$NetBSD: patch-Makefile,v 1.2 2022/08/19 01:01:29 tnn Exp $

support DESTDIR installation properly

--- Makefile.orig	2020-12-30 18:17:52.000000000 +0000
+++ Makefile
@@ -23,9 +23,9 @@ CFLAGS+=-DCOLOR -O -std=c99
 
 # On Solaris, you may need to use 'gmake', or edit the next line.
 INSTALL = install -d -m 644
-PREFIX ?= $(DESTDIR)/usr
-BINDIR=$(PREFIX)/bin/local
-MANDIR=$(PREFIX)/share/man/man1
+PREFIX ?= /usr
+BINDIR?=$(PREFIX)/bin
+MANDIR?=$(PREFIX)/share/man/man1
 
 INCLUDES=defs.h extern.h misc.h tifftags.h exiftags.h \
 	tiffeptags.h jpegtags.h global.h
@@ -71,12 +71,12 @@ exifprobe: $(OBJS) $(INCLUDES) Makefile
 	$(CC) -o exifprobe $(CFLAGS) $(LDFLAGS) $(CPPFLAGS) $(OBJS) comptime.c -lm
 
 install: all
-	install -d $(PREFIX)/bin
-	install -d $(PREFIX)/share/man/man1
-	install -c -m 755 exifprobe $(PREFIX)/bin
-	install -c -m 755 exifgrep $(PREFIX)/bin
-	install -c -m 644  exifprobe.1 $(PREFIX)/share/man/man1
-	install -c -m 644  exifgrep.1 $(PREFIX)/share/man/man1
+	install -d $(DESTDIR)$(BINDIR)
+	install -d $(DESTDIR)$(MANDIR)
+	install -c -m 755 exifprobe $(DESTDIR)$(BINDIR)
+	install -c -m 755 exifgrep $(DESTDIR)$(BINDIR)
+	install -c -m 644  exifprobe.1 $(DESTDIR)$(MANDIR)
+	install -c -m 644  exifgrep.1 $(DESTDIR)$(MANDIR)
 
 # if you want HTML man pages, pick a target; I prefer man2html
 rman: exifprobe.1 exifgrep.1