configure.ac

  then
    if test "${SYS}" = "mingw32" -o "${SYS}" = "cygwin"
    then
	  AC_MSG_CHECKING(for opencv in ${with_opencv_tree})
	  if test -f ${with_opencv_tree}/cv/include/cv.h -a -f ${with_opencv_tree}/cxcore/include/cxcore.h \
	    -a -f ${with_opencv_tree}/cvaux/include/cvaux.h -a -f ${with_opencv_tree}/otherlibs/highgui/highgui.h
      then
        AC_MSG_RESULT(yes)
        VLC_ADD_PLUGINS([opencv_wrapper])
        VLC_ADD_LDFLAGS([opencv_wrapper],[-L${with_opencv_tree}/lib -lcv -lcxcore -lcvaux -lhighgui])
        VLC_ADD_CFLAGS([opencv_wrapper],[-I${with_opencv_tree}/cv/include -I${with_opencv_tree}/cxcore/include -I${with_opencv_tree}/cvaux/include -I${with_opencv_tree}/otherlibs/highgui])
        AC_LANG_PUSH(C++)
        VLC_ADD_PLUGINS([opencv_example])
        VLC_ADD_LDFLAGS([opencv_example],[-L${with_opencv_tree}/lib -lcv -lcxcore -lcvaux -lhighgui])
        VLC_ADD_CXXFLAGS([opencv_example],[-I${with_opencv_tree}/cv/include -I${with_opencv_tree}/cxcore/include -I${with_opencv_tree}/cvaux/include -I${with_opencv_tree}/otherlibs/highgui])
        AC_LANG_POP(C++)        
	  else
        dnl  No opencv could be found, sorry
        AC_MSG_RESULT(no)
        AC_MSG_ERROR([cannot find opencv in ${with_opencv_tree}])
	  fi
    else
	  AC_MSG_WARN([--enable-opencv currently only works on windows])
    fi
  fi  
fi


dnl
dnl  libsmbclient plugin
dnl
AC_ARG_ENABLE(smb,
  [  --enable-smb            smb input module (default enabled)])
if test "${enable_smb}" != "no"; then
  AC_CHECK_HEADERS(libsmbclient.h,
    [ VLC_ADD_PLUGINS([access_smb])
      VLC_ADD_LDFLAGS([access_smb],[-lsmbclient]) ],
    [ if test -n "${enable_smb}"; then
        AC_MSG_ERROR([cannot find libsmbclient headers])
     fi ])
  AC_CHECK_MEMBER([struct _SMBCCTX.close_fn],
    AC_DEFINE([HAVE__SMBCCTX_CLOSE_FN], [1], [Define if samba has _SMBCCTX.close_fn]),,
    [#include <libsmbclient.h>])
fi

dnl
dnl  libdvbpsi ts demux/mux
dnl
AC_ARG_ENABLE(dvbpsi,
  [  --enable-dvbpsi         dvbpsi ts mux and demux module (default enabled)])
if test "${enable_dvbpsi}" != "no"
then
  AC_ARG_WITH(dvbpsi,
  [    --with-dvbpsi=PATH    libdvbpsi headers and libraries])
  AC_ARG_WITH(dvbpsi,
  [    --with-dvbpsi-tree=PATH libdvbpsi tree for static linking])
  case "${with_dvbpsi}" in
  ""|yes)
    if test -z "${with_dvbpsi_tree}"
    then
      AC_CHECK_HEADERS(dvbpsi/dr.h,
        [ VLC_ADD_PLUGINS([ts])
          if test "${enable_sout}" != "no"; then
            VLC_ADD_PLUGINS([mux_ts])
          fi
          VLC_ADD_LDFLAGS([mux_ts ts dvb],[-ldvbpsi]) ],
        [  AC_MSG_WARN([cannot find libdvbpsi headers]) ],
        [#if defined( HAVE_STDINT_H )
#   include <stdint.h>
#elif defined( HAVE_INTTYPES_H )
#   include <inttypes.h>
#endif
#include <dvbpsi/dvbpsi.h>
#include <dvbpsi/descriptor.h>
#include <dvbpsi/pat.h>
#include <dvbpsi/pmt.h>])
    else
      AC_MSG_CHECKING(for libdvbpsi.a in ${with_dvbpsi_tree})
      real_dvbpsi_tree="`cd ${with_dvbpsi_tree} 2>/dev/null && pwd`"
      if test -z "${real_dvbpsi_tree}"
      then
        dnl  The given directory can't be found
        AC_MSG_RESULT(no)
        AC_MSG_ERROR([cannot cd to ${with_dvbpsi_tree}])
      fi
      if test -f "${real_dvbpsi_tree}/src/.libs/libdvbpsi.a"
      then
        dnl  Use a custom libdvbpsi
        AC_MSG_RESULT(${real_dvbpsi_tree}/src/.libs/libdvbpsi.a)
        VLC_ADD_BUILTINS([ts])
        if test "${enable_sout}" != "no"; then
          VLC_ADD_BUILTINS([mux_ts])
        fi
        VLC_ADD_CPPFLAGS([mux_ts ts dvb],[-I${real_dvbpsi_tree}/src])
        VLC_ADD_LDFLAGS([mux_ts ts dvb],[${real_dvbpsi_tree}/src/.libs/libdvbpsi.a])
      else
        dnl  The given libdvbpsi wasn't built
        AC_MSG_RESULT(no)
        AC_MSG_ERROR([cannot find ${real_dvbpsi_tree}/src/.libs/libdvbpsi.a, make sure you compiled libdvbpsi in ${with_dvbpsi_tree}])
      fi
    fi
  ;;
  no)
    dnl  Compile without dvbpsi
  ;;
  *)
    AC_MSG_CHECKING(for dvbpsi headers in ${with_dvbpsi})
    if test -z "${with_dvbpsi}"
    then
      LDFLAGS_test=""
      CPPFLAGS_test=""
    else
      LDFLAGS_test="-L${with_dvbpsi}/lib"
      CPPFLAGS_test="-I${with_dvbpsi}/include"
    fi
    CPPFLAGS="${CPPFLAGS_save} ${CPPFLAGS_test}"
    AC_CHECK_HEADERS([dvbpsi/dr.h],[
      VLC_ADD_PLUGINS([ts])
      if test "${enable_sout}" != "no"; then
        VLC_ADD_PLUGINS([mux_ts])
      fi
      VLC_ADD_CPPFLAGS([mux_ts ts dvb],[${CPPFLAGS_test}])
      VLC_ADD_LDFLAGS([mux_ts ts dvb],[${LDFLAGS_test} -ldvbpsi])

    ],[
      if test -n "${enable_dvbpsi}"
      then
        AC_MSG_ERROR([Could not find libdvbpsi on your system: you may get it from www.videolan.org, you'll need at least version 0.1.1])
      fi
    ])
    CPPFLAGS="${CPPFLAGS_save}"
  ;;
  esac
  AC_CHECK_LIB(dvbpsi, dvbpsi_GenSDTSections, [
    AC_DEFINE(HAVE_DVBPSI_SDT, 1, [Define if you have dvbpsi_GenSDTSections.])
  ], [], [${LDFLAGS_ts}])

fi

dnl
dnl  Video4Linux plugin
dnl
AC_ARG_ENABLE(v4l,
  [  --enable-v4l            Video4Linux input support (default disabled)])
if test "${enable_v4l}" = "yes"
then
  AC_ARG_WITH(v4l,
    [    --with-v4l=PATH       path to a v4l-enabled kernel tree],[],[])
  if test "${with_v4l}" != "no" -a -n "${with_v4l}"
  then
    VLC_ADD_CPPFLAGS([v4l],[-I${with_v4l}/include])
  fi

  CPPFLAGS="${CPPFLAGS_save} ${CPPFLAGS_v4l}"
  AC_CHECK_HEADERS(linux/videodev.h, [
    VLC_ADD_PLUGINS([v4l])
  ],[])
  CPPFLAGS="${CPPFLAGS_save}"
fi

dnl
dnl  Video4Linux plugin
dnl
AC_ARG_ENABLE(v4l2,
  [  --enable-v4l2            Video4Linux2 input support (default disabled)])
if test "${enable_v4l2}" = "yes"
then
  AC_ARG_WITH(v4l2,
    [    --with-v4l2=PATH       path to a v4l2-enabled kernel tree],[],[])
  if test "${with_v4l2}" != "no" -a -n "${with_v4l2}"
  then
    VLC_ADD_CPPFLAGS([v4l2],[-I${with_v4l2}/include])
  fi

  CPPFLAGS="${CPPFLAGS_save} ${CPPFLAGS_v4l2}"
  AC_CHECK_HEADERS(linux/videodev2.h, [
    VLC_ADD_PLUGINS([v4l2])
  ],[])
  CPPFLAGS="${CPPFLAGS_save}"
fi


dnl
dnl  special access module for Hauppauge PVR cards
dnl
AC_ARG_ENABLE(pvr,
  [  --enable-pvr            PVR cards access module (default disabled)])
if test "${enable_pvr}" = "yes"
then
  VLC_ADD_PLUGINS([pvr])
  AC_ARG_WITH(videodev2,
    [  --with-videodev2=FILE   Location of videodev2.h file (default /usr/include/linux/videodev2.h)],[],[])
  if test "${with_videodev2}" != "no" -a -n "${with_videodev2}"
  then
    AC_DEFINE_UNQUOTED(VIDEODEV2_H_FILE, "${with_videodev2}", [Location of videodev2.h])
  else
    AC_DEFINE(VIDEODEV2_H_FILE, <linux/videodev2.h>, [Location of videodev2.h])
  fi
    

  AC_CACHE_CHECK([for new linux/videodev2.h],
      [new_linux_videodev2_h],
      [AC_TRY_COMPILE([#include <sys/types.h>
          #include VIDEODEV2_H_FILE],
          [struct v4l2_ext_controls ctrls; ctrls.ctrl_class = V4L2_CTRL_CLASS_MPEG; ],
          new_linux_videodev2_h=yes,
          new_linux_videodev2_h=no)])
  if test "${new_linux_videodev2_h}" != "no"; then
    AC_DEFINE(HAVE_NEW_LINUX_VIDEODEV2_H, 1, [Define if new linux/videodev2.h present])
  fi
fi

dnl
dnl  gnomeVFS access module
dnl
AC_ARG_ENABLE(gnomevfs,
  [  --enable-gnomevfs       GnomeVFS access module (default disabled)])
if test "${enable_gnomevfs}" = "yes" 
then
  PKG_CHECK_MODULES(GNOMEVFS, gnome-vfs-2.0,
    VLC_ADD_LDFLAGS([access_gnomevfs],[$GNOMEVFS_LIBS])
    VLC_ADD_CPPFLAGS([access_gnomevfs],[$GNOMEVFS_CPPFLAGS])
    VLC_ADD_CFLAGS([access_gnomevfs],[$GNOMEVFS_CFLAGS])
    VLC_ADD_PLUGINS([access_gnomevfs]),
    AC_MSG_WARN([GnomeVFS support disabled because GnomeVFS development headers not found]))
fi

dnl Need to test libcdio and libvcdinfo for a number of things. Do it now.
AC_ARG_ENABLE(libcdio,
  [  --enable-libcdio        CD input and control library support (default enabled)])


have_libcdio=no
have_libvcdinfo=no
if test "${enable_libcdio}" != "no"
then
  PKG_CHECK_MODULES(LIBCDIO, libcdio >= 0.78.2,
     have_libcdio=yes
     AC_DEFINE(HAVE_LIBCDIO, [], 
     [Define if you have libcdio 0.78.2 or greater installed]),
     [AC_MSG_WARN(CD Reading and information library not found)])

  PKG_CHECK_MODULES(VCDINFO, libvcdinfo >= 0.7.22,
     [have_libvcdinfo=yes
     AC_DEFINE(HAVE_VCDINFO, [], 
     [Define if you have libvcdinfo 0.7.22 or greater installed])],
     [AC_MSG_WARN(VCD information library not found)])
fi

dnl
dnl  VCDX and CDDAX modules
dnl
AC_ARG_ENABLE(cddax,
  [  --enable-cddax          audio CD plugin with CD Text and CD paranoia via libcdio (default disabled)])
 
AC_ARG_ENABLE(libcddb,
  [  --enable-libcddb        CDDB support for libcdio audio CD (default enabled)])
 
if test "${enable_cddax}" = "yes"
then
  if test "$have_libcdio" = "yes"
  then
    AC_DEFINE(HAVE_CDDAX, [], [Define for the audio CD plugin using libcdio])
    VLC_ADD_LDFLAGS([cddax],[$LIBCDIO_LIBS])
    VLC_ADD_CFLAGS([cddax],[$LIBCDIO_CFLAGS])
    VLC_ADD_PLUGINS([cddax])
    PKG_CHECK_MODULES(LIBCDIO_PARANOIA, libcdio_paranoia >= 0.72, [
    VLC_ADD_LDFLAGS([cddax],[$LIBCDIO_CDDA_LIBS $LIBCDIO_CDDA_LIBS $LIBCDIO_PARANOIA_LIBS])],
    AC_MSG_WARN([CD Paranoia support disabled because no libcdio >= 0.72 found]))
  else 
    AC_MSG_WARN([cddax plugin disabled because ok libcdio library not found or disabled])
    HAVE_CDDAX=no
  fi

  if test "$enable_libcddb" != "no"; then
    PKG_CHECK_MODULES(LIBCDDB, libcddb >= 0.9.5, [
      HAVE_LIBCDDB=yes 
      AC_DEFINE(HAVE_LIBCDDB, [], [Define this if you have libcddb installed])
      VLC_ADD_LDFLAGS([cddax],[$LIBCDDB_LIBS])
      VLC_ADD_CFLAGS([cddax],[$LIBCDDB_CFLAGS])
      ],
      [AC_MSG_WARN(new enough libcddb not found. CDDB access disabled) 
      HAVE_LIBCDDB=no])
  fi
 
fi

AC_ARG_ENABLE(vcdx,
  [  --enable-vcdx           VCD with navigation via libvcdinfo (default disabled)])
 
if test "${enable_vcdx}" = "yes"
then
  if test "${have_libvcdinfo}" = "yes"
  then
    VLC_ADD_LDFLAGS([vcdx],[$VCDINFO_LIBS])
    VLC_ADD_CFLAGS([vcdx],[$VCDINFO_CFLAGS])
  else 
    AC_MSG_WARN([vcdx plugin disabled because ok libvcdinfo library not found or disabled])
    HAVE_VCDX=no
  fi

  PKG_CHECK_MODULES(LIBCDIO, libiso9660 >= 0.72,
   [VLC_ADD_LDFLAGS([vcdx],[$LIBISO9660_LIBS])
    VLC_ADD_CFLAGS([vcdx],[$LIBISO9660_CFLAGS])],
    [AC_MSG_WARN([vcdx plugin disabled because ok libiso9660 library not found])
    HAVE_VCDX=no])

  if test "$have_libvcdinfo" = "yes"
  then
    AC_DEFINE(HAVE_VCDX, [], 
    [Define for the VCD plugin using libcdio/libvcdinfo])
    VLC_ADD_LDFLAGS([vcdx],[$VCDINFO_LIBS])
    VLC_ADD_CFLAGS([vcdx],[$VCDINFO_CFLAGS])
    VLC_ADD_PLUGINS([vcdx])
  else 
    AC_MSG_WARN([vcdx plugin disabled because ok libvcdinfo library not found])
    HAVE_VCDX=no
  fi
fi

dnl
dnl  Built-in CD-DA and VCD module
dnl
AC_ARG_ENABLE(cdda,           
  [  --enable-cdda           audio CD via built-in VCD (default enabled)])
 
AC_ARG_ENABLE(vcd,
  [  --enable-vcd            built-in VCD (default enabled)])

if test "${enable_vcd}" != "no"
then
  AC_MSG_CHECKING(for cdrom_msf0 in linux/cdrom.h)
  AC_EGREP_HEADER(cdrom_msf0,linux/cdrom.h,[
    AC_MSG_RESULT(yes)
    VLC_ADD_PLUGINS([vcd cdda])
  ],[
    AC_MSG_RESULT(no)
  ])

  AC_MSG_CHECKING(for scsireq in sys/scsiio.h)
  AC_EGREP_HEADER(scsireq,sys/scsiio.h,[
    AC_MSG_RESULT(yes)
    VLC_ADD_PLUGINS([vcd cdda])
    AC_DEFINE(HAVE_SCSIREQ_IN_SYS_SCSIIO_H, 1, For NetBSD VCD support)
  ],[
    AC_MSG_RESULT(no)
  ])

  AC_MSG_CHECKING(for ioc_toc_header in sys/cdio.h)
  AC_EGREP_HEADER(ioc_toc_header ,sys/cdio.h,[
    AC_MSG_RESULT(yes)
    VLC_ADD_PLUGINS([vcd cdda])
    AC_DEFINE(HAVE_IOC_TOC_HEADER_IN_SYS_CDIO_H, 1, For FreeBSD VCD support)
  ],[
    AC_MSG_RESULT(no)
  ])

  if test "${SYS}" = "bsdi" -o "${SYS}" = "mingw32"
  then
    VLC_ADD_PLUGINS([vcd cdda])
  fi

  if test "${SYS}" = "darwin"
  then
    VLC_ADD_PLUGINS([vcd cdda])
    VLC_ADD_LDFLAGS([vcd vcdx cdda cddax],[-framework IOKit -framework CoreFoundation])
    VLC_ADD_LDFLAGS([vcdx cddax cdda],[-liconv])
  fi

  if test "$enable_libcddb" != "no"; then
    PKG_CHECK_MODULES(LIBCDDB, libcddb >= 0.9.5, [
      HAVE_LIBCDDB=yes 
      AC_DEFINE(HAVE_LIBCDDB, [], [Define this if you have libcddb installed])
      VLC_ADD_LDFLAGS([cdda],[$LIBCDDB_LIBS])
      VLC_ADD_CFLAGS([cdda],[$LIBCDDB_CFLAGS])
      ],:
      [AC_MSG_WARN(new enough libcddb not found. CDDB access disabled) 
      HAVE_LIBCDDB=no])
  fi
fi

dnl
dnl  DVB-S/DVB-T/DVB-C satellite/teresterial/cable input using v4l2
dnl
AC_ARG_ENABLE(dvb,
  [  --enable-dvb            DVB-S/T/C card support (default disabled)])

if test "${enable_dvb}" = "yes"
then
  AC_ARG_WITH(dvb,
  [    --with-dvb=PATH       path to a dvb- and v4l2-enabled kernel tree],[],[])
  if test "${with_dvb}" != "no" -a -n "${with_dvb}"
  then
    VLC_ADD_CFLAGS([dvb],[-I${with_dvb}/include])
  fi
  CPPFLAGS="${CPPFLAGS_save} -I${with_dvb}/include"
  AC_CHECK_HEADERS(linux/dvb/version.h linux/dvb/frontend.h, [
    if test -z "${with_dvbpsi_tree}"
    then
      VLC_ADD_PLUGINS([dvb])
    else
      VLC_ADD_BUILTINS([dvb])
    fi
  ],[AC_MSG_WARN(linux-dvb headers not found, dvb disabled)])
  CPPFLAGS="${CPPFLAGS_save}"
fi

dnl
dnl  Screen capture module
dnl
AC_ARG_ENABLE(screen,
  [  --enable-screen         Screen capture support (default enabled)])
if test "${enable_screen}" != "no"; then
  if test "${SYS}" = "darwin"; then
    AC_CHECK_HEADERS(ApplicationServices/ApplicationServices.h, [
      VLC_ADD_PLUGINS([screen])
      VLC_ADD_LDFLAGS([screen],[-framework ApplicationServices])
    ])
  elif test "${SYS}" = "mingw32"; then
    VLC_ADD_PLUGINS([screen])
    VLC_ADD_LDFLAGS([screen],[-lgdi32])
  elif test "${SYS}" = "mingwce"; then
    CPPFLAGS="${CPPFLAGS_save}"
  elif test "${SYS}" = "beos"; then
    VLC_ADD_PLUGINS([screen])
    VLC_ADD_CXXFLAGS([screen],[])
    VLC_ADD_LDFLAGS([screen],[-lbe])
  else
    CPPFLAGS="${CPPFLAGS_save} ${X_CFLAGS}"
    AC_CHECK_HEADERS(X11/Xlib.h, [
      VLC_ADD_PLUGINS([screen])
      VLC_ADD_LDFLAGS([screen],[${X_LIBS} ${X_PRE_LIBS} -lX11])
      VLC_ADD_CPPFLAGS([screen],[${X_CFLAGS}])
    ])
    CPPFLAGS="${CPPFLAGS_save}"
  fi
fi

dnl
dnl  ipv6 plugin - not for QNX yet
dnl
have_ipv6=no
AC_CHECK_FUNCS(inet_pton,[have_ipv6=yes],[
  AC_CHECK_LIB(nsl,inet_pton, [have_ipv6=yes])
])

AS_IF([test "${have_ipv6}" = "yes"], [
  AC_DEFINE(HAVE_INET_PTON, 1, [Define to 1 if you have inet_pton().])])


AC_CHECK_FUNCS(inet_ntop,[
  AC_DEFINE(HAVE_INET_NTOP, 1, [Define to 1 if you have inet_ntop().])])


dnl
dnl  ogg demux plugin
dnl
AC_ARG_ENABLE(ogg,
  [  --enable-ogg            Ogg demux support (default enabled)])
if test "${enable_ogg}" != "no"
then
  AC_ARG_WITH(ogg-tree,
  [    --with-ogg-tree=PATH  ogg tree for static linking])
  if test -n "${with_ogg_tree}"
  then
    AC_MSG_CHECKING(for libogg.a in ${with_ogg_tree})
    real_ogg_tree="`cd ${with_ogg_tree} 2>/dev/null && pwd`"
    if test -z "${real_ogg_tree}"
    then
      dnl  The given directory can't be found
      AC_MSG_RESULT(no)
      AC_MSG_ERROR([cannot cd to ${with_ogg_tree}])
    fi
    if test -f "${real_ogg_tree}/src/.libs/libogg.a"
    then
      dnl  Use a custom ogg
      AC_MSG_RESULT(${real_ogg_tree}/src/.libs/libogg.a)
      VLC_ADD_PLUGINS([ogg])
      if test "${enable_sout}" != "no"; then
        VLC_ADD_PLUGINS([mux_ogg])
      fi
      VLC_ADD_LDFLAGS([ogg mux_ogg speex vorbis],[${real_ogg_tree}/src/.libs/libogg.a])
      VLC_ADD_CFLAGS([ogg mux_ogg speex vorbis],[-I${real_ogg_tree}/include])
    else
      dnl  The given ogg wasn't built
      AC_MSG_RESULT(no)
      AC_MSG_ERROR([cannot find ${real_ogg_tree}/src/.libs/libogg.a, make sure you compiled ogg in ${with_ogg_tree}])
    fi
  else
    AC_CHECK_HEADERS(ogg/ogg.h, [
      AC_CHECK_LIB( ogg, oggpack_read, [
        VLC_ADD_PLUGINS([ogg])
        if test "${enable_sout}" != "no"; then
          VLC_ADD_PLUGINS([mux_ogg])
        fi
        VLC_ADD_LDFLAGS([ogg mux_ogg],[-logg])])
     ],[])
  fi
fi

dnl
dnl  matroska demux plugin
dnl
AC_ARG_ENABLE(mkv,
  [  --enable-mkv            Matroska demux support (default enabled)])
if test "${enable_mkv}" != "no" -a "${CXX}" != ""; then
  AC_LANG_PUSH(C++)
  AC_CHECK_HEADERS(ebml/EbmlVersion.h, [
    AC_MSG_CHECKING(for libebml version >= 0.7.6)
    AC_EGREP_CPP(yes,
      [#include <ebml/EbmlVersion.h>
       #ifdef LIBEBML_VERSION
       #if LIBEBML_VERSION >= 0x000706
       yes
       #endif
       #endif],
      [AC_MSG_RESULT([yes])
        AC_CHECK_HEADERS(matroska/KaxVersion.h, [
          AC_MSG_CHECKING(for libmatroska version >= 0.7.7)
          AC_EGREP_CPP(yes,
            [#include <matroska/KaxVersion.h>
             #ifdef LIBMATROSKA_VERSION
             #if LIBMATROSKA_VERSION >= 0x000705
             yes
             #endif
             #endif],
            [AC_MSG_RESULT([yes])
              AC_CHECK_HEADERS(matroska/KaxAttachments.h)
              VLC_ADD_CXXFLAGS([mkv],[])
              if test "${SYS}" = "darwin"; then
                VLC_ADD_CXXFLAGS([mkv],[-O1])
              fi
              AC_CHECK_LIB(ebml_pic, main, [
                VLC_ADD_PLUGINS([mkv])
                VLC_ADD_LDFLAGS([mkv],[-lmatroska -lebml_pic])
              ],
                AC_CHECK_LIB(ebml, main, [
                  VLC_ADD_PLUGINS([mkv])
                  VLC_ADD_LDFLAGS([mkv],[-lmatroska -lebml])
                ]) 
	      )
            ],
            [AC_MSG_RESULT([no])
              AC_MSG_ERROR([Your libmatroska is too old: you may get a more recent one from http://dl.matroska.org/downloads/libmatroska/. Alternatively you can use --disable-mkv to disable the matroska plugin.])
          ])
        ])
      ],
      [AC_MSG_RESULT([no])
        AC_MSG_ERROR([Your libebml is too old: you may get a more recent one from http://dl.matroska.org/downloads/libebml/. Alternatively you can use --disable-mkv to disable the matroska plugin.])
    ])
  ])
  AC_LANG_POP(C++)
fi

dnl
dnl  modplug demux plugin
dnl
AC_ARG_ENABLE(mod,
  [  --enable-mod            Mod demux support (default enabled)])
if test "${enable_mod}" != "no"
then
  AC_ARG_WITH(mod-tree,
  [    --with-mod-tree=PATH mod tree for static linking])
  if test -n "${with_mod_tree}"
  then
    AC_MSG_CHECKING(for libmodplug.a in ${with_mod_tree})
    real_mod_tree="`cd ${with_mod_tree} 2>/dev/null && pwd`"
    if test -z "${real_mod_tree}"
    then
      dnl  The given directory can't be found
      AC_MSG_RESULT(no)
      AC_MSG_ERROR([cannot cd to ${with_mod_tree}])
    fi
    if test -f "${real_mod_tree}/src/.libs/libmodplug.a"
    then
      dnl  Use a custom mod
      AC_MSG_RESULT(${real_mod_tree}/src/.libs/libmodplug.a)
      VLC_ADD_PLUGINS([mod])
      VLC_ADD_LDFLAGS([mod],[${real_mod_tree}/src/.libs/libmodplug.a -lstdc++])
      VLC_ADD_CXXFLAGS([mod],[-I${real_mod_tree}/include])
    else
      dnl  The given mod wasn't built
      AC_MSG_RESULT(no)
      AC_MSG_ERROR([cannot find ${real_mod_tree}/src/.libs/libmodplug.a, make sure you compiled mod in ${with_mod_tree}])
    fi
  else
    AC_CHECK_HEADERS(libmodplug/modplug.h, [
      VLC_ADD_PLUGINS([mod])
      VLC_ADD_CXXFLAGS([mod],[])
      VLC_ADD_LDFLAGS([mod],[-lmodplug -lstdc++])])
  fi
fi

dnl
dnl  mpc demux plugin
dnl
AC_ARG_ENABLE(mpc,
  [  --enable-mpc            Mpc demux support (default enabled)])
if test "${enable_mpc}" != "no"
then
  AC_CHECK_HEADERS(mpcdec/mpcdec.h, [
    VLC_ADD_PLUGINS([mpc])
    VLC_ADD_LDFLAGS([mpc],[-lmpcdec])])
fi

dnl
dnl  game music emu demux plugin
dnl
AC_ARG_ENABLE(gme,
  [  --enable-gme            Game Music Emu demux support (default enabled)])
if test "${enable_gme}" != "no" -a "${CXX}" != "";
then
  AC_LANG_PUSH(C++)
  AC_ARG_WITH(gme-tree,
  [    --with-gme-tree=PATH gme tree for static linking])
  if test -n "${with_gme_tree}"
  then
    AC_MSG_CHECKING(for libgme.a in ${with_mod_tree})
    real_gme_tree="`cd ${with_gme_tree} 2>/dev/null && pwd`"
    if test -z "${real_gme_tree}"
    then
      dnl  The given directory can't be found
      AC_MSG_RESULT(no)
      AC_MSG_ERROR([cannot cd to ${with_gme_tree}])
    fi
    if test -f "${real_gme_tree}/gme/libgme.a"
    then
      dnl  Use a custom gme
      AC_MSG_RESULT(${real_gme_tree}/gme/libgme.a)
      VLC_ADD_PLUGINS([gme])
      VLC_ADD_LDFLAGS([gme],[${real_gme_tree}/gme/libgme.a])
      VLC_ADD_CXXFLAGS([gme],[-I${real_gme_tree}/gme])
    else
      dnl  The given gme wasn't built
      AC_MSG_RESULT(no)
      AC_MSG_ERROR([cannot find ${real_mod_tree}/gme/libgme.a, make sure you compiled gme in ${with_gme_tree}])
    fi
  else
      AC_MSG_WARN([only static linking is available, you must provide a gme-tree])
  fi
  AC_LANG_POP(C++)
fi

dnl
dnl  Codec plugins
dnl

AC_ARG_WITH(,[Codec plugins:])

dnl
dnl  mad plugin
dnl
AC_ARG_ENABLE(mad,
  [  --enable-mad            libmad module (default enabled)])
if test "${enable_mad}" != "no"
then
  AC_ARG_WITH(mad,
    [    --with-mad=PATH       path to libmad],[],[])
  if test "${with_mad}" != "no" -a -n "${with_mad}"
  then
    VLC_ADD_CPPFLAGS([mpgatofixed32],[-I${with_mad}/include])
    VLC_ADD_LDFLAGS([mpgatofixed32],[-L${with_mad}/lib])
  fi

  AC_ARG_WITH(mad-tree,
    [    --with-mad-tree=PATH   mad tree for static linking],[],[])
  if test "${with_mad_tree}" != "no" -a -n "${with_mad_tree}"
  then
    real_mad_tree="`cd ${with_mad_tree} 2>/dev/null && pwd`"
    if test -z "${real_mad_tree}"
    then
      dnl  The given directory can't be found
      AC_MSG_RESULT(no)
      AC_MSG_ERROR([${with_mad_tree} directory doesn't exist])
    fi
    dnl  Use a custom libmad
    AC_MSG_CHECKING(for mad.h in ${real_mad_tree})
    if test -f ${real_mad_tree}/mad.h
    then
      AC_MSG_RESULT(yes)
      VLC_ADD_CPPFLAGS([mpgatofixed32],[-I${real_mad_tree}])
      VLC_ADD_LDFLAGS([mpgatofixed32],[-L${real_mad_tree}/.libs])
      LDFLAGS="${LDFLAGS_save} ${LDFLAGS_mpgatofixed32}"
      AC_CHECK_LIB(mad, mad_bit_init, [
        VLC_ADD_BUILTINS([mpgatofixed32])
        VLC_ADD_LDFLAGS([mpgatofixed32],[-lmad])
        ],[ AC_MSG_ERROR([the specified tree hasn't been compiled ])
      ],[])
      LDFLAGS="${LDFLAGS_save}"
    else
      AC_MSG_RESULT(no)
      AC_MSG_ERROR([the specified tree doesn't have mad.h])
    fi
  else
    CPPFLAGS="${CPPFLAGS_save} ${CPPFLAGS_mpgatofixed32}"
    LDFLAGS="${LDFLAGS_save} ${LDFLAGS_mpgatofixed32}"
    AC_CHECK_HEADERS(mad.h, ,
      [ AC_MSG_ERROR([Could not find libmad on your system: you may get it from http://www.underbit.com/products/mad/. Alternatively you can use --disable-mad to disable the mad plugin.]) ])
    AC_CHECK_LIB(mad, mad_bit_init, [
      VLC_ADD_PLUGINS([mpgatofixed32])
      VLC_ADD_LDFLAGS([mpgatofixed32],[-lmad])],
      [ AC_MSG_ERROR([Cannot find libmad library...]) ])
    CPPFLAGS="${CPPFLAGS_save}"
    LDFLAGS="${LDFLAGS_save}"
  fi
fi

dnl
dnl   libid3tag support (FIXME!!! doesn't work with new input)
dnl
AC_CHECK_HEADERS(id3tag.h, [
  AC_CHECK_HEADERS(zlib.h, [
    VLC_ADD_LDFLAGS([id3tag],[-lid3tag -lz])
    VLC_ADD_PLUGINS([id3tag])]) ])

dnl
dnl  ffmpeg decoder/demuxer plugin
dnl
dnl we try to find ffmpeg using : 1- given tree 2- ffmpeg-config, 3- pkg-config
dnl 				4- default place, 

AC_ARG_ENABLE(ffmpeg,
[  --enable-ffmpeg         ffmpeg codec (default enabled)])
if test "${enable_ffmpeg}" != "no"
then

dnl Those options have to be here because the .pc can be bogus for ffmpeg previous nov 05

 AC_ARG_WITH(ffmpeg-mp3lame,
   [    --with-ffmpeg-mp3lame specify if ffmpeg has been compiled with mp3lame support],
   [
     if test "$with_ffmpeg_mp3lame" = "yes";	then
     	VLC_ADD_LDFLAGS([ffmpeg],[-lmp3lame])
     fi])

 AC_ARG_WITH(ffmpeg-faac,
   [    --with-ffmpeg-faac    specify if ffmpeg has been compiled with faac support],
   [
     if test "$with_ffmpeg_faac" = "yes"; then
     	VLC_ADD_LDFLAGS([ffmpeg],[-lfaac])
     fi])

 AC_ARG_WITH(ffmpeg-dts,
   [    --with-ffmpeg-dts     specify if ffmpeg has been compiled with dts support],
   [
     if test "$with_ffmpeg_dts" = "yes"; then
             LDFLAGS="${LDFLAGS_save} ${LDFLAGS_ffmpeg}"
             AC_CHECK_LIB(dts_pic, dts_free, 
               [ VLC_ADD_LDFLAGS([ffmpeg],[-ldts_pic]) ],
               [ VLC_ADD_LDFLAGS([ffmpeg],[-ldts]) ])
             LDFLAGS="${LDFLAGS_save}"
     fi])

 AC_ARG_WITH(ffmpeg-vorbis,
   [    --with-ffmpeg-vorbis    specify if ffmpeg has been compiled with vorbis support],
   [
     if test "$with_ffmpeg_vorbis" = "yes"; then
        VLC_ADD_LDFLAGS([ffmpeg],[-lvorbisenc -lvorbis])
     fi])

 AC_ARG_WITH(ffmpeg-theora,
   [    --with-ffmpeg-theora    specify if ffmpeg has been compiled with theora support],
   [
     if test "$with_ffmpeg_theora" = "yes"; then
        VLC_ADD_LDFLAGS([ffmpeg],[-ltheora])
     fi])

 AC_ARG_WITH(ffmpeg-ogg,
   [    --with-ffmpeg-ogg    specify if ffmpeg has been compiled with ogg support],
   [
     if test "$with_ffmpeg_ogg" = "yes"; then
        VLC_ADD_LDFLAGS([ffmpeg],[-logg])
     fi])

 AC_ARG_WITH(ffmpeg-zlib,
   [    --with-ffmpeg-zlib    specify if ffmpeg has been compiled with zlib support],
   [
     if test "$with_ffmpeg_zlib" = "yes"; then
		VLC_ADD_LDFLAGS([ffmpeg],[-lz])
     fi])

 dnl
 dnl test for --with-ffmpeg-tree
 dnl
 AC_ARG_WITH(ffmpeg-tree,
   [    --with-ffmpeg-tree=PATH ffmpeg tree for static linking])

 if test "${with_ffmpeg_tree}" != "no" -a -n "${with_ffmpeg_tree}"; then
   AC_MSG_CHECKING(for libavcodec.a in ${with_ffmpeg_tree})
   real_ffmpeg_tree="`cd ${with_ffmpeg_tree} 2>/dev/null && pwd`"
   if test -z "${real_ffmpeg_tree}"; then
     dnl  The given directory can't be found
     AC_MSG_RESULT(no)
     AC_MSG_ERROR([cannot cd to ${with_ffmpeg_tree}])
   fi
   if ! test -f "${real_ffmpeg_tree}/libavcodec/libavcodec.a"; then
     dnl  The given libavcodec wasn't built
     AC_MSG_RESULT(no)
     AC_MSG_ERROR([cannot find ${real_ffmpeg_tree}/libavcodec/libavcodec.a, make sure you compiled libavcodec in ${with_ffmpeg_tree}])
   fi
   if ! fgrep -s "pp_get_context" "${real_ffmpeg_tree}/libavcodec/libavcodec.a"; then
     if test -f "${real_ffmpeg_tree}/libavcodec/libpostproc/libpostproc.a"; then
       VLC_ADD_LDFLAGS([ffmpeg],[-L${real_ffmpeg_tree}/libavcodec/libpostproc ${real_ffmpeg_tree}/libavcodec/libpostproc/libpostproc.a])	
     elif test -f "${real_ffmpeg_tree}/libpostproc/libpostproc.a"; then 
	VLC_ADD_LDFLAGS([ffmpeg],[-L${real_ffmpeg_tree}/libpostproc ${real_ffmpeg_tree}/libpostproc/libpostproc.a])
        VLC_ADD_CPPFLAGS([ffmpeg stream_out_switcher],[-I${real_ffmpeg_tree}])
     else
       dnl  The given libavcodec wasn't built with --enable-pp
       AC_MSG_RESULT(no)
       AC_MSG_ERROR([cannot find libpostproc.a in ${real_ffmpeg_tree}/[libavcodec/]libpostproc/. Make sure you configured ffmpeg with --enable-pp])
     fi
   fi
   dnl  Use a custom libffmpeg
   AC_MSG_RESULT(${real_ffmpeg_tree}/libavcodec/libavcodec.a)

   if fgrep -s "CONFIG_ZLIB=yes" "${real_ffmpeg_tree}/config.mak"; then
     if test "${with_ffmpeg_zlib}" != "yes"; then
       VLC_ADD_LDFLAGS([ffmpeg],[-lz])
     fi
   fi
   if fgrep -s "CONFIG_MP3LAME=yes" "${real_ffmpeg_tree}/config.mak"; then
     if test "${with_ffmpeg_mp3lame}" != "yes"; then
       VLC_ADD_LDFLAGS([ffmpeg],[-lmp3lame])
     fi
   fi
   if fgrep -s "CONFIG_FAAC=yes" "${real_ffmpeg_tree}/config.mak"; then
     if test "${with_ffmpeg_faac}" != "yes"; then
       VLC_ADD_LDFLAGS([ffmpeg],[-lfaac])
     fi
   fi
   if fgrep -s "CONFIG_DTS=yes" "${real_ffmpeg_tree}/config.mak"; then
     if test "${with_ffmpeg_dts}" != "yes"; then
       LDFLAGS="${LDFLAGS_save} ${LDFLAGS_ffmpeg}"
       AC_CHECK_LIB(dts_pic, dts_free, 
         [ VLC_ADD_LDFLAGS([ffmpeg],[-ldts_pic]) ],
         [ VLC_ADD_LDFLAGS([ffmpeg],[-ldts]) ])
       LDFLAGS="${LDFLAGS_save}"
     fi
   fi
   if fgrep -s "CONFIG_VORBIS=yes" "${real_ffmpeg_tree}/config.mak"; then
     VLC_ADD_LDFLAGS([ffmpeg],[-lvorbis -lvorbisenc])
   fi
   if fgrep -s "CONFIG_FAAD=yes" "${real_ffmpeg_tree}/config.mak"; then
     VLC_ADD_LDFLAGS([ffmpeg],[-lfaad])
   fi
   if fgrep -s "CONFIG_XVID=yes" "${real_ffmpeg_tree}/config.mak"; then
     VLC_ADD_LDFLAGS([ffmpeg],[-lxvidcore])
   fi

   VLC_ADD_BUILTINS([ffmpeg])
   if test "${enable_sout}" != "no" -a "${enable_switcher}" = "yes" ; then
     VLC_ADD_BUILTINS([stream_out_switcher])
   fi

   if test -f "${real_ffmpeg_tree}/libavutil/libavutil.a"; then
     VLC_ADD_LDFLAGS([ffmpeg],[-L${real_ffmpeg_tree}/libavutil ${real_ffmpeg_tree}/libavutil/libavutil.a])
     VLC_ADD_CPPFLAGS([ffmpeg stream_out_switcher],[-I${real_ffmpeg_tree}/libavutil])
   fi

   VLC_ADD_LDFLAGS([ffmpeg],[-L${real_ffmpeg_tree}/libavcodec ${real_ffmpeg_tree}/libavcodec/libavcodec.a])
   VLC_ADD_CPPFLAGS([ffmpeg stream_out_switcher],[-I${real_ffmpeg_tree}/libavcodec])

   if test -f "${real_ffmpeg_tree}/libavformat/libavformat.a"; then
     AC_DEFINE(HAVE_LIBAVFORMAT_TREE, 1, [Define if you have ffmpeg's libavformat.])
     VLC_ADD_LDFLAGS([ffmpeg],[-L${real_ffmpeg_tree}/libavformat ${real_ffmpeg_tree}/libavformat/libavformat.a])
     VLC_ADD_CPPFLAGS([ffmpeg stream_out_switcher],[-I${real_ffmpeg_tree}/libavformat])
   fi

   if test -f "${real_ffmpeg_tree}/libswscale/libswscale.a"; then
     AC_DEFINE(HAVE_LIBSWSCALE_TREE, 1, [Define if you have ffmpeg's libswscale.])
     VLC_ADD_LDFLAGS([ffmpeg],[-L${real_ffmpeg_tree}/libswscale ${real_ffmpeg_tree}/libswscale/libswscale.a])
     VLC_ADD_CPPFLAGS([ffmpeg stream_out_switcher],[-I${real_ffmpeg_tree}/libswscale])
   fi
else    
    
dnl Look for a ffmpeg-config (we are on debian )
 
  FFMPEG_PATH="${PATH}"
  AC_ARG_WITH(ffmpeg-config-path,
    [    --with-ffmpeg-config-path=PATH ffmpeg-config path (default search in \$PATH)],
    [ if test "${with_ffmpeg_config_path}" != "no"
      then
        FFMPEG_PATH="${with_ffmpeg_config_path}"
      fi ])
  AC_PATH_PROG(FFMPEG_CONFIG, ffmpeg-config, no, ${FFMPEG_PATH})
  if test "${FFMPEG_CONFIG}" != "no"
  then
    AC_CHECK_HEADERS(ffmpeg/avcodec.h, [], [AC_MSG_ERROR([Missing header file ffmpeg/avcodec.h.])] )
    AC_CHECK_HEADERS(ffmpeg/avformat.h)
    AC_CHECK_HEADERS(ffmpeg/avutil.h)
    AC_CHECK_HEADERS(postproc/postprocess.h, [], [AC_MSG_ERROR([Missing header file postproc/postprocess.h.])] )
    VLC_ADD_PLUGINS([ffmpeg])
    if test "${enable_sout}" != "no" -a "${enable_switcher}" = "yes"; then
        VLC_ADD_PLUGINS([stream_out_switcher])
    fi
    VLC_ADD_CFLAGS([ffmpeg stream_out_switcher],[`${FFMPEG_CONFIG} --cflags`])
    VLC_ADD_LDFLAGS([ffmpeg stream_out_switcher],[`${FFMPEG_CONFIG} --plugin-libs avcodec avformat postproc`])
 
 else

dnl Trying with pkg-config
   PKG_CHECK_MODULES(FFMPEG,[libavcodec, libavformat],
    [
     VLC_SAVE_FLAGS
     CPPFLAGS="${CPPFLAGS} ${FFMPEG_CFLAGS}"
     CFLAGS="${CFLAGS} ${FFMPEG_CFLAGS}"
     AC_CHECK_HEADERS(ffmpeg/avcodec.h, [], [AC_MSG_ERROR([Missing header file ffmpeg/avcodec.h.])] )
     AC_CHECK_HEADERS(ffmpeg/avformat.h)
     AC_CHECK_HEADERS(ffmpeg/avutil.h)
     dnl newer ffmpeg have a separate libpostproc
     PKG_CHECK_MODULES(POSTPROC, libpostproc,[
       VLC_ADD_CFLAGS([ffmpeg],[${POSTPROC_CFLAGS}]) 
       VLC_ADD_LDFLAGS([ffmpeg],[${POSTPROC_LIBS}]) 
       ],[ true ])
     CPPFLAGS="${CPPFLAGS} ${POSTPROC_CFLAGS}"
     CFLAGS="${CFLAGS} ${POSTPROC_CFLAGS}"
     AC_CHECK_HEADERS(postproc/postprocess.h, [], [AC_MSG_ERROR([Missing header file postproc/postprocess.h.])] )
     if test "${SYS}" = "darwin"; then
        VLC_ADD_BUILTINS([ffmpeg])
     else
        VLC_ADD_PLUGINS([ffmpeg])
     fi
     if test "${enable_sout}" != "no" -a "${enable_switcher}" = "yes"; then
        if test "${SYS}" = "darwin"; then
            VLC_ADD_BUILTINS([stream_out_switcher])
        else
            VLC_ADD_PLUGINS([stream_out_switcher])
        fi
     fi
     VLC_ADD_CFLAGS([ffmpeg stream_out_switcher],[${FFMPEG_CFLAGS}])
     VLC_ADD_LDFLAGS([ffmpeg stream_out_switcher],[${FFMPEG_LIBS}])
     dnl even newer ffmpeg has a libswscale
     PKG_CHECK_MODULES(SWSCALE, libswscale,[
       VLC_ADD_CFLAGS([ffmpeg],[${SWSCALE_CFLAGS}]) 
       VLC_ADD_LDFLAGS([ffmpeg],[${SWSCALE_LIBS}]) 
       AC_CHECK_HEADERS(ffmpeg/swscale.h)
       ],[ true ])
     VLC_RESTORE_FLAGS
    ],[
     
    dnl
    dnl last chance: at the default place
    dnl
      CPPFLAGS="${CPPFLAGS_save} ${CPPFLAGS_ffmpeg}"
      LDFLAGS="${LDFLAGS_save} ${LDFLAGS_ffmpeg}"
      AC_CHECK_HEADERS(ffmpeg/avcodec.h, [], [AC_MSG_ERROR([Missing header file ffmpeg/avcodec.h.])] )
      AC_CHECK_HEADERS(ffmpeg/avformat.h)
      AC_CHECK_HEADERS(ffmpeg/avutil.h)
      AC_CHECK_HEADERS(postproc/postprocess.h, [], [AC_MSG_ERROR([Missing header file postproc/postprocess.h.])] )

      AC_CHECK_LIB(avutil, av_crc_init, [
        VLC_ADD_LDFLAGS([ffmpeg],[-lavutil])
        LDAVUTIL="-lavutil"])

      AC_CHECK_LIB(avcodec, avcodec_init, [
        VLC_ADD_BUILTINS([ffmpeg])
        VLC_ADD_LDFLAGS([ffmpeg],[-lavcodec])
        if test "${enable_sout}" != "no" -a "${enable_switcher}" = "yes"; then
            VLC_ADD_BUILTINS([stream_out_switcher])
        fi],
         [ AC_MSG_ERROR([Could not find ffmpeg on your system: you may get it from http://ffmpeg.sf.net/ (svn version is recommended). Alternatively you can use --disable-ffmpeg to disable the ffmpeg plugins.]) ], [$LDAVUTIL])

      
      AC_CHECK_LIB(postproc, pp_postprocess, [
        VLC_ADD_LDFLAGS([ffmpeg],[-lpostproc])],
	AC_MSG_ERROR([Could not find libpostproc inside FFmpeg. You should configure FFmpeg with --enable-gpl --enable-pp.]),
	[$LDAVUTIL])

      AC_CHECK_LIB(avformat, av_open_input_stream, [
        VLC_ADD_LDFLAGS([ffmpeg],[-lavformat -lz]) ], [], [-lavcodec -lz $LDAVUTIL])
      LDFLAGS="${LDFLAGS_save}"
      CPPFLAGS="${CPPFLAGS_save}"

      AC_CHECK_LIB(swscale, sws_getContext, [
        AC_CHECK_HEADERS(ffmpeg/swscale.h)
        VLC_ADD_LDFLAGS([ffmpeg],[-lswscale]) ], [], [-lavcodec $LDAVUTIL])
      LDFLAGS="${LDFLAGS_save}"
      CPPFLAGS="${CPPFLAGS_save}"
    ])
  fi
 fi 
fi

dnl
dnl  ffmpegaltivec plugin
dnl
AC_ARG_ENABLE(ffmpegaltivec,
[  --enable-ffmpegaltivec  ffmpegaltivec codec (DO NOT USE)])
if test "${enable_ffmpegaltivec}" = "yes"
then
  if test "${with_ffmpeg_tree}" != "no" -a -n "${with_ffmpeg_tree}"; then
    AC_MSG_CHECKING(for libavcodecaltivec.a in ${with_ffmpeg_tree})
    real_ffmpeg_tree="`cd ${with_ffmpeg_tree} 2>/dev/null && pwd`"
    if test -z "${real_ffmpeg_tree}"; then
      dnl  The given directory can't be found
      AC_MSG_RESULT(no)
      AC_MSG_ERROR([cannot cd to ${with_ffmpeg_tree}])
    fi
    if ! test -f "${real_ffmpeg_tree}/libavcodec/libavcodecaltivec.a"; then
      dnl  The given libavcodecaltivec wasn't built