RC: Add missing CMAKE_RC_FLAGS_<CONFIG> entries to cache

Modules/CMakeRCInformation.cmake

@@ -17,11 +17,26 @@ set(CMAKE_SYSTEM_AND_RC_COMPILER_INFO_FILE
   ${CMAKE_ROOT}/Modules/Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_BASE_NAME}.cmake)
 include(Platform/${CMAKE_SYSTEM_NAME}-${CMAKE_BASE_NAME} OPTIONAL)
 
-string(STRIP "$ENV{RCFLAGS} ${CMAKE_RC_FLAGS_INIT}" CMAKE_RC_FLAGS_INIT)
+set(CMAKE_RC_FLAGS_INIT "$ENV{RCFLAGS} ${CMAKE_RC_FLAGS_INIT}")
+
+foreach(c "" _DEBUG _RELEASE _MINSIZEREL _RELWITHDEBINFO)
+  string(STRIP "${CMAKE_RC_FLAGS${c}_INIT}" CMAKE_RC_FLAGS${c}_INIT)
+endforeach()
 
 set (CMAKE_RC_FLAGS "${CMAKE_RC_FLAGS_INIT}" CACHE STRING
      "Flags for Windows Resource Compiler.")
 
+if(NOT CMAKE_NOT_USING_CONFIG_FLAGS)
+  set (CMAKE_RC_FLAGS_DEBUG "${CMAKE_RC_FLAGS_DEBUG_INIT}" CACHE STRING
+    "Flags for Windows Resource Compiler during debug builds.")
+  set (CMAKE_RC_FLAGS_MINSIZEREL "${CMAKE_RC_FLAGS_MINSIZEREL_INIT}" CACHE STRING
+    "Flags for Windows Resource Compiler during release builds for minimum size.")
+  set (CMAKE_RC_FLAGS_RELEASE "${CMAKE_RC_FLAGS_RELEASE_INIT}" CACHE STRING
+    "Flags for Windows Resource Compiler during release builds.")
+  set (CMAKE_RC_FLAGS_RELWITHDEBINFO "${CMAKE_RC_FLAGS_RELWITHDEBINFO_INIT}" CACHE STRING
+    "Flags for Windows Resource Compiler during release builds with debug info.")
+endif()
+
 # These are the only types of flags that should be passed to the rc
 # command, if COMPILE_FLAGS is used on a target this will be used
 # to filter out any other flags