Tests/RunCMake/GeneratorExpressionShortCircuit/GoodIF.cmake - external/github.com/Kitware/CMake - Git at Google

 set(error $<0>)
 add_custom_target(check ALL
   COMMAND check $<IF:1,1,${error}>
   COMMAND Check $<IF:0,${error},1>
 )
	set(error $<0>)
	add_custom_target(check ALL
	COMMAND check $<IF:1,1,${error}>
	COMMAND Check $<IF:0,${error},1>
	)