
    ac_cv_have_plugins=yes])
fi

# Win32 style
if test "${ac_cv_have_plugins}" = "no"; then
  if test "${SYS}" = "mingw32" -o "${SYS}" = "cygwin"; then
    AC_CHECK_LIB(kernel32, main,
     [VLC_ADD_LDFLAGS([libvlc],[-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

# BeOS style
if test "${ac_cv_have_plugins}" = "no"; then
  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])
fi

# Only test for dlopen() if the others didn't work
if test "${ac_cv_have_plugins}" = "no"; then
  AC_CHECK_HEADERS(dlfcn.h sys/dl.h)
  ac_cv_my_have_dlopen=no
  AC_CHECK_FUNC(dlopen,
    ac_cv_my_have_dlopen=yes,
    AC_CHECK_LIB(dl, dlopen,
      ac_cv_my_have_dlopen=yes
      VLC_ADD_LDFLAGS([libvlc],[-ldl]),
      AC_CHECK_LIB(svld, dlopen,
        ac_cv_my_have_dlopen=yes
        VLC_ADD_LDFLAGS([libvlc],[-lsvld]))))
  if test "${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
  fi
fi

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

dnl Check for cthreads under GNU/Hurd for instance
AC_CHECK_LIB(threads,cthread_fork,THREAD_LIB="-lthreads")

dnl
dnl  GNU portable threads
dnl
AC_ARG_ENABLE(pth,
  [  --enable-pth            GNU Pth support (default disabled)],
  [ if test "${enable_pth}" = "yes"; then
    AC_CHECK_LIB(pth,pth_init)
    AC_MSG_CHECKING(for pth_init in pth.h)
    AC_EGREP_HEADER(pth_init,pth.h,[
      AC_MSG_RESULT(yes)
      AC_DEFINE(PTH_INIT_IN_PTH_H, 1,
                Define if <pth.h> defines pth_init)
      THREAD_LIB="-lpth"
    ],[
      AC_MSG_RESULT(no)
    ])
    fi
])

dnl
dnl  State Threads
dnl
AC_ARG_ENABLE(st,
  [  --enable-st             State Threads (default disabled)],
  [ if test "${enable_st}" = "yes"; then
    AC_CHECK_LIB(st,st_init)
    AC_MSG_CHECKING(for st_init in st.h)
    AC_EGREP_HEADER(st_init,st.h,[
      AC_MSG_RESULT(yes)
      AC_DEFINE(ST_INIT_IN_ST_H, 1,
                Define if <st.h> defines st_init)
      THREAD_LIB="-lst"
    ],[
      AC_MSG_RESULT(yes)
    ])
    fi
])

VLC_ADD_LDFLAGS([libvlc plugin],[${THREAD_LIB}])

dnl Don't link with rt when using GNU-pth
if test "${THREAD_LIB}" != "-lpth" && test "${THREAD_LIB}" != "-lst"; then
  AC_CHECK_LIB(rt, clock_nanosleep, [
    VLC_ADD_LDFLAGS([libvlc],[-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_LDFLAGS([libvlc],[-lrt])])
  ])

  have_nanosleep=false
  AC_CHECK_FUNCS(nanosleep,have_nanosleep=:,[
    AC_CHECK_LIB(rt,nanosleep,
      [VLC_ADD_LDFLAGS([libvlc],[-lrt]) have_nanosleep=:],
      [AC_CHECK_LIB(posix4,nanosleep,
          [VLC_ADD_LDFLAGS([libvlc],[-lposix4]) have_nanosleep=:])]
    )
  ])
  if ${have_nanosleep}; then
    AC_DEFINE(HAVE_NANOSLEEP, 1,
              Define if nanosleep is available.)
  fi
fi

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

AC_MSG_CHECKING(for pthread_once in pthread.h)
AC_EGREP_HEADER(pthread_once,pthread.h,[
  AC_MSG_RESULT(yes)
  AC_DEFINE(PTHREAD_ONCE_IN_PTHREAD_H, 1,
            Define if <pthread.h> defines pthread_once.)],[
  AC_MSG_RESULT(no)])
fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"

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(signal.h time.h errno.h stdint.h stdbool.h getopt.h strings.h inttypes.h sys/int_types.h wchar.h)
AC_CHECK_HEADERS(sys/sockio.h fcntl.h sys/types.h sys/time.h sys/times.h sys/ioctl.h sys/stat.h)
AC_CHECK_HEADERS([arpa/inet.h net/if.h netinet/in.h sys/socket.h netinet/udplite.h])
if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
AC_CHECK_HEADERS(machine/param.h sys/shm.h)
AC_CHECK_HEADERS(linux/version.h)
AC_CHECK_HEADERS(syslog.h)
fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"

AC_HEADER_TIME

AC_CHECK_TYPE(ssize_t, int)
AC_SEARCH_LIBS(poll, [poll], [AC_DEFINE(HAVE_POLL, 1, [Define to 1 if the OS is usabl... err, has poll().])])

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

dnl Mac OS X and other OSes don't have declaration for nanosleep
if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
AC_MSG_CHECKING(for nanosleep in time.h)
AC_EGREP_HEADER(nanosleep,time.h,[
  AC_MSG_RESULT(yes)
  AC_DEFINE(HAVE_DECL_NANOSLEEP, 1,
            Define if <time.h> defines nanosleep.)
],[
  AC_MSG_RESULT(no)
])
fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"

dnl Make sure we have timespecs
AC_MSG_CHECKING(for timespec in sys/time.h)
AC_EGREP_HEADER(timespec,sys/time.h,[
  AC_MSG_RESULT(yes)
  AC_DEFINE(HAVE_STRUCT_TIMESPEC, 1,
            Define if <sys/time.h> defines struct timespec.)
],[
  AC_MSG_RESULT(no)
])

dnl Check for threads library
if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
AC_CHECK_HEADERS(cthreads.h pthread.h kernel/scheduler.h kernel/OS.h)
fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"

dnl Find where are the X headers and libraries
AC_PATH_XTRA()

dnl it seems that autoconf do the pkg-config detection only for the first PKG_CHECK_MODULES in the configure.ac ( which is logical) but in our case it is nested in a if so it was not working if you're not on linux or have disable hal.

PKG_PROG_PKG_CONFIG()

dnl Check for hal
AC_ARG_ENABLE(hal,
  [  --enable-hal            Linux HAL services discovery (default enabled)])
 
if test "${enable_hal}" != "no"
then
  PKG_CHECK_MODULES(HAL, hal >= 0.5.0,
    [ AC_DEFINE( HAVE_HAL_1, [] , [Define if you have the new HAL library API])
      AC_DEFINE( HAVE_HAL, [], [Define if you have the HAL library] )
      VLC_ADD_PLUGINS([hal probe_hal]) 
      VLC_ADD_LDFLAGS([libvlc hal probe_hal],[$HAL_LIBS])
      VLC_ADD_CFLAGS([libvlc hal probe_hal],[$HAL_CFLAGS])],   
    dnl No hal 0.5 Test for 0.2
    [ PKG_CHECK_MODULES( HAL, hal >= 0.2.97, 
       [AC_DEFINE(HAVE_HAL, [], [Define if you have the HAL library])
        VLC_ADD_PLUGINS([hal])
        VLC_ADD_LDFLAGS([libvlc hal],[$HAL_LIBS])
        VLC_ADD_CFLAGS([libvlc hal],[$HAL_CFLAGS])],
       [AC_MSG_WARN(HAL library not found)])
    ]
  )
fi

dnl Check for dbus
AC_ARG_ENABLE(dbus,
  [  --enable-dbus           Linux D-BUS message bus system (default enabled)])
case "${SYS}" in
    linux*|*bsd*)
if test "${enable_dbus}" != "no"
then
  dnl api stable dbus
  PKG_CHECK_MODULES(DBUS, dbus-1 >= 1.0.0,
    [ AC_DEFINE( HAVE_DBUS_3, 1, [Define if you have the D-BUS library API >= 1.0.0] )
      AC_DEFINE( HAVE_DBUS_2, 1, [Define if you have the D-BUS library API >= 0.92] )
      AC_DEFINE( HAVE_DBUS_1, 1, [Define if you have the D-BUS library API >= 0.30] )
      AC_DEFINE( HAVE_DBUS, 1, [Define if you have the D-BUS library] )
      VLC_ADD_LDFLAGS([screensaver libvlc],[$DBUS_LIBS])
      VLC_ADD_CFLAGS([screensaver libvlc],[$DBUS_CFLAGS])
      dnl Check for dbus control interface
        AC_ARG_ENABLE(dbus-control, [  --enable-dbus-control   D-BUS control interface (default disabled)])
        if test "${enable_dbus_control}" = "yes"
        then
          VLC_ADD_PLUGINS([dbus])
          VLC_ADD_LDFLAGS([dbus],[$DBUS_LIBS])
          VLC_ADD_CFLAGS([dbus],[$DBUS_CFLAGS])
        fi],

    if ${PKG_CONFIG} --exists dbus-1
    then
      [AC_ARG_ENABLE(old-dbus,
        [  --enable-old-dbus      Deprecated D-Bus support (default disabled)])]

      if test "${enable_old_dbus}" != "yes"
      then
        echo ""
        echo "****** WARNING **** WARNING ***** WARNING *************"
        echo "*** Your D-Bus version is < 1.0.0"
        echo "*** You are using old and buggy software and so"
        echo "*** D-Bus support has been disabled."
        echo "*** Please upgrade D-Bus : http://dbus.freedesktop.org"
        echo "*** Alternatively you can force the use of your old and"
        echo "*** buggy D-Bus version by specifying --enable-old-dbus"
        echo "*******************************************************"
        echo ""
      else
        dnl not too old dbus
        [ PKG_CHECK_MODULES(DBUS, dbus-1 >= 0.92,
          [ AC_DEFINE( HAVE_DBUS_2, 1, [Define if you have the D-BUS library API >= 0.92] )
            AC_DEFINE( HAVE_DBUS_1, 1, [Define if you have the D-BUS library API >= 0.30] )
            AC_DEFINE( HAVE_DBUS, 1, [Define if you have the D-BUS library] )
            VLC_ADD_LDFLAGS([screensaver],[$DBUS_LIBS])
            VLC_ADD_CFLAGS([screensaver],[$DBUS_CFLAGS])],
          dnl older dbus
          [ PKG_CHECK_MODULES(DBUS, dbus-1 >= 0.30,
            [ AC_DEFINE( HAVE_DBUS_1, 1, [Define if you have the D-BUS library API >= 0.30 ] )
              AC_DEFINE( HAVE_DBUS, 1, [Define if you have the D-BUS library] )
              VLC_ADD_LDFLAGS([screensaver],[$DBUS_LIBS])
              VLC_ADD_CFLAGS([screensaver],[$DBUS_CFLAGS])],
            dnl much older dbus
            [ PKG_CHECK_MODULES( DBUS, dbus-1, 
               [AC_DEFINE(HAVE_DBUS, 1, [Define if you have the D-BUS library])
                VLC_ADD_LDFLAGS([screensaver],[$DBUS_LIBS])
                VLC_ADD_CFLAGS([screensaver],[$DBUS_CFLAGS])],
               [AC_MSG_WARN(DBUS library not found)])
            ]
          )]
        )]
      fi
    fi
  )
fi
;;
esac

dnl Build the gtk_main plugins?
NEED_GTK_MAIN=no
NEED_GNOME_MAIN=no
NEED_GTK2_MAIN=no
NEED_GNOME2_MAIN=no

dnl build the qte plugin ?
NEED_QTE_MAIN=no

dnl Check for ntohl, etc.
AC_CACHE_CHECK([for ntohl in sys/param.h],
    [ac_cv_c_ntohl_sys_param_h],
    [CFLAGS="${CFLAGS_save} -Wall -Werror"
     AC_TRY_COMPILE([#include <sys/param.h>],
        [int meuh; ntohl(meuh);],
        ac_cv_c_ntohl_sys_param_h=yes, ac_cv_c_ntohl_sys_param_h=no)])
if test "${ac_cv_c_ntohl_sys_param_h}" != "no"; then
    AC_DEFINE(NTOHL_IN_SYS_PARAM_H, 1, Define if <sys/param.h> defines ntohl.)
fi
CFLAGS="${CFLAGS_save}"

RDC_PROG_CC_WFLAGS([all extra no-unused-parameter sign-compare undef pointer-arith bad-function-cast cast-align write-strings old-style-definition missing-prototypes volatile-register-var])
RDC_PROG_CC_FLAGS_IFELSE([-pipe])

dnl This helps detect broken plugins with undefined symbols
dnl Better fail loudly at build-time than silenty at run-time.
dnl Unfortunately, this sucks on FreeBSD (won't even link with -lc)
dnl RDC_PROG_LINK_FLAGS_IFELSE([-Wl,-z,defs], [
dnl   VLC_ADD_LDFLAGS([plugin],[-Wl,-z,defs])
dnl ])

dnl Check for various optimization flags
AC_CACHE_CHECK([if \$CC accepts -Os],
    [ac_cv_c_os],
    [CFLAGS="${CFLAGS_save} -Os"
     AC_TRY_COMPILE([],,ac_cv_c_os=yes, ac_cv_c_os=no)])
if test "${ac_cv_c_os}" != "no" -a "${host_cpu}" = "mipsel"; then
    CFLAGS_OPTIM="${CFLAGS_OPTIM} -Os"
fi

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 "${host_cpu}" != "mipsel"; then
    CFLAGS_OPTIM="${CFLAGS_OPTIM} -O3"
fi

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" -a "${host_cpu}" != "mipsel"; then
    if test "${ac_cv_c_o3}" = "no"; then
        CFLAGS_OPTIM="${CFLAGS_OPTIM} -O2"
    fi
    CFLAGS_NOOPTIM="${CFLAGS_NOOPTIM} -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" -a "${host_cpu}" != "mipsel"; then
        if test "${ac_cv_c_o3}" = "no"; then
            CFLAGS_OPTIM="${CFLAGS_OPTIM} -O"
	fi
        CFLAGS_NOOPTIM="${CFLAGS_NOOPTIM} -O"
    fi
fi

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

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

dnl Check for -fomit-frame-pointer
AC_CACHE_CHECK([if \$CC accepts -fomit-frame-pointer],
    [ac_cv_c_omit_frame_pointer],
    [CFLAGS="${CFLAGS_save} -fomit-frame-pointer"
     AC_TRY_COMPILE([],,ac_cv_c_omit_frame_pointer=yes, ac_cv_c_omit_frame_pointer=no)])
if test "${ac_cv_c_omit_frame_pointer}" != "no"; then
    CFLAGS_OPTIM_NODEBUG="${CFLAGS_OPTIM_NODEBUG} -fomit-frame-pointer"
    # this plugin does not compile without -fomit-frame-pointer, damn gcc!
    VLC_ADD_CFLAGS([i420_yuy2_mmx],[-fomit-frame-pointer])
fi

dnl Check for -fvisibility=hidden
AC_CACHE_CHECK([if \$CC accepts -fvisibility=hidden],
    [ac_cv_c_visibility_hidden],
    [CFLAGS="${CFLAGS_save} -fvisibility=hidden"
     AC_TRY_COMPILE([],,ac_cv_c_visibility_hidden=yes, ac_cv_c_visibility_hidden=no)])
if test "${ac_cv_c_visibility_hidden}" != "no"; then
    VLC_ADD_CFLAGS([libvlc plugin],[-fvisibility=hidden])
fi

dnl Check for -fvisibility-inlines-hidden (breaks x86_64 linkers)
dnl AC_LANG_PUSH(C++)
dnl     AC_CACHE_CHECK([if \$CXX accepts -fvisibility-inlines-hidden],
dnl         [ac_cv_c_visibility_inlines_hidden],
dnl         [CXXFLAGS="${CXXFLAGS_save} -fvisibility-inlines-hidden"
dnl          AC_TRY_COMPILE([],,ac_cv_c_visibility_inlines_hidden=yes, ac_cv_c_visibility_inlines_hidden=no)])
dnl     if test "${ac_cv_c_visibility_inlines_hidden}" != "no"; then
dnl         VLC_ADD_CXXFLAGS([libvlc plugin],[-fvisibility-inlines-hidden])
dnl     fi
dnl     CXXFLAGS="${CXXFLAGS_save}"
dnl AC_LANG_POP(C++)

dnl Check for -mdynamic-no-pic
AC_CACHE_CHECK([if \$CC accepts -mdynamic-no-pic],
    [ac_cv_c_dynamic_no_pic],
    [CFLAGS="${CFLAGS_save} -mdynamic-no-pic"
     AC_TRY_COMPILE([],,ac_cv_c_dynamic_no_pic=yes, ac_cv_c_dynamic_no_pic=no)])
AS_IF([test "${enable_libtool}" = "no" && test "${ac_cv_c_dynamic_no_pic}" != "no"], [
    VLC_ADD_CFLAGS([builtin],[-mdynamic-no-pic])
    VLC_ADD_CFLAGS([libvlc],[-mdynamic-no-pic])
])

dnl Check for Darwin plugin linking flags
AC_CACHE_CHECK([if \$CC accepts -bundle -undefined error],
    [ac_cv_ld_darwin],
    [CFLAGS="${CFLAGS_save} -bundle -undefined error"
     AC_TRY_COMPILE([],,ac_cv_ld_darwin=yes, ac_cv_ld_darwin=no)])
if test "${ac_cv_ld_darwin}" != "no"; then
    VLC_ADD_LDFLAGS([plugin],[-bundle -undefined error])
fi

dnl Check for standard plugin linking flags
dnl BeOS' gcc needs -nostart instead of -shared, even if -shared isn't harmful (just a warning)