Fix Makefile linking to object files

src/tools/gcc.lua

@@ -236,14 +236,14 @@
 		end
 
 		-- The "-l" flag is fine for system libraries
-		links = config.getlinks(cfg, "system", "name")
+		links = config.getlinks(cfg, "system", "fullpath")
 		for _, link in ipairs(links) do
 			if path.isframework(link) then
 				table.insert(result, "-framework " .. path.getbasename(link))
 			elseif path.isobjectfile(link) then
 				table.insert(result, link)
 			else
-				table.insert(result, "-l" .. link)
+				table.insert(result, "-l" .. path.getbasename(link))
 			end
 		end
 

tests/tools/test_gcc.lua

@@ -262,6 +262,31 @@
 	end
 
 
+--
+-- If the object file is referenced with a path, it should be
+-- made relative to the project.
+--
+
+	function suite.links_onObjectFileOutsideProject()
+		location "MyProject"
+		links { "obj/Debug/generated.o" }
+		prepare()
+		test.isequal({ "../obj/Debug/generated.o" }, gcc.getlinks(cfg))
+	end
+
+
+--
+-- Make sure shell variables are kept intact for object file paths.
+--
+
+	function suite.links_onObjectFileWithShellVar()
+		location "MyProject"
+		links { "$(IntDir)/generated.o" }
+		prepare()
+		test.isequal({ "$(IntDir)/generated.o" }, gcc.getlinks(cfg))
+	end
+
+
 --
 -- Include directories should be made project relative.
 --