Merge pull request open-source-parsers#382 from cdunn2001/ccache

Support ccache

Author: cdunn2001

CMakeLists.txt

@@ -104,6 +104,12 @@ elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
   # not yet ready for -Wsign-conversion
 endif()
 
+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)
+
 IF(JSONCPP_WITH_WARNING_AS_ERROR)
     UseCompilationWarningAsError()
 ENDIF()