diff -ru tools-20070815.orig/lib/Makefile tools-20070815/lib/Makefile
--- tools-20070815.orig/lib/Makefile	2006-02-15 18:04:44.000000000 +0100
+++ tools-20070815/lib/Makefile	2018-10-14 16:14:53.694209536 +0200
@@ -1,6 +1,6 @@
 LIB = libuml.a
 OBJS = rights.o
-CFLAGS = -g -Wall
+CFLAGS ?= -g -Wall
 
 all : $(LIB)
 
diff -ru tools-20070815.orig/Makefile tools-20070815/Makefile
--- tools-20070815.orig/Makefile	2006-02-27 20:38:55.000000000 +0100
+++ tools-20070815/Makefile	2018-10-14 16:14:53.694209536 +0200
@@ -6,13 +6,9 @@
 TARBALL = uml_utilities_$(UMLVER).tar.bz2
 BIN_DIR = /usr/bin
 
-ifeq ($(shell uname -m),x86_64)
-LIB_DIR = /usr/lib64/uml
-else
 LIB_DIR = /usr/lib/uml
-endif
 
-CFLAGS = -g -Wall
+CFLAGS ?= -g -Wall
 #CFLAGS = -g -O2 -Wall
 
 export BIN_DIR LIB_DIR CFLAGS
diff -ru tools-20070815.orig/umlfs/Makefile tools-20070815/umlfs/Makefile
--- tools-20070815.orig/umlfs/Makefile	2006-02-27 22:11:25.000000000 +0100
+++ tools-20070815/umlfs/Makefile	2018-10-14 16:19:31.607958547 +0200
@@ -1,7 +1,8 @@
 BIN = uml_mount
 OBJS = $(BIN).o
 # I have the FUSE headers in /usr/local/include
-CFLAGS = -g -Wall -D_FILE_OFFSET_BITS=64 -I/usr/local/include
+CFLAGS ?= -g -Wall -I/usr/local/include
+CFLAGS += -D_FILE_OFFSET_BITS=64
 LIBS = -lfuse
 
 BIN_DIR ?= /usr/bin
diff -ru tools-20070815.orig/uml_net/host.c tools-20070815/uml_net/host.c
--- tools-20070815.orig/uml_net/host.c	2006-02-27 21:19:52.000000000 +0100
+++ tools-20070815/uml_net/host.c	2018-10-14 16:14:53.694209536 +0200
@@ -10,6 +10,7 @@
 #include <ctype.h>
 #include <sys/wait.h>
 #include <sys/stat.h>
+#include <sys/sysmacros.h>
 #include "output.h"
 #include "host.h"