# HG changeset patch
# User Rob Landley <rob@landley.net>
# Date 1212617872 18000
# Node ID c468353dd75b588fafae3eeaaac84c301fd57170
# Parent  66d43620e29f80cf637a126f4e45b2fe9ef500e1
More about building older versions.

diff -r 66d43620e29f -r c468353dd75b www/downloads/README
--- a/www/downloads/README	Sun Jun 01 13:50:43 2008 -0500
+++ b/www/downloads/README	Wed Jun 04 17:17:52 2008 -0500
@@ -15,6 +15,16 @@
   Other Linux distributions do not exhibit this bug.  (Even MacOS X has
   /bin/sh point to bash, despite using a different login shell by default.)
 
+  Also note that User Mode Linux 2.6.20 and earlier no longer build on a modern
+  system because the field aio_reserved3 went away in /usr/include.  (Yes, the
+  API exported to userspace, as used by Linux itself, is unstable.)  Attempts
+  to build older FWL versions need to either fix that, or skip building UML.
+
+  The oldest version that builds unmodified on an ubuntu 7.10 system is
+  FWL 0.3.0.  You can also install an older distro under qemu, and build the
+  older versions under that.  The Red Hat 9 image available from
+  http://busybox.net/downloads/qemu should build all the versions before 0.3.0.
+
 Contents of the Firmware Linux download directory.
 --------------------------------------------------