Tests/RunCMake/try_run/NoCompileOutputVariable.cmake - third_party/github.com/Kitware/CMake - Git at Google

 include(${CMAKE_CURRENT_SOURCE_DIR}/${try_compile_DEFS})

 try_run(RUN_RESULT COMPILE_RESULT ${try_compile_bindir_or_SOURCES}
   ${CMAKE_CURRENT_SOURCE_DIR}/src.c
   COMPILE_OUTPUT_VARIABLE
   )
	include(${CMAKE_CURRENT_SOURCE_DIR}/${try_compile_DEFS})

	try_run(RUN_RESULT COMPILE_RESULT ${try_compile_bindir_or_SOURCES}
	${CMAKE_CURRENT_SOURCE_DIR}/src.c
	COMPILE_OUTPUT_VARIABLE
	)