Add xscreensaver support to CMake

This closes Bug 859
(cherry picked from commit 80deb52955)

CMakeLists.txt

@@ -66,6 +66,7 @@ option( WITH_XRENDER "Enable xrender support" OFF )
 option( WITH_XDAMAGE "Enable xdamage support" OFF )
 option( WITH_XEXT "Enable xext support" OFF )
 option( WITH_XTEST "Enable xext support" OFF )
+option( WITH_XSCREENSAVER "Enable xscreensaver support" OFF )
 option( WITH_LIBART "Enable libart support (for SVG icons and wallpapers)" OFF )
 option( WITH_LIBUSB "Enable control of some mouse models through libusb" OFF )
 option( WITH_LIBRAW1394 "Enable visualization of ieee1394 devices through libraw1394" OFF )

ConfigureChecks.cmake

@@ -130,6 +130,26 @@ if( WITH_XTEST )
 endif( )
 
 
+# xscreensaver ()
+if( WITH_XSCREENSAVER )
+  check_library_exists( Xss XScreenSaverQueryInfo "" HAVE_XSSLIB )
+  if( HAVE_XSSLIB )
+    pkg_search_module( XSS xscrnsaver )
+  else( )
+    check_library_exists( Xext XScreenSaverQueryInfo "" HAVE_XSSLIB )
+    if( HAVE_XSSLIB )
+      pkg_search_module( XSS xext )
+    endif( )
+  endif( )
+  check_include_file( X11/extensions/scrnsaver.h HAVE_XSCREENSAVER_H )
+  if( HAVE_XSSLIB AND HAVE_XSCREENSAVER_H )
+    set( HAVE_XSCREENSAVER 1 )
+  else( )
+    tde_message_fatal( "xscreensaver is requested, but was not found on your system" )
+  endif( )
+endif( )
+
+
 # GL
 if( BUILD_KDESKTOP OR BUILD_KCONTROL OR BUILD_KSCREENSAVER )
 check_library_exists( GL glXChooseVisual "" HAVE_GLXCHOOSEVISUAL )

config.h.cmake

@@ -18,6 +18,9 @@
 // kxkb
 #cmakedefine HAVE_XTEST 1
 
+// xscreensaver
+#cmakedefine HAVE_XSCREENSAVER 1
+
 // libart
 #cmakedefine HAVE_LIBART 1
 

kdesktop/CMakeLists.txt

@@ -94,6 +94,7 @@ tde_add_kdeinit_executable( ${target} AUTOMOC
     kdesktopsettings-static bgnd-static dmctl-static
     konq-shared kutils-shared
     ${XRENDER_LIBRARIES} ${XCURSOR_LIBRARIES} Xext dl
+    ${XSS_LIBRARIES}
 )