X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.git;a=blobdiff_plain;f=common.make.in;fp=common.make.in;h=5e0e80b32a0ae43ef6bce75b330489f4522a0de1;hp=46add1c3585b5d74a57cccdb76224bf94b208288;hb=489381f9e19e486dd28d2a59631f6cbbfd670db0;hpb=ab9603b004ef2bfd1c3450b915320b45a07f58c8

diff --git a/common.make.in b/common.make.in
index 46add1c..5e0e80b 100644
--- a/common.make.in
+++ b/common.make.in
@@ -45,11 +45,22 @@ MKSHLIB_1=	@MKSHLIB_1@
 MKSHLIB_2=	@MKSHLIB_2@
 MKSHLIB_3=	@MKSHLIB_3@
 
-prefix=		@prefix@
-exec_prefix=	@exec_prefix@
-bindir=		@bindir@
-libdir=		@libdir@
-includedir=	@includedir@
+prefix		:= @prefix@
+exec_prefix	:= @exec_prefix@
+bindir		:= @bindir@
+libdir		:= @libdir@
+includedir	:= @includedir@
+
+ifneq ($(DESTDIR),)
+# autoconf likes to define some of these in terms of each other
+# so if we want to add a prefix to each one we have to do it this way:
+destdir_prefix=$(DESTDIR)/
+prefix		:= ${destdir_prefix}${prefix}
+exec_prefix	:= ${destdir_prefix}${exec_prefix}
+bindir		:= ${destdir_prefix}${bindir}
+libdir		:= ${destdir_prefix}${libdir}
+includedir	:= ${destdir_prefix}${includedir}
+endif
 
 AC_INSTALL=	@INSTALL@
 ifeq ($(AC_INSTALL),./install-sh -c)