Tests/RunCMake/File_Configure/AngleBracketsContent.cmake - third_party/github.com/Kitware/CMake - Git at Google

 file(CONFIGURE
     OUTPUT "file.txt"
     CONTENT "foo-$<CONFIG>"
 )
 file(READ ${CMAKE_CURRENT_BINARY_DIR}/file.txt out)
 message("${out}")
	file(CONFIGURE
	OUTPUT "file.txt"
	CONTENT "foo-$<CONFIG>"
	)
	file(READ ${CMAKE_CURRENT_BINARY_DIR}/file.txt out)
	message("${out}")