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+compiler_flags
+-----------------
+
+* The :variable:`CMAKE_<LANG>_COMPILER` variable may now be used to
+ store "mandatory" compiler flags like the :envvar:`CC` and other environment variables.
+
+* The :variable:`CMAKE_<LANG>_FLAGS_INIT` variable will now be considered during
+ the compiler indentification check if other sources like :variable:`CMAKE_<LANG>_FLAGS`
+ or :envvar:`CFLAGS` are not set.