-# VIDMODE()
-#
-# Check for the presence of the "VidMode" X Window System extension.
-# Defines "VIDMODE" and sets the $(VIDMODE) variable to "yes" if the extension
-# is present.
-AC_DEFUN([X11_EXT_VIDMODE],
-[
- AC_REQUIRE([X11_DEVEL])
-
- # Store these
- OLDLIBS=$LIBS
- OLDCPPFLAGS=$CPPFLAGS
-
- CPPFLAGS="$CPPFLAGS $X_CFLAGS"
- LIBS="$LIBS $X_LIBS -lXext -lXxf86vm"
-
- AC_CHECK_LIB([Xxf86vm], [XF86VidModeGetViewPort],
- AC_MSG_CHECKING([for X11/extensions/xf86vmode.h])
- AC_TRY_LINK(
- [
- #include <X11/Xlib.h>
- #include <X11/extensions/xf86vmode.h>
- ],
- [
- Display *d;
- int i;
- XF86VidModeQueryExtension(d, &i, &i);
- XF86VidModeGetViewPort(d, i, &i, &i);
- ],
- [
- AC_MSG_RESULT([yes])
- VIDMODE="yes"
- AC_DEFINE([VIDMODE], [1], [Found the VidMode extension])
-
- VIDMODE_CFLAGS=""
- VIDMODE_LIBS="-lXext -lXxf86vm"
- AC_SUBST(VIDMODE_CFLAGS)
- AC_SUBST(VIDMODE_LIBS)
- ],
- [
- AC_MSG_RESULT([no])
- VIDMODE="no"
- ])
- )
-
- LIBS=$OLDLIBS
- CPPFLAGS=$OLDCPPFLAGS
-
- AC_MSG_CHECKING([for the VidMode extension])
- if test "$VIDMODE" = "yes"; then
- AC_MSG_RESULT([yes])
- else
- AC_MSG_RESULT([no])
- fi
-])
-