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dnl macros for X-related detections
dnl AC_SUBST's HAVE_X, X_CFLAGS, X_LIBS
AC_DEFUN([AG_GST_CHECK_X],
[
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 *** XVideo ***
dnl Look for the PIC library first, Debian requires it.
dnl Check debian-devel archives for gory details.
dnl 20020110:
dnl At the moment XFree86 doesn't distribute shared libXv due
dnl to unstable API. On many platforms you CAN NOT link a shared
dnl lib to a static non-PIC lib. This is what the xvideo GStreamer
dnl plug-in wants to do. So Debian distributes a PIC compiled
dnl version of the static lib for plug-ins to link to when it is
dnl inappropriate to link the main application to libXv directly.
dnl FIXME: add check if this platform can support linking to a
dnl non-PIC libXv, if not then don not use Xv.
dnl FIXME: perhaps warn user if they have a shared libXv since
dnl this is an error until XFree86 starts shipping one
AC_DEFUN([AG_GST_CHECK_XV],
[
if test x$HAVE_X = xyes; then
AC_CHECK_LIB(Xv_pic, XvQueryExtension,
HAVE_XVIDEO="yes", HAVE_XVIDEO="no",
$X_LIBS -lXext)
if test x$HAVE_XVIDEO = xyes; then
XVIDEO_LIBS="-lXv_pic -lXext"
AC_SUBST(XVIDEO_LIBS)
else
dnl try again using something else if we didn't find it first
if test x$HAVE_XVIDEO = xno; then
AC_CHECK_LIB(Xv, XvQueryExtension,
HAVE_XVIDEO="yes", HAVE_XVIDEO="no",
$X_LIBS -lXext)
if test x$HAVE_XVIDEO = xyes; then
XVIDEO_LIBS="-lXv -lXext"
AC_SUBST(XVIDEO_LIBS)
fi
fi
fi
fi
])
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