only compile kuickshow when Imlib is found

svn path=/trunk/KDE/kdegraphics/cmake/modules/; revision=534865

cmake/modules/FindIMLIB.cmake

@@ -0,0 +1,60 @@
+# - Try to find the Imlib graphics library
+# Once done this will define
+#
+#  IMLIB_FOUND - system has IMLIB
+#  IMLIB_INCLUDE_DIR - the IMLIB include directory
+#  IMLIB_LIBRARIES - Link these to use IMLIB
+#  IMLIB_DEFINITIONS - Compiler switches required for using IMLIB
+#
+
+IF (DEFINED CACHED_IMLIB)
+
+  # in cache already
+  IF ("${CACHED_IMLIB}" STREQUAL "YES")
+    SET(IMLIB_FOUND TRUE)
+  ENDIF ("${CACHED_IMLIB}" STREQUAL "YES")
+
+ELSE (DEFINED CACHED_IMLIB)
+
+  # use pkg-config to get the directories and then use these values
+  # in the FIND_PATH() and FIND_LIBRARY() calls
+  INCLUDE(UsePkgConfig)
+  
+  PKGCONFIG(libagg _IMLIBIncDir _IMLIBLinkDir _IMLIBLinkFlags _IMLIBCflags)
+  
+  set(IMLIB_DEFINITIONS ${_IMLIBCflags})
+  
+  FIND_PATH(IMLIB_INCLUDE_DIR Imlib.h
+    ${_IMLIBIncDir}
+    /usr/include
+    /usr/local/include
+  )
+  
+  FIND_LIBRARY(IMLIB_LIBRARIES NAMES Imlib
+    PATHS
+    ${_IMLIBLinkDir}
+    /usr/lib
+    /usr/local/lib
+  )
+  
+  if (IMLIB_INCLUDE_DIR AND IMLIB_LIBRARIES)
+     SET(imlib_found true)
+  endif (IMLIB_INCLUDE_DIR AND IMLIB_LIBRARIES)
+  
+  if (IMLIB_FOUND)
+    set(CACHED_IMLIB "YES")
+    if (NOT IMLIB_FIND_QUIETLY)
+      message(STATUS "Found IMLIB: ${IMLIB_LIBRARIES}")
+    endif (NOT IMLIB_FIND_QUIETLY)
+  else (IMLIB_FOUND)
+    set(CACHED_IMLIB "NO")
+    if (IMLIB_FIND_REQUIRED)
+      message(FATAL_ERROR "Could NOT find IMLIB")
+    endif (IMLIB_FIND_REQUIRED)
+  endif (IMLIB_FOUND)
+  
+  MARK_AS_ADVANCED(IMLIB_INCLUDE_DIR IMLIB_LIBRARIES)
+  
+  set(CACHED_IMLIB ${CACHED_IMLIB} CACHE INTERNAL "If liImlib was checked")
+
+ENDIF (DEFINED CACHED_IMLIB)