Don't cache {C,CXX} flags, this file is parsed twice, the first time

CMAKE_SIZEOF_VOID_P is unset so the variables are set incorrectly.

cmake/build_configurations/mysql_release.cmake

@@ -204,19 +204,13 @@ IF(UNIX)
     ENDIF()
   ENDIF()
 
-  SET(CMAKE_CXX_FLAGS_RELEASE "${OPT_FLG} ${COMMON_CXXFLAGS}"
-    CACHE STRING "Release type C++ compiler flags")
-  SET(CMAKE_C_FLAGS_RELEASE "${OPT_FLG} ${COMMON_CFLAGS}"
-    CACHE STRING "Release type C compile flags")
-
-  SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${OPT_FLG} ${COMMON_CXXFLAGS}"
-    CACHE STRING "Default/RelWithDebInfo type C++ compiler flags")
-  SET(CMAKE_C_FLAGS_RELWITHDEBINFO "${OPT_FLG} ${COMMON_CFLAGS}"
-    CACHE STRING "Default/RelWithDebInfo type C compiler flags")
-
-  SET(CMAKE_CXX_FLAGS_DEBUG "${DBG_FLG} ${COMMON_CXXFLAGS}"
-    CACHE STRING "Debug type C++ compiler flags")
-  SET(CMAKE_C_FLAGS_DEBUG "${DBG_FLG} ${COMMON_CFLAGS}"
-    CACHE STRING "Debug type C compiler flags")
+  SET(CMAKE_CXX_FLAGS_RELEASE "${OPT_FLG} ${COMMON_CXXFLAGS}")
+  SET(CMAKE_C_FLAGS_RELEASE "${OPT_FLG} ${COMMON_CFLAGS}")
+
+  SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${OPT_FLG} ${COMMON_CXXFLAGS}")
+  SET(CMAKE_C_FLAGS_RELWITHDEBINFO "${OPT_FLG} ${COMMON_CFLAGS}")
+
+  SET(CMAKE_CXX_FLAGS_DEBUG "${DBG_FLG} ${COMMON_CXXFLAGS}")
+  SET(CMAKE_C_FLAGS_DEBUG "${DBG_FLG} ${COMMON_CFLAGS}")
 
 ENDIF()