AC_PREREQ(2.52)

dnl please read gstreamer/docs/random/autotools before changing this file

dnl initialize autoconf
dnl releases only do -Wall, git and prerelease does -Werror too
dnl use a three digit version number for releases, and four for git/prerelease
AC_INIT(GStreamer XVBO Plug-in, 0.10.26.3,
    http://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer,
    gst-plugins-xvbo)

AG_GST_INIT

dnl initialize automake
AM_INIT_AUTOMAKE([-Wno-portability])

dnl define PACKAGE_VERSION_* variables
AS_VERSION

dnl check if this is a release version
AS_NANO(GST_GIT="no", GST_GIT="yes")

dnl can autoconf find the source ?
AC_CONFIG_SRCDIR([sys/xvboimage/xvboimagesink.c])

dnl define the output header for config
AM_CONFIG_HEADER([config.h])

dnl AM_MAINTAINER_MODE only provides the option to configure to enable it
AM_MAINTAINER_MODE

dnl sets host_* variables
AC_CANONICAL_HOST

dnl our libraries and install dirs use major.minor as a version
GST_MAJORMINOR=$PACKAGE_VERSION_MAJOR.$PACKAGE_VERSION_MINOR
dnl we override it here if we need to for the release candidate of new series
GST_MAJORMINOR=0.10
AC_SUBST(GST_MAJORMINOR)

dnl FIXME: this macro doesn't actually work;
dnl the generated libtool script has no support for the listed tags.
dnl So this needs to be fixed first if we want to use this
dnl AS_LIBTOOL_TAGS

AC_LIBTOOL_WIN32_DLL
AM_PROG_LIBTOOL

dnl *** required versions of GStreamer stuff ***
GST_REQ=0.10.26.3

dnl *** autotools stuff ****

dnl allow for different autotools
AS_AUTOTOOLS_ALTERNATE

dnl Add parameters for aclocal
AC_SUBST(ACLOCAL_AMFLAGS, "-I m4 -I common/m4")

dnl set up gettext
dnl the version check needs to stay here because autopoint greps for it
AM_GNU_GETTEXT_VERSION([0.17])
AM_GNU_GETTEXT([external])
AG_GST_GETTEXT([gst-plugins-xvbo-$GST_MAJORMINOR])

dnl *** check for arguments to configure ***

AG_GST_ARG_DEBUG
AG_GST_ARG_PROFILING
AG_GST_ARG_VALGRIND
AG_GST_ARG_GCOV

AG_GST_ARG_EXAMPLES

AG_GST_ARG_WITH_PKG_CONFIG_PATH
AG_GST_ARG_WITH_PACKAGE_NAME
AG_GST_ARG_WITH_PACKAGE_ORIGIN

dnl let distro override plugin install helper path
AC_ARG_WITH(install-plugins-helper,
  AC_HELP_STRING([--with-install-plugins-helper],
    [specify path of helper script to call to install plugins]),
  [
    case "${withval}" in
      yes) AC_MSG_ERROR(bad value ${withval} for --with-install-plugins-helper) ;;
      no)  AC_MSG_ERROR(bad value ${withval} for --with-install-plugins-helper) ;;
      *)   GST_INSTALL_PLUGINS_HELPER="${withval}" ;;
    esac
  ],
  [
    dnl Default value
    AS_AC_EXPAND(GST_INSTALL_PLUGINS_HELPER,${libexecdir}/gst-install-plugins-helper)
  ]
)
AC_MSG_NOTICE(Using $GST_INSTALL_PLUGINS_HELPER as plugin install helper)
AC_DEFINE_UNQUOTED(GST_INSTALL_PLUGINS_HELPER, "$GST_INSTALL_PLUGINS_HELPER",
    [plugin install helper script])
AC_SUBST(GST_INSTALL_PLUGINS_HELPER)

AG_GST_ARG_WITH_PLUGINS

dnl *** checks for platform ***

dnl * hardware/architecture *

dnl common/m4/gst-arch.m4
dnl check CPU type
AG_GST_ARCH

dnl check for large file support
dnl affected plugins must include config.h
AC_SYS_LARGEFILE

dnl *** checks for programs ***

dnl find a compiler
AC_PROG_CC
AC_PROG_CXX

dnl determine if c++ is available on this system
AC_CHECK_PROG(HAVE_CXX, $CXX, yes, no)

dnl determine c++ preprocessor
dnl FIXME: do we need this ?
AC_PROG_CXXCPP

dnl check if the compiler supports '-c' and '-o' options
AM_PROG_CC_C_O

AC_PATH_PROG(VALGRIND_PATH, valgrind, no)
AM_CONDITIONAL(HAVE_VALGRIND, test ! "x$VALGRIND_PATH" = "xno")

dnl check for gobject-introspection
GOBJECT_INTROSPECTION_CHECK([0.6.3])

dnl check for documentation tools
GTK_DOC_CHECK([1.3])
AS_PATH_PYTHON([2.1])
AG_GST_PLUGIN_DOCS([1.3],[2.1])

dnl *** checks for libraries ***

dnl libm, for sin() etc.
AC_CHECK_LIBM
AC_SUBST(LIBM)

dnl *** checks for header files ***

dnl check if we have ANSI C header files
AC_HEADER_STDC

dnl used in gst/ffmpegcolorspace/mem.c
dnl FIXME: could be fixed by redefining av_malloc and av_free to GLib's
AC_CHECK_HEADERS([malloc.h])

dnl used in gst-libs/gst/pbutils and associated unit test
AC_CHECK_HEADERS([process.h sys/types.h sys/wait.h sys/stat.h])

dnl ffmpegcolorspace includes _stdint.h
dnl also, Windows does not have long long
AX_CREATE_STDINT_H

dnl *** checks for functions ***
AC_CHECK_FUNCS([localtime_r gmtime_r])

dnl *** checks for types/defines ***

dnl *** checks for structures ***

dnl *** checks for compiler characteristics ***

dnl *** checks for library functions ***

dnl Check for fast float to int casting as defined in C99
dnl used in gst-libs/gst/floatcast/floatcast.h
save_libs=$LIBS
LIBS="$LIBS $LIBM"
AC_C99_FUNC_LRINT
AC_C99_FUNC_LRINTF
LIBS=$save_libs

dnl Check for a way to display the function name in debug output
AG_GST_CHECK_FUNCTION

dnl *** checks for socket and nsl libraries ***
AC_CHECK_FUNC(socket,,[AC_CHECK_LIB(socket,socket)])
AC_CHECK_FUNC(gethostbyname,,[AC_CHECK_LIB(nsl,gethostbyname)])

dnl *** checks for dependency libraries ***

dnl GLib is required
AG_GST_GLIB_CHECK([2.18])

dnl checks for gstreamer
dnl uninstalled is selected preferentially -- see pkg-config(1)
AG_GST_CHECK_GST($GST_MAJORMINOR, [$GST_REQ], yes)
AG_GST_CHECK_GST_BASE($GST_MAJORMINOR, [$GST_REQ], yes)
AG_GST_CHECK_GST_GDP($GST_MAJORMINOR, [$GST_REQ], yes)
AG_GST_CHECK_GST_CONTROLLER($GST_MAJORMINOR, [$GST_REQ], yes)
AG_GST_CHECK_GST_CHECK($GST_MAJORMINOR, [$GST_REQ], no)
AM_CONDITIONAL(HAVE_GST_CHECK, test "x$HAVE_GST_CHECK" = "xyes")

dnl Check for documentation xrefs
GLIB_PREFIX="`$PKG_CONFIG --variable=prefix glib-2.0`"
GST_PREFIX="`$PKG_CONFIG --variable=prefix gstreamer-$GST_MAJORMINOR`"
AC_SUBST(GLIB_PREFIX)
AC_SUBST(GST_PREFIX)

dnl *** set variables based on configure arguments ***

dnl set license and copyright notice
GST_LICENSE="LGPL"
AC_DEFINE_UNQUOTED(GST_LICENSE, "$GST_LICENSE", [GStreamer license])
AC_SUBST(GST_LICENSE)

dnl set location of plugin directory
AG_GST_SET_PLUGINDIR

dnl define an ERROR_CFLAGS Makefile variable
AG_GST_SET_ERROR_CFLAGS($GST_GIT)

dnl define an ERROR_CXXFLAGS Makefile variable
AG_GST_SET_ERROR_CXXFLAGS($GST_GIT)

dnl define correct level for debugging messages
AG_GST_SET_LEVEL_DEFAULT($GST_GIT)

dnl *** plug-ins to include ***

dnl check for gstreamer core features (subsystems)
GST_CONFIGPATH=`$PKG_CONFIG --variable=includedir gstreamer-0.10`"/gst/gstconfig.h"
AG_GST_PARSE_SUBSYSTEM_DISABLES($GST_CONFIGPATH)
AM_CONDITIONAL(USE_XML, test $GST_DISABLE_XML != "1")

dnl *** sys plug-ins ***

echo
AC_MSG_NOTICE([Checking libraries for plugins in sys/])
echo

dnl *** X11 ***
translit(dnm, m, l) AM_CONDITIONAL(USE_X, true)
AG_GST_CHECK_FEATURE(X, [X libraries and plugins], , [
  AC_PATH_XTRA
  ac_cflags_save="$CFLAGS"
  ac_cppflags_save="$CPPFLAGS"
  CFLAGS="$CFLAGS $X_CFLAGS"
  CPPFLAGS="$CPPFLAGS $X_CFLAGS"

  dnl now try to find the HEADER
  AC_CHECK_HEADER(X11/Xlib.h, HAVE_X="yes", HAVE_X="no")

  if test "x$HAVE_X" = "xno"
  then
    AC_MSG_NOTICE([cannot find X11 development files])
  else
    dnl this is much more than we want
    X_LIBS="$X_LIBS $X_PRE_LIBS $X_EXTRA_LIBS"
    dnl AC_PATH_XTRA only defines the path needed to find the X libs,
    dnl it does not add the libs; therefore we add them here
    X_LIBS="$X_LIBS -lX11"
    AC_SUBST(X_CFLAGS)
    AC_SUBST(X_LIBS)
  fi
  AC_SUBST(HAVE_X)
  CFLAGS="$ac_cflags_save"
  CPPFLAGS="$ac_cppflags_save"
])
  
dnl Check for Xv extension
translit(dnm, m, l) AM_CONDITIONAL(USE_XVIDEO, true)
AG_GST_CHECK_FEATURE(XVIDEO, [X11 XVideo extensions], , [
  AG_GST_CHECK_XV
])

dnl check for X Shm
translit(dnm, m, l) AM_CONDITIONAL(USE_XSHM, true)
AG_GST_CHECK_FEATURE(XSHM, [X Shared Memory extension], , [
  if test x$HAVE_X = xyes; then
    AC_CHECK_LIB(Xext, XShmAttach, 
		 HAVE_XSHM="yes", HAVE_XSHM="no",
		 $X_LIBS) 
    if test "x$HAVE_XSHM" = "xyes"; then
      XSHM_LIBS="-lXext"
    else
      dnl On AIX, it is in XextSam instead, but we still need -lXext
      AC_CHECK_LIB(XextSam, XShmAttach, 
		   HAVE_XSHM="yes", HAVE_XSHM="no",
		   $X_LIBS) 
      if test "x$HAVE_XSHM" = "xyes"; then
	XSHM_LIBS="-lXext -lXextSam"
      fi
    fi
  fi
], , [ 
  AC_SUBST(HAVE_XSHM) 
  AC_SUBST(XSHM_LIBS) 
])

dnl check for libbmm and libdrm
translit(dnm, m, l) AM_CONDITIONAL(USE_XVBO, true)
AG_GST_CHECK_FEATURE(XVBO, [XVBO buffer passing], [xvboimagesink], [
  if test x$HAVE_X = xyes; then
    AG_GST_PKG_CHECK_MODULES(LIBBMM, libbmm >= 2.0.0, [ HAVE_LIBBMM=yes ], [ HAVE_LIBBMM=no ])
    if test x$HAVE_LIBBMM = xyes; then
      AG_GST_PKG_CHECK_MODULES(LIBDRM, libdrm >= 2.4, [ HAVE_XVBO=yes ], [ HAVE_XVBO=no ])
      if test x$HAVE_XVBO = xyes; then
        dnl check that libbmm contains the necessary function
        AC_CHECK_LIB(bmm, bmm_dmabuf_fd, , HAVE_XVBO=no, $LIBBMM_LIBS)
      fi
    fi
  fi
], , [
  AC_SUBST(LIBBMM_CFLAGS)
  AC_SUBST(LIBBMM_LIBS)
  AC_SUBST(LIBDRM_CFLAGS)
  AC_SUBST(LIBDRM_LIBS)
])

dnl *** finalize CFLAGS, LDFLAGS, LIBS

dnl Overview:
dnl GST_OPTION_CFLAGS:  common flags for profiling, debugging, errors, ...
dnl GST_*:              flags shared by built objects to link against GStreamer
dnl GST_PLUGINS_BASE_CFLAGS: to link internally against the plugins base libs
dnl                          (compare to other modules) or for i18n
dnl GST_ALL_LDFLAGS:    linker flags shared by all
dnl GST_LIB_LDFLAGS:    additional linker flags for all libaries
dnl GST_PLUGIN_LDFLAGS: flags to be used for all plugins

dnl GST_OPTION_CFLAGS
if test "x$USE_DEBUG" = xyes; then
   PROFILE_CFLAGS="-g"
fi
AC_SUBST(PROFILE_CFLAGS)

if test "x$PACKAGE_VERSION_NANO" = "x1"; then
  dnl Define _only_ when compiling a git version (not pre-releases or releases)
  DEPRECATED_CFLAGS="-DGST_DISABLE_DEPRECATED"
else
  DEPRECATED_CFLAGS=""
fi
AC_SUBST(DEPRECATED_CFLAGS)

dnl every flag in GST_OPTION_CFLAGS and GST_OPTION_CXXFLAGS can be overridden
dnl at make time with e.g. make ERROR_CFLAGS=""
GST_OPTION_CFLAGS="\$(ERROR_CFLAGS) \$(DEBUG_CFLAGS) \$(PROFILE_CFLAGS) \$(GCOV_CFLAGS) \$(OPT_CFLAGS) \$(DEPRECATED_CFLAGS)"
GST_OPTION_CXXFLAGS="\$(ERROR_CXXFLAGS) \$(DEBUG_CFLAGS) \$(PROFILE_CFLAGS) \$(GCOV_CFLAGS) \$(OPT_CFLAGS) \$(DEPRECATED_CFLAGS)"
AC_SUBST(GST_OPTION_CFLAGS)
AC_SUBST(GST_OPTION_CXXFLAGS)

dnl FIXME: do we want to rename to GST_ALL_* ?
dnl add GST_OPTION_CFLAGS, but overridable
GST_CXXFLAGS="$GST_CFLAGS \$(GST_OPTION_CXXFLAGS)"
GST_CFLAGS="$GST_CFLAGS \$(GST_OPTION_CFLAGS)"
AC_SUBST(GST_CFLAGS)
AC_SUBST(GST_CXXFLAGS)
dnl add GCOV libs because libtool strips -fprofile-arcs -ftest-coverage
GST_LIBS="$GST_LIBS \$(GCOV_LIBS)"
AC_SUBST(GST_LIBS)

dnl LDFLAGS really should only contain flags, not libs - they get added before
dnl whatevertarget_LIBS and -L flags here affect the rest of the linking
GST_ALL_LDFLAGS="-no-undefined"
AC_SUBST(GST_ALL_LDFLAGS)

dnl GST_LIB_LDFLAGS
dnl linker flags shared by all libraries
dnl LDFLAGS modifier defining exported symbols from built libraries
dnl (export _gst_foo but not __gst_foo)
GST_LIB_LDFLAGS="-export-symbols-regex ^_?\(gst_\|Gst\|GST_\).*"
AC_SUBST(GST_LIB_LDFLAGS)

dnl this really should only contain flags, not libs - they get added before
dnl whatevertarget_LIBS and -L flags here affect the rest of the linking
GST_PLUGIN_LDFLAGS="-module -avoid-version -export-symbols-regex '^[_]*gst_plugin_desc\$\$' $GST_ALL_LDFLAGS"
AC_SUBST(GST_PLUGIN_LDFLAGS)

SHAVE_INIT([common],[enable])

dnl *** output files ***

AC_CONFIG_FILES(
Makefile
common/shave
common/shave-libtool
gst-plugins-xvbo.spec
sys/Makefile
sys/xvboimage/Makefile
docs/Makefile
docs/design/Makefile
docs/plugins/Makefile
docs/version.entities
po/Makefile.in
common/Makefile
common/m4/Makefile
m4/Makefile
)

AC_OUTPUT

AG_GST_OUTPUT_PLUGINS