diff --git a/src/tools/gcc.lua b/src/tools/gcc.lua
index 08786c77..00de4a25 100644
--- a/src/tools/gcc.lua
+++ b/src/tools/gcc.lua
@@ -236,8 +236,20 @@
 
 	gcc.libraryDirectories = {
 		architecture = {
-			x86 = "-L/usr/lib32",
-			x86_64 = "-L/usr/lib64",
+			x86 = function (cfg)
+				local r = {}
+				if cfg.system ~= premake.MACOSX then
+					table.insert (r, "-L/usr/lib32")
+				end
+				return r
+			end,
+			x86_64 = function (cfg)
+				local r = {}
+				if cfg.system ~= premake.MACOSX then
+					table.insert (r, "-L/usr/lib64")
+				end
+				return r
+			end,
 		},
 		system = {
 			wii = "-L$(LIBOGC_LIB)",