--- Makefile.orig	2003-06-10 22:26:51.000000000 +0200
+++ Makefile	2014-06-04 13:39:49.442936071 +0200
@@ -5,13 +5,13 @@
 
 # -m386 (486,pentium,pentiumpro)
 #OPTIMIZE=-O7 -mpentiumpro
-OPTIMIZE=-O3
+#OPTIMIZE=-O3
 
 # debug symbols will be stripped anyway during 'make install'
 DEBUG=-g
 
 #### DON'T CHANGE ANYTHING BELOW ####
-DESTDIR=/usr/local
+DESTDIR?=/usr/local
 CFLAGS=-Wall $(OPTIMIZE) $(DEBUG)
 LIBS=-lm
 CC=gcc
@@ -37,9 +37,9 @@
 	$(CC) $(CFLAGS) -c mls_text.c -o mls_text.o
 
 install: mls
-	install -m 755 -g root -o root -s mls $(DESTDIR)/bin
-	install -m 644 -g root -o root mls.1 $(DESTDIR)/man/man1
-	gzip -9f $(DESTDIR)/man/man1/mls.1
+	$(BSD_INSTALL_PROGRAM) mls $(DESTDIR)$(PREFIX)/bin
+	$(BSD_INSTALL_MAN) mls.1 $(DESTDIR)$(PREFIX)/man/man1
+	gzip -9f $(DESTDIR)$(PREFIX)/man/man1/mls.1
 	@echo "**************************************************************"
 	@echo "*** To use HTML feature or PHP wrapper, copy contents of   ***"
 	@echo "*** 'html' subdirectory to location accessible by your     ***"