configure.in 44.8 KB
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dnl Autoconf settings for vlc and libdvdcss
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AC_INIT(include/main.h)
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AC_CONFIG_HEADER(include/defs.h)
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AC_CANONICAL_SYSTEM
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HAVE_VLC=0
if test -r src/interface/main.c; then
  HAVE_VLC=1
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  VLC_VERSION="0.2.92-dev"
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  VLC_CODENAME=Ourumov
fi

HAVE_LIBDVDCSS=0
if test -r extras/libdvdcss/libdvdcss.c; then
  HAVE_LIBDVDCSS=1
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  LIBDVDCSS_VERSION="1.0.1-dev"
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  AC_SUBST(LIBDVDCSS_VERSION)
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  if test -r extras/libdvdcss/csskeys.h; then
    AC_DEFINE(HAVE_CSSKEYS,1,css decryption with player keys)
  fi
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fi
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dnl Save CFLAGS and LDFLAGS
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save_CFLAGS="${CFLAGS}"
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save_LDFLAGS="${LDFLAGS}"
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dnl Check for tools
AC_PROG_MAKE_SET
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AC_PROG_CC
AC_PROG_CPP
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dnl Find the right ranlib, even when cross-compiling
AC_CHECK_TOOL(RANLIB, ranlib, :)

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dnl Gettext stuff
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ALL_LINGUAS="de fr ru"
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AC_DEFINE_UNQUOTED(PACKAGE, "vlc")
AC_DEFINE_UNQUOTED(VERSION, "$VLC_VERSION")
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AM_GNU_GETTEXT

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dnl AM_PROG_LIBTOOL
AC_PROG_INSTALL

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dnl
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dnl  Endianness check, AC_C_BIGENDIAN doesn't work if we are cross-compiling
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dnl
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dnl  We give the user the opportunity to specify
dnl  --with-words=big or --with-words=little ; otherwise, try to guess
dnl
AC_ARG_WITH(words,
  [  --with-words=endianness Set endianness (big or little)])
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  case "x$withval" in
    xbig)
      ac_cv_c_bigendian=yes
      ;;
    xlittle)
      ac_cv_c_bigendian=no
      ;;
    *)
      dnl  Try to guess endianness by matching patterns on a compiled
      dnl  binary, by looking for an ASCII or EBCDIC string
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      AC_CACHE_CHECK([whether the byte order is big-endian],
        [ac_cv_c_bigendian],
        [ac_cv_c_bigendian=unknown
        [cat >conftest.c <<EOF
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        short am[] = { 0x4249, 0x4765, 0x6e44, 0x6961, 0x6e53, 0x7953, 0 };
        short ai[] = { 0x694c, 0x5454, 0x656c, 0x6e45, 0x6944, 0x6e61, 0 };
        void _a(void) { char*s = (char*)am; s = (char *)ai; }
        short ei[] = { 0x89D3, 0xe3e3, 0x8593, 0x95c5, 0x89c4, 0x9581, 0 };
        short em[] = { 0xc2c9, 0xc785, 0x95c4, 0x8981, 0x95e2, 0xa8e2, 0 };
        void _e(void) { char*s = (char*)em; s = (char*)ei; }
        int main(void) { _a(); _e(); return 0; }
EOF
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        ]
        if test -f conftest.c
        then 
          if ${CC-cc} conftest.c -o conftest.o >config.log 2>&1 \
              && test -f conftest.o
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          then
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            if test `grep -l BIGenDianSyS conftest.o`
            then
              ac_cv_c_bigendian=yes
            fi
            if test `grep -l LiTTleEnDian conftest.o`
            then
              ac_cv_c_bigendian=no
            fi
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          fi
        fi
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      ])
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      if test $ac_cv_c_bigendian = xunknown
      then
        AC_MSG_ERROR([Could not guess endianness, please use --with-words])
      fi
      ;;
  esac
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dnl  Now we know what to use for endianness, just put it in the header
if test $ac_cv_c_bigendian = yes
then
  AC_DEFINE(WORDS_BIGENDIAN, 1, big endian system)
fi
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dnl Check for system libs needed
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AC_CHECK_FUNCS(gettimeofday select strerror strtod strtol isatty)
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AC_CHECK_FUNC(connect,,[
  AC_CHECK_LIB(socket,connect,LIB="${LIB} -lsocket")
])
AC_CHECK_FUNC(gethostbyname,,[
  AC_CHECK_LIB(nsl,gethostbyname,LIB="${LIB} -lnsl")
])
AC_CHECK_FUNC(nanosleep,,[
  AC_CHECK_LIB(rt,nanosleep,LIB="${LIB} -lrt",[
    AC_CHECK_LIB(posix4,nanosleep,LIB="${LIB} -lposix4")
  ])
])
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AC_CHECK_FUNCS(usleep)
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AC_CHECK_FUNC(inet_aton,,[
  AC_CHECK_LIB(resolv,inet_aton,LIB="${LIB} -lresolv")
])
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AC_CHECK_FUNCS(vasprintf)
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AC_CHECK_FUNCS(swab)
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AC_CHECK_FUNCS([memalign valloc])
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AC_CHECK_FUNCS(sigrelse)

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dnl Check for getopt
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NEED_GETOPT=0
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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],
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    [AC_DEFINE(HAVE_GETOPT_LONG,1,getopt support) LIB="${LIB} -lgnugetopt"],
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    [NEED_GETOPT=1])])
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AC_TYPE_SIGNAL
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AC_CHECK_LIB(dl,dlopen,LIB="${LIB} -ldl")
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AC_CHECK_LIB(m,cos,
  LIB_IMDCT="${LIB_IMDCT} -lm"
  LIB_FILTER_DISTORT="${LIB_FILTER_DISTORT} -lm")
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AC_CHECK_LIB(m,pow,
  LIB_IMDCT="${LIB_IMDCT} -lm"
  LIB_IMDCT3DN="${LIB_IMDCT3DN} -lm"
  LIB_IMDCTSSE="${LIB_IMDCTSSE} -lm"
)
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dnl Check for pthreads - borrowed from XMMS
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THREAD_LIB=error
if test "x${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
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dnl Check for cthreads under GNU/Hurd for instance
AC_CHECK_LIB(threads,cthread_fork,THREAD_LIB="-lthreads")
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dnl Check for misc headers
AC_EGREP_HEADER(pthread_cond_t,pthread.h,[
  AC_DEFINE(PTHREAD_COND_T_IN_PTHREAD_H, 1,
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            Define if <pthread.h> defines pthread_cond_t.)])
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AC_EGREP_HEADER(strncasecmp,strings.h,[
  AC_DEFINE(STRNCASECMP_IN_STRINGS_H, 1,
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            Define if <strings.h> defines strncasecmp.)])
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dnl Check for headers
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AC_CHECK_HEADERS(getopt.h strings.h)
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AC_CHECK_HEADERS(sys/sockio.h fcntl.h sys/time.h sys/times.h)
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AC_CHECK_HEADERS(sys/soundcard.h machine/soundcard.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)

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AC_HEADER_TIME

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

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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$x_libraries = xNONE; then
    x_libraries=/usr/X11R6/lib
  fi
  saved_CPPFLAGS=$CPPFLAGS
  CPPFLAGS="$CPPFLAGS -I$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=$saved_CPPFLAGS
fi

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dnl Check for ntohl, etc.
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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
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dnl Check for inline function size limit
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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="${save_CFLAGS} -finline-limit-30000"
fi
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dnl Check for -W or -w flags
AC_CACHE_CHECK([if \$CC accepts -Wall -Winline],
    [ac_cv_c_Wall_Winline],
    [CFLAGS="${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

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dnl Check for Darwin plugin linking flags
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AC_CACHE_CHECK([if \$CC accepts -bundle -undefined error],
    [ac_cv_ld_darwin],
    [CFLAGS="${save_CFLAGS} -bundle -undefined error"
     AC_TRY_COMPILE([],,ac_cv_ld_darwin=yes, ac_cv_ld_darwin=no)])
if test x"$ac_cv_ld_darwin" != x"no"; then
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    PLDFLAGS="${PLDFLAGS} -bundle -undefined error"
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fi
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dnl Check for standard plugin linking flags
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AC_CACHE_CHECK([if \$CC accepts -shared],
    [ac_cv_ld_plugins],
    [CFLAGS="${save_CFLAGS} -shared"
     AC_TRY_COMPILE([],, ac_cv_ld_plugins=yes, ac_cv_ld_plugins=no)])
if test x"$ac_cv_ld_plugins" != x"no"; then
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    PLDFLAGS="${PLDFLAGS} -shared"
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fi
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dnl Check for soname setting
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if test x"${SOFLAGS}" = x; then
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    AC_CACHE_CHECK([for soname setting],
        [ac_cv_ld_soname],
        [
        # Standard
        try_SOFLAGS="-Wl,-soname -Wl,"
        LDFLAGS="${save_LDFLAGS} ${try_SOFLAGS}foo.so.0"
        AC_TRY_LINK([],,ac_cv_ld_soname="${try_SOFLAGS}", [
            # SunOS
            try_SOFLAGS="-Wl,-h -Wl,"
            LDFLAGS="${save_LDFLAGS} ${try_SOFLAGS}foo.so.0"
            AC_TRY_LINK([],,ac_cv_ld_soname="${try_SOFLAGS}",
                ac_cv_ld_soname=none)
        ])])
    if test x"$ac_cv_ld_soname" != x"none"; then
        SOFLAGS=$ac_cv_ld_soname
    else
        echo "
------------
Your system doesn't seem to have support for dynamic linking. You may
have problems using libdvdcss.
------------
"
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    fi
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fi

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dnl Checks for __attribute__(aligned()) directive
AC_CACHE_CHECK([__attribute__ ((aligned ())) support],
    [ac_cv_c_attribute_aligned],
    [ac_cv_c_attribute_aligned=0
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        CFLAGS="${save_CFLAGS} -Werror"
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    for ac_cv_c_attr_align_try in 2 4 8 16 32 64; do
        AC_TRY_COMPILE([],
        [static char c __attribute__ ((aligned($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

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dnl End of the bizarre compilation tests
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CFLAGS="${save_CFLAGS}"
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LDFLAGS="${save_LDFLAGS}"
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dnl Check for boolean_t
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AC_CACHE_CHECK([for boolean_t in sys/types.h],
    [ac_cv_c_boolean_t_sys_types_h],
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    [AC_TRY_COMPILE([#include <sys/types.h>], [boolean_t foo;],
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     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],
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    [AC_TRY_COMPILE([#include <pthread.h>], [boolean_t foo;],
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     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],
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    [AC_TRY_COMPILE([#include <cthreads.h>], [boolean_t foo;],
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     ac_cv_c_boolean_t_cthreads_h=yes, ac_cv_c_boolean_t_cthreads_h=no)])
if test x"$ac_cv_c_boolean_t_cthreads_h" != x"no"; then
    AC_DEFINE(BOOLEAN_T_IN_CTHREADS_H, 1, Define if <cthreads.h> defines boolean_t.)
fi
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dnl
dnl  Check the CPU
dnl
case x"${target_cpu}" in
  x)
    ARCH=unknown
    ;;
  *)
    ARCH=${target_cpu}
    ;;
esac
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dnl
dnl  default modules
dnl
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BUILTINS="${BUILTINS} mpeg_es mpeg_ps mpeg_ts memcpy idct idctclassic motion imdct downmix chroma_i420_rgb chroma_i420_yuy2 chroma_i422_yuy2 chroma_i420_ymga mpeg_adec ac3_adec mpeg_vdec"
PLUGINS="${PLUGINS} lpcm_adec ac3_spdif spudec filter_deinterlace filter_invert filter_wall filter_transform filter_distort"
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dnl
dnl  Accelerated modules
dnl
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MMX_MODULES="memcpymmx idctmmx motionmmx chroma_i420_rgb_mmx chroma_i420_yuy2_mmx chroma_i422_yuy2_mmx chroma_i420_ymga_mmx"
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MMXEXT_MODULES="memcpymmxext idctmmxext motionmmxext"
THREEDNOW_MODULES="memcpy3dn imdct3dn downmix3dn"
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SSE_MODULES="imdctsse downmixsse"
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ALTIVEC_MODULES="idctaltivec motionaltivec"
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AC_CACHE_CHECK([if \$CC groks MMX inline assembly],
    [ac_cv_mmx_inline],
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    [AC_TRY_COMPILE(,[void *p;asm volatile("packuswb %%mm1,%%mm2"::"r"(p));],
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                    ac_cv_mmx_inline=yes, ac_cv_mmx_inline=no)])
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if test x"$ac_cv_mmx_inline" != x"no"; then
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  ACCEL_MODULES="${ACCEL_MODULES} ${MMX_MODULES}"
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fi
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AC_CACHE_CHECK([if \$CC groks MMX EXT inline assembly],
    [ac_cv_mmxext_inline],
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    [AC_TRY_COMPILE(,[void *p;asm volatile("maskmovq %%mm1,%%mm2"::"r"(p));],
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                    ac_cv_mmxext_inline=yes, ac_cv_mmxext_inline=no)])
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if test x"$ac_cv_mmxext_inline" != x"no"; then
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  ACCEL_MODULES="${ACCEL_MODULES} ${MMXEXT_MODULES}"
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fi
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AC_CACHE_CHECK([if \$CC groks 3D Now! inline assembly],
    [ac_cv_3dnow_inline],
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    [AC_TRY_COMPILE(,[void *p;asm volatile("pfadd %%mm1,%%mm2"::"r"(p));],
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                    ac_cv_3dnow_inline=yes, ac_cv_3dnow_inline=no)])
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if test x"$ac_cv_3dnow_inline" != x"no"; then
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  AC_DEFINE(CAN_COMPILE_3DNOW, 1, Define if \$CC groks 3D Now! inline assembly.)
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  ACCEL_MODULES="${ACCEL_MODULES} ${THREEDNOW_MODULES}"
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fi
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AC_CACHE_CHECK([if \$CC groks SSE inline assembly],
    [ac_cv_sse_inline],
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    [AC_TRY_COMPILE(,[void *p;asm volatile("xorps %%xmm1,%%xmm2"::"r"(p));],
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                    ac_cv_sse_inline=yes, ac_cv_sse_inline=no)])
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if test x"$ac_cv_sse_inline" != x"no"; then
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  AC_DEFINE(CAN_COMPILE_SSE, 1, Define if \$CC groks SSE inline assembly.)
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  ACCEL_MODULES="${ACCEL_MODULES} ${SSE_MODULES}"
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fi
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AC_CACHE_CHECK([if \$CC groks Altivec inline assembly],
    [ac_cv_altivec_inline],
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    [AC_TRY_COMPILE(,[asm volatile("vperm 0,1,2,3");],
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         ac_cv_altivec_inline=yes,
         [save_CFLAGS=$CFLAGS
          CFLAGS="$CFLAGS -Wa,-m7400"
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          AC_TRY_COMPILE(,[asm volatile("vperm 0,1,2,3");],
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            [ac_cv_altivec_inline="-Wa,-m7400"],
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            ac_cv_altivec_inline=no)
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          CFLAGS=$save_CFLAGS
         ])])
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if test x"$ac_cv_altivec_inline" != x"no"; then
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  AC_DEFINE(CAN_COMPILE_ALTIVEC, 1, Define if \$CC groks ALTIVEC inline assembly.)
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  if test x"$ac_cv_altivec_inline" != x"yes"; then
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    CFLAGS_IDCTALTIVEC="$CFLAGS_IDCTALTIVEC $ac_cv_altivec_inline"
    CFLAGS_MOTIONALTIVEC="$CFLAGS_MOTIONALTIVEC $ac_cv_altivec_inline"
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    CFLAGS_VLC="$CFLAGS_VLC $ac_cv_altivec_inline"
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  fi
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  ACCEL_MODULES="${ACCEL_MODULES} ${ALTIVEC_MODULES}"
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fi
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AC_CACHE_CHECK([if \$CC groks Altivec C extensions],
    [ac_cv_c_altivec],
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    [save_CFLAGS=$CFLAGS
     CFLAGS="$CFLAGS -faltivec"
     # Darwin test
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     AC_TRY_COMPILE(,[vec_mtvscr((vector unsigned int)(0));],
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        ac_cv_c_altivec=-faltivec, [
        # Linux/PPC test
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        CFLAGS="$save_CFLAGS $CFLAGS_IDCTALTIVEC -fvec"
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        AC_TRY_COMPILE(,[vec_mtvscr((vector unsigned int)(0));],
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            [ac_cv_c_altivec="-fvec"], ac_cv_c_altivec=no)
        ])
     CFLAGS=$save_CFLAGS
    ])
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if test x"$ac_cv_c_altivec" != x"no"; then
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  AC_DEFINE(CAN_COMPILE_C_ALTIVEC, 1, Define if your compiler groks C altivec extensions.)
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  CFLAGS_IDCTALTIVEC="$CFLAGS_IDCTALTIVEC $ac_cv_c_altivec"
  CFLAGS_MOTIONALTIVEC="$CFLAGS_MOTIONALTIVEC $ac_cv_c_altivec"
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  CFLAGS_VLC="$CFLAGS_VLC $ac_cv_c_altivec"
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  ACCEL_MODULES="${ACCEL_MODULES} ${ALTIVEC_MODULES}"
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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
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  LIB_IDCTALTIVEC="${LIB_IDCTALTIVEC} -framework vecLib"
  LIB_MOTIONALTIVEC="${LIB_MOTIONALTIVEC} -framework vecLib"
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  LIB="${LIB} -framework vecLib"
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fi

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dnl
dnl  Check the operating system
dnl
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case x"${target_os}" in
  x)
    SYS=unknown
    ;;
  xlinux*)
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    SYS=linux
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    ;;
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  xbsdi*)
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    SYS=bsdi
    ;;
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  xdarwin*)
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    SYS=darwin
    ;;
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  x*mingw32*)
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    SYS=mingw32
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    AC_CHECK_TOOL(WINDRES, windres, :)
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    LIB_MPEG_TS="${LIB_MPEG_TS} -lws2_32"
    LIB_RC="${LIB_RC} -lws2_32"
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    ;;
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  x*nto*)
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    SYS=nto
    LIB_X11="${LIB_X11} -lsocket"
    LIB_XVIDEO="${LIB_XVIDEO} -lsocket"
    ;;
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  xbeos)
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    SYS=beos
    LIB="${LIB} -lbe"
    LIB_BEOS="${LIB_BEOS} -lbe -lgame -lroot -ltracker"
    PLDFLAGS="${PLDFLAGS} -nostart"
    ;;
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  x*)
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    SYS=${target_os}
    ;;
esac

dnl
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dnl  DVD and VCD devices
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dnl
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case x$SYS in
  xmingw32)
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    DVD_DEVICE="E:"
    VCD_DEVICE="E:"
    ;;
  *)
    DVD_DEVICE="/dev/dvd"
    VCD_DEVICE="/dev/cdrom"
    ;;
esac

AC_DEFINE_UNQUOTED(DVD_DEVICE, "$DVD_DEVICE")
AC_DEFINE_UNQUOTED(VCD_DEVICE, "$VCD_DEVICE")

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dnl
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dnl  libdvdcss: check for DVD ioctls
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dnl
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dnl  default is no
CAN_BUILD_LIBDVDCSS=0

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dnl  for windoze
AC_CHECK_HEADERS(winioctl.h,[
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  CAN_BUILD_LIBDVDCSS="${HAVE_LIBDVDCSS}"
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])

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dnl  for Un*x and BeOS
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AC_CHECK_HEADERS(sys/ioctl.h,[
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  CAN_BUILD_LIBDVDCSS="${HAVE_LIBDVDCSS}"
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  AC_CHECK_HEADERS(sys/cdio.h sys/dvdio.h linux/cdrom.h dvd.h)
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  BSD_DVD_STRUCT=0
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  LINUX_DVD_STRUCT=0
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  OPENBSD_DVD_STRUCT=0
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  dnl
  dnl Old FreeBSD: sys/cdio.h
  dnl
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  AC_EGREP_HEADER(dvd_struct,sys/cdio.h,[
    AC_DEFINE(DVD_STRUCT_IN_SYS_CDIO_H, 1,
              Define if <sys/cdio.h> defines dvd_struct.)
    AC_EGREP_HEADER(struct dvd_struct,sys/cdio.h,[
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                    BSD_DVD_STRUCT=1],[LINUX_DVD_STRUCT=1; OPENBSD_DVD_STRUCT=1])
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  ])
  dnl
  dnl Newer FreeBSD: sys/dvdio.h
  dnl
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  AC_EGREP_HEADER(dvd_struct,sys/dvdio.h,[
    AC_DEFINE(DVD_STRUCT_IN_SYS_DVDIO_H, 1,
              Define if <sys/dvdio.h> defines dvd_struct.)
    AC_EGREP_HEADER(struct dvd_struct,sys/dvdio.h,[
                    BSD_DVD_STRUCT=1],[LINUX_DVD_STRUCT=1])
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  ])
  dnl
  dnl Linux: linux/cdrom.h
  dnl
  AC_EGREP_HEADER(dvd_struct,linux/cdrom.h,[
    AC_DEFINE(DVD_STRUCT_IN_LINUX_CDROM_H, 1,
              Define if <linux/cdrom.h> defines DVD_STRUCT.)
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    LINUX_DVD_STRUCT=1
  ])
  dnl
  dnl BSDI: dvd.h
  dnl
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  NEED_BSDI_LIBDVD=0
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  AC_EGREP_HEADER(dvd_struct,dvd.h,[
    AC_DEFINE(DVD_STRUCT_IN_DVD_H, 1,
              Define if <dvd.h> defines DVD_STRUCT.)
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    LIB_LIBDVDCSS="${LIB_LIBDVDCSS} -ldvd"
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    LINUX_DVD_STRUCT=1
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  ],[
    dnl
    dnl BSDI: /sys/dev/scsi/scsi_ioctl.h, using our own libdvd
    dnl
    AC_CHECK_HEADERS(/sys/dev/scsi/scsi_ioctl.h,[
      NEED_BSDI_LIBDVD=1
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      AC_DEFINE(DVD_STRUCT_IN_BSDI_DVDIOCTL_DVD_H, 1,
                Define if <extras/BSDI_dvdioctl/dvd.h> defines DVD_STRUCT.)
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      SRC_DVDCSS_EXTRA="${SRC_DVDCSS_EXTRA} bsdi_dvdioctl.c"
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      LINUX_DVD_STRUCT=1
    ])
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  ])
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  dnl
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  dnl Solaris: sys/scsi/scsi_types.h, sys/scsi/impl/uscsi.h
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  dnl
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  AC_CHECK_HEADER(sys/scsi/scsi_types.h,[
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    AC_CHECK_HEADER(sys/scsi/impl/uscsi.h,[
      AC_DEFINE(SOLARIS_USCSI, 1, Have userspace SCSI headers.)
    ])
  ])
  dnl
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  dnl HP-UX: sys/scsi.h
  dnl
  AC_CHECK_HEADER(sys/scsi.h,[
    AC_EGREP_HEADER(sctl_io,sys/scsi.h,[
      AC_DEFINE(HPUX_SCTL_IO, 1, Define if <sys/scsi.h> defines sctl_io.)
    ])
  ])
  dnl
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  dnl Final tests to check what was detected
  dnl
  if test x$LINUX_DVD_STRUCT = x1; then
    AC_DEFINE(HAVE_LINUX_DVD_STRUCT, 1,
              Define if Linux-like dvd_struct is defined.)
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    if test x$OPENBSD_DVD_STRUCT = x1; then
      AC_DEFINE(HAVE_OPENBSD_DVD_STRUCT, 1,
                Define if OpenBSD-like dvd_struct is defined.)
    fi
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  else
    if test x$BSD_DVD_STRUCT = x1; then
      AC_DEFINE(HAVE_BSD_DVD_STRUCT, 1,
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                Define if FreeBSD-like dvd_struct is defined.)
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    fi
  fi
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])

dnl
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dnl  Special arch tuning
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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$withval" != "x"; then
    TUNING=$withval
else
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    if test x${target_cpu} = xi686 -o x${target_cpu} = xi586 -o x${target_cpu} = xi486 -o x${target_cpu} = xi386; then TUNING="pentiumpro"
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    else
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        if test x${target_cpu} = xpowerpc; then TUNING="750"; fi
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    fi
fi
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dnl
dnl  Enable release-specific flags
dnl
AC_ARG_ENABLE(release,
[  --enable-release        Activate extra optimizations (default disabled)],
[ if test x$enableval = xyes; then RELEASE=1; fi ],
[ VLC_VERSION="${VLC_VERSION}_`date +%Y-%m-%d`";
  LIBDVDCSS_VERSION="${LIBDVDCSS_VERSION}_`date +%Y-%m-%d`"; ])

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dnl
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dnl  x86 accelerations
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dnl
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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} ${ACCEL_MODULES}"
fi
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dnl
dnl  AltiVec acceleration
dnl
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AC_ARG_ENABLE(altivec,
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[  --disable-altivec       Disable altivec optimizations (default enabled on PPC)],
[ if test x$enableval = xyes; then ARCH="${ARCH} altivec";
    BUILTINS="${BUILTINS} ${ACCEL_MODULES}"; fi ],
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[ if test x${target_cpu} = xpowerpc; then ARCH="${ARCH} altivec";
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    BUILTINS="${BUILTINS} ${ACCEL_MODULES}"; fi ])
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dnl
dnl  Debugging mode
dnl
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DEBUG=0
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AC_ARG_ENABLE(debug,
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[  --enable-debug          Enable debug mode (default disabled)],
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[ if test x$enableval = xyes; then DEBUG=1; fi ])
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dnl
dnl  Trace mode
dnl
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TRACE=0
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AC_ARG_ENABLE(trace,
[  --enable-trace          Enable trace mode (default disabled)],
[ if test x$enableval = xyes; then TRACE=1; fi ])

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dnl
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dnl  Profiling
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dnl
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GPROF=0
AC_ARG_ENABLE(gprof,
[  --enable-gprof          Enable gprof profiling (default disabled)],
[ if test x$enableval = xyes; then GPROF=1; fi ])

CPROF=0
AC_ARG_ENABLE(cprof,
[  --enable-cprof          Enable cprof profiling (default disabled)],
[ if test x$enableval = xyes;
  then
    LIB="${LIB} -lcprof"
    CPROF=1
  fi
])
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dnl
dnl  Enable/disable optimizations
dnl
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AC_ARG_ENABLE(optimizations,
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[  --disable-optimizations Disable compiler optimizations (default enabled)],
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[ if test x$enableval = xno; then OPTIMS=0; fi ],
[ OPTIMS=1 ])
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dnl
dnl  GNU portable threads
dnl
AC_ARG_ENABLE(pth,
  [  --enable-pth            Enable GNU Pth support (default disabled)],
  [ if test x$enableval = xyes; then
    AC_CHECK_LIB(pth,pth_init)
    AC_EGREP_HEADER(pth_init,pth.h,[
      AC_DEFINE(PTH_INIT_IN_PTH_H, 1,
                Define if <pth.h> defines pth_init)
    THREAD_LIB="-lpth"
    fi])
])

LIB="${LIB} ${THREAD_LIB}"

dnl
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dnl  DVD module: check for installed libdvdcss or local libdvdcss
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dnl
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NEED_LIBDVDCSS=0
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STATIC_LIBDVDCSS=0
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DUMMY_LIBDVDCSS=0
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AC_ARG_WITH(dvdcss,
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  [  --with-dvdcss[=name]    way to use libdvdcss, either 'yes' or 'no',
                          or 'local-static', 'local-shared', or a path to
                          another libdvdcss such as '/usr/local'
                          (default 'local-static')],
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  [ case "x${withval}" in
    xlocal-static|xyes)
      # local libdvdcss, statically linked
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      BUILTINS="${BUILTINS} dvd"
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      if test x${CAN_BUILD_LIBDVDCSS} = x1
      then
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        NEED_LIBDVDCSS=1
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        STATIC_LIBDVDCSS=1
        CFLAGS_DVD="${CFLAGS_DVD} -I../../extras/libdvdcss"
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        LIB_DVD="${LIB_DVD} lib/libdvdcss.a ${LIB_LIBDVDCSS}"
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      fi
    ;;
    xlocal-shared)
      # local libdvdcss, dynamically linked
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      PLUGINS="${PLUGINS} dvd"
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      if test x${CAN_BUILD_LIBDVDCSS} = x1
      then
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        NEED_LIBDVDCSS=1
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        CFLAGS_DVD="${CFLAGS_DVD} -I../../extras/libdvdcss"
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        LIB_DVD="${LIB_DVD} -L../../lib -ldvdcss"
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      fi
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    ;;
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    xno)
      # don't use libdvdcss at all, build a DVD module that can dlopen() it
      BUILTINS="${BUILTINS} dvd"
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      DUMMY_LIBDVDCSS=1
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      SRC_DVD_EXTRA="${SRC_DVD_EXTRA} dummy_dvdcss.c"
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      CFLAGS_DVD="${CFLAGS_DVD} -DGOD_DAMN_DMCA"
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      CFLAGS_DVD="${CFLAGS_DVD} -DLIBDVDCSS_VERSION=\"${LIBDVDCSS_VERSION}\""
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      LIB_DVD="${LIB_DVD} -ldl"
    ;;
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    *)
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      # existing libdvdcss
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      PLUGINS="${PLUGINS} dvd"
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      if test "x$withval" != "xyes"
      then
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        LIB_DVD="${LIB_DVD} -L"$withval"/lib"
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        CFLAGS_DVD="${CFLAGS_DVD} -I"$withval"/include"
      fi
      LIB_DVD="${LIB_DVD} -ldvdcss"
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    esac ],
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  # user didn't decide, we choose to use local libdvdcss and link statically
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  # if libdvdcss is in the archive, or to use the dummy replacement otherwise.
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  [ if test x${CAN_BUILD_LIBDVDCSS} = x1
    then
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      BUILTINS="${BUILTINS} dvd"
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      NEED_LIBDVDCSS=1
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      STATIC_LIBDVDCSS=1
      CFLAGS_DVD="${CFLAGS_DVD} -I../../extras/libdvdcss"
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      LIB_DVD="${LIB_DVD} lib/libdvdcss.a ${LIB_LIBDVDCSS}"
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    else
      # XXX: no check for libdl is done, don't try this at home !
      BUILTINS="${BUILTINS} dvd"
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      DUMMY_LIBDVDCSS=1
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      SRC_DVD_EXTRA="${SRC_DVD_EXTRA} dummy_dvdcss.c"
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      CFLAGS_DVD="${CFLAGS_DVD} -DGOD_DAMN_DMCA"
      LIB_DVD="${LIB_DVD} -ldl"
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    fi ])
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dnl
dnl DVDREAD module: check for libdvdread plugin
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if test x${DUMMY_LIBDVDCSS} = x1; then STATIC_LIBDVDREAD=1; fi
if test x${STATIC_LIBDVDCSS} = x1; then STATIC_LIBDVDREAD=1; fi
AC_ARG_WITH(dvdread,
  [  --with-dvdread[=name]   way to use libdvdread,
                          same options as --with-dvdcss (default no)],
  [ case "x${withval}" in
    xlocal-static|xyes)
      if test x${STATIC_LIBDVDREAD} = x1
      then
        BUILTINS="${BUILTINS} dvdread" 
        CFLAGS_DVDREAD="${CFLAGS_DVDREAD} ${CFLAGS_DVD} -I../../extras/libdvdread"
        LIB_DVDREAD="${LIB_DVDREAD} lib/libdvdread.a ${LIB_DVD}"
      else
	AC_MSG_ERROR([Can't link static dvdread with shared dvdcss])
      fi
    ;;
    xno)
    ;;
    x)
      if test x${STATIC_LIBDVDREAD} = x1
      then
        BUILTINS="${BUILTINS} dvdread" 
        CFLAGS_DVDREAD="${CFLAGS_DVDREAD} ${CFLAGS_DVD} -I../../extras/libdvdread"
        LIB_DVDREAD="${LIB_DVDREAD} lib/libdvdread.a ${LIB_DVD}"
      else
        PLUGINS="${PLUGINS} dvdread"
        CFLAGS_DVDREAD="${CFLAGS_DVDREAD} -I../../extras/libdvdread  ${CFLAGS_DVD}"
        LIB_DVDREAD="${LIB_DVDREAD} -Llib -ldvdread ${LIB_DVD}"
      fi 
    ;;
    *)
      if test "x$withval" != "xlocal-shared"
      then
        LIB_DVDREAD="${LIB_DVDREAD} -L"$withval"/lib"
        CFLAGS_DVDREAD="${CFLAGS_DVDREAD} -I"$withval"/include"
      else
        LIB_DVDREAD="${LIB_DVDREAD} -L../../lib"
        CFLAGS_DVDREAD="${CFLAGS_DVDREAD} -I../../extras/libdvdread"
      fi
      if test x${STATIC_LIBDVDCSS} = x1
      then
	AC_MSG_ERROR([Can't link shared dvdread with static dvdcss])
      else
        PLUGINS="${PLUGINS} dvdread"
        CFLAGS_DVDREAD="${CFLAGS_DVDREAD} ${CFLAGS_DVD}"
        LIB_DVDREAD="${LIB_DVDREAD} -ldvdread ${LIB_DVD}"
      fi
    esac
    if test x${DUMMY_LIBDVDCSS} = x1
    then
      LIB_LIBDVDREAD="${LIB_LIBDVDREAD} -ldl"
    else
      LIB_LIBDVDREAD="${LIB_LIBDVDREAD} -L../../lib -ldvdcss"
    fi ])
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dnl
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dnl  VCD module
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dnl
AC_ARG_ENABLE(vcd,
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  [  --enable-vcd            VCD support for Linux (default enabled)])
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if test x$enable_vcd != xno
then
  AC_EGREP_HEADER(cdrom_msf0,linux/cdrom.h,[
    BUILTINS="${BUILTINS} vcd"
  ])
fi
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if test x$enable_vcd != xno -a "${SYS}" = "bsdi"
then
  BUILTINS="${BUILTINS} vcd"
fi

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dnl
dnl  dummy plugin
dnl
AC_ARG_ENABLE(dummy,
  [  --disable-dummy         dummy module (default enabled)])
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if test x$enable_dummy != xno
then
  BUILTINS="${BUILTINS} dummy"
fi
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dnl
dnl  null plugin
dnl
AC_ARG_ENABLE(null,
  [  --disable-null          Null module (default enabled)])
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if test x$enable_null != xno
then
  BUILTINS="${BUILTINS} null"
fi
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dnl
dnl  rc plugin
dnl
AC_ARG_ENABLE(rc,
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  [  --disable-rc            Remote Control module (default enabled)])

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if test x$enable_rc != xno
then
  BUILTINS="${BUILTINS} rc"
fi
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dnl
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dnl  mad plugin
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dnl
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AC_ARG_WITH(mad,
  [  --with-mad[=PATH]       libmad module (default disabled)],
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  [ if test "x$with_val" != "xno"; then
      if test -n $with_val; then
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        CFLAGS_MAD="${CFLAGS_MAD} -I$with_val/include"
        LIB_MAD="${LIB_MAD} -L$with_val/lib -lmad"
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      else
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        LIB_MAD="${LIB_MAD} -lmad"
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      fi
      save_CFLAGS=$CFLAGS
      save_LDFLAGS=$LDFLAGS
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      CFLAGS="$CFLAGS $CFLAGS_MAD"
      LDFLAGS="$LDFLAGS $LIB_MAD"
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      AC_CHECK_HEADERS(mad.h, ,
      [ echo "Cannot find development headers for libmad..."
        exit 1
      ])
      AC_CHECK_LIB(mad, mad_bit_init, ,
      [ echo "Cannot find libmad library..."
        exit 1
      ])
      CFLAGS=$save_CFLAGS
      LDFLAGS=$save_LDFLAGS
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      PLUGINS="${PLUGINS} mad"
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    fi ])

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dnl special case for BeOS
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if test x$SYS = xbeos
then
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    BUILTINS="${BUILTINS} beos"
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dnl default case
else

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dnl
dnl  OSS /dev/dsp module
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dnl  (enabled by default except on win32)
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AC_ARG_ENABLE(dsp,
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  [  --disable-dsp           Linux /dev/dsp support (default enabled)])
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if test x$enable_dsp != xno &&
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  (test x$SYS != xmingw32 || test x$enable_dsp = xyes)
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then
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  AC_CHECK_HEADERS(sys/soundcard.h machine/soundcard.h, [
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    PLUGINS="${PLUGINS} dsp"
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  ])
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fi
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dnl
dnl  Esound module
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AC_ARG_ENABLE(esd,
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  [  --enable-esd            Esound library support (default disabled)],
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  [if test x$enable_esd = xyes
   then
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     AC_PATH_PROG(ESD_CONFIG, esd-config, no)
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     if test x${ESD_CONFIG} != xno
     then
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       PLUGINS="${PLUGINS} esd"
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       CFLAGS_ESD="${CFLAGS_ESD} `${ESD_CONFIG} --cflags`"
       LIB_ESD="${LIB_ESD} `${ESD_CONFIG} --libs`"
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     fi
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   fi])

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dnl
dnl  aRts module
dnl
AC_ARG_ENABLE(arts,
  [  --enable-arts           aRts sound server (default disabled)],
  [if test x$enable_arts = xyes
   then
     AC_PATH_PROG(ARTS_CONFIG, artsc-config, no)
     if test x${ARTS_CONFIG} != xno
     then
       PLUGINS="${PLUGINS} arts"
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       CFLAGS_ARTS="${CFLAGS_ARTS} `${ARTS_CONFIG} --cflags`"
       LIB_ARTS="${LIB_ARTS} `${ARTS_CONFIG} --libs `"
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     fi
   fi])

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dnl
dnl  MacOS X module
dnl
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AC_ARG_ENABLE(macosx,
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  [  --enable-macosx         MacOS X support (default enabled on MacOS X)],
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  [if test x$enable_macosx = xyes
   then
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     BUILTINS="${BUILTINS} macosx"
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     LIB_MACOSX="${LIB_MACOSX} -framework CoreAudio -framework Cocoa -framework AGL -framework QuickTime -lobjc"
     CFLAGS_MACOSX="${CFLAGS_MACOSX} -ObjC"
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     LIB="${LIB} -ObjC"
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   fi],
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  [AC_CHECK_HEADERS(Cocoa/Cocoa.h,
     BUILTINS="${BUILTINS} macosx"
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     LIB_MACOSX="${LIB_MACOSX} -framework CoreAudio -framework Cocoa -framework AGL -framework QuickTime -lobjc"
     CFLAGS_MACOSX="${CFLAGS_MACOSX} -ObjC"
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     LIB="${LIB} -ObjC"
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   )])

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dnl
dnl  QNX RTOS module
dnl
AC_ARG_ENABLE(qnx,
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  [  --disable-qnx           QNX RTOS support (default enabled on QNX RTOS)])
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    if test x$enable_qnx != xno
    then
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      AC_CHECK_HEADERS(Ph.h, [
        PLUGINS="${PLUGINS} qnx"
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        LIB_QNX="${LIB_QNX} -lasound -lph"
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      ])
    fi

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dnl
dnl  Linux framebuffer module
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AC_ARG_ENABLE(fb,
  [  --enable-fb             Linux framebuffer support (default disabled)],
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  [ if test x$enable_fb = xyes
    then
      PLUGINS="${PLUGINS} fb"
    fi ])
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dnl
dnl  Linux MGA module
dnl
AC_ARG_ENABLE(mga,
  [  --enable-mga            Linux kernel Matrox support (default disabled)],
  [ if test x$enable_mga = xyes
    then
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      PLUGINS="${PLUGINS} mga xmga"
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    fi ])

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dnl
dnl  GGI module
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AC_ARG_WITH(ggi,
  [  --with-ggi[=name]       GGI support (default disabled)],
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  [ if test "x$withval" != "xno"
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    then
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      PLUGINS="${PLUGINS} ggi"
      if test "x$withval" != "xyes"
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      then
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        LIB_GGI="${LIB_GGI} -l$withval"
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      else
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        LIB_GGI="${LIB_GGI} -lggi"
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      fi
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    fi ])
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dnl
dnl  SDL module
dnl
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AC_ARG_ENABLE(sdl,
  [  --disable-sdl           SDL support (default enabled)])
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if test "x$enable_sdl" != "xno"
1105
then
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  SDL_PATH=$PATH
  AC_ARG_WITH(sdl-config-path,
    [  --with-sdl-config-path=path sdl-config path (default search in \$PATH)],
    [ if test "x$withval" != "xno"
      then
        SDL_PATH=$withval:$PATH
      fi ])
  AC_PATH_PROG(SDL12_CONFIG, sdl12-config, no, $SDL_PATH)
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  SDL_CONFIG=${SDL12_CONFIG}
  SDL_HEADER="SDL12/SDL.h"
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  if test x${SDL_CONFIG} = xno
  then
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    AC_PATH_PROG(SDL11_CONFIG, sdl11-config, no, $SDL_PATH)
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    SDL_CONFIG=${SDL11_CONFIG}
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    SDL_HEADER="SDL11/SDL.h"
  fi
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  if test x${SDL_CONFIG} = xno
  then
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    AC_PATH_PROG(SDL_CONFIG, sdl-config, no, $SDL_PATH)
1125
    SDL_HEADER="SDL/SDL.h"
1126
  fi
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  if test x${SDL_CONFIG} != xno
  then
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    PLUGINS="${PLUGINS} sdl"
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    CFLAGS_SDL="${CFLAGS_SDL} `${SDL_CONFIG} --cflags`"
    LIB_SDL="${LIB_SDL} `${SDL_CONFIG} --libs | sed 's,-rdynamic,,'`"
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    save_CPPFLAGS=$CPPFLAGS
    CPPFLAGS="$CPPFLAGS $CFLAGS_SDL"
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    AC_CHECK_HEADERS(${SDL_HEADER}, AC_DEFINE_UNQUOTED(SDL_INCLUDE_FILE,
      <${SDL_HEADER}>, Indicate whether we should use SDL/SDL.h or SDL11/SDL.h),
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      [ AC_MSG_ERROR([The development package for SDL is not installed. 
Please install it and try again. Alternatively you can also configure with 
--disable-sdl.])
      ])
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    CPPFLAGS=$save_CPPFLAGS
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    if expr 1.1.5 \> `$SDL_CONFIG --version` >/dev/null
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    then
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      AC_MSG_ERROR([The development package for SDL is not installed.
Please install it and try again. Alternatively you can also configure with
--disable-sdl.])
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    fi
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  elif test "x$enable_sdl" =  "xyes"
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  then
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    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.
    ])
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  fi
fi
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dnl
dnl  Windows DirectX module
dnl
1158
AC_ARG_ENABLE(directx,
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  [  --disable-directx       Win32 DirectX support (default enabled on Win32)])
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if test "x$enableval" != "xno"
then
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  if test x$SYS = xmingw32
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  then
    AC_ARG_WITH(directx-path, 
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    [  --with-directx-path=path Win32 DirectX headers and libraries])
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    if test "x$with_directx_path" = "x"
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    then
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      AC_CHECK_HEADERS(directx.h,
      [ PLUGINS="${PLUGINS} directx"
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        LIB_DIRECTX="${LIB_DIRECTX} -lgdi32" ])
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    else
      AC_MSG_CHECKING(for directX headers in ${withval})
      if test -f ${withval}/include/directx.h
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      then
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        PLUGINS="${PLUGINS} directx"
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        LIB_DIRECTX="${LIB_DIRECTX} -L${withval}/lib -lgdi32"
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        INCLUDE="${INCLUDE} -I${withval}/include"
        AC_MSG_RESULT(yes)
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      else
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        AC_MSG_RESULT(no)
        AC_MSG_ERROR([Cannot find ${withval}/include/directx.h!])
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      fi
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    fi
  fi
fi
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dnl
dnl  win32 waveOut plugin
dnl
AC_ARG_ENABLE(waveout,
  [  --disable-waveout       Win32 waveOut module (default enabled on Win32)])
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