configure.ac 127 KB
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dnl Autoconf settings for vlc
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dnl $Id$
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AC_INIT(vlc,0.7.3-svn)
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CONFIGURE_LINE="$0 $*"
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CODENAME="Bond"
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AC_PREREQ(2.50)
AC_CONFIG_SRCDIR(src/libvlc.c)
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AC_CONFIG_AUX_DIR(autotools)
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AC_CANONICAL_SYSTEM

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dnl XXX: we don't put any flags here, because automake 1.5 doesn't support
dnl them. And we need the comma otherwize automake will choke on it.
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AM_INIT_AUTOMAKE(vlc,0.7.3-svn)
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AM_CONFIG_HEADER(config.h)

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dnl
dnl  Save *FLAGS
dnl
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AX_SAVE_FLAGS
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dnl
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dnl Check for tools
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dnl
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AC_PROG_CC
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AM_PROG_CC_C_O
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AC_PROG_CPP
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AC_PROG_CXX
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AC_PROG_CXXCPP
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AC_PROG_MAKE_SET
AC_PROG_INSTALL
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dnl AC_PROG_EGREP only exists in autoconf 2.54+, so we use AC_EGREP_CPP right
dnl now otherwise it might be set in an obscure if statement.
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AC_EGREP_CPP(foo,foo)
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dnl AC_PROG_OBJC doesn't seem to exist, this is the KDE workaround
AC_MSG_CHECKING(for an Objective-C compiler)
OBJC="${CXX}"
AC_SUBST(OBJC)
OBJCFLAGS="${CXXFLAGS} -fgnu-runtime -fconstant-string-class=NSConstantString"
AC_SUBST(OBJCFLAGS)
dnl _AM_DEPENDENCIES(OBJC) doesn't work, so hard code OBJCDEPMODE here
#OBJCDEPMODE="depmode=gcc3"
#AC_SUBST(OBJCDEPMODE)
_AM_DEPENDENCIES(OBJC)
AC_MSG_RESULT(not implemented yet)

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dnl Find the right ranlib, even when cross-compiling
AC_CHECK_TOOL(RANLIB, ranlib, :)
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AC_CHECK_TOOL(STRIP, strip, :)
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AC_CHECK_TOOL(AR, ar, :)
AC_CHECK_TOOL(LD, ld, :)
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AC_CHECK_TOOL(UPX, upx, "")
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dnl Sam, if you think I didn't see that... --Meuuh
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dnl AM_PROG_LIBTOOL
AC_PROG_INSTALL

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dnl Check for compiler properties
AC_C_CONST
AC_C_INLINE

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dnl
dnl  Check for the contrib directory
dnl
topdir="`pwd`"
if test -d ${topdir}/extras/contrib/lib; then
  export PATH=${topdir}/extras/contrib/bin:$PATH
  export LD_LIBRARY_PATH=${topdir}/extras/contrib/lib:$LD_LIBRARY_PATH
  export DYLD_LIBRARY_PATH=${topdir}/extras/contrib/lib:$DYLD_LIBRARY_PATH
  CPPFLAGS="${CPPFLAGS} -I${topdir}/extras/contrib/include"
  CPPFLAGS_save="${CPPFLAGS_save} -I${topdir}/extras/contrib/include"
  CFLAGS="${CFLAGS} -I${topdir}/extras/contrib/include"
  CFLAGS_save="${CFLAGS_save} -I${topdir}/extras/contrib/include"
  CXXFLAGS="${CXXFLAGS} -I${topdir}/extras/contrib/include"
  CXXFLAGS_save="${CXXFLAGS_save} -I${topdir}/extras/contrib/include"
  OBJCFLAGS="${OBJCFLAGS} -I${topdir}/extras/contrib/include"
  OBJCFLAGS_save="${OBJCFLAGS_save} -I${topdir}/extras/contrib/include"
  if test -d ${topdir}/extras/contrib/vlc-lib; then
    LDFLAGS="${LDFLAGS} -L${topdir}/extras/contrib/vlc-lib"
    LDFLAGS_save="${LDFLAGS_save} -L${topdir}/extras/contrib/vlc-lib"
  fi
  LDFLAGS="${LDFLAGS} -L${topdir}/extras/contrib/lib"
  LDFLAGS_save="${LDFLAGS_save} -L${topdir}/extras/contrib/lib"
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  with_livedotcom_tree=${topdir}/extras/contrib/src/live
  with_goom_tree=${topdir}/extras/contrib/src/goom
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fi

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dnl
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dnl  Set default values
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dnl
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LDFLAGS_vlc="${LDFLAGS}"
LIBEXT=".so"
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dnl
dnl  Check the operating system
dnl
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case "${target_os}" in
  "")
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    SYS=unknown
    ;;
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  linux*)
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    SYS=linux
    ;;
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  bsdi*)
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    SYS=bsdi
    CFLAGS_save="${CFLAGS_save} -pthread"; CFLAGS="${CFLAGS_save}"
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    AX_ADD_LDFLAGS([dvd dvdcss vcd cdda vcdx cddax],[-ldvd])
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    ;;
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  *bsd*)
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    SYS="${target_os}"
    CFLAGS_save="${CFLAGS_save} -pthread"; CFLAGS="${CFLAGS_save}"
    ;;
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  darwin*)
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    SYS=darwin
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    CFLAGS_save="${CFLAGS_save} -no-cpp-precomp -D_INTL_REDIRECT_MACROS"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="${CXXFLAGS_save} -no-cpp-precomp -D_INTL_REDIRECT_MACROS"; CXXFLAGS="${CXXFLAGS_save}"
    OBJCFLAGS_save="${OBJCFLAGS_save} -no-cpp-precomp -D_INTL_REDIRECT_MACROS"; OBJCFLAGS="${OBJCFLAGS_save}"
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    AX_ADD_LDFLAGS([vlc ffmpeg],[-all_load])
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    AX_ADD_LDFLAGS([mp4], [-framework IOKit -framework CoreFoundation])
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    AX_ADD_LDFLAGS([vlc],[-Wl,-multiply_defined,suppress])
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    LIBEXT=".dylib"
    ;;
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  *mingw32* | *cygwin*)
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    AC_CHECK_TOOL(WINDRES, windres, :)
    LIBEXT=".dll"
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    case "${target_os}" in
      *mingw32*)
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        SYS=mingw32
        ;;
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      *cygwin*)
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        dnl Check if we are using the mno-cygwin mode in which case we are
        dnl actually dealing with a mingw32 compiler.
        AC_EGREP_CPP(yes,
            [#ifdef WIN32
             yes
             #endif],
            SYS=mingw32, SYS=cygwin)
        ;;
    esac

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    if test "${SYS}" = "mingw32"; then
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        # add ws2_32 for closesocket, select, recv
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        CPPFLAGS_save="${CPPFLAGS_save} -D_OFF_T_ -D_off_t=long"; CPPFLAGS="${CPPFLAGS_save}"
        AX_ADD_LDFLAGS([vlc],[-lws2_32 -lnetapi32 -lwinmm -mwindows])
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        AX_ADD_LDFLAGS([vcdx cddax],[-lwinmm])
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        AX_ADD_LDFLAGS([ipv4 ipv6 access_http access_mms access_udp access_tcp access_ftp access_output_udp sap slp http stream_out_standard telnet netsync],[-lws2_32])
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    fi
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    ;;
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  *nto*)
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    SYS=nto
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    AX_ADD_LDFLAGS([x11 xvideo],[-lsocket])
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    ;;
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  solaris*)
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    SYS=solaris
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    # _POSIX_PTHREAD_SEMANTICS is needed to get the POSIX ctime_r
    # Perhaps it is useful other places as well? 
    CFLAGS_save="${CFLAGS_save} -D_POSIX_PTHREAD_SEMANTICS"; CFLAGS="${CFLAGS_save}"
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    ;;
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  hpux*)
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    SYS=hpux
    LIBEXT=".sl"
    ;;
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  beos)
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    SYS=beos
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    CFLAGS_save="${CFLAGS_save} -Wno-multichar"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="${CXXFLAGS_save} -Wno-multichar"; CXXFLAGS="${CXXFLAGS_save}"
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    AX_ADD_CXXFLAGS([beos],[])
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    AX_ADD_LDFLAGS([vlc beos],[-lbe])
    AX_ADD_LDFLAGS([beos],[-lmedia -ltranslation -ltracker -lgame])
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    dnl Ugly check for Zeta
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    if test -f /boot/beos/system/lib/libzeta.so; then
        AX_ADD_LDFLAGS([beos],[-lzeta])
    fi
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    ;;
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  *)
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    SYS="${target_os}"
    ;;
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esac
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AM_CONDITIONAL(HAVE_BEOS, test "${SYS}" = "beos")
AM_CONDITIONAL(HAVE_DARWIN, test "${SYS}" = "darwin")
AM_CONDITIONAL(HAVE_WIN32, test "${SYS}" = "mingw32")
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dnl
dnl Gettext stuff
dnl
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ALL_LINGUAS="de en_GB es fr hu it ja nl no pl pt_BR ru sv"
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AM_GNU_GETTEXT_VERSION(0.11.5)
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AM_GNU_GETTEXT
if test "${nls_cv_force_use_gnu_gettext}" = "yes"; then
  AC_DEFINE(HAVE_INCLUDED_GETTEXT, 1, Define if we use the local libintl)
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  INCLUDES="${INCLUDES} -I\$(top_builddir)/intl"
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else
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  AC_CHECK_FUNCS(textdomain,,[
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    AC_CHECK_LIB(intl,textdomain,
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      AX_ADD_LDFLAGS([vlc],[${LIBINTL}]),,
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      ${LIBINTL}
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    )
  ])
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fi
AM_CONDITIONAL(BUILD_INTL, test "${nls_cv_force_use_gnu_gettext}" = "yes")
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XGETTEXT="${XGETTEXT} --keyword=_NS --keyword=_ANS"
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AC_ARG_ENABLE(utf8,
  [  --enable-utf8           unicode utf8 support (default enabled on darwin/beos/win32)])
if test "${enable_utf8}" = "yes" || (test "${enable_utf8}" != "no" && (test "${SYS}" = "mingw32" || test "${SYS}" = "beos" || test "${SYS}" = "darwin" ) )
then
  AC_DEFINE(ENABLE_UTF8, 1,
            Define if you want utf8 support)
fi

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AC_MSG_CHECKING(for suffix of libraries)
AC_MSG_RESULT(${LIBEXT})
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dnl Check for the need to include the mingwex lib for mingw32
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if test "${SYS}" = "mingw32"
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then
    AC_CHECK_LIB(mingwex,opendir,
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        AC_CHECK_LIB(mingw32,opendir,AX_ADD_LDFLAGS([vlc],[]),
            [AX_ADD_LDFLAGS([vlc gtk],[-lmingwex])])
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    )
fi

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dnl Check for fnative-struct or mms-bitfields support for mingw32
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if test "${SYS}" = "mingw32"
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then
    AC_CACHE_CHECK([if \$CC accepts -mms-bitfields],
        [ac_cv_c_mms_bitfields],
        [CFLAGS="${CFLAGS_save} -mms-bitfields"
         AC_TRY_COMPILE([],,ac_cv_c_mms_bitfields=yes, ac_cv_c_mms_bitfields=no)])
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    if test "${ac_cv_c_mms_bitfields}" != "no"; then
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        CFLAGS_save="${CFLAGS_save} -mms-bitfields";
        CXXFLAGS_save="${CXXFLAGS_save} -mms-bitfields";
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    else
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        AC_CACHE_CHECK([if \$CC accepts -fnative-struct],
            [ac_cv_c_fnative_struct],
            [CFLAGS="${CFLAGS_save} -fnative-struct"
             AC_TRY_COMPILE([],,ac_cv_c_fnative_struct=yes, ac_cv_c_fnative_struct=no)])
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        if test "${ac_cv_c_fnative_struct}" != "no"; then
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            CFLAGS_save="${CFLAGS_save} -fnative-struct";
            CXXFLAGS_save="${CXXFLAGS_save} -fnative-struct";
        fi
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    fi

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    CFLAGS="${CFLAGS_save}"; CXXFLAGS="${CXXFLAGS_save}"
fi

dnl Check for fvtable-thunks support for mingw32
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if test "${SYS}" = "mingw32"
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then
AC_LANG_PUSH(C++)
    AC_CACHE_CHECK([if \$CXX accepts -fvtable-thunks],
        [ac_cv_cxx_fvtable_thunks],
        [CXXFLAGS="${CXXFLAGS_save} -Wall -Werror -fvtable-thunks"
         AC_TRY_COMPILE([],,ac_cv_cxx_fvtable_thunks=yes,
                        ac_cv_cxx_fvtable_thunks=no)])
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    if test "${ac_cv_cxx_fvtable_thunks}" = "yes"; then
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        CXXFLAGS_mingw32_special="-fvtable-thunks"
    fi

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    CXXFLAGS_save="${CXXFLAGS_save} ${CXXFLAGS_mingw32_special}"; CXXFLAGS="${CXXFLAGS_save}"
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AC_LANG_POP(C++)
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fi

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dnl Flags for plugin compilation
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case "${SYS}" in
  mingw32|cygwin)
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    AX_ADD_CFLAGS([pic plugin mozilla],[${CFLAGS_mingw32_special}])
    AX_ADD_CXXFLAGS([pic plugin mozilla],[${CFLAGS_mingw32_special} ${CXXFLAGS_mingw32_special}])
    AX_ADD_OBJCFLAGS([pic plugin mozilla],[${CFLAGS_mingw32_special}])
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    ;;
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  *)
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    AX_ADD_CFLAGS([pic plugin mozilla],[-fpic -fPIC])
    AX_ADD_CXXFLAGS([pic plugin mozilla],[-fpic -fPIC])
    AX_ADD_OBJCFLAGS([pic plugin mozilla],[-fpic -fPIC])
    AX_ADD_LDFLAGS([plugin mozilla],[-fpic -fPIC])
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    ;;
esac
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dnl The -DSYS_FOO flag
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CPPFLAGS_save="${CPPFLAGS_save} -DSYS_`echo ${SYS} | sed -e 's/-.*//' | tr 'abcdefghijklmnopqrstuvwxyz.' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`"; CPPFLAGS="${CPPFLAGS_save}"
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dnl Check for system libs needed
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need_libc=false
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AC_CHECK_FUNCS(gettimeofday select strerror strtod strtol isatty vasprintf asprintf swab sigrelse getpwuid memalign posix_memalign gethostbyname2 if_nametoindex atoll getenv putenv setenv gmtime_r ctime_r localtime_r lrintf)
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dnl Check for usual libc functions
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AC_CHECK_FUNCS(strdup strndup atof lseek)
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AC_CHECK_FUNCS(strcasecmp,,[AC_CHECK_FUNCS(stricmp)])
AC_CHECK_FUNCS(strncasecmp,,[AC_CHECK_FUNCS(strnicmp)])
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dnl Check for setlocal and langinfo
AC_CHECK_FUNCS(setlocale)
AC_CHECK_HEADERS(langinfo.h)
AC_CHECK_FUNCS(nl_langinfo)

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

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AC_CHECK_FUNCS(connect,,[
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  AC_CHECK_LIB(socket,connect,[
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    AX_ADD_LDFLAGS([vlc ipv4 cddax],-lsocket)
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  ])
])
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AC_CHECK_FUNCS(send,,[
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  AC_CHECK_LIB(socket,send,[
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    AX_ADD_LDFLAGS([access_http access_mms access_udp access_tcp access_ftp sap access_output_udp stream_out_standard],[-lsocket])
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  ])
])
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AC_CHECK_FUNCS(gethostbyname,,[
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  AC_CHECK_LIB(nsl,gethostbyname,[
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    AX_ADD_LDFLAGS([cddax ipv4 vlc],[-lnsl])
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  ],[
    AC_CHECK_LIB(bind,gethostbyname,[
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      AX_ADD_LDFLAGS([ipv4 access_mms],[-lbind])
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    ])
  ])
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])
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dnl Check for socklen_t
AC_CACHE_CHECK([for socklen_t], ac_cv_type_socklen_t,
  [AC_TRY_COMPILE(
     [#include <sys/types.h>
      #include <sys/socket.h>],
     [socklen_t len = 42; return len;],
     ac_cv_type_socklen_t=yes,
     ac_cv_type_socklen_t=no)])
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if test "${ac_cv_type_socklen_t}" != "no"; then
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  AC_DEFINE(HAVE_SOCKLEN_T, 1, [Define if <sys/socket.h> defines socklen_t.])
fi

dnl Check for va_copy
AC_CACHE_CHECK([for va_copy], ac_cv_c_va_copy,
  AC_TRY_LINK(
    [#include <stdarg.h>],
    [va_list ap1, ap2; va_copy(ap1,ap2);],
    [ac_cv_c_va_copy="yes"],
    [ac_cv_c_va_copy="no"]))
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if test "${ac_cv_c_va_copy}" = "yes"; then
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  AC_DEFINE(HAVE_VA_COPY, 1, [Define if <stdarg.h> defines va_copy.])
fi
AC_CACHE_CHECK([for __va_copy], ac_cv_c___va_copy,
  AC_TRY_LINK(
    [#include <stdarg.h>],
    [va_list ap1, ap2; __va_copy(ap1,ap2);],
    [ac_cv_c___va_copy="yes"],
    [ac_cv_c___va_copy="no"]))
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if test "${ac_cv_c___va_copy}" = "yes"; then
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  AC_DEFINE(HAVE___VA_COPY, 1, [Define if <stdarg.h> defines __va_copy.])
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fi

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AC_CHECK_FUNCS(inet_aton,,[
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  AC_CHECK_LIB(resolv,inet_aton,[
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    AX_ADD_LDFLAGS([ipv4 vlc],[-lresolv])
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  ])
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])
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dnl Check for getopt (always use builtin one on win32)
if test "${SYS}" = "mingw32"; then
need_getopt=:
else
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need_getopt=false
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AC_CHECK_FUNCS(getopt_long,[AC_DEFINE(HAVE_GETOPT_LONG,1,long getopt support)],
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[ # FreeBSD has a gnugetopt library for this:
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  AC_CHECK_LIB([gnugetopt],[getopt_long],
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    [AC_DEFINE(HAVE_GETOPT_LONG,1,getopt support)
     AX_ADD_LDFLAGS([vlc],[-lgnugetopt])],
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    [need_getopt=:])])
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fi
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AM_CONDITIONAL(BUILD_GETOPT, ${need_getopt})
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if test "${SYS}" != "mingw32"; then
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AC_TYPE_SIGNAL
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AC_CHECK_LIB(m,cos,[
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  AX_ADD_LDFLAGS([adjust distort a52tofloat32 dtstofloat32],[-lm])
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])
AC_CHECK_LIB(m,pow,[
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  AX_ADD_LDFLAGS([ffmpeg stream_out_transcode stream_out_transrate i420_rgb faad vlc],[-lm])
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])
AC_CHECK_LIB(m,sqrt,[
  AX_ADD_LDFLAGS([headphone_channel_mixer],[-lm])
])
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fi # end "${SYS}" != "mingw32"
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dnl Check for dynamic plugins
ac_cv_have_plugins=no

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

# HP-UX style
if test "${ac_cv_have_plugins}" = "no"; then
  AC_CHECK_HEADERS(dl.h)
  ac_cv_my_have_shl_load=no
  AC_CHECK_FUNC(shl_load,
   [ac_cv_my_have_shl_load=yes,
    AC_CHECK_LIB(dld, shl_load,
     [ac_cv_my_have_shl_load=yes
      AX_ADD_LDFLAGS([vlc],[-ldld])])])
  if test "${ac_cv_my_have_shl_load}" = "yes"; then
    AC_DEFINE(HAVE_DL_SHL_LOAD, 1, [Define if you have the shl_load API])
    ac_cv_have_plugins=yes
  fi
fi

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

# Win32 style
if test "${ac_cv_have_plugins}" = "no"; then
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  if test "${SYS}" = "mingw32" -o "${SYS}" = "cygwin"; then
    AC_CHECK_LIB(kernel32, main,
     [AX_ADD_LDFLAGS([vlc],[-lkernel32])
      AC_DEFINE(HAVE_DL_WINDOWS, 1, [Define if you have Windows' LoadLibrary])
      ac_cv_have_plugins=yes])
  fi
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fi

# BeOS style
if test "${ac_cv_have_plugins}" = "no"; then
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  AC_CHECK_HEADERS(image.h)
  AC_CHECK_FUNCS(load_add_on,
   [AC_DEFINE(HAVE_DL_BEOS, 1, [Define if you have the BeOS dl])
    ac_cv_have_plugins=yes])
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fi

# Only test for dlopen() if the others didn't work
if test "${ac_cv_have_plugins}" = "no"; then
  AC_CHECK_HEADERS(dlfcn.h sys/dl.h)
  ac_cv_my_have_dlopen=no
  AC_CHECK_FUNC(dlopen,
    ac_cv_my_have_dlopen=yes,
    AC_CHECK_LIB(dl, dlopen,
      ac_cv_my_have_dlopen=yes
      AX_ADD_LDFLAGS([vlc],[-ldl]),
      AC_CHECK_LIB(svld, dlopen,
        ac_cv_my_have_dlopen=yes
        AX_ADD_LDFLAGS([vlc],[-lsvld]))))
  if test "${ac_cv_my_have_dlopen}" = "yes"; then
    AC_DEFINE(HAVE_DL_DLOPEN, 1, [Define if you have the dlopen API])
    ac_cv_have_plugins=yes
  fi
fi

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if test "${SYS}" != "mingw32"; then
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dnl Check for pthreads - borrowed from XMMS
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THREAD_LIB=error
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if test "${THREAD_LIB}" = "error"; then
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  AC_CHECK_LIB(pthread,main,THREAD_LIB="-lpthread")
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fi
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if test "${THREAD_LIB}" = "error"; then
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  AC_CHECK_LIB(pthreads,main,THREAD_LIB="-lpthreads")
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fi
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if test "${THREAD_LIB}" = "error"; then
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  AC_CHECK_LIB(c_r,main,THREAD_LIB="-lc_r")
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fi
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if test "${THREAD_LIB}" = "error"; then
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  AC_CHECK_FUNCS(pthread_mutex_lock)
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  THREAD_LIB=""
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fi
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dnl Check for cthreads under GNU/Hurd for instance
AC_CHECK_LIB(threads,cthread_fork,THREAD_LIB="-lthreads")
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dnl
dnl  GNU portable threads
dnl
AC_ARG_ENABLE(pth,
  [  --enable-pth            GNU Pth support (default disabled)],
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  [ if test "${enable_pth}" = "yes"; then
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    AC_CHECK_LIB(pth,pth_init)
    AC_MSG_CHECKING(for pth_init in pth.h)
    AC_EGREP_HEADER(pth_init,pth.h,[
      AC_MSG_RESULT(yes)
      AC_DEFINE(PTH_INIT_IN_PTH_H, 1,
                Define if <pth.h> defines pth_init)
      THREAD_LIB="-lpth"
    ],[
      AC_MSG_RESULT(no)
    ])
    fi
])

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

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AX_ADD_LDFLAGS([vlc plugin],[${THREAD_LIB}])
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dnl Don't link with rt when using GNU-pth
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if test "${THREAD_LIB}" != "-lpth" && test "${THREAD_LIB}" != "-lst"; then
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  dnl HP/UX port
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  AC_CHECK_LIB(rt,sem_init, [AX_ADD_LDFLAGS([vlc],[-lrt])])
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  have_nanosleep=false
  AC_CHECK_FUNCS(nanosleep,have_nanosleep=:,[
    AC_CHECK_LIB(rt,nanosleep,
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      [AX_ADD_LDFLAGS([vlc],[-lrt]) have_nanosleep=:],
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      [AC_CHECK_LIB(posix4,nanosleep,
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          [AX_ADD_LDFLAGS([vlc],[-lposix4]) have_nanosleep=:])]
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    )
  ])
  if ${have_nanosleep}; then
    AC_DEFINE(HAVE_NANOSLEEP, 1,
              Define if nanosleep is available.)
  fi
fi

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

AC_MSG_CHECKING(for pthread_once in pthread.h)
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AC_EGREP_HEADER(pthread_once,pthread.h,[
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  AC_MSG_RESULT(yes)
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  AC_DEFINE(PTHREAD_ONCE_IN_PTHREAD_H, 1,
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            Define if <pthread.h> defines pthread_once.)],[
  AC_MSG_RESULT(no)])
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fi # end "${SYS}" != "mingw32"
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AC_MSG_CHECKING(for strncasecmp in strings.h)
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AC_EGREP_HEADER(strncasecmp,strings.h,[
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  AC_MSG_RESULT(yes)
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  AC_DEFINE(STRNCASECMP_IN_STRINGS_H, 1,
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            Define if <strings.h> defines strncasecmp.)],[
  AC_MSG_RESULT(no)])
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dnl Check for headers
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AC_CHECK_HEADERS(signal.h time.h errno.h stdint.h stdbool.h getopt.h strings.h inttypes.h sys/int_types.h wchar.h)
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AC_CHECK_HEADERS(sys/sockio.h fcntl.h sys/types.h sys/time.h sys/times.h sys/ioctl.h sys/stat.h)
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AC_CHECK_HEADERS(arpa/inet.h net/if.h netinet/in.h sys/socket.h)
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if test "${SYS}" != "mingw32"; then
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AC_CHECK_HEADERS(machine/param.h sys/shm.h altivec.h)
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AC_CHECK_HEADERS(linux/version.h)
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fi # end "${SYS}" != "mingw32"
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AC_HEADER_TIME

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

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dnl Mac OS X and other OSes don't have declaration for nanosleep
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if test "${SYS}" != "mingw32"; then
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AC_MSG_CHECKING(for nanosleep in time.h)
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AC_EGREP_HEADER(nanosleep,time.h,[
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  AC_MSG_RESULT(yes)
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  AC_DEFINE(HAVE_DECL_NANOSLEEP, 1,
            Define if <time.h> defines nanosleep.)
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],[
  AC_MSG_RESULT(no)
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])
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fi # end "${SYS}" != "mingw32"
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dnl Make sure we have timespecs
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AC_MSG_CHECKING(for timespec in sys/time.h)
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AC_EGREP_HEADER(timespec,sys/time.h,[
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  AC_MSG_RESULT(yes)
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  AC_DEFINE(HAVE_STRUCT_TIMESPEC, 1,
            Define if <sys/time.h> defines struct timespec.)
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],[
  AC_MSG_RESULT(no)
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])
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dnl Check for threads library
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if test "${SYS}" != "mingw32"; then
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AC_CHECK_HEADERS(cthreads.h pthread.h kernel/scheduler.h kernel/OS.h)
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fi # end "${SYS}" != "mingw32"
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dnl Default X headers and libraries
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if test "${x_includes}" = "NONE"; then
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  x_includes="/usr/X11R6/include"
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fi
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if test "${x_libraries}" = "NONE"; then
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  x_libraries="/usr/X11R6/lib"
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fi

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dnl Build the gtk_main plugins?
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NEED_GTK_MAIN=no
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NEED_GNOME_MAIN=no
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NEED_GTK2_MAIN=no
NEED_GNOME2_MAIN=no
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dnl build the qte plugin ?
NEED_QTE_MAIN=no

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dnl Check for ntohl, etc.
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AC_CACHE_CHECK([for ntohl in sys/param.h],
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    [ac_cv_c_ntohl_sys_param_h],
    [CFLAGS="${CFLAGS_save} -Wall -Werror"
     AC_TRY_COMPILE([#include <sys/param.h>],
        [void foo() { int meuh; ntohl(meuh); }],
        ac_cv_c_ntohl_sys_param_h=yes, ac_cv_c_ntohl_sys_param_h=no)])
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if test "${ac_cv_c_ntohl_sys_param_h}" != "no"; then
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    AC_DEFINE(NTOHL_IN_SYS_PARAM_H, 1, Define if <sys/param.h> defines ntohl.)
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fi
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dnl Check for inline function size limit
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AC_CACHE_CHECK([if \$CC accepts -finline-limit],
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    [ac_cv_c_inline_limit],
    [CFLAGS="${CFLAGS_save} -finline-limit-30000"
     AC_TRY_COMPILE([],,ac_cv_c_inline_limit=yes, ac_cv_c_inline_limit=no)])
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if test "${ac_cv_c_inline_limit}" != "no"; then
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    CFLAGS_save="${CFLAGS_save} -finline-limit-30000"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="${CXXFLAGS_save} -finline-limit-30000"; CXXFLAGS="${CXXFLAGS_save}"
    OBJCFLAGS_save="${OBJCFLAGS_save} -finline-limit-30000"; OBJCFLAGS="${OBJCFLAGS_save}"
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fi
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# XXX: do this with an M4 macro?
#dnl Check for various -W flags
#for flag in "" all unreachable-code conversion sign-compare disabled-optimization
#do
#    AC_CACHE_CHECK([if \$CC accepts -W${flag}],
#        [ac_cv_c_W${flag}],
#        [CFLAGS="-W${flag} ${CFLAGS_save}"
#         AC_TRY_COMPILE([],,ac_cv_c_W${flag}=yes, ac_cv_c_W${flag}=no)])
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#    if test "${ac_cv_c_W${flag}}" != "no"; then
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#        CFLAGS_save="-W${flag} ${CFLAGS_save}"; CFLAGS="${CFLAGS_save}"
#        CXXFLAGS_save="-W${flag} ${CFLAGS_save}"; CXXFLAGS="${CXXFLAGS_save}"
#        OBJCFLAGS_save="-W${flag} ${OBJCFLAGS_save}"; OBJCFLAGS="${OBJCFLAGS_save}"
#    fi
#done

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

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

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

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

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

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

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

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AC_CACHE_CHECK([if \$CC accepts -O3],
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    [ac_cv_c_o3],
    [CFLAGS="${CFLAGS_save} -O3"
     AC_TRY_COMPILE([],,ac_cv_c_o3=yes, ac_cv_c_o3=no)])
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    CFLAGS_OPTIM="${CFLAGS_OPTIM} -O3"
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fi

AC_CACHE_CHECK([if \$CC accepts -O2],
    [ac_cv_c_o2],
    [CFLAGS="${CFLAGS_save} -O2"
     AC_TRY_COMPILE([],,ac_cv_c_o2=yes, ac_cv_c_o2=no)])
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if test "${ac_cv_c_o2}" != "no" -a "${target_cpu}" != "mipsel"; then
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    if test "${ac_cv_c_o3}" = "no"; then
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        CFLAGS_OPTIM="${CFLAGS_OPTIM} -O2"
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    fi
    CFLAGS_NOOPTIM="${CFLAGS_NOOPTIM} -O2"
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else 
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    AC_CACHE_CHECK([if \$CC accepts -O],
        [ac_cv_c_o],
        [CFLAGS="${CFLAGS_save} -O"
         AC_TRY_COMPILE([],,ac_cv_c_o=yes, ac_cv_c_o=no)])
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    if test "${ac_cv_c_o}" != "no" -a "${target_cpu}" != "mipsel"; then
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        if test "${ac_cv_c_o3}" = "no"; then
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            CFLAGS_OPTIM="${CFLAGS_OPTIM} -O"
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	fi
        CFLAGS_NOOPTIM="${CFLAGS_NOOPTIM} -O"
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    fi
fi

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

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

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

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dnl Check for -mdynamic-no-pic
AC_CACHE_CHECK([if \$CC accepts -mdynamic-no-pic],
    [ac_cv_c_dynamic_no_pic],
    [CFLAGS="${CFLAGS_save} -mdynamic-no-pic"
     AC_TRY_COMPILE([],,ac_cv_c_dynamic_no_pic=yes, ac_cv_c_dynamic_no_pic=no)])
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if test "${ac_cv_c_dynamic_no_pic}" != "no"; then
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    AX_ADD_CFLAGS([builtin],[-mdynamic-no-pic])
    AX_ADD_CFLAGS([libvlc],[-mdynamic-no-pic])
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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 -lcc_dynamic],
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    [ac_cv_ld_darwin],
    [CFLAGS="${CFLAGS_save} -bundle -undefined error -lcc_dynamic"
     AC_TRY_COMPILE([],,ac_cv_ld_darwin=yes, ac_cv_ld_darwin=no)])
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if test "${ac_cv_ld_darwin}" != "no"; then
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    AX_ADD_LDFLAGS([plugin],[-bundle -undefined error -lcc_dynamic])
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fi
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dnl Check for standard plugin linking flags
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dnl BeOS' gcc needs -nostart instead of -shared, even if -shared isn't harmful (just a warning)
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if test "${SYS}" = "beos"; then
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  AX_ADD_LDFLAGS([plugin mozilla],[-nostart])
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else
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  AC_CACHE_CHECK([if \$CC accepts -shared],
      [ac_cv_ld_plugins],
      [CFLAGS="${CFLAGS_save} -shared"
       AC_TRY_COMPILE([],, ac_cv_ld_plugins=yes, ac_cv_ld_plugins=no)])
  if test "${ac_cv_ld_plugins}" != "no"; then
    AX_ADD_LDFLAGS([plugin mozilla],[-shared])
  fi
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fi
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dnl Check for variadic macros
AC_CACHE_CHECK([for variadic cpp macros],
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    [ac_cv_cpp_variadic_macros],
    [CFLAGS="${CFLAGS_save}"
     AC_TRY_COMPILE(
         [#include <stdio.h>
          #define a(b,c...) printf(b,##c)],
         [a("foo");a("%s","bar");a("%s%s","baz","quux");],
         ac_cv_cpp_variadic_macros=yes,
         ac_cv_cpp_variadic_macros=no)])
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if test "${ac_cv_cpp_variadic_macros}" != "no"; then
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    AC_DEFINE(HAVE_VARIADIC_MACROS, 1, Support for variadic macros)
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fi

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

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

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

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

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dnl
dnl  Enable profiling
dnl
AC_ARG_ENABLE(gprof,
[  --enable-gprof          gprof profiling (default disabled)])
AC_ARG_ENABLE(cprof,
[  --enable-cprof          cprof profiling (default disabled)])
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test "${enable_gprof}" != "yes" && enable_gprof="no"
test "${enable_cprof}" != "yes" && enable_cprof="no"
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dnl
dnl  default modules
dnl
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AX_ADD_PLUGINS([dummy rc telnet logger gestures memcpy hotkeys netsync])
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AX_ADD_PLUGINS([mpgv mpga m4v h264 mpeg_system ps ps2 pva ts_old avi asf aac mp4 rawdv demux2 nsv real aiff mjpeg])
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AX_ADD_PLUGINS([cvdsub svcdsub spudec dvbsub mpeg_audio lpcm a52 dts cinepak])
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AX_ADD_PLUGINS([deinterlace invert adjust wall transform distort clone crop motionblur])
AX_ADD_PLUGINS([float32tos16 float32tos8 float32tou16 float32tou8 a52tospdif dtstospdif fixed32tofloat32 fixed32tos16 s16tofixed32 s16tofloat32 s16tofloat32swab s8tofloat32 u8tofixed32 u8tofloat32])
AX_ADD_PLUGINS([trivial_resampler ugly_resampler linear_resampler bandlimited_resampler])
AX_ADD_PLUGINS([trivial_channel_mixer headphone_channel_mixer])
AX_ADD_PLUGINS([trivial_mixer spdif_mixer float32_mixer])
AX_ADD_PLUGINS([aout_file])
AX_ADD_PLUGINS([i420_rgb i420_yuy2 i422_yuy2 i420_ymga])
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AX_ADD_PLUGINS([id3 m3u playlist export sgimb])
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AX_ADD_PLUGINS([rawvideo])
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AX_ADD_PLUGINS([wav araw demuxdump demuxsub adpcm a52sys dtssys au])
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AX_ADD_PLUGINS([access_file access_udp access_tcp access_http ipv4 access_mms access2])
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AX_ADD_PLUGINS([access_ftp access_directory sap http])
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dnl
dnl  Switch to enable a version of VLC where most modules will be builtin
dnl
AC_ARG_ENABLE(mostly-builtin,
[  --enable-mostly-builtin most modules will be built-in (default disabled)])
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if test "${enable_mostly_builtin}" = "yes"; then
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  AX_ADD_BUILTINS([${PLUGINS}])
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  PLUGINS=""
fi

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dnl
dnl Some plugins aren't useful on some platforms
dnl
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if test "${SYS}" != "mingw32"; then
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    AX_ADD_PLUGINS([screensaver])
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else
    AX_ADD_PLUGINS([ntservice])
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fi
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dnl
dnl  Accelerated modules
dnl
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MMX_MODULES="memcpymmx i420_rgb_mmx i422_yuy2_mmx i420_ymga_mmx"
#MMX_MODULES="${MMX_MODULES} idctmmx motionmmx"
MMXEXT_MODULES="memcpymmxext"
#MMXEXT_MODULES="${MMXEXT_MODULES} idctmmxext motionmmxext"
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THREEDNOW_MODULES="memcpy3dn"
SSE_MODULES=""
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ALTIVEC_MODULES="memcpyaltivec i420_yuy2_altivec"
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#ALTIVEC_MODULES="${ALTIVEC_MODULES} idctaltivec motionaltivec"
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if test "${enable_gprof}" != "yes"
then
  MMX_MODULES="${MMX_MODULES} i420_yuy2_mmx"
fi

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AC_CACHE_CHECK([if \$CC groks MMX inline assembly],
    [ac_cv_mmx_inline],
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    [CFLAGS="${CFLAGS_save}"
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     AC_TRY_COMPILE(,[void *p;asm volatile("packuswb %%mm1,%%mm2"::"r"(p));],
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                    ac_cv_mmx_inline=yes, ac_cv_mmx_inline=no)])
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if test "${ac_cv_mmx_inline}" != "no"; then
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  AC_DEFINE(CAN_COMPILE_MMX, 1, Define if \$CC groks MMX inline assembly.)
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  ACCEL_MODULES="${ACCEL_MODULES} ${MMX_MODULES}"
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fi
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AC_CACHE_CHECK([if \$CC groks MMX EXT inline assembly],
    [ac_cv_mmxext_inline],
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    [CFLAGS="${CFLAGS_save}"
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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 "${ac_cv_mmxext_inline}" != "no"; then
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  AC_DEFINE(CAN_COMPILE_MMXEXT, 1, Define if \$CC groks MMX EXT inline assembly.)
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  ACCEL_MODULES="${ACCEL_MODULES} ${MMXEXT_MODULES}"
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fi
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AC_CACHE_CHECK([if \$CC groks 3D Now! inline assembly],
    [ac_cv_3dnow_inline],
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    [CFLAGS="${CFLAGS_save}"
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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 "${ac_cv_3dnow_inline}" != "no"; then
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  AC_DEFINE(CAN_COMPILE_3DNOW, 1, Define if \$CC groks 3D Now! inline assembly.)
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  ACCEL_MODULES="${ACCEL_MODULES} ${THREEDNOW_MODULES}"
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fi
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AC_CACHE_CHECK([if \$CC groks SSE inline assembly],
    [ac_cv_sse_inline],
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    [CFLAGS="${CFLAGS_save}"
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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 "${ac_cv_sse_inline}" != "no" -a "${SYS}" != "mingw32" -a "${SYS}" != "solaris"; then
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  AC_DEFINE(CAN_COMPILE_SSE, 1, Define if \$CC groks SSE inline assembly.)
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  ACCEL_MODULES="${ACCEL_MODULES} ${SSE_MODULES}"
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fi
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if test "${SYS}" != "mingw32"; then
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AC_CACHE_CHECK([if \$CC groks AltiVec inline assembly],
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    [ac_cv_altivec_inline],
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    [CFLAGS="${CFLAGS_save}"
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     AC_TRY_COMPILE(,[asm volatile("vperm 0,1,2,3");],
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         ac_cv_altivec_inline=yes,
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         [CFLAGS="${CFLAGS_save} -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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         ])])
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if test "${ac_cv_altivec_inline}" != "no"; then
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  AC_DEFINE(CAN_COMPILE_ALTIVEC, 1, Define if \$CC groks AltiVec inline assembly.)
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  if test "${ac_cv_altivec_inline}" != "yes"; then
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    AX_ADD_CFLAGS([idctaltivec],[${ac_cv_altivec_inline}])
    AX_ADD_CFLAGS([motionaltivec],[${ac_cv_altivec_inline}])
    AX_ADD_CFLAGS([memcpyaltivec],[${ac_cv_altivec_inline}])
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    AX_ADD_CFLAGS([i420_yuy2_altivec],[${ac_cv_altivec_inline}])
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    AX_ADD_CFLAGS([vlc],[${ac_cv_altivec_inline}])
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  fi
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  ACCEL_MODULES="${ACCEL_MODULES} ${ALTIVEC_MODULES}"
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fi
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AC_CACHE_CHECK([if \$CC groks AltiVec C extensions],
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    [ac_cv_c_altivec],
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    [# Darwin test
     CFLAGS="${CFLAGS_save} -faltivec"
     AC_TRY_COMPILE([],
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       [vec_ld(0, (unsigned char *)0);],
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       [ac_cv_c_altivec="-faltivec"],
       [# Linux/PPC test
        CFLAGS="${CFLAGS_save} ${CFLAGS_idctaltivec} -maltivec -mabi=altivec"
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        AC_TRY_COMPILE([#ifdef HAVE_ALTIVEC_H
                        #include <altivec.h>
                        #endif],
          [vec_ld(0, (unsigned char *)0);],
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          [ac_cv_c_altivec="-maltivec -mabi=altivec"],
          [# Linux/PPC test (old GCC versions)
           CFLAGS="${CFLAGS_save} ${CFLAGS_idctaltivec} -fvec"
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           AC_TRY_COMPILE([#ifdef HAVE_ALTIVEC_H
                           #include <altivec.h>
                           #endif],
             [vec_ld(0, (unsigned char *)0);],
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             [ac_cv_c_altivec="-fvec"],
             [ac_cv_c_altivec=no])
           ])
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        ])
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     CFLAGS="${CFLAGS_save}"])