Check if AVR Toolchain exits in the PATH

Author: enekochan

Makefile.common

@@ -48,9 +48,7 @@ CORE_CFLAGS	= -DAVR_CORE=1
 ifeq (${shell uname}, Darwin)
  # If AVR Toolchain was installed from Microchip binaries
  ifneq (, $(shell which avr-gcc))
-  CC			= clang
-  AVR_ROOT 	:= $(shell which avr-gcc | awk -F'bin/' '{ print $$1 }')
-  AVR 		:= ${AVR_ROOT}/bin/avr-
+  AVR 		:= avr-
  else
   # gcc 4.2 from MacOS is really not up to scratch anymore
   CC			= clang