use ccache if available

Author: markos

CMakeLists.txt

@@ -35,6 +35,13 @@ if(${RAGEL} STREQUAL "RAGEL-NOTFOUND")
     message(FATAL_ERROR "Ragel state machine compiler not found")
 endif()
 
+# Add ccache to speed builds
+find_program(CCACHE_FOUND ccache)
+if(CCACHE_FOUND)
+    set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)
+    set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ccache)
+endif(CCACHE_FOUND)
+
 # Build type check
 
 if (NOT CMAKE_BUILD_TYPE)