Tests/RunCMake/CrosscompilingEmulator/AddCustomCommand-build-check.cmake - third_party/cmake - Git at Google

 foreach(output IN ITEMS output1 output2 output3 output4)
   if(NOT EXISTS "${RunCMake_TEST_BINARY_DIR}/${output}")
     message(FATAL_ERROR "Failed to create output: ${RunCMake_TEST_BINARY_DIR}/${output}")
   endif()
 endforeach()
	foreach(output IN ITEMS output1 output2 output3 output4)
	if(NOT EXISTS "${RunCMake_TEST_BINARY_DIR}/${output}")
	message(FATAL_ERROR "Failed to create output: ${RunCMake_TEST_BINARY_DIR}/${output}")
	endif()
	endforeach()