Added ifndef ARDUINO_VAR_PATH for compiling for the attiny

HISTORY.md

@@ -6,6 +6,7 @@ The following is the rough list of changes that went into different versions. I
 ### 0.10.5 (in development)
 - Add USB_VID and USB_PID to CPPFLAGS only if the board is Leonardo.
 - Allow adding extra common dependencies (COMMON_DEPS) (https://github.com/gaftech)
+- Added ifndef ARDUINO_VAR_PATH for compiling for the attiny (https://github.com/danielesteban)
 
 ### 0.10.4 (2013-05-31) @matthijskooijman
 - Improved BAUD_RATE detection logic

arduino-mk/Arduino.mk

@@ -303,7 +303,13 @@ ifdef ARDUINO_DIR
     ARDUINO_LIB_PATH  = $(ARDUINO_DIR)/libraries
     $(call show_config_variable,ARDUINO_LIB_PATH,[COMPUTED],(from ARDUINO_DIR))
     ARDUINO_CORE_PATH = $(ARDUINO_DIR)/hardware/arduino/cores/arduino
+
+	ifndef ARDUINO_VAR_PATH
 		ARDUINO_VAR_PATH  = $(ARDUINO_DIR)/hardware/arduino/variants
+		$(call show_config_variable,ARDUINO_VAR_PATH,[COMPUTED],(from ARDUINO_DIR))
+	else
+		$(call show_config_variable,ARDUINO_VAR_PATH,[USER])
+	endif
 
 else