--- a/Makefile
+++ b/Makefile
@@ -1,15 +1,31 @@
-CFLAGS		+=	-O3 -lbz2
+СС		?=	gcc
+CFLAGS		+=	-O2 -Wall -std=gnu89
+LDFLAGS		+=	-lbz2
+INSTALL		?=	install
 
 PREFIX		?=	/usr/local
-INSTALL_PROGRAM	?=	${INSTALL} -c -s -m 555
-INSTALL_MAN	?=	${INSTALL} -c -m 444
+MANDIR		?=	$(PREFIX)/share/man
 
-all:		bsdiff bspatch
-bsdiff:		bsdiff.c
-bspatch:	bspatch.c
+all: bsdiff bspatch
+	strip -s bsdiff
+	strip -s bspatch
+
+bsdiff: bsdiff.c
+	$(CC) $(CFLAGS) $< $(LDFLAGS) -o $@
+
+bspatch: bspatch.c
+	$(CC) $(CFLAGS) $< $(LDFLAGS) -o $@
 
 install:
-	${INSTALL_PROGRAM} bsdiff bspatch ${PREFIX}/bin
-.ifndef WITHOUT_MAN
-	${INSTALL_MAN} bsdiff.1 bspatch.1 ${PREFIX}/man/man1
-.endif
+	$(INSTALL) -Dpm 0755 bsdiff $(DESTDIR)$(PREFIX)/bin/bsdiff
+	$(INSTALL) -Dpm 0755 bspatch $(DESTDIR)$(PREFIX)/bin/bspatch
+ifndef WITHOUT_MAN
+	$(INSTALL) -Dpm 0644 bsdiff.1 $(DESTDIR)$(MANDIR)/man1/bsdiff.1
+	$(INSTALL) -Dpm 0644 bspatch.1 $(DESTDIR)$(MANDIR)/man1/bspatch.1
+endif
+
+uninstall:
+	rm -fv $(DESTDIR)$(MANDIR)/bin/bsdiff
+	rm -fv $(DESTDIR)$(MANDIR)/bin/bspatch
+	rm -fv $(DESTDIR)$(MANDIR)/man1/bsdiff.1
+	rm -fv $(DESTDIR)$(MANDIR)/man1/bspatch.1