1dnl macros for X-related detections 2dnl AC_SUBST's HAVE_X, X_CFLAGS, X_LIBS 3AC_DEFUN([AG_GST_CHECK_X], 4[ 5 AC_PATH_XTRA 6 ac_cflags_save="$CFLAGS" 7 ac_cppflags_save="$CPPFLAGS" 8 CFLAGS="$CFLAGS $X_CFLAGS" 9 CPPFLAGS="$CPPFLAGS $X_CFLAGS" 10 11 dnl now try to find the HEADER 12 HAVE_X="no" 13 AC_CHECK_HEADER([X11/Xlib.h], [ 14 dnl and then the library with the most uniquitous function 15 AC_CHECK_LIB(X11, [XSync], [HAVE_X="yes"], [], [$X_LIBS $X_PRE_LIBS $X_EXTRA_LIBS]) 16 ], [], [AC_INCLUDES_DEFAULT]) 17 18 if test "x$HAVE_X" = "xno" 19 then 20 AC_MSG_NOTICE([cannot find X11 development files]) 21 else 22 dnl this is much more than we want 23 X_LIBS="$X_LIBS $X_PRE_LIBS $X_EXTRA_LIBS" 24 dnl AC_PATH_XTRA only defines the path needed to find the X libs, 25 dnl it does not add the libs; therefore we add them here 26 X_LIBS="$X_LIBS -lX11" 27 AC_SUBST(X_CFLAGS) 28 AC_SUBST(X_LIBS) 29 fi 30 AC_SUBST(HAVE_X) 31 32 CFLAGS="$ac_cflags_save" 33 CPPFLAGS="$ac_cppflags_save" 34]) 35 36dnl *** XVideo *** 37dnl Look for the PIC library first, Debian requires it. 38dnl Check debian-devel archives for gory details. 39dnl 20020110: 40dnl At the moment XFree86 doesn't distribute shared libXv due 41dnl to unstable API. On many platforms you CAN NOT link a shared 42dnl lib to a static non-PIC lib. This is what the xvideo GStreamer 43dnl plug-in wants to do. So Debian distributes a PIC compiled 44dnl version of the static lib for plug-ins to link to when it is 45dnl inappropriate to link the main application to libXv directly. 46dnl FIXME: add check if this platform can support linking to a 47dnl non-PIC libXv, if not then don not use Xv. 48dnl FIXME: perhaps warn user if they have a shared libXv since 49dnl this is an error until XFree86 starts shipping one 50AC_DEFUN([AG_GST_CHECK_XV], 51[ 52 if test x$HAVE_X = xyes; then 53 AC_CHECK_LIB(Xv_pic, XvQueryExtension, 54 HAVE_XVIDEO="yes", HAVE_XVIDEO="no", 55 $X_LIBS -lXext) 56 57 if test x$HAVE_XVIDEO = xyes; then 58 XVIDEO_LIBS="-lXv_pic -lXext" 59 AC_SUBST(XVIDEO_LIBS) 60 else 61 dnl try again using something else if we didn't find it first 62 if test x$HAVE_XVIDEO = xno; then 63 AC_CHECK_LIB(Xv, XvQueryExtension, 64 HAVE_XVIDEO="yes", HAVE_XVIDEO="no", 65 $X_LIBS -lXext) 66 67 if test x$HAVE_XVIDEO = xyes; then 68 XVIDEO_LIBS="-lXv -lXext" 69 AC_SUBST(XVIDEO_LIBS) 70 fi 71 fi 72 fi 73 fi 74]) 75