File sl.Makefile.patch of Package sl

--- ./Makefile.orig	2018-09-13 16:36:29.861615928 +0900
+++ ./Makefile	2018-11-22 10:34:45.557940496 +0900
@@ -8,12 +8,22 @@
 
 CC=gcc
 CFLAGS=-O -Wall
+PREFIX=/usr
 
 all: sl
 
 sl: sl.c sl.h
 	$(CC) $(CFLAGS) -o sl sl.c -lncurses
 
+install:
+	strip sl
+	install -m 755 sl   $(DESTDIR)$(PREFIX)/bin/
+	install -m 644 sl.1 $(DESTDIR)$(PREFIX)/share/man/man1/
+
+uninstall:
+	rm -f $(DESTDIR)$(PREFIX)/share/man/man1/sl.1*
+	rm -f $(DESTDIR)$(PREFIX)/bin/sl	
+	
 clean:
 	rm -f sl