--- base/runtime/objs/makefile.orig	2012-04-18 02:28:08.000000000 +0200
+++ base/runtime/objs/makefile	2014-06-30 20:25:38.000000000 +0200
@@ -5,10 +5,10 @@
 
 SHELL =		/bin/sh
 MAKE =		make
-CC =		cc
-CPP =		/lib/cpp
+CC ?=		cc
+CPP ?=		/lib/cpp
 LD_LIBS =
-AS =		as
+AS ?=		as
 AR =		ar
 ARFLAGS =	rcv
 RANLIB =	ranlib
@@ -38,7 +38,7 @@
 CLIB_DIR =	$(ROOT_DIR)/c-libs
 CONFIG_DIR =	$(ROOT_DIR)/config
 
-CFLAGS =	-O
+CFLAGS ?=	-O
 
 INCLUDES =	-I$(OBJS_DIR) -I$(INC_DIR)
 GC_INCLUDES =	$(INCLUDES) -I$(GC_DIR)
@@ -329,7 +329,7 @@
 #
 MK_ARGS =		VERSION="$(VERSION)" \
 			MAKE="$(MAKE)" \
-			CC="$(CC)" CFLAGS="$(CFLAGS)" DEFS="$(DEFS)" \
+			CC="$(CC)" CFLAGS="$(CFLAGS)" DEFS='$(DEFS)' \
 			AR="$(AR)" ARFLAGS="$(ARFLAGS)" \
 			RANLIB="$(RANLIB)" \
 			INCLUDES="$(GC_INCLUDES) -I../bytecode"
@@ -420,7 +420,7 @@
 #
 LIB_MK_ARGS =		VERSION="$(VERSION)" \
 			MAKE="$(MAKE)" \
-			CC="$(CC)" CFLAGS="$(CFLAGS)" DEFS="$(DEFS)" \
+			CC="$(CC)" CFLAGS="$(CFLAGS)" DEFS='$(DEFS)' \
 			AR="$(AR)" ARFLAGS="$(ARFLAGS)" \
 			RANLIB="$(RANLIB)" \
 			INCLUDES="$(LIB_INCLUDES)"