--- klong/Makefile.orig	2019-10-01 13:06:39.000000000 +0200
+++ klong/Makefile	2020-02-01 21:08:13.020202542 +0100
@@ -1,12 +1,12 @@
 CFLAGS=	-g -Wall -pedantic -O3
-CC=	cc $(CFLAGS)
+CC:=	$(CC) $(CFLAGS)
 V=	20190330
 R=	20190926

 # Modules to load into image file
 OPTIONS=-l nstat -l nplot -l time

-all:	kg klong.image
+all:	kg

 klong.image:	kg
 	./kg -n $(OPTIONS) -o klong.image
@@ -48,3 +48,8 @@

 mksums:	clean
 	find . -type f | grep -v _csums | grep -v klong2015 | csum >_csums
+
+install:
+	install kg ${DESTDIR}/usr/local/bin
+	mkdir -p ${DESTDIR}/usr/local/lib/klong
+	install -m 644 lib/* ${DESTDIR}/usr/local/lib/klong