Use 7zip on Windows

Author: karbassi

Makefile

@@ -10,6 +10,12 @@ INSTALL_DATA = $(INSTALL) -m 644
 
 prefix = /usr/local
 
+ifeq ($(OS), Windows_NT)
+	ZIP_PROGRAM=7zip
+else
+	ZIP_PROGRAM=zip
+endif
+
 # ifdef check allows the user to pass custom dirs
 # as per the README
 
@@ -54,7 +60,7 @@ dist: $(DISTFILES) todo.sh
 	chmod +x "$(DISTNAME)/todo.sh"
 	tar cf $(DISTNAME).tar "$(DISTNAME)"
 	gzip -f -9 "$(DISTNAME).tar"
-	zip -r -9 "$(DISTNAME).zip" "$(DISTNAME)"
+	$(ZIP_PROGRAM) -r -9 "$(DISTNAME).zip" "$(DISTNAME)"
 	rm -r "$(DISTNAME)"
 
 .PHONY: clean