Give requided addinional system libraries (as given to LD_LIBS)

Note: can return null instead of an empty set

Property definitions

nitc :: abstract_compiler $ MModule :: collect_linker_libs
	# Give requided addinional system libraries (as given to LD_LIBS)
	# Note: can return null instead of an empty set
	fun collect_linker_libs: nullable Array[String] do return null
src/compiler/abstract_compiler.nit:4656,2--4658,63

nitc :: light $ MModule :: collect_linker_libs
	redef fun collect_linker_libs
	do
		if not self.ldflags.keys.has("") then return null
		return self.ldflags[""]
	end
src/compiler/compiler_ffi/light.nit:76,2--80,4