diff -U 3 -H -d -r -N -- dttools-1_0_4.orig/src/Makefile dttools-1_0_4/src/Makefile
--- dttools-1_0_4.orig/src/Makefile	2002-12-18 17:43:57.000000000 +0100
+++ dttools-1_0_4/src/Makefile	2004-03-16 22:42:08.509142104 +0100
@@ -34,10 +34,10 @@
 	rm -f core *~ *.o *.so libdttools.a make_int_sizes int_sizes.h $(PROGRAMS)
 
 install: all
-	install -d ${INSTALL_DIR}
-	install -d ${INSTALL_DIR}/bin
-	install -d ${INSTALL_DIR}/lib
-	install -d ${INSTALL_DIR}/include
-	for file in ${PROGRAMS} ; do install $$file ${INSTALL_DIR}/bin/$$file ; done
-	for file in ${LIBRARIES} ; do install $$file ${INSTALL_DIR}/lib/$$file ; done
-	for file in ${HEADERS} ; do install $$file ${INSTALL_DIR}/include/$$file ; done
+	install -d ${DESTDIR}
+	install -d ${DESTDIR}/${INSTALL_DIR}/bin
+	install -d ${DESTDIR}/${INSTALL_DIR}/lib
+	install -d ${DESTDIR}/${INSTALL_DIR}/include/dttools
+	for file in ${PROGRAMS} ; do install $$file ${DESTDIR}/${INSTALL_DIR}/bin/$$file ; done
+	for file in ${LIBRARIES} ; do install $$file ${DESTDIR}/${INSTALL_DIR}/lib/$$file ; done
+	for file in ${HEADERS} ; do install $$file ${DESTDIR}/${INSTALL_DIR}/include/dttools/$$file ; done