GCC 4.7 fix.

This partially resolves bug report 958.
Thanks to David C. Rankin and Serghei Amelian.

ksnapshot/CMakeLists.txt

@@ -40,6 +40,6 @@ tde_add_executable( ksnapshot AUTOMOC
   SOURCES
     ksnapshotiface.skel main.cpp ksnapshot.cpp regiongrabber.cpp
     windowgrabber.cpp ksnapshotwidget.ui
-  LINK tdeprint-shared
+  LINK tdeprint-shared ${XEXT_LIBRARIES}
   DESTINATION ${BIN_INSTALL_DIR}
 )

ksnapshot/ConfigureChecks.cmake

@@ -9,4 +9,13 @@
 #
 #################################################
 
-check_include_file( X11/extensions/shape.h HAVE_X11_EXTENSIONS_SHAPE_H )
+## test for and explicitly include libXext
+if( WITH_XEXT )
+  pkg_search_module( XEXT xext )
+  if( XEXT_FOUND )
+    check_include_file( "X11/extensions/shape.h" HAVE_X11_EXTENSIONS_SHAPE_H )
+  endif( )
+  if( NOT XEXT_FOUND )
+    tde_message_fatal( "You requested Xext support, but was not found on your system." )
+  endif( )
+endif( )