CMAKE_<LANG>_FLAGS_RELWITHDEBINFO_INIT

Value used to initialize the CMAKE_<LANG>_FLAGS_RELWITHDEBINFO cache entry the first time a build tree is configured for language <LANG>. This variable is meant to be set by a toolchain file. CMake may prepend or append content to the value based on the environment and target platform.

See also CMAKE_<LANG>_FLAGS_INIT.