+### Use XRandr (-lXrandr) if available
+HAVE_XRANDR=no
+if test "${HAVE_X11}" = "yes"; then
+ XRANDR_REQUIRED=1.2.2
+ XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
+ PKG_CHECK_MODULES(XRANDR, $XRANDR_MODULES, HAVE_XRANDR=yes, HAVE_XRANDR=no)
+ if test $HAVE_XRANDR = no; then
+ # Test old way in case pkg-config doesn't have it (older machines).
+ AC_CHECK_HEADER(X11/extensions/Xrandr.h,
+ [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)])
+ if test $HAVE_XRANDR = yes; then
+ XRANDR_LIBS=-lXrandr
+ AC_SUBST(XRANDR_LIBS)
+ fi
+ fi
+ if test $HAVE_XRANDR = yes; then
+ SAVE_CFLAGS="$CFLAGS"
+ SAVE_LIBS="$LIBS"
+ CFLAGS="$XRANDR_CFLAGS $CFLAGS"
+ LIBS="$XRANDR_LIBS $LIBS"
+ AC_CHECK_FUNCS(XRRGetOutputPrimary XRRGetScreenResourcesCurrent)
+ CFLAGS="$SAVE_CFLAGS"
+ LIBS="$SAVE_LIBS"
+
+ AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
+ fi
+fi
+
+### Use Xinerama (-lXinerama) if available
+HAVE_XINERAMA=no
+if test "${HAVE_X11}" = "yes"; then
+ XINERAMA_REQUIRED=1.0.2
+ XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
+ PKG_CHECK_MODULES(XINERAMA, $XINERAMA_MODULES, HAVE_XINERAMA=yes,
+ HAVE_XINERAMA=no)
+ if test $HAVE_XINERAMA = no; then
+ # Test old way in case pkg-config doesn't have it (older machines).
+ AC_CHECK_HEADER(X11/extensions/Xinerama.h,
+ [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
+ if test $HAVE_XINERAMA = yes; then
+ XINERAMA_LIBS=-lXinerama
+ AC_SUBST(XINERAMA_LIBS)
+ fi
+ fi
+ if test $HAVE_XINERAMA = yes; then
+ AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
+ fi
+fi
+
+