What do I have to do to change the PATH in Windows?

Author: hackerb9

Makefile

@@ -23,7 +23,7 @@ debug : all
 flex := flex
 ifeq (${OS},Windows_NT)
 	export PATH := ${PATH}:"/c/Program Files/Git/usr/bin"
-	$(info which ${CC})
+	$(info $(shell which ${CC}))
 	flex := win_flex
 endif