$OpenBSD: patch-src_Makefile,v 1.4 2017/12/26 06:12:16 jca Exp $
Index: src/Makefile
--- src/Makefile.orig
+++ src/Makefile
@@ -10,7 +10,7 @@
 include ../config.mk
 
 CFLAGS+=`pkg-config --cflags gtk+-2.0` `pkg-config --cflags gdk-pixbuf-2.0`
-LDFLAGS+=`pkg-config --libs gtk+-2.0` `pkg-config --libs gdk-pixbuf-2.0`
+LDFLAGS+=`pkg-config --libs gtk+-2.0` `pkg-config --libs gdk-pixbuf-2.0` -lm
 
 all: xzgv
 
@@ -28,9 +28,8 @@ xzgv: $(OBJS)
 installdirs:
 	/bin/sh ../mkinstalldirs $(BINDIR)
 
-install: xzgv installdirs
-	install xzgv $(BINDIR)
-	chmod 755 $(BINDIR)/xzgv
+install: xzgv
+	$(BSD_INSTALL_PROGRAM) xzgv $(BINDIR)
 
 uninstall:
 	$(RM) $(BINDIR)/xzgv