Add DESTDIR, distinct from PREFIX, to Makefile

Author: ddevault

Makefile

@@ -1,14 +1,15 @@
 PREFIX:=/usr/
+DESTDIR:=/usr/
 .PHONY: install
 
 install:
-	mkdir -p $(PREFIX)bin/
-	mkdir -p $(PREFIX)knightos-sdk/templates/
-	install -c -m 775 *.py $(PREFIX)knightos-sdk/
-	install -c -m 775 templates/* $(PREFIX)knightos-sdk/templates/
-	echo -ne "#!/bin/sh\n/usr/bin/env python3 $(PREFIX)knightos-sdk/main.py \$$*" > $(PREFIX)bin/knightos
-	chmod +x $(PREFIX)bin/knightos
+	mkdir -p $(DESTDIR)bin/
+	mkdir -p $(DESTDIR)knightos-sdk/templates/
+	install -c -m 775 *.py $(DESTDIR)knightos-sdk/
+	install -c -m 775 templates/* $(DESTDIR)knightos-sdk/templates/
+	echo -ne "#!/bin/sh\n/usr/bin/env python3 $(PREFIX)knightos-sdk/main.py \$$*" > $(DESTDIR)bin/knightos
+	chmod +x $(DESTDIR)bin/knightos
 
 uninstall:
-	rm $(PREFIX)bin/knightos
-	rm -rf $(PREFIX)knightos-sdk
+	rm $(DESTDIR)bin/knightos
+	rm -rf $(DESTDIR)knightos-sdk