Update versionnumber to 4.0
diff --git a/README-linux b/README-linux
index 584d565..0cb10d1 100644
--- a/README-linux
+++ b/README-linux
@@ -9,13 +9,12 @@
different from the structures that the C library uses. Currently
you will need a 2.2.7 or newer kernel.
-To compile strace using your kernel source you need to tell make where
-you put the sources. For example if you have your kernelsource in
-/usr/src/linux, you should invoke make like this:
+There are two ways to do this:
+* you can link /usr/include/linux and /usr/include/asm to the corresponding
+ directories in your kernel source-tree.
+
+* you can tell make where your kernel sources are. For example if you have your
+ kernelsource in /usr/src/linux, you should invoke make like this:
make CFLAGS=-I/usr/src/linux/include
-Please note that it is possible to symlink /usr/include/{asm,linux,scsi}
-to your kernel source, but for programs that don't need the actual kernel
-structures that is highly discouraged.
-