Only in gawk-3.1.8+dfsg.original/: awkgram.c
diff -ur gawk-3.1.8+dfsg.original/debian/changelog gawk-3.1.8+dfsg/debian/changelog
--- gawk-3.1.8+dfsg.original/debian/changelog	2012-03-27 17:32:14.000000000 +0000
+++ gawk-3.1.8+dfsg/debian/changelog	2012-03-28 16:38:59.000000000 +0000
@@ -1,3 +1,9 @@
+gawk (1:3.1.8+dfsg-0.1ubuntu1) precise; urgency=low
+
+  * Add multiarch metadata to ensure build-dep satisfaction (LP: #967301)
+
+ -- Wookey <wookey@wookware.org>  Wed, 28 Mar 2012 16:35:04 +0000
+
 gawk (1:3.1.8+dfsg-0.1build1) oneiric; urgency=low
 
   * No-change rebuild to pick up libsigsegv2 symbols fix.
diff -ur gawk-3.1.8+dfsg.original/debian/control gawk-3.1.8+dfsg/debian/control
--- gawk-3.1.8+dfsg.original/debian/control	2012-03-28 16:39:06.000000000 +0000
+++ gawk-3.1.8+dfsg/debian/control	2012-03-27 17:33:35.000000000 +0000
@@ -2,8 +2,7 @@
 Section: interpreters
 Priority: optional
 Build-Depends: debhelper (>= 7), quilt (>= 0.40), gettext, bison, libsigsegv-dev
-Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
-XSBC-Original-Maintainer: Arthur Loiret <aloiret@debian.org>
+Maintainer: Arthur Loiret <aloiret@debian.org>
 Standards-Version: 3.8.4
 Homepage: http://www.gnu.org/software/gawk/
 
@@ -12,6 +11,7 @@
 Provides: awk
 Pre-Depends: ${shlibs:Depends}
 Depends: ${misc:Depends}
+Multi-Arch: foreign
 Description: GNU awk, a pattern scanning and processing language
  `awk', a program that you can use to select particular records in a
  file and perform operations upon them.