Merge pull request #220 from barracuda156/macos

Makevars.in: fix a linker flag for TBB_LIB

Author: kevinushey

src/Makevars.in

@@ -13,7 +13,7 @@ endif
 
 # If TBB_LIB is defined, link to that explicitly.
 ifdef TBB_LIB
-	PKG_LIBS = -Wl,-L,"$(TBB_LIB)" -Wl,-rpath,"$(TBB_LIB)" -ltbb -ltbbmalloc
+	PKG_LIBS = -Wl,-L"$(TBB_LIB)" -Wl,-rpath,"$(TBB_LIB)" -ltbb -ltbbmalloc
 endif
 
 ifeq ($(OS), Windows_NT)