configure.ac 139 KB
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dnl Autoconf settings for vlc
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AC_COPYRIGHT([Copyright 2002-2011 the VideoLAN team])
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AC_INIT(vlc, 1.2.0-git)
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VERSION_MAJOR=1
VERSION_MINOR=2
VERSION_REVISION=0
VERSION_EXTRA=0
VERSION_DEV=git

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PKGDIR="vlc"
AC_SUBST(PKGDIR)
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CONFIGURE_LINE="`echo "$0 $ac_configure_args" | sed -e 's/\\\/\\\\\\\/g'`"
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CODENAME="Twoflower"
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COPYRIGHT_YEARS="1996-2011"
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AC_CONFIG_SRCDIR(src/libvlc.c)
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AC_CONFIG_AUX_DIR(autotools)
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AC_CONFIG_MACRO_DIR(m4)
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AC_CONFIG_LIBOBJ_DIR(compat)
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AC_CANONICAL_BUILD
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AC_CANONICAL_HOST
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AC_PRESERVE_HELP_ORDER
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AM_INIT_AUTOMAKE(tar-ustar color-tests)
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AM_CONFIG_HEADER(config.h)

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# Disable with "./configure --disable-silent-rules" or "make V=1"
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AM_SILENT_RULES([yes])
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dnl Too many people are not aware of maintainer mode:
dnl If you want to use it, you definitely know what you are doing, so
dnl you can specify "--disable-maintainer-mode". But if you want the default
dnl automake behavior, you've likely never heard of maintainer mode, so we
dnl can't expect you to enable it manually.
AS_IF([test "x${enable_maintainer_mode}" != "xno"],
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    [enable_maintainer_mode="yes"])
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AM_MAINTAINER_MODE

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dnl
dnl Directories
dnl
dnl vlcincludedir="\${includedir}/\${PKGDIR}"
dnl AC_SUBST(vlcincludedir)
vlcdatadir="\${datadir}/\${PKGDIR}"
AC_SUBST(vlcdatadir)
vlclibdir="\${libdir}/\${PKGDIR}"
AC_SUBST(vlclibdir)

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dnl
dnl  Save *FLAGS
dnl
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VLC_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_C99
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AC_USE_SYSTEM_EXTENSIONS
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AC_DEFINE([_FORTIFY_SOURCE], 2, [Define to 2 to get glibc warnings.])
AC_DEFINE([_FILE_OFFSET_BITS], 64, [Define to 64 for large files support.])
AC_DEFINE([_REENTRANT],, [Define to expose reentrant functions.])
AC_DEFINE([_THREAD_SAFE],, [Same as _REENTANT for some other OSes.])
AC_DEFINE([__LIBVLC__],, [Define within the LibVLC source code tree.])
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AM_PROG_CC_C_O
AC_PROG_CXX
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AC_PROG_CPP
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AC_PROG_OBJC
_AM_DEPENDENCIES([OBJC])
AC_PROG_EGREP
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AC_PROG_MAKE_SET
AC_PROG_INSTALL
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AM_PROG_AS
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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(DLLTOOL, dlltool, :)
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dnl Check for compiler properties
AC_C_CONST
AC_C_INLINE
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AC_C_RESTRICT
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dnl Extend the --help string at the current spot.
AC_DEFUN([EXTEND_HELP_STRING], [m4_divert_once([HELP_ENABLE], [$1])])

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dnl Allow binary package maintainer to pass a custom string to avoid
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dnl cache problem
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AC_ARG_WITH(binary-version,
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    AS_HELP_STRING([--with-binary-version=STRING],
         [To avoid plugins cache problem between binary version]),[],[])
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AS_IF([test -n "${with_binary_version}"],[
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    AC_DEFINE_UNQUOTED([DISTRO_VERSION],["${with_binary_version}"],
         [Binary specific version])
])
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dnl
dnl  Check for the contrib directory
dnl
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AC_ARG_WITH(contrib,
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  [AS_HELP_STRING([--with-contrib[=DIR]],
    [search for 3rd party libraries in DIR/include and DIR/lib])
])
AC_MSG_CHECKING([for 3rd party libraries path])
AS_IF([test -z "${with_contrib}" || test "${with_contrib}" = "yes"], [
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  CONTRIB_DIR="${srcdir}/contrib/${host}"
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  AS_IF([test ! -d "${CONTRIB_DIR}"], [
    echo "${CONTRIB_DIR} not found" >&AS_MESSAGE_LOG_FD
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    CONTRIB_DIR="${srcdir}/contrib/`$CC -dumpmachine`"
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    AS_IF([test ! -d "${CONTRIB_DIR}"], [
      echo "${CONTRIB_DIR} not found" >&AS_MESSAGE_LOG_FD
      CONTRIB_DIR="${srcdir}/extras/contrib/hosts/${host}"
      AS_IF([test ! -d "${CONTRIB_DIR}"], [
        echo "${CONTRIB_DIR} not found" >&AS_MESSAGE_LOG_FD
        CONTRIB_DIR="${srcdir}/extras/contrib/hosts/`$CC -dumpmachine`"
        AS_IF([test ! -d "${CONTRIB_DIR}"], [
          echo "${CONTRIB_DIR} not found" >&AS_MESSAGE_LOG_FD
          CONTRIB_DIR=""
          AC_MSG_RESULT([not found])
        ])
      ])
    ])
  ])
], [
  AS_IF([test "${with_contrib}" != "no"], [
    CONTRIB_DIR="${with_contrib}"
  ], [
    CONTRIB_DIR=""
    AC_MSG_RESULT([disabled])
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  ])
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])
AS_IF([test -n "${CONTRIB_DIR}"], [
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  AS_IF([test -d "${CONTRIB_DIR}/lib"],[
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    CONTRIB_DIR=`cd "${CONTRIB_DIR}" && pwd`
  ], [
    echo "${CONTRIB_DIR}/lib not found" >&AS_MESSAGE_LOG_FD
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    CONTRIB_DIR=""
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    AC_MSG_RESULT([not usable])
  ])

])
AS_IF([test -n "${CONTRIB_DIR}"], [
  AC_MSG_RESULT([${CONTRIB_DIR}])
  export PATH=${CONTRIB_DIR}/bin:$PATH
  CPPFLAGS="${CPPFLAGS} -I${CONTRIB_DIR}/include"
  CPPFLAGS_save="${CPPFLAGS_save} -I${CONTRIB_DIR}/include"
  CFLAGS="${CFLAGS} -I${CONTRIB_DIR}/include"
  CFLAGS_save="${CFLAGS_save} -I${CONTRIB_DIR}/include"
  CXXFLAGS="${CXXFLAGS} -I${CONTRIB_DIR}/include"
  CXXFLAGS_save="${CXXFLAGS_save} -I${CONTRIB_DIR}/include"
  OBJCFLAGS="${OBJCFLAGS} -I${CONTRIB_DIR}/include"
  OBJCFLAGS_save="${OBJCFLAGS_save} -I${CONTRIB_DIR}/include"
  AS_IF([test "$build" = "$host" -o "$PKG_CONFIG_LIBDIR"], [
    export PKG_CONFIG_PATH="${CONTRIB_DIR}/lib/pkgconfig:$PKG_CONFIG_PATH"
  ], [
    export PKG_CONFIG_LIBDIR="${CONTRIB_DIR}/lib/pkgconfig"
  ])
  LDFLAGS="${LDFLAGS} -L${CONTRIB_DIR}/lib"
  LDFLAGS_save="${LDFLAGS_save} -L${CONTRIB_DIR}/lib"

  AS_IF([test "${SYS}" = "darwin"], [
    export LD_LIBRARY_PATH="${CONTRIB_DIR}/lib:$LD_LIBRARY_PATH"
    export DYLD_LIBRARY_PATH="${CONTRIB_DIR}/lib:$DYLD_LIBRARY_PATH"
  ])
], [
  AS_IF([test -n "${with_contrib}" && test "${with_contrib}" != "no"], [
    AC_MSG_ERROR([Third party libraries not found!])
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  ])
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])
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AC_SUBST(CONTRIB_DIR)
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dnl
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dnl  Set default values
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dnl
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LDFLAGS_vlc="${LDFLAGS}"
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SOCKET_LIBS=""
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dnl
dnl  Check the operating system
dnl
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HAVE_WIN64="0"
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case "${host_os}" in
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  "")
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    SYS=unknown
    ;;
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  linux*)
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    SYS=linux
    ;;
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  bsdi*)
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    SYS=bsdi
    CFLAGS_save="${CFLAGS_save} -pthread"; CFLAGS="${CFLAGS_save}"
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    VLC_ADD_LIBS([vcd cdda vcdx],[-ldvd])
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    ;;
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  *bsd*)
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    SYS="${host_os}"
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    CFLAGS_save="${CFLAGS_save} -pthread"; CFLAGS="${CFLAGS_save}"
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    case "${host_os}" in
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      freebsd*)
        CPPFLAGS_save="${CPPFLAGS_save} -I/usr/local/include"
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        CPPFLAGS="${CPPFLAGS_save}"
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        LDFLAGS_save="${LDFLAGS_save} -L/usr/local/lib"
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        LDFLAGS="${LDFLAGS_save}"
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        ;;
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      openbsd*)
        CPPFLAGS_save="${CPPFLAGS_save} -I/usr/local/include -I/usr/X11R6/include"
        CPPFLAGS="${CPPFLAGS_save}"
        LDFLAGS_save="${LDFLAGS_save} -L/usr/local/lib -L/usr/X11R6/lib/"
        LDFLAGS="${LDFLAGS_save}"
        ;;
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    esac
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    ;;
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  darwin*)
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    dnl Force gcc "-arch" flag
    ARCH_flag=""
    case "${host}" in
      i386*)
        ARCH_flag="-arch i386"
      ;;
      ppc64*)
        ARCH_flag="-arch ppc64"
      ;;
      ppc*)
        ARCH_flag="-arch ppc"
      ;;
      x86_64*)
        ARCH_flag="-arch x86_64"
      ;;
    esac

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    SYS=darwin
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    CFLAGS_save="${CFLAGS_save} -D_INTL_REDIRECT_MACROS ${ARCH_flag}"; CFLAGS="${CFLAGS_save}"
    CXXFLAGS_save="${CXXFLAGS_save} -D_INTL_REDIRECT_MACROS ${ARCH_flag}"; CXXFLAGS="${CXXFLAGS_save}"
    CPPFLAGS_save="${CPPFLAGS_save} ${ARCH_flag}"; CPPFLAGS="${CPPFLAGS_save}"
    OBJCFLAGS_save="${OBJCFLAGS_save} -D_INTL_REDIRECT_MACROS -std=gnu99 ${ARCH_flag}"; OBJCFLAGS="${OBJCFLAGS_save}"
    LDFLAGS_save="${LDFLAGS_save} -Wl,-headerpad_max_install_names ${ARCH_flag}"; LDFLAGS="${LDFLAGS_save}"
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    VLC_ADD_LDFLAGS([mkv mp4 motion], [-Wl,-framework,IOKit,-framework,CoreFoundation])
    VLC_ADD_LDFLAGS([libvlc vlc],[-Wl,-undefined,dynamic_lookup])
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    VLC_ADD_LDFLAGS([avcodec avformat access_avio swscale postproc i420_rgb_mmx x264],[-Wl,-read_only_relocs,suppress])
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    VLC_ADD_CFLAGS([motion],[-fconstant-cfstrings])
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    VLC_ADD_LDFLAGS([libvlccore],[-Wl,-framework,CoreFoundation])
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    AC_ARG_ENABLE(macosx-defaults,
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      AS_HELP_STRING([--enable-macosx-defaults],[Build the default configuration on Mac OS X (default enabled)]))
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    if test "x${enable_macosx_defaults}" != "xno"
    then
        echo ""
        echo "Building with Mac OS X defaults:"
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        build_dir=`pwd`
        echo "  Assuming --prefix=${build_dir}/vlc_install_dir"
        ac_default_prefix="${build_dir}/vlc_install_dir"
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        enable_faad="yes"
        echo "  Assuming --enable-faad"
        enable_flac="yes"
        echo "  Assuming --enable-flac"
        enable_theora="yes"
        echo "  Assuming --enable-theora"
        enable_shout="yes"
        echo "  Assuming --enable-shout"
        enable_vcdx="yes"
        echo "  Assuming --enable-vcdx"
        enable_caca="yes"
        echo "  Assuming --enable-caca"
        enable_ncurses="yes"
        echo "  Assuming --enable-ncurses"
        enable_twolame="yes"
        echo "  Assuming --enable-twolame"
        enable_realrtsp="yes"
        echo "  Assuming --enable-realrtsp"
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        enable_libass="yes"
        echo "  Assuming --enable-libass"
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        enable_skins2="no"
        echo "  Assuming --disable-skins2"
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        enable_xcb="no"
        echo "  Assuming --disable-xcb"
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    fi
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    dnl
    dnl  Check for Mac OS X SDK settings
    dnl
    AC_ARG_WITH(macosx-sdk,
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      [AS_HELP_STRING([--with-macosx-sdk=DIR],
        [compile using the SDK in DIR])])
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    if test "${with_macosx_sdk}" != "" ; then
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        CPP="${CPP} -isysroot ${with_macosx_sdk}"
        CC="${CC} -isysroot ${with_macosx_sdk}"
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        CXX="${CXX} -isysroot ${with_macosx_sdk}"
        OBJC="${OBJC} -isysroot ${with_macosx_sdk}"
        LD="${LD} -syslibroot ${with_macosx_sdk}"
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    else
        echo "  No desired SDK version given, falling back to 10.5"
        CPP="${CPP} -isysroot /Developer/SDKs/MacOSX10.5.sdk"
        CC="${CC} -isysroot /Developer/SDKs/MacOSX10.5.sdk"
        CXX="${CXX} -isysroot /Developer/SDKs/MacOSX10.5.sdk"
        OBJC="${OBJC} -isysroot /Developer/SDKs/MacOSX10.5.sdk"
        LD="${LD} -syslibroot /Developer/SDKs/MacOSX10.5.sdk"
        with_macosx_version_min="10.5"
        echo "  Assuming --with-macosx-version-min=10.5"
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    fi
    AC_ARG_WITH(macosx-version-min,
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      [AS_HELP_STRING([--with-macosx-version-min=VERSION],
        [compile for MacOS X VERSION and above])])
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    if test "${with_macosx_version_min}" != "" ; then
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        CPP="${CPP} -mmacosx-version-min=${with_macosx_version_min}"
        CC="${CC} -mmacosx-version-min=${with_macosx_version_min}"
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        CXX="${CXX} -mmacosx-version-min=${with_macosx_version_min}"
        OBJC="${OBJC} -mmacosx-version-min=${with_macosx_version_min}"
        LD="${LD} -macosx_version_min=${with_macosx_version_min}"
        CFLAGS_save="${CFLAGS_save} -DMACOSX_DEPLOYMENT_TARGET=${with_macosx_version_min}"; CFLAGS="${CFLAGS_save}"
        CXXFLAGS_save="${CXXFLAGS_save} -DMACOSX_DEPLOYMENT_TARGET=${with_macosx_version_min}"; CXXFLAGS="${CXXFLAGS_save}"
        OBJCFLAGS_save="${OBJCFLAGS_save} -DMACOSX_DEPLOYMENT_TARGET=${with_macosx_version_min}"; OBJCFLAGS="${OBJCFLAGS_save}"
        MACOSX_DEPLOYMENT_TARGET=${with_macosx_version_min}
        export MACOSX_DEPLOYMENT_TARGET
    fi
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    ;;
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  *mingw32* | *cygwin* | *wince* | *mingwce*)
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    AC_CHECK_TOOL(WINDRES, windres, :)
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    AC_CHECK_TOOL(OBJCOPY, objcopy, :)
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    AC_DEFINE([_WIN32_WINNT], 0x0501, [Define to '0x0501' for Windows XP APIs.])
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    AC_DEFINE([_WIN32_IE], 0x0501, [Define to '0x0501' for IE 5.01 (and shell) APIs.])
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    case "${host_os}" in
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      *wince* | *mingwce* | *mingw32ce*)
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        SYS=mingwce
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        dnl Sadly CeGCC still needs non-wince macros
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        ;;
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      *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],
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            SYS=mingw32, AC_MSG_ERROR([VLC requires -mno-cygwin]))
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        ;;
    esac

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    if test "${SYS}" = "mingw32"; then
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        # add ws2_32 for closesocket, select, recv
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        VLC_ADD_LIBS([libvlccore],[-lws2_32 -lnetapi32 -lwinmm])
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        VLC_ADD_LDFLAGS([vlc],[-mwindows])
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        VLC_ADD_LIBS([win32text],[-lgdi32])
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        VLC_ADD_LIBS([cdda vcdx sdl_image vout_sdl],[-lwinmm])
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        VLC_ADD_LIBS([access_http access_mms access_udp access_tcp access_ftp access_rtmp access_output_udp access_output_shout access_output_rtmp sap stream_out_standard stream_out_select stream_out_rtp stream_out_raop vod_rtsp access_realrtsp oldrc netsync gnutls growl_udp flac ts audioscrobbler lua remoteosd zvbi audiobargraph_a netsync],[-lws2_32])
        SOCKET_LIBS="-lws2_32"
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        dnl
        dnl DEP and ASLR options
        dnl
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        AC_ARG_WITH(peflags,
          [AS_HELP_STRING([--with-peflags],
            [use peflags (default enabled on Windows)])])
        if test "${with_peflags}" != "no" ; then
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          AC_PATH_TOOL(PEFLAGS, peflags, :)
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        fi
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        AC_CHECK_PROGS(U2D, [unix2dos todos], unix2dos)
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        ac_default_prefix="`pwd`/_win32"
        DESTDIR="`pwd`/_win32/"
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        dnl
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        dnl NSIS Installer prefix and WIN64
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        dnl
        case "${host}" in
            amd64*|i686-w64*|x86_64*)
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                HAVE_WIN64="1"
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                PROGRAMFILES="PROGRAMFILES64"
            ;;
            *)
                PROGRAMFILES="PROGRAMFILES"
            ;;
        esac
        AC_SUBST(PROGRAMFILES)

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    fi
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    if test "${SYS}" = "mingwce"; then
        # add ws2 for closesocket, select, recv
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        VLC_ADD_LIBS([libvlccore access_http access_mms access_udp access_tcp access_ftp access_rtmp access_output_udp access_output_rtmp sap netsync audioscrobbler growl stream_out_standard stream_out_select stream_out_rtp remoteosd ts audiobargraph_a netsync],[-lws2])
        SOCKET_LIBS="-lws2"
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        VLC_ADD_LIBS([libvlccore],[-lmmtimer])
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        AC_CHECK_PROGS(U2D, [unix2dos todos], unix2dos)
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        ac_default_prefix="`pwd`/_wince"
        DESTDIR="`pwd`/_wince/"
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    fi
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    ;;
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  *nto*)
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    SYS=nto
    ;;
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  solaris*)
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    SYS=solaris
    ;;
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  hpux*)
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    SYS=hpux
    ;;
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  symbian*)
    SYS=symbian
    ;;
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  *os2*)
    SYS=os2
    LDFLAGS_save="${LDFLAGS_save} -Zomf -Zbin-files -Zargs-wild"; LDFLAGS="${LDFLAGS_save}"
    ;;
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  *)
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    SYS="${host_os}"
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    ;;
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esac
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AM_CONDITIONAL(HAVE_DARWIN,  test "${SYS}" = "darwin")
AM_CONDITIONAL(HAVE_LINUX,   test "${SYS}" = "linux")
AM_CONDITIONAL(HAVE_OS2,     test "${SYS}" = "os2")
AM_CONDITIONAL(HAVE_WIN32,   test "${SYS}" = "mingw32")
AM_CONDITIONAL(HAVE_WIN64,   test "${HAVE_WIN64}" = "1")
AM_CONDITIONAL(HAVE_WINCE,   test "${SYS}" = "mingwce")
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AM_CONDITIONAL(HAVE_SYMBIAN, test "${SYS}" = "symbian")
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AM_CONDITIONAL(USE_PEFLAGS,  test "${with_peflags}" = "yes")
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dnl
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dnl Sadly autoconf doesn't think about testing foo.exe when ask to test
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dnl for program foo on win32

case "${build_os}" in
    cygwin|msys)
        ac_executable_extensions=".exe"
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    ;;
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    *)
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    ;;
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esac

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dnl Android is linux, but a bit different
AS_IF([test "$SYS" = linux],[
    AC_MSG_CHECKING([for an Android system])
    AC_PREPROC_IFELSE([AC_LANG_PROGRAM(
        [[#ifndef __ANDROID__
         # error Not Android
         #endif
        ]],[[;]])
    ],[
      HAVE_ANDROID="1"
      AC_MSG_RESULT([yes])
    ],[
      AC_MSG_RESULT([no])
    ])
])
AM_CONDITIONAL(HAVE_ANDROID, test "${HAVE_ANDROID}" = "1")

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dnl
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dnl  Libtool
dnl  It's very bad, but our former custom system was worst
dnl  -- Courmisch
dnl
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dnl override platform specific check for dependent libraries
dnl otherwise libtool linking of shared libraries will
dnl fail on anything other than pass_all.
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AC_CACHE_VAL(lt_cv_deplibs_check_method,
    [lt_cv_deplibs_check_method=pass_all])
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AC_DISABLE_STATIC
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dnl AC_DISABLE_FAST_INSTALL
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AC_LIBTOOL_DLOPEN
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AC_LIBTOOL_WIN32_DLL
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m4_undefine([AC_PROG_F77])
m4_defun([AC_PROG_F77],[])
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AC_PROG_LIBTOOL

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m4_undefine([AC_DEPLIBS_CHECK_METHOD])
m4_defun([AC_DEPLIBS_CHECK_METHOD],[])

lt_cv_deplibs_check_method=pass_all

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AS_IF([test "${enable_shared}" = "no"], [
  AC_MSG_ERROR([VLC is based on plugins. Shared libraries cannot be disabled.])
])

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dnl
dnl Gettext stuff
dnl
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AM_GNU_GETTEXT_VERSION([0.18.1])
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AM_GNU_GETTEXT([external])
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VLC_ADD_LIBS([libvlccore vlc], [${LTLIBINTL}])
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dnl
dnl Iconv stuff
dnl
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AM_ICONV
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VLC_ADD_CFLAGS([libvlccore],[${INCICONV}])
VLC_ADD_LIBS([libvlccore],[${LTLIBICONV}])
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dnl Check for broken versions of mingw-runtime compatability library
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AS_IF([test "${SYS}" = "mingw32" -o "${SYS}" = "mingwce"], [
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    AC_MSG_CHECKING(for broken mingw-runtime)
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    AC_PREPROC_IFELSE([AC_LANG_SOURCE([
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#include <_mingw.h>
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#if (__MINGW32_MAJOR_VERSION == 3) && (__MINGW32_MINOR_VERSION < 15)
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#ifndef __MINGW64_VERSION_MAJOR
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# error Attempting to use mingw-runtime with broken vsnprintf support
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#endif
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#endif
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    ])], [
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        AC_MSG_RESULT([ok])
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    ], [
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        AC_MSG_RESULT([present])
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        AC_MSG_ERROR([LibVLC requires mingw-runtime version 3.15 or higher!])
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    ])
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    dnl force use of mingw provided c99 *printf over msvcrt
    CPPFLAGS="${CPPFLAGS} -D__USE_MINGW_ANSI_STDIO=1"
    CPPFLAGS_save="${CPPFLAGS_save} -D__USE_MINGW_ANSI_STDIO=1"
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])
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dnl Check for the need to include the mingwex lib for mingw32
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if test "${SYS}" = "mingw32" ; then
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    AC_CHECK_LIB(mingwex,opendir,
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        AC_CHECK_LIB(mingw32,opendir,,
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            [VLC_ADD_LIBS([libvlccore],[-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 "${SYS}" = "mingw32" ; then
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    AC_CACHE_CHECK([if \$CC accepts -mms-bitfields],
        [ac_cv_c_mms_bitfields],
        [CFLAGS="${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

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dnl
dnl Buggy glibc prevention. Purposedly not cached.
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dnl See sourceware.org bugs 5058 and 5443.
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dnl Ubuntu alone has 20 bug numbers for this...
dnl
AC_MSG_CHECKING(for buggy GNU/libc versions)
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AC_PREPROC_IFELSE([AC_LANG_SOURCE([
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#include <limits.h>
#if defined (__GLIBC__) && (__GLIBC__ == 2) \
  && (__GLIBC_MINOR__ >= 5) && (__GLIBC_MINOR__ <= 7)
# error GNU/libc with dcgettext killer bug!
#endif
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])], [
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  AC_MSG_RESULT([not present])
], [
  AC_MSG_RESULT([found])
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  AS_IF([test "x${enable_nls}" != "xno"], [
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    AC_MSG_ERROR([Buggy GNU/libc (version 2.5 - 2.7) present. VLC would crash; there is no viable
work-around for this. Check with your distribution vendor on how to update the
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glibc run-time. Alternatively, build with --disable-nls.])
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  ], [
    AC_DEFINE(DISABLE_BUGGY_GLIBC_CHECK, 1, [Disables runtime check for buggy glibc.])
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  ])
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])

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dnl Plugin compilation stuff

VLC_LIBRARY_SUFFIX

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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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dnl Check for usual libc functions
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AC_CHECK_DECLS([nanosleep],,,[#include <time.h>])
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AC_CHECK_FUNCS([daemon fcntl fdopendir fstatvfs fork getenv getpwuid_r if_nameindex if_nametoindex isatty lstat memalign mmap openat pread posix_fadvise posix_madvise posix_memalign setlocale stricmp strnicmp uselocale])
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AC_REPLACE_FUNCS([asprintf atof atoll dirfd flockfile fsync getdelim getpid gmtime_r lldiv localtime_r nrand48 rewind setenv strcasecmp strcasestr strdup strlcpy strncasecmp strndup strnlen strsep strtof strtok_r strtoll swab tdestroy vasprintf])
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AC_CHECK_FUNCS(fdatasync,,
  [AC_DEFINE(fdatasync, fsync, [Alias fdatasync() to fsync() if missing.])
])
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# Windows CE doesn't have strcoll()
AC_FUNC_STRCOLL

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dnl Check for non-standard system calls
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AC_CHECK_FUNCS([accept4 pipe2 eventfd vmsplice sched_getaffinity])
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AH_BOTTOM([#include <vlc_fixups.h>])

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AC_CHECK_FUNCS(connect,,[
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  AC_CHECK_LIB(socket,connect,[
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    VLC_ADD_LIBS([libvlccore cdda access_http access_mms access_udp access_tcp access_ftp access_rtmp sap access_output_udp access_output_rtmp stream_out_standard growl_udp remoteosd netsync],[-lsocket])
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    SOCKET_LIBS="-lsocket"
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  ])
])
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AC_SUBST(SOCKET_LIBS)
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dnl Check for socklen_t
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AH_TEMPLATE(socklen_t, [Define to `int' if <sys/socket.h> does not define.])
AC_CACHE_CHECK([for socklen_t in sys/socket.h],
ac_cv_type_socklen_t,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
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[#include <sys/types.h>
#ifdef WIN32
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# include <winsock2.h>
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# include <ws2tcpip.h>
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#else
# include <sys/socket.h>
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#endif]], [[socklen_t len; len = 0;]])],
ac_cv_type_socklen_t=yes,
ac_cv_type_socklen_t=no)])
AS_IF([test "$ac_cv_type_socklen_t" = no],
 [AC_DEFINE(socklen_t, int)])
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dnl Check for struct sockaddr_storage
AH_TEMPLATE(sockaddr_storage, [Define to `sockaddr' if <sys/socket.h> does not define.])
AH_TEMPLATE(ss_family, [Define to `sa_family' if <sys/socket.h> does not define.])
AC_CACHE_CHECK([for struct sockaddr_storage], ac_cv_struct_sockaddr_storage,
  [AC_TRY_COMPILE(
    [#include <sys/types.h>
     #if defined( UNDER_CE )
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     # include <winsock2.h>
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     #elif defined( WIN32 )
     # include <winsock2.h>
     #else
     # include <sys/socket.h>
     #endif], [struct sockaddr_storage addr;],
     ac_cv_struct_sockaddr_storage=yes,
     ac_cv_struct_sockaddr_storage=no)])
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AS_IF([test "${ac_cv_struct_sockaddr_storage}" = no], [
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  AC_DEFINE(sockaddr_storage, sockaddr)
  AC_DEFINE(ss_family, sa_family)
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])
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dnl getaddrinfo, getnameinfo and gai_strerror check
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dnl  -lnsl and -lsocket are needed on Solaris;
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dnl  we purposedly make the test fail on Windows
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LIBS_save="${LIBS}"
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AC_SEARCH_LIBS([getaddrinfo], [nsl],,, [${SOCKET_LIBS}])
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LIBS="${LIBS_save}"

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AC_CHECK_FUNCS(inet_aton,,[
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  AC_CHECK_LIB(resolv,inet_aton,[
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    VLC_ADD_LIBS([libvlccore],[-lresolv])
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  ])
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])
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dnl FreeBSD has a gnugetopt library for this:
GNUGETOPT_LIBS=""
AC_CHECK_FUNC(getopt_long,, [
  AC_CHECK_LIB([gnugetopt],[getopt_long], [
    GNUGETOPT_LIBS="-lgnugetopt"
  ])
])
AC_SUBST(GNUGETOPT_LIBS)
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AC_CHECK_LIB(m,cos,[
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  VLC_ADD_LIBS([adjust wave ripple psychedelic gradient a52tofloat32 dtstofloat32 x264 goom visual panoramix rotate noise grain scene kate flac lua chorus_flanger freetype avcodec avformat access_avio swscale postproc i420_rgb faad twolame equalizer spatializer param_eq samplerate libvlccore freetype mod mpc dmo quicktime realvideo qt4 compressor headphone_channel_mixer normvol audiobargraph_a speex mono colorthres extract ball access_imem hotkeys mosaic gaussianblur dbus x264],[-lm])
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  LIBM="-lm"
], [
  LIBM=""
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])
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AC_SUBST(LIBM)
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AC_CHECK_LIB(m,lrintf, [
  AC_DEFINE(HAVE_LRINTF, 1, [Define to 1 if you have the lrintf function])
  VLC_ADD_LIBS([skins2],[-lm])
])

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dnl Check for dynamic plugins
ac_cv_have_plugins=no

# Win32 style
if test "${ac_cv_have_plugins}" = "no"; then
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  if test "${SYS}" = "mingw32" ; then
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    AC_CHECK_LIB(kernel32, main,
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     [VLC_ADD_LIBS([libvlccore],[-lkernel32])
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      ac_cv_have_plugins=yes])
  fi
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fi

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# WinCE style
if test "${ac_cv_have_plugins}" = "no"; then
  if test "${SYS}" = "mingwce"; then
    ac_cv_have_plugins=yes
  fi
fi

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# Only test for dlopen() if the others didn't work
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LIBDL=""
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if test "${ac_cv_have_plugins}" = "no" -o "${SYS}" = "darwin"; then
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  AC_CHECK_HEADERS(dlfcn.h sys/dl.h)
  ac_cv_my_have_dlopen=no
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  AC_CHECK_FUNC(dlopen, [
    ac_cv_my_have_dlopen=yes
  ], [
    AC_CHECK_LIB(dl, dlopen, [
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      ac_cv_my_have_dlopen=yes
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      LIBDL="-ldl"
    ], [
      AC_CHECK_LIB(svld, dlopen, [
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        ac_cv_my_have_dlopen=yes
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        LIBDL="-lsvld"
      ])
    ])
  ])
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  if test "${ac_cv_my_have_dlopen}" = "yes"; then
    AC_DEFINE(HAVE_DL_DLOPEN, 1, [Define if you have the dlopen API])
    ac_cv_have_plugins=yes
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    VLC_ADD_LIBS([libvlccore realvideo lua],[$LIBDL])
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  fi
fi
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AC_SUBST(LIBDL)
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if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
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  dnl Check for pthreads - borrowed from XMMS
  THREAD_LIB=error
  if test "${THREAD_LIB}" = "error"; then
    AC_CHECK_LIB(pthread,main,THREAD_LIB="-lpthread")
  fi
  if test "${THREAD_LIB}" = "error"; then
    AC_CHECK_LIB(pthreads,main,THREAD_LIB="-lpthreads")
  fi
  if test "${THREAD_LIB}" = "error"; then
    AC_CHECK_LIB(c_r,main,THREAD_LIB="-lc_r")
  fi
  if test "${THREAD_LIB}" = "error"; then
    AC_CHECK_FUNCS(pthread_mutex_lock)
    THREAD_LIB=""
  fi
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  VLC_ADD_LIBS([libvlccore libvlc vlc plugin],[${THREAD_LIB}])
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  AC_CHECK_LIB(rt, clock_nanosleep, [
    VLC_ADD_LIBS([libvlccore],[-lrt])
  ], [
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    AC_CHECK_FUNC(nanosleep,,[
      AC_CHECK_LIB(rt,nanosleep, [
        VLC_ADD_LIBS([libvlccore],[-lrt])
      ], [
        AC_CHECK_LIB(posix4,nanosleep, [
          VLC_ADD_LIBS([libvlccore],[-lposix4])
        ])
      ])
    ])
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    dnl HP/UX port
    AC_CHECK_LIB(rt,sem_init, [VLC_ADD_LIBS([libvlccore],[-lrt])])
  ])
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fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"
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dnl Check for misc headers
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AC_MSG_CHECKING(for strncasecmp in strings.h)
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AC_EGREP_HEADER(strncasecmp,strings.h,[
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  AC_MSG_RESULT(yes)
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  AC_DEFINE(STRNCASECMP_IN_STRINGS_H, 1,
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            Define if <strings.h> defines strncasecmp.)],[
  AC_MSG_RESULT(no)])
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dnl Check for headers
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AC_CHECK_HEADERS([search.h])
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AC_CHECK_HEADERS(getopt.h strings.h locale.h xlocale.h)
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AC_CHECK_HEADERS(fcntl.h sys/time.h sys/ioctl.h sys/stat.h)
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AC_CHECK_HEADERS([arpa/inet.h netinet/in.h netinet/udplite.h sys/eventfd.h])
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AC_CHECK_HEADERS([net/if.h], [], [],
  [
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    #include <sys/types.h>
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    #include <sys/socket.h>
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  ])
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AC_CHECK_HEADERS([sys/mount.h], [], [],
  [
    #include <sys/param.h>
  ])
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if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
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  AC_CHECK_HEADERS(machine/param.h sys/shm.h)
  AC_CHECK_HEADERS([linux/version.h linux/dccp.h scsi/scsi.h linux/magic.h])
  AC_CHECK_HEADERS(syslog.h)
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fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"
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dnl LP64 and LLP64 architectures had better define ssize_t by themselves...
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AH_TEMPLATE(ssize_t, [Define to `int' if <stddef.h> does not define.])
AC_CHECK_TYPE(ssize_t,, [
  AC_DEFINE(ssize_t, int)
])

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dnl Check for poll
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AC_SEARCH_LIBS(poll, [poll], [AC_DEFINE(HAVE_POLL, 1, [Define to 1 if the OS is usabl... err, has poll().])], [
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if test ${SYS} != "mingw32" -a ${SYS} != "mingwce"
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then
    AC_MSG_WARN([Your platform does not support poll(). VLC has it's own poll() implementation, but it is only intended to be used on Windows. VLC might crash or be insecure when you see this message. Either switch to an OS with a proper poll() implementation, or implement one for your OS in VLC])
fi
])
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dnl Check for threads library
802
if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
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  AC_CHECK_HEADERS(pthread.h)
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fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"
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dnl It seems that autoconf detects pkg-config only during the first
dnl PKG_CHECK_MODULES from configure.ac - which makes sense. But in our case,
dnl it is nested within a conditional block, so it was not working right.
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dnl Make PKG_CONFIG_PATH precious so that it appears in the help and get saved
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AC_ARG_VAR(PKG_CONFIG_PATH,
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       [Paths where to find .pc not at the default location])
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PKG_PROG_PKG_CONFIG()

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dnl On some OS we need static linking 
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AS_IF([test -n "${PKG_CONFIG}" ],[
    AS_IF([test "${SYS}" = "mingw32" -o "${SYS}" = "mingwce" -o "${SYS}" = "darwin" ],[
        PKG_CONFIG="${PKG_CONFIG} --static"
    ])
])
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dnl
dnl Check for zlib.h and -lz along with system -lminizip if available
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dnl
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AC_CHECK_HEADERS(zlib.h, [ have_zlib=yes ], [ have_zlib=no ])
AM_CONDITIONAL(HAVE_ZLIB, [ test "${have_zlib}" = "yes" ])
if test "${have_zlib}" = "yes"
then
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  VLC_ADD_LIBS([access_http mp4 skins2 sap mkv unzip zip],[-lz])
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  PKG_CHECK_MODULES([MINIZIP], [minizip] , [ have_minizip=yes ], [
    AC_CHECK_HEADERS([unzip.h], [ 
      have_minizip=yes
      MINIZIP_LIBS="-lminizip -lz"
    ], [
      have_minizip=no
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      MINIZIP_CFLAGS="-I\\\${top_srcdir}/libs/unzip"
      MINIZIP_LIBS="\\\${top_builddir}/libs/unzip/libunzip.la"
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    ])
  ])
  VLC_ADD_CPPFLAGS([skins2],[$MINIZIP_CFLAGS])
  VLC_ADD_CFLAGS([zip],[$MINIZIP_CFLAGS])
  VLC_ADD_LIBS([skins2 zip],[$MINIZIP_LIBS])
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  VLC_ADD_PLUGIN([unzip zip])
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fi
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AM_CONDITIONAL(HAVE_MINIZIP, [ test "${have_minizip}" = "yes" ])
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dnl Manual switch for UTF-8
AC_ARG_ENABLE(non-utf8,
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  [AS_HELP_STRING([--enable-non-utf8],
    [support legacy non-UTF-8 systems (default disabled)])],, [
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  AS_IF([test "${SYS}" = "mingw32" -o "${SYS}" = "mingwce"], [
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    enable_non_utf8="no"
  ])
])
AS_IF([test "${enable_non_utf8}" != "no"], [
  AC_DEFINE([ASSUME_UTF8], [1],
            [Define to 1 if the operating system uses UTF-8 internally])
])


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dnl Check for dbus
AC_ARG_ENABLE(dbus,
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  [AS_HELP_STRING([--enable-dbus],
    [compile D-Bus message bus support (default enabled)])])
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case "${SYS}" in
    linux*|*bsd*)
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if test "${enable_dbus}" != "no" -a "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"
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then
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  dnl api stable dbus
  PKG_CHECK_MODULES(DBUS, dbus-1 >= 1.0.0,
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    [ AC_DEFINE( HAVE_DBUS, 1, [Define if you have the D-BUS library] )
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      VLC_ADD_LIBS([libvlccore],[$DBUS_LIBS])
      VLC_ADD_CFLAGS([libvlccore],[$DBUS_CFLAGS])
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      dnl Check for dbus control interface
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        AC_ARG_ENABLE(dbus-control,
          [AS_HELP_STRING([--disable-dbus-control],
            [D-Bus control interface (default enabled)])])
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        if test "${enable_dbus_control}" != "no"
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        then
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          VLC_ADD_PLUGIN([dbus])
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          VLC_ADD_LIBS([dbus],[$DBUS_LIBS])
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          VLC_ADD_CFLAGS([dbus],[$DBUS_CFLAGS])
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        fi
      dnl Check for Telepathy
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        AC_ARG_ENABLE(telepathy,
          AS_HELP_STRING([--enable-telepathy],[Telepathy Presence plugin through DBus(default enabled)]))
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        if test "${enable_telepathy}" != "no"; then
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          VLC_ADD_PLUGIN([telepathy])
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          VLC_ADD_LIBS([telepathy],[$DBUS_LIBS])
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          VLC_ADD_CFLAGS([telepathy],[$DBUS_CFLAGS])
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        fi
        dnl Power Management Inhibiter
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        VLC_ADD_PLUGIN([inhibit])
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        VLC_ADD_LIBS([inhibit],[$DBUS_LIBS])
        VLC_ADD_CFLAGS([inhibit],[$DBUS_CFLAGS])
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    ],
    [AC_MSG_ERROR([Couldn't find DBus >= 1.0.0, install libdbus-dev ?])]
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  )
fi
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;;
esac
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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="${CFLAGS_save} -Wall -Werror"
     AC_TRY_COMPILE([#include <sys/param.h>],
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        [int meuh; ntohl(meuh);],
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        ac_cv_c_ntohl_sys_param_h=yes, ac_cv_c_ntohl_sys_param_h=no)])
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if test "${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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EXTEND_HELP_STRING([Optimization options:])
VLC_RESTORE_FLAGS
dnl
dnl  Compiler warnings
dnl
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RDC_PROG_CC_WFLAGS([all extra sign-compare undef pointer-arith bad-function-cast write-strings missing-prototypes volatile-register-var error-implicit-function-declaration])
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RDC_PROG_CC_FLAGS([-pipe])
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AC_LANG_PUSH([C++])
RDC_PROG_CXX_WFLAGS([all extra sign-compare undef pointer-arith volatile-register-var])
AC_LANG_POP([C++])
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dnl
dnl  Debugging mode
dnl
AC_ARG_ENABLE(debug,
  [AS_HELP_STRING([--enable-debug],
    [build with run-time assertions and debug symbols (default disabled)])],,
  [enable_debug="no"])
AH_TEMPLATE(NDEBUG,
            [Define to 1 if debug code should NOT be compiled])
AS_IF([test "${enable_debug}" != "no"], [
  AC_CHECK_HEADERS([valgrind/valgrind.h])
  CFLAGS="${CFLAGS} -g"
  CXXFLAGS="${CXXFLAGS} -g"
  OBJCFLAGS="${OBJCFLAGS} -g"
  LDFLAGS="${LDFLAGS} -g"
], [
  AC_DEFINE(NDEBUG)
])

dnl
dnl  Profiling
dnl
AC_ARG_ENABLE(gprof,
  [AS_HELP_STRING([--enable-gprof],[profile with gprof (default disabled)])],,
  [enable_gprof="no"])
AS_IF([test "${enable_gprof}" != "no"], [
  CFLAGS="${CFLAGS} -pg"
  CXXFLAGS="${CXXFLAGS} -pg"
  OBJCFLAGS="${OBJCFLAGS} -pg"
  LDFLAGS="${LDFLAGS} -pg"
])

AC_ARG_ENABLE(cprof,
  [AS_HELP_STRING([--enable-cprof],[profile with cprof (default disabled)])],,
  [enable_cprof="no"])
AS_IF([test "${enable_gprof}" != "no"], [
  CFLAGS="${CFLAGS} -finstrument-functions"
  CXXFLAGS="${CXXFLAGS} -finstrument-functions"
  OBJCFLAGS="${OBJCFLAGS} -finstrument-functions"
  LDFLAGS="${LDFLAGS} -finstrument-functions"
])

dnl
dnl  Test coverage
dnl
AC_ARG_ENABLE(coverage,
  [AS_HELP_STRING([--enable-coverage],
    [build for test coverage (default disabled)])],,
  [enable_coverage="no"])
AS_IF([test "${enable_coverage}" != "no"], [
  CFLAGS="-fprofile-arcs -ftest-coverage ${CFLAGS}"
  CXXFLAGS="-fprofile-arcs -ftest-coverage ${CXXFLAGS}"
  LDFLAGS="-lgcov ${LDFLAGS}"
])

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VLC_SAVE_FLAGS

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AS_IF([test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"], [
  AC_CACHE_CHECK([if $CC accepts -fvisibility=hidden],
                 [ac_cv_c_visibility_hidden], [
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    CFLAGS="${CFLAGS_save} -fvisibility=hidden"
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    AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
      ac_cv_c_visibility_hidden=yes
    ], [
      ac_cv_c_visibility_hidden=no
    ])
  ])
  AS_IF([test "${ac_cv_c_visibility_hidden}" != "no"], [
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    VLC_RESTORE_FLAGS
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    CFLAGS="${CFLAGS} -fvisibility=hidden"
    CXXFLAGS="${CXXFLAGS} -fvisibility=hidden"
    OBJCFLAGS="${OBJCFLAGS} -fvisibility=hidden"
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    VLC_SAVE_FLAGS
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  ])
])

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

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dnl Check for various optimization flags
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AS_IF([test "${enable_optimizations}" != "no"], [

  C_O=""
  dnl -O4 and -O3 only in production builds
  AS_IF([test "{enable_debug}" = "no"], [
    AC_CACHE_CHECK([if $CC accepts -O4], [ac_cv_c_o4], [
      CFLAGS="${CFLAGS_save} -O4"
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
        ac_cv_c_o4=yes
      ], [
        ac_cv_c_o4=no
      ])
    ])
    AS_IF([test "${ac_cv_c_o4}" != "no"], [
      C_O="-O4"
    ], [
      AC_CACHE_CHECK([if $CC accepts -O3],  [ac_cv_c_o3], [
        CFLAGS="${CFLAGS_save} -O3"
        AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
          ac_cv_c_o3=yes
        ], [
          ac_cv_c_o3=no
        ])
      ])
      AS_IF([test "${ac_cv_c_o3}" != "no"], [
        C_O="-O3"
      ])
    ])
  ])
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  dnl -O2 and -O in both production and debug builds
  AS_IF([test "x$C_O" = "x"], [
    AC_CACHE_CHECK([if \$CC accepts -O2], [ac_cv_c_o2], [
      CFLAGS="${CFLAGS_save} -O2"
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
        ac_cv_c_o2=yes
      ], [
        ac_cv_c_o2=no
      ])
    ])
    AS_IF([test "${ac_cv_c_o2}" != "no"], [
      C_O="-O2"
    ], [
      AC_CACHE_CHECK([if \$CC accepts -O], [ac_cv_c_o], [
        CFLAGS="${CFLAGS_save} -O"
        AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
          ac_cv_c_o=yes
        ], [
          ac_cv_c_o=no
        ])
      ])
      AS_IF([test "${ac_cv_c_o}" != "no"], [
        C_O="-O"
      ])
    ])
  ])
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  VLC_RESTORE_FLAGS
  CFLAGS="${CFLAGS} ${C_O}"
  CXXFLAGS="${CXXFLAGS} ${C_O}"
  OBJCFLAGS="${OBJCFLAGS} ${C_O}"
  VLC_SAVE_FLAGS

  dnl Check for -ffast-math
  AC_CACHE_CHECK([if $CC accepts -ffast-math], [ac_cv_c_fast_math], [
    CFLAGS="${CFLAGS_save} -ffast-math"
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
      ac_cv_c_fast_math=yes
    ], [
      ac_cv_c_fast_math=no
    ])
  ])
  AS_IF([test "${ac_cv_c_fast_math}" != "no"], [
    VLC_RESTORE_FLAGS
    CFLAGS="${CFLAGS} -ffast-math"
    CXXFLAGS="${CXXFLAGS} -ffast-math"
    OBJCFLAGS="${OBJCFLAGS} -ffast-math"
    VLC_SAVE_FLAGS
  ])
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  dnl Check for -funroll-loops
  AC_CACHE_CHECK([if $CC accepts -funroll-loops], [ac_cv_c_unroll_loops], [
    CFLAGS="${CFLAGS_save} -funroll-loops"
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
      ac_cv_c_unroll_loops=yes
    ], [
      ac_cv_c_unroll_loops=no
    ])
  ])
  AS_IF([test "${ac_cv_c_unroll_loops}" != "no"], [
    VLC_RESTORE_FLAGS
    CFLAGS="${CFLAGS} -funroll-loops"
    CXXFLAGS="${CXXFLAGS} -funroll-loops"
    OBJCFLAGS="${OBJCFLAGS} -funroll-loops"
    VLC_SAVE_FLAGS
  ])

  AS_IF([test "$enable_debug" = "no"], [
    dnl Check for -fomit-frame-pointer
    AC_CACHE_CHECK([if $CC accepts -fomit-frame-pointer],
      [ac_cv_c_omit_frame_pointer], [
      CFLAGS="${CFLAGS_save} -fomit-frame-pointer"
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
        ac_cv_c_omit_frame_pointer=yes
      ], [
        ac_cv_c_omit_frame_pointer=no
      ])
    ])
    AS_IF([test "${ac_cv_c_omit_frame_pointer}" != "no"], [
      VLC_RESTORE_FLAGS
      AS_IF([test "${SYS}" != "darwin"], [
        CFLAGS="${CFLAGS} -fomit-frame-pointer"
        CXXFLAGS="${CXXFLAGS} -fomit-frame-pointer"
      ], [
        dnl On darwin we explicitely disable it.
        CFLAGS="${CFLAGS} -fno-omit-frame-pointer"
        CXXFLAGS="${CXXFLAGS} -fno-omit-frame-pointer"
        OBJCFLAGS="${OBJCFLAGS} -fno-omit-frame-pointer"
      ])
      VLC_SAVE_FLAGS
    ])
  ])
])
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dnl Check for Darwin plugin linking flags
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AS_IF([test "${SYS}" = "darwin"], [
  AC_CACHE_CHECK([if $CC accepts -bundle -undefined error],
    [ac_cv_ld_darwin], [
    CFLAGS="${CFLAGS_save} -bundle -undefined error"
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
      ac_cv_ld_darwin=yes
    ], [
      ac_cv_ld_darwin=no
    ])
  ])
  AS_IF([test "${ac_cv_ld_darwin}" != "no"], [
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    VLC_ADD_LDFLAGS([plugin],[-bundle -undefined error])
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  ])
])
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