Tests/RunCMake/export/EmptyNamespace.cmake - third_party/github.com/Kitware/CMake - Git at Google

 add_library(foo INTERFACE)
 install(TARGETS foo EXPORT foo)

 # Ensure we can export with an explicitly-empty namespace.
 export(EXPORT foo NAMESPACE "")
	add_library(foo INTERFACE)
	install(TARGETS foo EXPORT foo)

	# Ensure we can export with an explicitly-empty namespace.
	export(EXPORT foo NAMESPACE "")