--- plugins/audio/SILK/SILK_SDK/Makefile.orig	2013-09-17 11:51:45.000000000 +0200
+++ plugins/audio/SILK/SILK_SDK/Makefile	2013-09-17 11:55:40.000000000 +0200
@@ -16,10 +16,10 @@
 LIBSUFFIX = .a
 OBJSUFFIX = .o
 
-CC     = $(TOOLCHAIN_PREFIX)gcc$(TOOLCHAIN_SUFFIX)
-AR     = $(TOOLCHAIN_PREFIX)ar
-RANLIB = $(TOOLCHAIN_PREFIX)ranlib
-CP     = $(TOOLCHAIN_PREFIX)cp
+CC     ?= $(TOOLCHAIN_PREFIX)gcc$(TOOLCHAIN_SUFFIX)
+AR     ?= $(TOOLCHAIN_PREFIX)ar
+RANLIB ?= $(TOOLCHAIN_PREFIX)ranlib
+CP     ?= $(TOOLCHAIN_PREFIX)cp
 
 cflags-from-defines    = $(addprefix -D,$(1))
 cflags-from-includes   = $(addprefix -I,$(1))