1 files changed, 6 insertions, 0 deletions
diff --git a/Arduino.mk b/Arduino.mk
index a352628..42dfef0 100644
--- a/Arduino.mk
+++ b/Arduino.mk
@@ -279,6 +279,12 @@ else
     $(call show_config_variable,ARDUINO_DIR,[USER])
 endif
 
+ifeq ($(CURRENT_OS),WINDOWS)
+    ifneq ($(shell echo $(ARDUINO_DIR) | egrep '^(/|[a-zA-Z]:\\)'),)
+        echo $(error On Windows, ARDUINO_DIR must be a relative path)
+    endif
+endif
+
 ########################################################################
 # Default TARGET to pwd (ex Daniele Vergini)