The ubi_* modules are under LGPL, not standard GPL. This README explains

that.
(This used to be commit bc2834c2cc7bda0c1e780d160a73c8b71bfe467f)

diff --git a/README.UBI b/README.UBI
new file mode 100644 (file)
index 0000000..c4a69e4
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+++ b/README.UBI
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+Thu Oct 16 11:07:18 CDT 1997
+
+Files in the source directory which begin with the prefix "ubi_" are
+licensed under the terms of the GNU LIBRARY GENERAL PUBLIC LICENSE
+(LGPL).  A copy of the LGPL should also be included in this directory
+under the name COPYING.LGPL.  If this file is not present, you can
+obtain a copy of the LGPL by writing to the Free Software Foundation,
+Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+See http://www.interads.co.uk/~crh/ubiqx/ for additional available
+modules.
+
+Chris Hertel
+Samba Team
+samba-bugs@samba.anu.edu.au