configure.in

dnl Autoconf settings for vlc
AC_INIT(include/main.h)
AC_CONFIG_HEADER(include/defs.h)
AC_CANONICAL_SYSTEM

PACKAGE="vlc"
VERSION="0.3.1"
CODENAME=Ourumov

dnl Save CFLAGS and LDFLAGS
save_CFLAGS="${CFLAGS}"
save_CPPFLAGS="${CPPFLAGS}"
save_LDFLAGS="${LDFLAGS}"

dnl Check for tools
AC_PROG_MAKE_SET
AC_PROG_CC
AC_PROG_CPP

dnl Find the right ranlib, even when cross-compiling
AC_CHECK_TOOL(RANLIB, ranlib, :)
AC_CHECK_TOOL(STRIP, strip, :)

dnl Check for GNU make
AC_PATH_PROG(GMAKE, gmake, no)
if test "x$GMAKE" = "xno"; then
  AC_CACHE_CHECK([whether GNU make is installed],
      [ac_cv_gmake],
      [if make --version | grep -q -i gnu; then
         ac_cv_gmake="yes"
       else
         echo "This software needs you to install GNU make to compile properly."
         echo "You can get it from http://www.gnu.org/."
         exit
       fi])
  VLC_MAKE="make"
else
  VLC_MAKE="gmake"
fi

dnl Gettext stuff
ALL_LINGUAS="de en_GB fr ja no ru nl"

AC_DEFINE_UNQUOTED(VLC_PACKAGE, "$PACKAGE", [Package name])
AC_DEFINE_UNQUOTED(VLC_VERSION, "$VERSION", [Package version])
AM_GNU_GETTEXT

dnl AM_PROG_LIBTOOL
AC_PROG_INSTALL

dnl
dnl  Check the operating system
dnl
case x"${target_os}" in
  x)
    SYS=unknown
    ;;
  xlinux*)
    SYS=linux
    ;;
  xbsdi*)
    SYS=bsdi
    save_CFLAGS="${save_CFLAGS} -pthread"
    dvd_LDFLAGS="${dvd_LDFLAGS} -ldvd"
    vcd_LDFLAGS="${vcd_LDFLAGS} -ldvd"
    ;;
  x*bsd*)
    SYS="${target_os}"
    save_CFLAGS="${save_CFLAGS} -pthread"
    ;;
  xdarwin*)
    SYS=darwin
    save_CFLAGS="${save_CFLAGS} -no-cpp-precomp"
    ;;
  x*mingw32*)
    SYS=mingw32
    AC_CHECK_TOOL(WINDRES, windres, :)
    save_CFLAGS="${save_CFLAGS} -fnative-struct -D_OFF_T_ -D_off_t=long"
    vlc_LDFLAGS="${vlc_LDFLAGS} -mwindows -Xlinker --force-exe-suffix"
    vlc_LDFLAGS="${vlc_LDFLAGS} -lws2_32 -lnetapi32"
    ipv4_LDFLAGS="${ipv4_LDFLAGS} -lws2_32"
    rc_LDFLAGS="${rc_LDFLAGS} -lws2_32"
    ;;
  x*nto*)
    SYS=nto
    x11_LDFLAGS="${x11_LDFLAGS} -lsocket"
    xvideo_LDFLAGS="${xvideo_LDFLAGS} -lsocket"
    ;;
  xbeos)
    SYS=beos
    save_CFLAGS="${save_CFLAGS} -Wno-multichar -Wno-ctor-dtor-privacy -Woverloaded-virtual"
    vlc_LDFLAGS="${vlc_LDFLAGS} -lbe"
    plugins_LDFLAGS="${plugins_LDFLAGS} -nostart"
    beos_LDFLAGS="${beos_LDFLAGS} -lbe -lgame -lroot -ltracker"
    ipv4_LDFLAGS="${ipv4_LDFLAGS} -lbind"
    ;;
  x*)
    SYS="${target_os}"
    ;;
esac

dnl Flags for plugin compilation
if test x"${SYS}" = xmingw32
then
  plugins_CFLAGS="${plugins_CFLAGS} -fnative-struct"
else
  plugins_CFLAGS="${plugins_CFLAGS} -fPIC"
fi

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

dnl Check for system libs needed
AC_CHECK_FUNCS(gettimeofday select strerror strtod strtol isatty usleep vasprintf swab sigrelse getpwuid memalign posix_memalign gethostbyname2)

AC_CHECK_FUNC(connect,,[
  AC_CHECK_LIB(socket,connect,
    ipv4_LDFLAGS="${ipv4_LDFLAGS} -lsocket"
    vlc_LDFLAGS="${vlc_LDFLAGS} -lsocket"
)])
AC_CHECK_FUNC(gethostbyname,,[
  AC_CHECK_LIB(nsl,gethostbyname,ipv4_LDFLAGS="${ipv4_LDFLAGS} -lnsl")
])
AC_CHECK_FUNC(gethostbyname,,[
  AC_CHECK_LIB(bind,gethostbyname,ipv4_LDFLAGS="${ipv4_LDFLAGS} -lbind")
])
AC_CHECK_FUNC(nanosleep,,[
  AC_CHECK_LIB(rt,nanosleep,vlc_LDFLAGS="${vlc_LDFLAGS} -lrt",[
    AC_CHECK_LIB(posix4,nanosleep,vlc_LDFLAGS="${vlc_LDFLAGS} -lposix4")
  ])
])
AC_CHECK_FUNC(inet_aton,,[
  AC_CHECK_LIB(resolv,inet_aton,ipv4_LDFLAGS="${ipv4_LDFLAGS} -lresolv")
])
AC_CHECK_FUNC(textdomain,,[
  AC_CHECK_LIB(intl,textdomain,save_LDFLAGS="${save_LDFLAGS} -lintl")
])

dnl Check for getopt
NEED_GETOPT=0
AC_CHECK_FUNC(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_LDFLAGS="${vlc_LDFLAGS} -lgnugetopt"],
    [NEED_GETOPT=1])])

AC_TYPE_SIGNAL
AC_CHECK_LIB(dl,dlopen,vlc_LDFLAGS="${vlc_LDFLAGS} -ldl")
AC_CHECK_LIB(m,cos,
  imdct_LDFLAGS="${imdct_LDFLAGS} -lm"
  filter_distort_LDFLAGS="${filter_distort_LDFLAGS} -lm")
AC_CHECK_LIB(m,pow,
  imdct_LDFLAGS="${imdct_LDFLAGS} -lm"
  imdct3dn_LDFLAGS="${imdct3dn_LDFLAGS} -lm"
  imdctsse_LDFLAGS="${imdctsse_LDFLAGS} -lm"
  chroma_i420_rgb_LDFLAGS="${chroma_i420_rgb_LDFLAGS} -lm"
)

dnl Check for pthreads - borrowed from XMMS
THREAD_LIB=error
if test "x${THREAD_LIB}" = xerror; then
  AC_CHECK_LIB(pthread,pthread_attr_init,THREAD_LIB="-lpthread")
fi
if test "x${THREAD_LIB}" = xerror; then
  AC_CHECK_LIB(pthreads,pthread_attr_init,THREAD_LIB="-lpthreads")
fi
if test "x${THREAD_LIB}" = xerror; then
  AC_CHECK_LIB(c_r,pthread_attr_init,THREAD_LIB="-lc_r")
fi
if test "x${THREAD_LIB}" = xerror; then
  AC_CHECK_FUNC(pthread_attr_init)
  THREAD_LIB=""
fi

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

dnl Check for misc headers
AC_EGREP_HEADER(pthread_cond_t,pthread.h,[
  AC_DEFINE(PTHREAD_COND_T_IN_PTHREAD_H, 1,
            Define if <pthread.h> defines pthread_cond_t.)])
AC_EGREP_HEADER(strncasecmp,strings.h,[
  AC_DEFINE(STRNCASECMP_IN_STRINGS_H, 1,
            Define if <strings.h> defines strncasecmp.)])

dnl Check for headers
AC_CHECK_HEADERS(getopt.h strings.h)
AC_CHECK_HEADERS(sys/sockio.h fcntl.h sys/types.h sys/time.h sys/times.h)
AC_CHECK_HEADERS(dlfcn.h image.h)
AC_CHECK_HEADERS(arpa/inet.h net/if.h netinet/in.h sys/socket.h)
AC_CHECK_HEADERS(machine/param.h sys/shm.h)
AC_CHECK_HEADERS(linux/version.h)

AC_HEADER_TIME

dnl Check for threads library
AC_CHECK_HEADERS(cthreads.h pthread.h kernel/scheduler.h kernel/OS.h)

dnl Check for DPMS
if test x$SYS != xmingw32
then
  if test x$x_includes = xNONE; then
    x_includes=/usr/X11R6/include
  fi
  if test x$x_libraries = xNONE; then
    x_libraries=/usr/X11R6/lib
  fi
  CPPFLAGS="$save_CPPFLAGS -I$x_includes"
  AC_CHECK_HEADERS(X11/extensions/dpms.h, [
    AC_EGREP_HEADER(DPMSInfo,X11/extensions/dpms.h,[
      AC_DEFINE(DPMSINFO_IN_DPMS_H, 1,
                Define if <X11/extensions/dpms.h> defines DPMSInfo.)
    ])
  ])
  CPPFLAGS="$save_CPPFLAGS"
fi

dnl Check for ntohl, etc.
AC_CACHE_CHECK([for ntohl in sys/param.h],
    [ac_cv_c_ntohl_sys_param_h],
    [CFLAGS="${save_CFLAGS} -Wall -Werror"
     AC_TRY_COMPILE([#include <sys/param.h>],
        [void foo() { int meuh; ntohl(meuh); }],
        ac_cv_c_ntohl_sys_param_h=yes, ac_cv_c_ntohl_sys_param_h=no)])
if test x"$ac_cv_c_ntohl_sys_param_h" != x"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="${save_CFLAGS} -finline-limit-30000"
     AC_TRY_COMPILE([],,ac_cv_c_inline_limit=yes, ac_cv_c_inline_limit=no)])
if test x"$ac_cv_c_inline_limit" != x"no"; then
    save_CFLAGS="${save_CFLAGS} -finline-limit-30000"
fi

dnl Check for -W or -w flags
AC_CACHE_CHECK([if \$CC accepts -Wall -Winline],
    [ac_cv_c_Wall_Winline],
    [CFLAGS="${save_CFLAGS} -Wall -Winline"
     AC_TRY_COMPILE([],,ac_cv_c_Wall_Winline=yes, ac_cv_c_Wall_Winline=no)])
if test x"$ac_cv_c_Wall_Winline" != x"no"; then
    save_CFLAGS="${save_CFLAGS} -Wall -Winline"
else
    AC_CACHE_CHECK([if \$CC accepts -wall -winline],
        [ac_cv_c_wall_winline],
        [CFLAGS="${save_CFLAGS} -wall -winline"
         AC_TRY_COMPILE([],,ac_cv_c_wall_winline=yes, ac_cv_c_wall_winline=no)])
    if test x"$ac_cv_c_wall_winline" != x"no"; then
        save_CFLAGS="${save_CFLAGS} -wall -winline"
    fi
fi

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

dnl Check for various optimization flags
AC_CACHE_CHECK([if \$CC accepts -O3],
    [ac_cv_c_o3],
    [CFLAGS="${save_CFLAGS} -O3"
     AC_TRY_COMPILE([],,ac_cv_c_o3=yes, ac_cv_c_o3=no)])
if test x"$ac_cv_c_o3" != x"no"; then
    CFLAGS_OPTIM="${CFLAGS_OPTIM} -O3"
else
    AC_CACHE_CHECK([if \$CC accepts -O2],
        [ac_cv_c_o2],
        [CFLAGS="${save_CFLAGS} -O2"
         AC_TRY_COMPILE([],,ac_cv_c_o2=yes, ac_cv_c_o2=no)])
    if test x"$ac_cv_c_o2" != x"no"; then
        CFLAGS_OPTIM="${CFLAGS_OPTIM} -O2"
    else
        AC_CACHE_CHECK([if \$CC accepts -O],
            [ac_cv_c_o],
            [CFLAGS="${save_CFLAGS} -O"
             AC_TRY_COMPILE([],,ac_cv_c_o=yes, ac_cv_c_o=no)])
        if test x"$ac_cv_c_o" != x"no"; then
            CFLAGS_OPTIM="${CFLAGS_OPTIM} -O"
        fi
    fi
fi

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

dnl Check for -funroll-loops
AC_CACHE_CHECK([if \$CC accepts -funroll-loops],
    [ac_cv_c_unroll_loops],
    [CFLAGS="${save_CFLAGS} -funroll-loops"
     AC_TRY_COMPILE([],,ac_cv_c_unroll_loops=yes, ac_cv_c_unroll_loops=no)])
if test x"$ac_cv_c_unroll_loops" != x"no"; then
    CFLAGS_OPTIM="${CFLAGS_OPTIM} -funroll-loops"
fi

dnl Check for -fomit-frame-pointer
AC_CACHE_CHECK([if \$CC accepts -fomit-frame-pointer],
    [ac_cv_c_omit_frame_pointer],
    [CFLAGS="${save_CFLAGS} -fomit-frame-pointer"
     AC_TRY_COMPILE([],,ac_cv_c_omit_frame_pointer=yes, ac_cv_c_omit_frame_pointer=no)])
if test x"$ac_cv_c_omit_frame_pointer" != x"no"; then
    CFLAGS_OPTIM_NODEBUG="${CFLAGS_OPTIM_NODEBUG} -fomit-frame-pointer"
fi

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

dnl Check for standard plugin linking flags
AC_CACHE_CHECK([if \$CC accepts -shared],
    [ac_cv_ld_plugins],
    [CFLAGS="${save_CFLAGS} -shared"
     AC_TRY_COMPILE([],, ac_cv_ld_plugins=yes, ac_cv_ld_plugins=no)])
if test x"$ac_cv_ld_plugins" != x"no"; then
    plugins_LDFLAGS="${plugins_LDFLAGS} -shared"
fi
        
dnl Check for variadic macros
AC_CACHE_CHECK([for variadic cpp macros],
    [ac_cv_cpp_variadic_macros],
    [CFLAGS="${save_CFLAGS}"
     AC_TRY_COMPILE(
         [#include <stdio.h>
          #define a(b,c...) printf(b,##c)],
         [a("foo");a("%s","bar");a("%s%s","baz","quux");],
         ac_cv_cpp_variadic_macros=yes,
         ac_cv_cpp_variadic_macros=no)])
if test x"$ac_cv_cpp_variadic_macros" != x"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="${save_CFLAGS} -Werror"
    for ac_cv_c_attr_align_try in 2 4 8 16 32 64; do
        AC_TRY_COMPILE([],
        [static char c __attribute__ ((aligned($ac_cv_c_attr_align_try))) = 0; return c;],
        [ac_cv_c_attribute_aligned=$ac_cv_c_attr_align_try])
    done])
if test x"$ac_cv_c_attribute_aligned" != x"0"; then
    AC_DEFINE_UNQUOTED([ATTRIBUTE_ALIGNED_MAX],
        [$ac_cv_c_attribute_aligned],[Maximum supported data alignment])
fi

dnl End of the bizarre compilation tests
CFLAGS="${save_CFLAGS}"
CPPFLAGS="${save_CPPFLAGS}"
LDFLAGS="${save_LDFLAGS}"

dnl Check for boolean_t
AC_CACHE_CHECK([for boolean_t in sys/types.h],
    [ac_cv_c_boolean_t_sys_types_h],
    [AC_TRY_COMPILE([#include <sys/types.h>], [boolean_t foo;],
     ac_cv_c_boolean_t_sys_types_h=yes, ac_cv_c_boolean_t_sys_types_h=no)])
if test x"$ac_cv_c_boolean_t_sys_types_h" != x"no"; then
    AC_DEFINE(BOOLEAN_T_IN_SYS_TYPES_H, 1, Define if <sys/types.h> defines boolean_t.)
fi

AC_CACHE_CHECK([for boolean_t in pthread.h],
    [ac_cv_c_boolean_t_pthread_h],
    [AC_TRY_COMPILE([#include <pthread.h>], [boolean_t foo;],
     ac_cv_c_boolean_t_pthread_h=yes, ac_cv_c_boolean_t_pthread_h=no)])
if test x"$ac_cv_c_boolean_t_pthread_h" != x"no"; then
    AC_DEFINE(BOOLEAN_T_IN_PTHREAD_H, 1, Define if <pthread.h> defines boolean_t.)
fi

AC_CACHE_CHECK([for boolean_t in cthreads.h],
    [ac_cv_c_boolean_t_cthreads_h],
    [AC_TRY_COMPILE([#include <cthreads.h>], [boolean_t foo;],
     ac_cv_c_boolean_t_cthreads_h=yes, ac_cv_c_boolean_t_cthreads_h=no)])
if test x"$ac_cv_c_boolean_t_cthreads_h" != x"no"; then
    AC_DEFINE(BOOLEAN_T_IN_CTHREADS_H, 1, Define if <cthreads.h> defines boolean_t.)
fi

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

dnl
dnl  default modules
dnl
BUILTINS="${BUILTINS} idct idctclassic motion imdct downmix chroma_i420_rgb chroma_i420_yuy2 chroma_i422_yuy2 chroma_i420_ymga mpeg_adec ac3_adec mpeg_vdec"
PLUGINS="${PLUGINS} dummy null rc logger mpeg_es mpeg_ps mpeg_ts mpeg_audio file udp http ipv4 memcpy lpcm_adec ac3_spdif spudec filter_deinterlace filter_invert filter_wall filter_transform filter_distort filter_clone fx_scope"

dnl
dnl  Accelerated modules
dnl
MMX_MODULES="memcpymmx idctmmx motionmmx chroma_i420_rgb_mmx chroma_i420_yuy2_mmx chroma_i422_yuy2_mmx chroma_i420_ymga_mmx"
MMXEXT_MODULES="memcpymmxext idctmmxext motionmmxext"
THREEDNOW_MODULES="memcpy3dn imdct3dn downmix3dn"
SSE_MODULES="imdctsse downmixsse"
ALTIVEC_MODULES="idctaltivec motionaltivec memcpyaltivec"

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

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

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

AC_CACHE_CHECK([if \$CC groks SSE inline assembly],
    [ac_cv_sse_inline],
    [AC_TRY_COMPILE(,[void *p;asm volatile("xorps %%xmm1,%%xmm2"::"r"(p));],
                    ac_cv_sse_inline=yes, ac_cv_sse_inline=no)])
if test x"$ac_cv_sse_inline" != x"no" -a x$SYS != xmingw32; then
  AC_DEFINE(CAN_COMPILE_SSE, 1, Define if \$CC groks SSE inline assembly.)
  ACCEL_MODULES="${ACCEL_MODULES} ${SSE_MODULES}"
fi

# don't try to grok altivec with native mingw32 it doesn't work right now
# we should be able to remove this test with future versions of mingw32
if test x$SYS != xmingw32; then
AC_CACHE_CHECK([if \$CC groks Altivec inline assembly],
    [ac_cv_altivec_inline],
    [AC_TRY_COMPILE(,[asm volatile("vperm 0,1,2,3");],
         ac_cv_altivec_inline=yes,
         [save_CFLAGS=$CFLAGS
          CFLAGS="$CFLAGS -Wa,-m7400"
          AC_TRY_COMPILE(,[asm volatile("vperm 0,1,2,3");],
            [ac_cv_altivec_inline="-Wa,-m7400"],
            ac_cv_altivec_inline=no)
          CFLAGS=$save_CFLAGS
         ])])
if test x"$ac_cv_altivec_inline" != x"no"; then
  AC_DEFINE(CAN_COMPILE_ALTIVEC, 1, Define if \$CC groks ALTIVEC inline assembly.)
  if test x"$ac_cv_altivec_inline" != x"yes"; then
    idctaltivec_CFLAGS="$idctaltivec_CFLAGS $ac_cv_altivec_inline"
    motionaltivec_CFLAGS="$motionaltivec_CFLAGS $ac_cv_altivec_inline"
    memcpyaltivec_CFLAGS="$memcpyaltivec_CFLAGS $ac_cv_altivec_inline"
    vlc_CFLAGS="$vlc_CFLAGS $ac_cv_altivec_inline"
  fi
  ACCEL_MODULES="${ACCEL_MODULES} ${ALTIVEC_MODULES}"
fi

AC_CACHE_CHECK([if \$CC groks Altivec C extensions],
    [ac_cv_c_altivec],
    [save_CFLAGS=$CFLAGS
     CFLAGS="$CFLAGS -faltivec"
     # Darwin test
     AC_TRY_COMPILE(,[vec_mtvscr((vector unsigned int)(0));],
        ac_cv_c_altivec=-faltivec, [
        # Linux/PPC test
        CFLAGS="$save_CFLAGS $idctaltivec_CFLAGS -fvec"
        AC_TRY_COMPILE(,[vec_mtvscr((vector unsigned int)(0));],
            [ac_cv_c_altivec="-fvec"], ac_cv_c_altivec=no)
        ])
     CFLAGS=$save_CFLAGS
    ])
if test x"$ac_cv_c_altivec" != x"no"; then
  AC_DEFINE(CAN_COMPILE_C_ALTIVEC, 1, Define if your compiler groks C altivec extensions.)
  idctaltivec_CFLAGS="$idctaltivec_CFLAGS $ac_cv_c_altivec"
  motionaltivec_CFLAGS="$motionaltivec_CFLAGS $ac_cv_c_altivec"
  memcpyaltivec_CFLAGS="$memcpyaltivec_CFLAGS $ac_cv_c_altivec"
  vlc_CFLAGS="$vlc_CFLAGS $ac_cv_c_altivec"
  ACCEL_MODULES="${ACCEL_MODULES} ${ALTIVEC_MODULES}"
fi

AC_CACHE_CHECK([if linker needs -framework vecLib],
    [ac_cv_ld_altivec],
    [save_LDFLAGS=$LDFLAGS
     LDFLAGS="$LDFLAGS -framework vecLib"
     AC_TRY_LINK([],,ac_cv_ld_altivec=yes,ac_cv_ld_altivec=no)
     LDFLAGS=$save_LDFLAGS
    ])
if test x"$ac_cv_ld_altivec" != x"no"; then
  idctaltivec_LDFLAGS="${idctaltivec_LDFLAGS} -framework vecLib"
  motionaltivec_LDFLAGS="${motionaltivec_LDFLAGS} -framework vecLib"
  memcpyaltivec_LDFLAGS="${memcpyaltivec_LDFLAGS} -framework vecLib"
  vlc_LDFLAGS="${vlc_LDFLAGS} -framework vecLib"
fi
fi # end if 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 "x$with_tuning" != "x"; then
    TUNING="$with_tuning"
else
    if test x${target_cpu} = xi686 -o x${target_cpu} = xi586 -o x${target_cpu} = xi486 -o x${target_cpu} = xi386; then TUNING="pentiumpro"
    else
        if test x${target_cpu} = xpowerpc; then TUNING="750"; fi
    fi
fi

dnl
dnl  x86 accelerations
dnl
if test x${target_cpu} = xi686 -o x${target_cpu} = xi586 -o x${target_cpu} = xx86 -o x${target_cpu} = xi386
then
    ARCH="${ARCH} mmx"
    BUILTINS="${BUILTINS} ${ACCEL_MODULES}"
fi

dnl
dnl  Enable/disable optimizations
dnl
AC_ARG_ENABLE(optimizations,
[  --disable-optimizations disable compiler optimizations (default enabled)],
[ if test x$enable_optimizations = xno; then OPTIMS=0; fi ],
[ OPTIMS=1 ])

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

dnl
dnl  Debugging mode
dnl
DEBUG=0
AC_ARG_ENABLE(debug,
[  --enable-debug          debug mode (default disabled)],
[ if test x$enable_debug = xyes; then DEBUG=1; fi ])

dnl
dnl  Enable release-specific flags
dnl
RELEASE=0
AC_ARG_ENABLE(release,
[  --enable-release        activate extra optimizations (default disabled)],
[ if test x$enable_release = xyes; then RELEASE=1; fi ],
[ VERSION="${VERSION}_`date +%Y-%m-%d`" ])

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 "x$enable_dvd" != "xno"
then
  AC_ARG_WITH(dvdcss, 
  [    --with-dvdcss=PATH    libdvdcss headers and libraries])
  AC_ARG_WITH(dvdcss-tree, 
  [    --with-dvdcss-tree=PATH libdvdcss tree for static linking])
  case "x$with_dvdcss" in
  x|xyes)
    if test "x$with_dvdcss_tree" = x
    then
      AC_CHECK_HEADERS(dvdcss/dvdcss.h,
        [ PLUGINS="${PLUGINS} dvd"
          dvd_LDFLAGS="${dvd_LDFLAGS} -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 ${with_dvdcss_tree} 2>/dev/null && pwd`"
      if test "x$real_dvdcss_tree" = x
      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(${real_dvdcss_tree}/src/.libs/libdvdcss.a)
        BUILTINS="${BUILTINS} dvd"
        dvd_LDFLAGS="${dvd_LDFLAGS} ${real_dvdcss_tree}/src/.libs/libdvdcss.a"
        dvd_CFLAGS="${dvd_CFLAGS} -I${real_dvdcss_tree}/src"
      else
        dnl  The given libdvdcss wasn't built
        AC_MSG_RESULT(no)
        AC_MSG_ERROR([cannot find ${real_dvdcss_tree}/src/.libs/libdvdcss.a, make sure you compiled libdvdcss in ${with_dvdcss_tree}])
      fi
    fi
  ;;
  xno)
    dnl  Compile without dvdcss (dlopen version, works only under Linux)
    PLUGINS="${PLUGINS} dvd"
    dvd_CFLAGS="${dvd_CFLAGS} -DGOD_DAMN_DMCA"
    dvd_LDFLAGS="${dvd_LDFLAGS} -ldl"
  ;;
  *)
    AC_MSG_CHECKING(for dvdcss headers in ${with_dvdcss})
    if test -f ${with_dvdcss}/include/dvdcss/dvdcss.h
    then
      dnl  Use ${with_dvdcss}/include/dvdcss/dvdcss.h
      AC_MSG_RESULT(yes)
      PLUGINS="${PLUGINS} dvd"
      dvd_LDFLAGS="${dvd_LDFLAGS} -L${with_dvdcss}/lib -ldvdcss"
      dvd_CFLAGS="${dvd_CFLAGS} -I${with_dvdcss}/include"
    else
      dnl  No libdvdcss could be found, sorry
      AC_MSG_RESULT(no)
      AC_MSG_ERROR([cannot find ${with_dvdcss}/include/dvdcss/dvdcss.h])
    fi
  ;;
  esac
fi

dnl
dnl dvdread module: check for libdvdread plugin
dnl
AC_ARG_ENABLE(dvdread,
[  --enable-dvdread        dvdread input module (default disabled)])
if test "x$enable_dvdread" != "xno"
then
  AC_ARG_WITH(dvdread, 
  [    --with-dvdread=PATH   libdvdread headers and libraries])
  if test "x$with_dvdread" = x
  then
    test_LDFLAGS=""
    test_CFLAGS=""
  else
    test_LDFLAGS="-L${with_dvdread}/lib"
    test_CFLAGS="-I${with_dvdread}/include"
  fi
  CPPFLAGS="$save_CPPFLAGS $test_CFLAGS"
  AC_CHECK_HEADERS(dvdread/dvd_reader.h, [
     AC_TRY_COMPILE([#include <dvdread/dvd_reader.h>],
        [void foo() { int i=DVD_VIDEO_LB_LEN; }],[
          PLUGINS="${PLUGINS} dvdread"
          dvdread_LDFLAGS="${dvdread_LDFLAGS} ${test_LDFLAGS} -ldvdread"
          dvdread_CFLAGS="${dvdread_CFLAGS} ${test_CFLAGS}"
        ],[
          if test "x$enable_dvdread" != x
          then
            AC_MSG_ERROR([Cannot find DVD_VIDEO_LB_LEN in dvdread/dvd_reader.h, please install libdvdread version 0.9.2 or later])
          fi
        ])
  ],[
    if test "x$enable_dvdread" != x
    then
      if test "x$with_dvdread" != x
      then
        AC_MSG_ERROR([Cannot find dvdread/dvd_reader.h in ${with_dvdread}/include])
      else
        AC_MSG_ERROR([Cannot find dvdread/dvd_reader.h])
      fi
    fi
  ])
  CPPFLAGS="$save_CPPFLAGS"
fi

dnl
dnl  libdvbpsi ts demux
dnl
AC_ARG_ENABLE(dvbpsi,
[  --enable-dvbpsi        dvbpsi ts demux module (default disabled)])
if test "x$enable_dvbpsi" != "xno"
then
  AC_ARG_WITH(dvbpsi, 
  [    --with-dvbpsi=PATH    libdvbpsi headers and libraries])
  if test "x$with_dvbpsi" = x
  then
    test_LDFLAGS=""
    test_CFLAGS=""
  else
    test_LDFLAGS="-L${with_dvbpsi}/lib"
    test_CFLAGS="-I${with_dvbpsi}/include"
  fi
  CPPFLAGS="$save_CPPFLAGS $test_CFLAGS"
  AC_CHECK_HEADER([dvbpsi/dr.h],[
    PLUGINS="${PLUGINS} mpeg_ts_dvbpsi"
    mpeg_ts_dvbpsi_LDFLAGS="${mpeg_ts_dvbpsi_LDFLAGS} ${test_LDFLAGS} -ldvbpsi"
    mpeg_ts_dvbpsi_CFLAGS="${mpeg_ts_dvbpsi_CFLAGS} ${test_CFLAGS}"
    ],[
    if test "x$enable_dvbpsi" != x
    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="$save_CPPFLAGS"
fi
 
dnl
dnl  VCD module
dnl
AC_ARG_ENABLE(vcd,
  [  --enable-vcd            VCD support for Linux, FreeBSD and MacOS X (default enabled)])

if test x$enable_vcd != xno
then
  AC_EGREP_HEADER(cdrom_msf0,linux/cdrom.h,[
    PLUGINS="${PLUGINS} vcd"
  ])
  
  AC_EGREP_HEADER(ioc_toc_header ,sys/cdio.h,[
    PLUGINS="${PLUGINS} vcd"
    AC_DEFINE(HAVE_IOC_TOC_HEADER_IN_SYS_CDIO_H, 1, For FreeBSD VCD support)
  ])
  
  if test "x${SYS}" = "xbsdi"
  then
    PLUGINS="${PLUGINS} vcd"
  fi

  if test "x${SYS}" = "xdarwin"
  then
    # No need to add vcd to PLUGINS, Darwin is already based on FreeBSD
    vcd_LDFLAGS="${vcd_LDFLAGS} -framework IOKit -framework CoreFoundation" 
  fi
fi

dnl
dnl  Satellite input module
dnl
AC_ARG_ENABLE(satellite,
  [  --enable-satellite      satellite card support (default disabled)],
  [ if test x$enable_satellite = xyes
    then
      PLUGINS="${PLUGINS} satellite"
    fi])

dnl
dnl  ipv6 plugin - not for QNX yet
dnl
if test x$SYS != xnto
then
  AC_CHECK_FUNC(inet_pton,[PLUGINS="${PLUGINS} ipv6"])
fi

dnl
dnl  AVI demux plugin
dnl
AC_ARG_ENABLE(avi,
  [  --enable-avi            AVI demux module (default enabled)])
if test x$enable_avi != xno
then
  PLUGINS="${PLUGINS} avi"
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 disabled)])
if test x$enable_mad = xyes
then
  AC_ARG_WITH(mad,
    [    --with-mad=PATH       path to libmad],[],[])
  if test "x$with_mad" != "xno" -a "x$with_mad" != "x"
  then
    mad_CFLAGS="${mad_CFLAGS} -I$with_mad/include"
    mad_LDFLAGS="${mad_LDFLAGS} -L$with_mad/lib"
  fi

  AC_ARG_WITH(mad-tree,
    [    --with-mad-tree=PATH  mad tree for static linking],[],[])
  if test "x$with_mad_tree" != "xno" -a "x$with_mad_tree" != "x"
  then
    real_mad_tree="`cd ${with_mad_tree} 2>/dev/null && pwd`"
    if test "x$real_mad_tree" = x
    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}/libmad)
    if test -f ${real_mad_tree}/libmad/mad.h
    then
      AC_MSG_RESULT(yes)
      mad_CFLAGS="${mad_CFLAGS} -I${real_mad_tree}/libmad"
      mad_LDFLAGS="${mad_LDFLAGS} -L${real_mad_tree}/libmad/.libs"
      save_LDFLAGS=$LDFLAGS
      LDFLAGS=$mad_LDFLAGS
      AC_CHECK_LIB(mad, mad_bit_init, [
        BUILTINS="${BUILTINS} mad"
        mad_LDFLAGS="${mad_LDFLAGS} -lmad"
        ],[ AC_MSG_ERROR([the specified tree hasn't been compiled ])
      ],[])
      LDFLAGS=$save_LDFLAGS
    else
      AC_MSG_RESULT(no)
      AC_MSG_ERROR([the specified tree doesn't have mad.h])
    fi
  else
    save_CFLAGS=$CFLAGS
    save_LDFLAGS=$LDFLAGS
    CFLAGS="$CFLAGS $mad_CFLAGS"
    LDFLAGS="$LDFLAGS $mad_LDFLAGS"
    AC_CHECK_HEADERS(mad.h, ,
      [ AC_MSG_ERROR([Cannot find development headers for libmad...]) ])
    AC_CHECK_LIB(mad, mad_bit_init,
      PLUGINS="${PLUGINS} mad"
      mad_LDFLAGS="${mad_LDFLAGS} -lmad",
      [ AC_MSG_ERROR([Cannot find libmad library...]) ])
    CFLAGS=$save_CFLAGS
    LDFLAGS=$save_LDFLAGS
  fi
fi

dnl
dnl  ffmpeg decoder plugin
dnl
AC_ARG_ENABLE(ffmpeg,
[  --enable-ffmpeg         ffmpeg codec (default disabled)])
if test "x$enable_ffmpeg" = "xyes"
then
  AC_ARG_WITH(ffmpeg-tree, 
  [    --with-ffmpeg-tree=PATH ffmpeg tree for static linking])
  if test "x$with_ffmpeg_tree" = x
  then
    AC_MSG_ERROR([cannot find ${real_ffmpeg_tree}/libavcodec/libavcodec.a])
  else
    AC_MSG_CHECKING(for libavcodec.a in ${with_ffmpeg_tree})
    real_ffmpeg_tree="`cd ${with_ffmpeg_tree} 2>/dev/null && pwd`"
    if test "x$real_ffmpeg_tree" = x
    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  Use a custom libffmpeg
      AC_MSG_RESULT(${real_ffmpeg_tree}/libavcodec/libavcodec.a)
      BUILTINS="${BUILTINS} ffmpeg"
      ffmpeg_LDFLAGS="${ffmpeg_LDFLAGS} ${real_ffmpeg_tree}/libavcodec/libavcodec.a"
      ffmpeg_CFLAGS="${ffmpeg_CFLAGS} -I${real_ffmpeg_tree}/libavcodec"
    else
      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
  fi
fi


dnl special case for BeOS
if test x$SYS = xbeos
then
    PLUGINS="${PLUGINS} beos"
fi

dnl
dnl  a52 AC3 decoder plugin
dnl
AC_ARG_ENABLE(a52,
  [  --enable-a52            AC3 support with liba52 (default enabled)])
if test "x$enable_a52" != "xno"
then
  AC_ARG_WITH(a52-tree,
    [    --with-a52-tree=PATH  a52dec tree for static linking ],[],[])
  if test "x$with_a52_tree" != "xno" -a "x$with_a52_tree" != "x"
  then
    real_a52_tree="`cd ${with_a52_tree} 2>/dev/null && pwd`"
    if test "x$real_a52_tree" = x
    then
      dnl  The given directory can't be found
      AC_MSG_RESULT(no)
      AC_MSG_ERROR([${with_a52_tree} directory doesn't exist])
    fi
    dnl  Use a custom a52dec
    AC_MSG_CHECKING(for a52.h in ${real_a52_tree}/include)
    if test -f ${real_a52_tree}/include/a52.h
    then
      AC_MSG_RESULT(yes)
      a52_CFLAGS="${a52_CFLAGS} -I${real_a52_tree}"
      a52_LDFLAGS="${a52_LDFLAGS} -L${real_a52_tree}/liba52/.libs"
      save_LDFLAGS=$LDFLAGS
      LDFLAGS="$a52_LDFLAGS $LDFLAGS"
      AC_CHECK_LIB(a52, a52_free, [
        BUILTINS="${BUILTINS} a52"
        a52_LDFLAGS="${a52_LDFLAGS} -la52 -lm"
        a52_CFLAGS="${a52_CFLAGS} -DUSE_A52DEC_TREE"
        ],[
        if test -f ${real_a52_tree}/liba52/.libs/liba52.a
        then
          AC_MSG_ERROR([make sure you have at least a52dec-0.7.3])
        else
          AC_MSG_ERROR([the specified tree hasn't been compiled])
        fi
      ],[-lm])
      LDFLAGS=$save_LDFLAGS
    else
      AC_MSG_RESULT(no)
      AC_MSG_ERROR([the specified tree doesn't have a52.h])
    fi
  else dnl  no with args
    AC_CHECK_HEADERS(a52dec/a52.h, [
      AC_CHECK_LIB(a52, a52_free, [
        BUILTINS="${BUILTINS} a52"
        a52_LDFLAGS="${a52_LDFLAGS} -la52 -lm"
        a52_CFLAGS="${a52_CFLAGS}"
      ],[],[-lm])
    ])
  fi
fi

dnl
dnl  ogg vorbis plugin
dnl
AC_ARG_ENABLE(vorbis,
  [  --enable-vorbis         Ogg/Vorbis decoder support (default enabled)])
if test "x$enable_vorbis" != "xno"
then
  AC_CHECK_HEADERS(ogg/ogg.h, [
    dnl disabled for the moment
    #PLUGINS="${PLUGINS} vorbis"
    vorbis_LDFLAGS="${vorbis_LDFLAGS} -lvorbis"
   ],[])
fi

dnl
dnl  Video plugins
dnl

AC_ARG_WITH(,[Video plugins:])

dnl
dnl  X11 module
dnl  (enabled by default except on win32)
dnl
AC_ARG_ENABLE(x11,
  [  --enable-x11            X11 support (default enabled)])
if test x$enable_x11 != xno &&
  (test x$SYS != xmingw32 || test x$enable_x11 = xyes); then
  if test x$x_includes = xNONE; then
    x_includes=/usr/X11R6/include
  fi
  if test x$x_libraries = xNONE; then
    x_libraries=/usr/X11R6/lib
  fi
  CPPFLAGS="$save_CPPFLAGS -I$x_includes"
  AC_CHECK_HEADERS(X11/Xlib.h, [
    PLUGINS="${PLUGINS} x11"
    x11_LDFLAGS="${x11_LDFLAGS} -L$x_libraries -lX11 -lXext"
    x11_CFLAGS="${x11_CFLAGS} -I$x_includes"
  ])
  CPPFLAGS="$save_CPPFLAGS"
fi

dnl
dnl  XVideo module
dnl  (enabled by default except on win32)
dnl
AC_ARG_ENABLE(xvideo,
  [  --enable-xvideo         XVideo support (default enabled)])
if test x$enable_xvideo != xno &&
  (test x$SYS != xmingw32 || test x$enable_xvideo = xyes); then
  if test x$x_includes = xNONE; then
    x_includes=/usr/X11R6/include
  fi
  if test x$x_libraries = xNONE; then
    x_libraries=/usr/X11R6/lib
  fi
  save_CPPFLAGS=$CPPFLAGS
  CPPFLAGS="$save_CPPFLAGS -I$x_includes"
  AC_CHECK_HEADERS(X11/extensions/Xv.h, [
    save_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS -L$x_libraries -lX11 -lXext"
    AC_CHECK_LIB(Xv_pic,XvSetPortAttribute,
      # We have Xv_pic, that's good, we can build an xvideo.so plugin !
      PLUGINS="${PLUGINS} xvideo"
      xvideo_LDFLAGS="${xvideo_LDFLAGS} -L$x_libraries -lX11 -lXext -lXv_pic"
      xvideo_CFLAGS="${xvideo_CFLAGS} -I$x_includes",
      # We don't have Xv_pic, let's make xvideo.a as builtin
      BUILTINS="${BUILTINS} xvideo"
      xvideo_LDFLAGS="${xvideo_LDFLAGS} -L$x_libraries -lX11 -lXext -lXv"
      xvideo_CFLAGS="${xvideo_CFLAGS} -I$x_includes")
    CFLAGS="$save_CFLAGS"
  ]
  CPPFLAGS="$save_CPPFLAGS")
fi

dnl
dnl  SDL module
dnl
AC_ARG_ENABLE(sdl,
  [  --enable-sdl            SDL support (default enabled)])
if test "x$enable_sdl" != "xno"
then
  SDL_PATH=$PATH
  AC_ARG_WITH(sdl-config-path,
    [    --with-sdl-config-path=PATH sdl-config path (default search in \$PATH)],
    [ if test "x$with_sdl_config_path" != "xno"
      then
        SDL_PATH="$with_sdl_config_path:$PATH"
      fi ])
  AC_PATH_PROG(SDL12_CONFIG, sdl12-config, no, $SDL_PATH)
  SDL_CONFIG=${SDL12_CONFIG}
  SDL_HEADER="SDL12/SDL.h"
  if test x${SDL_CONFIG} = xno
  then
    AC_PATH_PROG(SDL11_CONFIG, sdl11-config, no, $SDL_PATH)
    SDL_CONFIG=${SDL11_CONFIG}
    SDL_HEADER="SDL11/SDL.h"
  fi
  if test x${SDL_CONFIG} = xno
  then
    AC_PATH_PROG(SDL_CONFIG, sdl-config, no, $SDL_PATH)
    SDL_HEADER="SDL/SDL.h"
  fi
  if test x${SDL_CONFIG} != xno
  then
    PLUGINS="${PLUGINS} sdl"
    sdl_CFLAGS="${sdl_CFLAGS} `${SDL_CONFIG} --cflags`"
    sdl_LDFLAGS="${sdl_LDFLAGS} `${SDL_CONFIG} --libs | sed 's,-rdynamic,,'`"
    CPPFLAGS="$save_CPPFLAGS $sdl_CFLAGS"
    AC_CHECK_HEADERS(${SDL_HEADER}, AC_DEFINE_UNQUOTED(SDL_INCLUDE_FILE,
      <${SDL_HEADER}>, Indicate whether we should use SDL/SDL.h or SDL11/SDL.h),
      [ AC_MSG_ERROR([The development package for SDL is not installed. 
Please install it and try again. Alternatively you can also configure with 
--disable-sdl.])
      ])
    CPPFLAGS="$save_CPPFLAGS"
    if expr 1.1.5 \> `$SDL_CONFIG --version` >/dev/null
    then
      AC_MSG_ERROR([The development package for SDL is not installed.
Please install it and try again. Alternatively you can also configure with
--disable-sdl.])
    fi
  elif test "x$enable_sdl" =  "xyes"
  then
    AC_MSG_ERROR([I couldn't find the SDL package. You can download libSDL
from http://www.libsdl.org/, or configure with --disable-sdl. Have a nice day.
    ])
  fi
fi

dnl
dnl  Windows DirectX module
dnl
AC_ARG_ENABLE(directx,
  [  --enable-directx        Win32 DirectX support (default enabled on Win32)])
if test "x$enable_directx" != "xno"
then
  if test x$SYS = xmingw32
  then
    AC_ARG_WITH(directx, 
    [    --with-directx=PATH   Win32 DirectX headers and libraries])
    if test "x$with_directx" = "x"
    then
      AC_CHECK_HEADERS(ddraw.h,
      [ PLUGINS="${PLUGINS} directx"
        directx_LDFLAGS="${directx_LDFLAGS} -lgdi32" ])
    else
      AC_MSG_CHECKING(for directX headers in ${with_directx})
      if test -f ${with_directx}/ddraw.h
      then
        PLUGINS="${PLUGINS} directx"
        directx_LDFLAGS="${directx_LDFLAGS} -L${with_directx}/lib -lgdi32"
        directx_CFLAGS="${directx_CFLAGS} -I${with_directx}"
        AC_MSG_RESULT(yes)
      else
        AC_MSG_RESULT(no)
        AC_MSG_ERROR([Cannot find ${with_directx}/ddraw.h!])
      fi
    fi
  fi
fi

dnl
dnl  Linux framebuffer module
dnl
AC_ARG_ENABLE(fb,
  [  --enable-fb             Linux framebuffer support (default enabled on Linux)])
    if test x$enable_fb != xno
    then
      AC_CHECK_HEADERS(linux/fb.h, [
        PLUGINS="${PLUGINS} fb"
      ])
    fi