configure.ac

dnl Autoconf settings for vlc
dnl $Id: configure.ac,v 1.27 2003/07/07 16:59:00 sam Exp $

AC_INIT(vlc,0.6.0)

CONFIGURE_LINE="$0 $*"
CODENAME="Trevelyan"

AC_PREREQ(2.50)
AC_CONFIG_SRCDIR(src/libvlc.c)
AC_CONFIG_AUX_DIR(autotools)
AC_CANONICAL_SYSTEM

dnl XXX: we don't put any flags here, because automake 1.5 doesn't support
dnl them. And we need the comma otherwize automake will choke on it.
AM_INIT_AUTOMAKE(vlc,0.6.0)
AM_CONFIG_HEADER(config.h)

dnl
dnl  Save *FLAGS
dnl
AX_SAVE_FLAGS

dnl
dnl Check for tools
dnl
AC_PROG_CC
AM_PROG_CC_C_O
AC_PROG_CPP
AC_PROG_CXX
AC_PROG_MAKE_SET
AC_PROG_INSTALL

dnl AC_PROG_EGREP only exists in autoconf 2.54+, so we use AC_EGREP_CPP right
dnl now otherwise it might be set in an obscure if statement.
AC_EGREP_CPP(foo,foo)

dnl AC_PROG_OBJC doesn't seem to exist, this is the KDE workaround
AC_MSG_CHECKING(for an Objective-C compiler)
OBJC="${CXX}"
AC_SUBST(OBJC)
OBJCFLAGS="${CXXFLAGS} -fgnu-runtime -fconstant-string-class=NSConstantString"
AC_SUBST(OBJCFLAGS)
dnl _AM_DEPENDENCIES(OBJC) doesn't work, so hard code OBJCDEPMODE here
#OBJCDEPMODE="depmode=gcc3"
#AC_SUBST(OBJCDEPMODE)
_AM_DEPENDENCIES(OBJC)
AC_MSG_RESULT(not implemented yet)

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, :)

dnl AM_PROG_LIBTOOL
AC_PROG_INSTALL

dnl Check for compiler properties
AC_C_CONST
AC_C_INLINE

dnl
dnl  Set default values
dnl
LDFLAGS_vlc="${LDFLAGS}"
LIBEXT=".so"

dnl
dnl  Check the operating system
dnl
case "${target_os}" in
  "")
    SYS=unknown
    ;;
  linux*)
    SYS=linux
    ;;
  bsdi*)
    SYS=bsdi
    CFLAGS_save="${CFLAGS_save} -pthread"; CFLAGS="${CFLAGS_save}"
    AX_ADD_LDFLAGS([dvd dvdcss vcd cdda],[-ldvd])
    ;;
  *bsd*)
    SYS="${target_os}"
    CFLAGS_save="${CFLAGS_save} -pthread"; CFLAGS="${CFLAGS_save}"
    ;;
  darwin*)
    SYS=darwin
    CFLAGS_save="${CFLAGS_save} -no-cpp-precomp -D_INTL_REDIRECT_MACROS"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="${CXXFLAGS_save} -no-cpp-precomp -D_INTL_REDIRECT_MACROS"; CXXFLAGS="${CXXFLAGS_save}"
    OBJCFLAGS_save="${OBJCFLAGS_save} -no-cpp-precomp -D_INTL_REDIRECT_MACROS"; OBJCFLAGS="${OBJCFLAGS_save}"
    AX_ADD_LDFLAGS([vlc ffmpeg],[-all_load])
    AX_ADD_LDFLAGS([vlc],[-Wl,-multiply_defined,suppress])
    LIBEXT=".dylib"
    ;;
  *mingw32* | *cygwin*)
    AC_CHECK_TOOL(WINDRES, windres, :)
    LIBEXT=".dll"

    case "${target_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)
        ;;
    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="${CPPFLAGS_save}"
        AX_ADD_LDFLAGS([vlc],[-lws2_32 -lnetapi32 -lwinmm -mwindows])
        AX_ADD_LDFLAGS([ipv4 ipv6 access_http access_mms access_udp access_ftp access_output_udp sap slp http httpd],[-lws2_32])
    fi
    ;;
  *nto*)
    SYS=nto
    AX_ADD_LDFLAGS([x11 xvideo],[-lsocket])
    ;;
  solaris*)
    SYS=solaris
    ;;
  hpux*)
    SYS=hpux
    LIBEXT=".sl"
    ;;
  beos)
    SYS=beos
    CFLAGS_save="${CFLAGS_save} -Wno-multichar"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="${CXXFLAGS_save} -Wno-multichar"; CXXFLAGS="${CXXFLAGS_save}"
    AX_ADD_LDFLAGS([vlc beos],[-lbe])
    AX_ADD_CXXFLAGS([beos],[])
    AX_ADD_LDFLAGS([beos],[-lmedia -ltranslation -ltracker -lgame])
    dnl Check if we have BONE (old net_server doesn't have libsocket.so)
    AC_CHECK_LIB(socket, connect,
        AX_ADD_LDFLAGS([vlc access_mms ipv4 httpd],[-lsocket -lbind]))
    ;;
  *)
    SYS="${target_os}"
    ;;
esac
AM_CONDITIONAL(HAVE_BEOS, test "${SYS}" = "beos")
AM_CONDITIONAL(HAVE_DARWIN, test "${SYS}" = "darwin")
AM_CONDITIONAL(HAVE_WIN32, test "${SYS}" = "mingw32")

dnl
dnl Gettext stuff
dnl
ALL_LINGUAS="de en_GB fr it ja no ru nl pl sv"
AM_GNU_GETTEXT_VERSION(0.11.5)
AM_GNU_GETTEXT
if test "${nls_cv_force_use_gnu_gettext}" = "yes"; then
  AC_DEFINE(HAVE_INCLUDED_GETTEXT, 1, Define if we use the local libintl)
  INCLUDES="${INCLUDES} -I\$(top_builddir)/intl"
else
  AC_CHECK_FUNCS(textdomain,,[
    AC_CHECK_LIB(intl,textdomain,
      AX_ADD_LDFLAGS([vlc],[${LIBINTL}]),,
      ${LIBINTL}
    )
  ])
fi
AM_CONDITIONAL(BUILD_INTL, test "${nls_cv_force_use_gnu_gettext}" = "yes")
XGETTEXT="${XGETTEXT} --keyword=_NS --keyword=_ANS"

AC_MSG_CHECKING(for suffix of libraries)
AC_MSG_RESULT(${LIBEXT})

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,AX_ADD_LDFLAGS([vlc],[]),
            [AX_ADD_LDFLAGS([vlc 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 "${SYS}" = "mingw32"
then
AC_LANG_PUSH(C++)
    AC_CACHE_CHECK([if \$CXX accepts -fvtable-thunks],
        [ac_cv_cxx_fvtable_thunks],
        [CXXFLAGS="${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 Flags for plugin compilation
case "${SYS}" in
  mingw32|cygwin)
    AX_ADD_CFLAGS([pic plugin mozilla],[${CFLAGS_mingw32_special}])
    AX_ADD_CXXFLAGS([pic plugin mozilla],[${CFLAGS_mingw32_special} ${CXXFLAGS_mingw32_special}])
    AX_ADD_OBJCFLAGS([pic plugin mozilla],[${CFLAGS_mingw32_special}])
    ;;
  *)
    AX_ADD_CFLAGS([pic plugin mozilla],[-fpic -fPIC])
    AX_ADD_CXXFLAGS([pic plugin mozilla],[-fpic -fPIC])
    AX_ADD_OBJCFLAGS([pic plugin mozilla],[-fpic -fPIC])
    AX_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 select strerror strtod strtol isatty vasprintf swab sigrelse getpwuid memalign posix_memalign gethostbyname2 if_nametoindex atoll getenv putenv setenv gmtime_r)

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

AC_CHECK_FUNCS(connect,,[
  AC_CHECK_LIB(socket,connect,[
    AX_ADD_LDFLAGS([vlc ipv4],-lsocket)
  ])
])

AC_CHECK_FUNCS(send,,[
  AC_CHECK_LIB(socket,send,[
    AX_ADD_LDFLAGS([access_http access_mms access_udp access_ftp sap http access_output_udp],[-lsocket])
  ])
])

AC_CHECK_FUNCS(gethostbyname,,[
  AC_CHECK_LIB(nsl,gethostbyname,[
    AX_ADD_LDFLAGS([ipv4 httpd vlc],[-lnsl])
  ],[
    AC_CHECK_LIB(bind,gethostbyname,[
      AX_ADD_LDFLAGS([ipv4 httpd],[-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 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,[
    AX_ADD_LDFLAGS([ipv4 httpd],[-lresolv])
  ])
])

dnl Check for getopt
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)
     AX_ADD_LDFLAGS([vlc],[-lgnugetopt])],
    [need_getopt=:])])
AM_CONDITIONAL(BUILD_GETOPT, ${need_getopt})

if test "${SYS}" != "mingw32"; then
AC_TYPE_SIGNAL
AC_CHECK_LIB(dl,dlopen,[
  AX_ADD_LDFLAGS([vlc],[-ldl])
])
AC_CHECK_LIB(m,cos,[
  AX_ADD_LDFLAGS([imdct adjust distort a52tofloat32],[-lm])
])
AC_CHECK_LIB(m,pow,[
  AX_ADD_LDFLAGS([ffmpeg stream_out_transcode imdct imdct3dn imdctsse i420_rgb faad],[-lm])
])
AC_CHECK_LIB(m,sqrt,[
  AX_ADD_LDFLAGS([headphone_channel_mixer],[-lm])
])
fi # end "${SYS}" != "mingw32"

if test "${SYS}" != "mingw32"; then
dnl Check for pthreads - borrowed from XMMS
THREAD_LIB=error
if test "${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
])

AX_ADD_LDFLAGS([vlc plugin],[${THREAD_LIB}])

dnl Don't link with rt when using GNU-pth
if test "${THREAD_LIB}" != "-lpth" && test "${THREAD_LIB}" != "-lst"; then
  dnl HP/UX port
  AC_CHECK_LIB(rt,sem_init, [AX_ADD_LDFLAGS([vlc],[-lrt])])

  have_nanosleep=false
  AC_CHECK_FUNCS(nanosleep,have_nanosleep=:,[
    AC_CHECK_LIB(rt,nanosleep,
      [AX_ADD_LDFLAGS([vlc],[-lrt]) have_nanosleep=:],
      [AC_CHECK_LIB(posix4,nanosleep,
          [AX_ADD_LDFLAGS([vlc],[-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"

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 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(dlfcn.h image.h)
AC_CHECK_HEADERS(arpa/inet.h net/if.h netinet/in.h sys/socket.h)
if test "${SYS}" != "mingw32"; then
AC_CHECK_HEADERS(machine/param.h sys/shm.h)
AC_CHECK_HEADERS(linux/version.h)
fi # end "${SYS}" != "mingw32"

AC_HEADER_TIME

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 "${SYS}" != "mingw32"; then
AC_MSG_CHECKING(for nanosleep in time.h)
AC_EGREP_HEADER(nanosleep,time.h,[
  AC_MSG_RESULT(yes)
  AC_DEFINE(HAVE_DECL_NANOSLEEP, 1,
            Define if <time.h> defines nanosleep.)
],[
  AC_MSG_RESULT(no)
])
fi # end "${SYS}" != "mingw32"

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 "${SYS}" != "mingw32"; then
AC_CHECK_HEADERS(cthreads.h pthread.h kernel/scheduler.h kernel/OS.h)
fi # end "${SYS}" != "mingw32"

dnl Default X headers and libraries
if test "${x_includes}" = "NONE"; then
  x_includes="/usr/X11R6/include"
fi
if test "${x_libraries}" = "NONE"; then
  x_libraries="/usr/X11R6/lib"
fi

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="${CFLAGS_save} -Wall -Werror"
     AC_TRY_COMPILE([#include <sys/param.h>],
        [void foo() { int meuh; ntohl(meuh); }],
        ac_cv_c_ntohl_sys_param_h=yes, ac_cv_c_ntohl_sys_param_h=no)])
if test "${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

dnl Check for inline function size limit
AC_CACHE_CHECK([if \$CC accepts -finline-limit],
    [ac_cv_c_inline_limit],
    [CFLAGS="${CFLAGS_save} -finline-limit-30000"
     AC_TRY_COMPILE([],,ac_cv_c_inline_limit=yes, ac_cv_c_inline_limit=no)])
if test "${ac_cv_c_inline_limit}" != "no"; then
    CFLAGS_save="${CFLAGS_save} -finline-limit-30000"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="${CXXFLAGS_save} -finline-limit-30000"; CXXFLAGS="${CXXFLAGS_save}"
    OBJCFLAGS_save="${OBJCFLAGS_save} -finline-limit-30000"; OBJCFLAGS="${OBJCFLAGS_save}"
fi

# XXX: do this with an M4 macro?
#dnl Check for various -W flags
#for flag in "" all unreachable-code conversion sign-compare disabled-optimization
#do
#    AC_CACHE_CHECK([if \$CC accepts -W${flag}],
#        [ac_cv_c_W${flag}],
#        [CFLAGS="-W${flag} ${CFLAGS_save}"
#         AC_TRY_COMPILE([],,ac_cv_c_W${flag}=yes, ac_cv_c_W${flag}=no)])
#    if test "${ac_cv_c_W${flag}}" != "no"; then
#        CFLAGS_save="-W${flag} ${CFLAGS_save}"; CFLAGS="${CFLAGS_save}"
#        CXXFLAGS_save="-W${flag} ${CFLAGS_save}"; CXXFLAGS="${CXXFLAGS_save}"
#        OBJCFLAGS_save="-W${flag} ${OBJCFLAGS_save}"; OBJCFLAGS="${OBJCFLAGS_save}"
#    fi
#done

AC_CACHE_CHECK([if \$CC accepts -Wall],
    [ac_cv_c_Wall],
    [CFLAGS="-Wall ${CFLAGS_save}"
     AC_TRY_COMPILE([],,ac_cv_c_Wall=yes, ac_cv_c_Wall=no)])

AC_CACHE_CHECK([if \$CC accepts -Wconversion],
    [ac_cv_c_Wconversion],
    [CFLAGS="-Wconversion ${CFLAGS_save}"
     AC_TRY_COMPILE([],,ac_cv_c_Wconversion=yes, ac_cv_c_Wconversion=no)])

AC_CACHE_CHECK([if \$CC accepts -Wunreachable-code],
    [ac_cv_c_Wunreachable_code],
    [CFLAGS="-Wunreachable-code ${CFLAGS_save}"
     AC_TRY_COMPILE([],,ac_cv_c_Wunreachable_code=yes, ac_cv_c_Wunreachable_code=no)])

AC_CACHE_CHECK([if \$CC accepts -Wsign-compare],
    [ac_cv_c_Wsign_compare],
    [CFLAGS="-Wsign-compare ${CFLAGS_save}"
     AC_TRY_COMPILE([],,ac_cv_c_Wsign_compare=yes, ac_cv_c_Wsign_compare=no)])

if test "${ac_cv_c_Wall}" != "no"; then
    CFLAGS_save="-Wall ${CFLAGS_save}"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="-Wall ${CFLAGS_save}"; CXXFLAGS="${CXXFLAGS_save}"
    OBJCFLAGS_save="-Wall ${OBJCFLAGS_save}"; OBJCFLAGS="${OBJCFLAGS_save}"
fi

if test "${ac_cv_c_Wsign_compare}" != "no"; then
    CFLAGS_save="-Wsign-compare ${CFLAGS_save}"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="-Wsign-compare ${CFLAGS_save}"; CXXFLAGS="${CXXFLAGS_save}"
    OBJCFLAGS_save="-Wsign-compare ${OBJCFLAGS_save}"; OBJCFLAGS="${OBJCFLAGS_save}"
fi

dnl Check for -pipe
AC_CACHE_CHECK([if \$CC accepts -pipe],
    [ac_cv_c_pipe],
    [CFLAGS="${CFLAGS_save} -pipe"
     AC_TRY_COMPILE([],,ac_cv_c_pipe=yes, ac_cv_c_pipe=no)])
if test "${ac_cv_c_pipe}" != "no"; then
    CFLAGS_save="${CFLAGS_save} -pipe"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="${CXXFLAGS_save} -pipe"; CXXFLAGS="${CXXFLAGS_save}"
    OBJCFLAGS_save="${OBJCFLAGS_save} -pipe"; OBJCFLAGS="${OBJCFLAGS_save}"
fi

dnl Check for various optimization flags
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"; 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"; 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 "${ac_cv_c_o}" != "no"; then
        if test "${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!
    AX_ADD_CFLAGS([i420_yuy2_mmx],[-fomit-frame-pointer])
fi

dnl Check for -mdynamic-no-pic
AC_CACHE_CHECK([if \$CC accepts -mdynamic-no-pic],
    [ac_cv_c_dynamic_no_pic],
    [CFLAGS="${CFLAGS_save} -mdynamic-no-pic"
     AC_TRY_COMPILE([],,ac_cv_c_dynamic_no_pic=yes, ac_cv_c_dynamic_no_pic=no)])
if test "${ac_cv_c_dynamic_no_pic}" != "no"; then
    AX_ADD_CFLAGS([builtin],[-mdynamic-no-pic])
    AX_ADD_CFLAGS([libvlc],[-mdynamic-no-pic])
fi

dnl Check for Darwin plugin linking flags
AC_CACHE_CHECK([if \$CC accepts -bundle -undefined error -lcc_dynamic],
    [ac_cv_ld_darwin],
    [CFLAGS="${CFLAGS_save} -bundle -undefined error -lcc_dynamic"
     AC_TRY_COMPILE([],,ac_cv_ld_darwin=yes, ac_cv_ld_darwin=no)])
if test "${ac_cv_ld_darwin}" != "no"; then
    AX_ADD_LDFLAGS([plugin],[-bundle -undefined error -lcc_dynamic])
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)
if test "${SYS}" = "beos"; then
  AX_ADD_LDFLAGS([plugin mozilla],[-nostart])
else
  AC_CACHE_CHECK([if \$CC accepts -shared],
      [ac_cv_ld_plugins],
      [CFLAGS="${CFLAGS_save} -shared"
       AC_TRY_COMPILE([],, ac_cv_ld_plugins=yes, ac_cv_ld_plugins=no)])
  if test "${ac_cv_ld_plugins}" != "no"; then
    AX_ADD_LDFLAGS([plugin mozilla],[-shared])
  fi
fi

dnl Check for variadic macros
AC_CACHE_CHECK([for variadic cpp macros],
    [ac_cv_cpp_variadic_macros],
    [CFLAGS="${CFLAGS_save}"
     AC_TRY_COMPILE(
         [#include <stdio.h>
          #define a(b,c...) printf(b,##c)],
         [a("foo");a("%s","bar");a("%s%s","baz","quux");],
         ac_cv_cpp_variadic_macros=yes,
         ac_cv_cpp_variadic_macros=no)])
if test "${ac_cv_cpp_variadic_macros}" != "no"; then
    AC_DEFINE(HAVE_VARIADIC_MACROS, 1, Support for variadic macros)
fi

dnl Checks for __attribute__(aligned()) directive
AC_CACHE_CHECK([__attribute__ ((aligned ())) support],
    [ac_cv_c_attribute_aligned],
    [ac_cv_c_attribute_aligned=0
        CFLAGS="${CFLAGS_save} -Werror"
    for ac_cv_c_attr_align_try in 2 4 8 16 32 64; do
        AC_TRY_COMPILE([],
        [static char c __attribute__ ((aligned(${ac_cv_c_attr_align_try}))) = 0; return c;],
        [ac_cv_c_attribute_aligned="${ac_cv_c_attr_align_try}"])
    done
        CFLAGS="${CFLAGS_save}"])
if test "${ac_cv_c_attribute_aligned}" != "0"; then
    AC_DEFINE_UNQUOTED([ATTRIBUTE_ALIGNED_MAX],
        [${ac_cv_c_attribute_aligned}],[Maximum supported data alignment])
fi

dnl Checks for __attribute__(format()) directive
AC_CACHE_CHECK([__attribute__ ((format ())) support with function pointers],
    [ac_cv_c_attribute_format],
    [ac_cv_c_attribute_format=no
        CFLAGS="${CFLAGS_save} -Werror"
        AC_TRY_COMPILE([],
        [static void (*pf_printf)(const char *, ...) __attribute__ ((format(printf,1,2)));(void)pf_printf;],
        [ac_cv_c_attribute_format=yes])
        CFLAGS="${CFLAGS_save}"])
if test "${ac_cv_c_attribute_format}" != "no"; then
    AC_DEFINE(HAVE_ATTRIBUTE_FORMAT, 1, Support for __attribute__((format())) with function pointers)
fi

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

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

case "${ARCH}" in
  hppa64)
    AX_ADD_CFLAGS([mpeg_video_old],[-ffunction-sections])
    ;;
esac

dnl
dnl  Enable profiling
dnl
AC_ARG_ENABLE(gprof,
[  --enable-gprof          gprof profiling (default disabled)])
AC_ARG_ENABLE(cprof,
[  --enable-cprof          cprof profiling (default disabled)])
test "${enable_gprof}" != "yes" && enable_gprof="no"
test "${enable_cprof}" != "yes" && enable_cprof="no"

dnl
dnl  default modules
dnl
#AX_ADD_BUILTINS([mpeg_video_old idct idctclassic motion])
AX_ADD_PLUGINS([dummy rc logger gestures memcpy])
AX_ADD_PLUGINS([es audio m4v mpeg_system ps ts avi asf aac mp4 rawdv])
AX_ADD_PLUGINS([spudec mpeg_audio lpcm a52 dts cinepak])
AX_ADD_PLUGINS([deinterlace invert adjust wall transform distort clone crop motionblur])
AX_ADD_PLUGINS([float32tos16 float32tos8 float32tou16 float32tou8 a52tospdif dtstospdif fixed32tofloat32 fixed32tos16 s16tofixed32 s16tofloat32 s16tofloat32swab s8tofloat32 u8tofixed32 u8tofloat32])
AX_ADD_PLUGINS([trivial_resampler ugly_resampler linear_resampler bandlimited_resampler])
AX_ADD_PLUGINS([trivial_channel_mixer headphone_channel_mixer])
AX_ADD_PLUGINS([trivial_mixer spdif_mixer float32_mixer])
AX_ADD_PLUGINS([aout_file])
#AX_ADD_PLUGINS([scope])
AX_ADD_PLUGINS([i420_rgb i420_yuy2 i422_yuy2 i420_ymga])
AX_ADD_PLUGINS([id3 m3u])
AX_ADD_PLUGINS([rawvideo])
AX_ADD_PLUGINS([wav araw demuxdump demuxsub adpcm a52sys au])
AX_ADD_PLUGINS([access_file access_udp access_http ipv4 access_mms])
AX_ADD_PLUGINS([access_ftp access_directory sap httpd http])

dnl
dnl  Switch to enable a version of VLC where most modules will be builtin
dnl
AC_ARG_ENABLE(mostly-builtin,
[  --enable-mostly-builtin most modules will be built-in (default disabled)])
if test "${enable_mostly_builtin}" = "yes"; then
  AX_ADD_BUILTINS([${PLUGINS}])
  PLUGINS=""
fi

dnl
dnl Some plugins aren't useful on some platforms
dnl
if test "${SYS}" != "mingw32"; then
    AX_ADD_PLUGINS([screensaver])
fi

dnl
dnl  Accelerated modules
dnl
MMX_MODULES="memcpymmx i420_rgb_mmx i422_yuy2_mmx i420_ymga_mmx"
#MMX_MODULES="${MMX_MODULES} idctmmx motionmmx"
MMXEXT_MODULES="memcpymmxext"
#MMXEXT_MODULES="${MMXEXT_MODULES} idctmmxext motionmmxext"
THREEDNOW_MODULES="memcpy3dn"
SSE_MODULES=""
ALTIVEC_MODULES="memcpyaltivec"
#ALTIVEC_MODULES="${ALTIVEC_MODULES} idctaltivec motionaltivec"

if test "${enable_gprof}" != "yes"
then
  MMX_MODULES="${MMX_MODULES} i420_yuy2_mmx"
fi

AC_CACHE_CHECK([if \$CC groks MMX inline assembly],
    [ac_cv_mmx_inline],
    [CFLAGS="${CFLAGS_save}"
     AC_TRY_COMPILE(,[void *p;asm volatile("packuswb %%mm1,%%mm2"::"r"(p));],
                    ac_cv_mmx_inline=yes, ac_cv_mmx_inline=no)])
if test "${ac_cv_mmx_inline}" != "no"; then
  ACCEL_MODULES="${ACCEL_MODULES} ${MMX_MODULES}"
fi

AC_CACHE_CHECK([if \$CC groks MMX EXT inline assembly],
    [ac_cv_mmxext_inline],
    [CFLAGS="${CFLAGS_save}"
     AC_TRY_COMPILE(,[void *p;asm volatile("maskmovq %%mm1,%%mm2"::"r"(p));],
                    ac_cv_mmxext_inline=yes, ac_cv_mmxext_inline=no)])
if test "${ac_cv_mmxext_inline}" != "no"; then
  ACCEL_MODULES="${ACCEL_MODULES} ${MMXEXT_MODULES}"
fi

AC_CACHE_CHECK([if \$CC groks 3D Now! inline assembly],
    [ac_cv_3dnow_inline],
    [CFLAGS="${CFLAGS_save}"
     AC_TRY_COMPILE(,[void *p;asm volatile("pfadd %%mm1,%%mm2"::"r"(p));],
                    ac_cv_3dnow_inline=yes, ac_cv_3dnow_inline=no)])
if test "${ac_cv_3dnow_inline}" != "no"; then
  AC_DEFINE(CAN_COMPILE_3DNOW, 1, Define if \$CC groks 3D Now! inline assembly.)
  ACCEL_MODULES="${ACCEL_MODULES} ${THREEDNOW_MODULES}"
fi

AC_CACHE_CHECK([if \$CC groks SSE inline assembly],
    [ac_cv_sse_inline],
    [CFLAGS="${CFLAGS_save}"
     AC_TRY_COMPILE(,[void *p;asm volatile("xorps %%xmm1,%%xmm2"::"r"(p));],
                    ac_cv_sse_inline=yes, ac_cv_sse_inline=no)])
if test "${ac_cv_sse_inline}" != "no" -a "${SYS}" != "mingw32"; then
  AC_DEFINE(CAN_COMPILE_SSE, 1, Define if \$CC groks SSE inline assembly.)
  ACCEL_MODULES="${ACCEL_MODULES} ${SSE_MODULES}"
fi

if test "${SYS}" != "mingw32"; then
AC_CACHE_CHECK([if \$CC groks AltiVec inline assembly],
    [ac_cv_altivec_inline],
    [CFLAGS="${CFLAGS_save}"
     AC_TRY_COMPILE(,[asm volatile("vperm 0,1,2,3");],
         ac_cv_altivec_inline=yes,
         [CFLAGS="${CFLAGS_save} -Wa,-m7400"
          AC_TRY_COMPILE(,[asm volatile("vperm 0,1,2,3");],
            [ac_cv_altivec_inline="-Wa,-m7400"],
            ac_cv_altivec_inline=no)
         ])])
if test "${ac_cv_altivec_inline}" != "no"; then
  AC_DEFINE(CAN_COMPILE_ALTIVEC, 1, Define if \$CC groks AltiVec inline assembly.)
  if test "${ac_cv_altivec_inline}" != "yes"; then
    AX_ADD_CFLAGS([idctaltivec],[${ac_cv_altivec_inline}])
    AX_ADD_CFLAGS([motionaltivec],[${ac_cv_altivec_inline}])
    AX_ADD_CFLAGS([memcpyaltivec],[${ac_cv_altivec_inline}])
    AX_ADD_CFLAGS([vlc],[${ac_cv_altivec_inline}])
  fi
  ACCEL_MODULES="${ACCEL_MODULES} ${ALTIVEC_MODULES}"
fi

AC_CACHE_CHECK([if \$CC groks AltiVec C extensions],
    [ac_cv_c_altivec],
    [CFLAGS="${CFLAGS_save} -faltivec"
     # Darwin test
     AC_TRY_COMPILE(,[vec_mtvscr((vector unsigned int)(0));],
        ac_cv_c_altivec=-faltivec, [
        # Linux/PPC test
        CFLAGS="${CFLAGS_save} ${CFLAGS_idctaltivec} -fvec"
        AC_TRY_COMPILE(,[vec_mtvscr((vector unsigned int)(0));],
            [ac_cv_c_altivec="-fvec"], ac_cv_c_altivec=no)
        ])
     CFLAGS="${CFLAGS_save}"])
if test "${ac_cv_c_altivec}" != "no"; then
  AC_DEFINE(CAN_COMPILE_C_ALTIVEC, 1, Define if your compiler groks C AltiVec extensions.)
  AX_ADD_CFLAGS([vlc idctaltivec motionaltivec memcpyaltivec],[${ac_cv_c_altivec}])
  ACCEL_MODULES="${ACCEL_MODULES} ${ALTIVEC_MODULES}"
fi

AC_CACHE_CHECK([if linker needs -framework vecLib],
    [ac_cv_ld_altivec],
    [LDFLAGS="${LDFLAGS_vlc} -framework vecLib"
     AC_TRY_LINK([],,ac_cv_ld_altivec=yes,ac_cv_ld_altivec=no)
     LDFLAGS="${LDFLAGS_save}"
    ])
if test "${ac_cv_ld_altivec}" != "no"; then
  AX_ADD_LDFLAGS([vlc idctaltivec motionaltivec memcpyaltivec],[-framework vecLib])
fi
fi # end "${SYS}" != "mingw32"

AC_ARG_WITH(,[])
AC_ARG_WITH(,[Optimization options:])

dnl
dnl  Special arch tuning
dnl
AC_ARG_WITH(tuning,
[  --with-tuning=ARCH      enable special tuning for an architecture
                          (default i686 on IA-32 and 750 on PPC)])
if test -n "${with_tuning}"; then
    if test "${target_cpu}" = "powerpc"; then
        CFLAGS_TUNING="-mtune=${with_tuning}"
    else
        CFLAGS_TUNING="-mcpu=${with_tuning}"
    fi
else
    if test "${target_cpu}" = "i686" -o "${target_cpu}" = "i586" -o "${target_cpu}" = "i486" -o "${target_cpu}" = "i386"; then CFLAGS_TUNING="-mcpu=pentiumpro"
    else
        if test "${target_cpu}" = "powerpc"; then CFLAGS_TUNING="-mtune=750"; fi
    fi
fi

dnl
dnl  x86 accelerations
dnl
if test "${target_cpu}" = "i686" -o "${target_cpu}" = "i586" -o "${target_cpu}" = "x86" -o "${target_cpu}" = "i386"
then
    ARCH="${ARCH} mmx"
    AX_ADD_BUILTINS([${ACCEL_MODULES}])
fi

dnl
dnl  Enable/disable optimizations
dnl
AC_ARG_ENABLE(optimizations,
[  --disable-optimizations disable compiler optimizations (default enabled)])
test "${enable_optimizations}" != "no" && enable_optimizations="yes"

dnl
dnl  AltiVec acceleration
dnl
AC_ARG_ENABLE(altivec,
[  --disable-altivec       disable AltiVec optimizations (default enabled on PPC)],
[ if test "${enable_altivec}" = "yes"; then ARCH="${ARCH} altivec";
    AX_ADD_BUILTINS([${ACCEL_MODULES}]) fi ],
[ if test "${target_cpu}" = "powerpc"; then ARCH="${ARCH} altivec";
    AX_ADD_BUILTINS([${ACCEL_MODULES}]) fi ])

dnl
dnl  Debugging mode
dnl
AC_ARG_ENABLE(debug,
[  --enable-debug          debug mode (default disabled)])
test "${enable_debug}" != "yes" && enable_debug="no"

dnl
dnl  Enable release-specific flags
dnl
AC_ARG_ENABLE(release,
[  --enable-release        activate extra optimizations (default disabled)])
test "${enable_release}" != "yes" && enable_release="no"

dnl
dnl Stream output
dnl
AC_ARG_ENABLE(sout,
  [  --enable-sout           Stream output modules (default enabled)])
if test "${enable_sout}" != "no"
then
  AX_ADD_PLUGINS([access_output_dummy access_output_udp access_output_file access_output_http])
  AX_ADD_PLUGINS([mux_ts mux_ps mux_avi mux_dummy])
  AX_ADD_PLUGINS([packetizer_mpegaudio packetizer_mpegvideo packetizer_a52])
  AX_ADD_PLUGINS([packetizer_mpeg4video packetizer_mpeg4audio])
  AX_ADD_PLUGINS([packetizer_copy])

  AX_ADD_PLUGINS([stream_out_dummy stream_out_standard stream_out_es])
  AX_ADD_PLUGINS([stream_out_duplicate stream_out_display])

  dnl Ogg and vorbis are handled in their respective section
fi


dnl
dnl  Input plugins
dnl

AC_ARG_WITH(,[Input plugins:])

dnl
dnl  DVD module: optionally check for installed libdvdcss
dnl
AC_ARG_ENABLE(dvd,
[  --enable-dvd            DVD input module (default enabled)])
if test "${enable_dvd}" != "no"
then
  AC_ARG_WITH(dvdcss,
  [    --with-dvdcss=PATH    libdvdcss headers and libraries])
  AC_ARG_WITH(dvdcss-tree,
  [    --with-dvdcss-tree=PATH libdvdcss tree for static linking])
  case "${with_dvdcss}" in
  ""|yes)
    if test -z "${with_dvdcss_tree}"
    then
      AC_CHECK_HEADERS(dvdcss/dvdcss.h,
        [ AX_ADD_PLUGINS([dvd])
          AX_ADD_LDFLAGS([dvd dvdcss],[-ldvdcss])],
        [ AC_MSG_WARN([libdvdcss is no longer provided with vlc; please get libdvdcss from http://www.videolan.org/libdvdcss/ and build it. Then either use --with-dvdcss=<path/where/libdvdcss/was/installed> for dynamic linking (recommended under Unix) or --with-dvdcss-tree=<path/where/libdvdcss/was/built> for static linking (recommended under BeOS, Windows, MacOS X). Alternatively you can use --disable-dvd to disable the DVD plugin.])
          AC_MSG_ERROR([cannot find libdvdcss headers]) ])
    else
      AC_MSG_CHECKING(for libdvdcss.a in ${with_dvdcss_tree})
      real_dvdcss_tree="`cd ${with_dvdcss_tree} 2>/dev/null && pwd`"
      if test -z "${real_dvdcss_tree}"
      then
        dnl  The given directory can't be found
        AC_MSG_RESULT(no)
        AC_MSG_ERROR([cannot cd to ${with_dvdcss_tree}])
      fi
      if test -f "${real_dvdcss_tree}/src/.libs/libdvdcss.a"
      then
        dnl  Use a custom libdvdcss
        AC_MSG_RESULT(${real_dvdcss_tree}/src/.libs/libdvdcss.a)
        AX_ADD_BUILTINS([dvd])
        AX_ADD_LDFLAGS([dvd dvdcss],[-L${real_dvdcss_tree}/src/.libs -ldvdcss])
        AX_ADD_CPPFLAGS([dvd],[-I${real