heimdal: add patch to use an available libcom_err provided by the system when cross-compiling

security/heimdal/use-external-com_err.patch.cross

@@ -0,0 +1,34 @@
+# --- SDE-COPYRIGHT-NOTE-BEGIN ---
+# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
+#
+# Filename: package/.../heimdal/use-external-com_err.patch.cross
+# Copyright (C) 2014 The OpenSDE Project
+#
+# More information can be found in the files COPYING and README.
+#
+# This patch file is dual-licensed. It is available under the license the
+# patched project is licensed under, as long as it is an OpenSource license
+# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
+# of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+# --- SDE-COPYRIGHT-NOTE-END ---
+
+The default behavior is to always use internal libcom_err when
+cross-compiling, which is not what we want when we already have
+libcom_err cross-compiled and installed.
+
+This patch changes the behavior, to always test for a working
+libcom_err when a compile_et command was found in the toolchain.
+
+--- a/cf/check-compile-et.m4	2014-03-13 19:02:24.232109566 +0100
++++ b/cf/check-compile-et.m4	2014-03-13 19:08:19.444340911 +0100
+@@ -57,8 +57,6 @@
+ fi
+ 
+ if test "${krb_cv_compile_et_cross}" = yes ; then
+-  krb_cv_com_err="cross"
+-elif test "${krb_cv_compile_et}" = "yes"; then
+   dnl Since compile_et seems to work, let's check libcom_err
+   krb_cv_save_LIBS="${LIBS}"
+   LIBS="${LIBS} -lcom_err"