$NetBSD: patch-src_build-data_makefile_header.in,v 1.1 2014/02/24 20:49:14 joerg Exp $

--- src/build-data/makefile/header.in.orig	2014-02-24 21:22:30.086425663 +0100
+++ src/build-data/makefile/header.in	2014-02-24 21:22:48.658425876 +0100
@@ -21,11 +21,11 @@
 BRANCH         = %{version_major}.%{version_minor}
 
 # Installation Settings
-DESTDIR        = %{destdir}
-BINDIR         = $(DESTDIR)/bin
-LIBDIR         = $(DESTDIR)/%{libdir}
-HEADERDIR      = $(DESTDIR)/%{includedir}/botan-$(BRANCH)/botan
-DOCDIR         = $(DESTDIR)/%{docdir}/botan-$(VERSION)
+PREFIX         = ${DESTDIR}%{destdir}
+BINDIR         = $(PREFIX)/bin
+LIBDIR         = $(PREFIX)/%{libdir}
+HEADERDIR      = $(PREFIX)/%{includedir}/botan-$(BRANCH)/botan
+DOCDIR         = $(PREFIX)/%{docdir}/botan-$(VERSION)
 PKGCONF_DIR    = $(LIBDIR)/pkgconfig
 
 CONFIG_SCRIPT = %{botan_config}