[legal] Add support for the Unmodified Binary Distribution Licence

Add the text for the Unmodified Binary Distribution Licence.  This
Licence allows for the distribution of unmodified binaries built from
publicly available source code, without imposing the obligations of
the GNU General Public License upon anyone who chooses to distribute
only the unmodified binaries built from that source code.  See the
licence text for the precise terms and conditions.

Add the licence GPL2_OR_LATER_OR_UBDL to the set of licences which can
be declared using FILE_LICENCE(), and add the corresponding support to
licence.pl.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/include/compiler.h b/src/include/compiler.h
index 3f5c913a..611c5a23 100644
--- a/src/include/compiler.h
+++ b/src/include/compiler.h
@@ -730,6 +730,17 @@ int __debug_disable;
 #define FILE_LICENCE_MIT \
 	PROVIDE_SYMBOL ( PREFIX_OBJECT ( __licence__mit__ ) )
 
+/** Declare a file as being under GPLv2+ or UBDL
+ *
+ * This licence declaration is applicable when a file states itself to
+ * be licensed under the GNU GPL; "either version 2 of the License, or
+ * (at your option) any later version" and also states that it may be
+ * distributed under the terms of the Unmodified Binary Distribution
+ * Licence (as given in the file COPYING.UBDL).
+ */
+#define FILE_LICENCE_GPL2_OR_LATER_OR_UBDL \
+	PROVIDE_SYMBOL ( PREFIX_OBJECT ( __licence__gpl2_or_later_or_ubdl__ ) )
+
 /** Declare a particular licence as applying to a file */
 #define FILE_LICENCE( _licence ) FILE_LICENCE_ ## _licence