Tests/RunCMake/project/VersionEmpty.cmake - third_party/github.com/Kitware/CMake - Git at Google

 set(PROJECT_VERSION 1)
 project(ProjectA VERSION "" LANGUAGES NONE)
 get_property(langs GLOBAL PROPERTY ENABLED_LANGUAGES)
 message(STATUS "ENABLED_LANGUAGES='${langs}'")
 message(STATUS "PROJECT_VERSION='${PROJECT_VERSION}'")
	set(PROJECT_VERSION 1)
	project(ProjectA VERSION "" LANGUAGES NONE)
	get_property(langs GLOBAL PROPERTY ENABLED_LANGUAGES)
	message(STATUS "ENABLED_LANGUAGES='${langs}'")
	message(STATUS "PROJECT_VERSION='${PROJECT_VERSION}'")