From 1e2788c0440aff17f2953280443d429a62de09c8 Mon Sep 17 00:00:00 2001
From: "Yann E. MORIN\"" <yann.morin.1998@anciens.enib.fr>
Date: Wed, 7 Jul 2010 22:33:49 +0200
Subject: scripts/finish: do not try to symlink if sed expr is a no-op

If the sed expression does not transform the
tuple, do not try to create the symlink.
(transplanted from 5d6d3c28a658a65551d4eb5de414fd97b575f314)

diff --git a/scripts/build/internals.sh b/scripts/build/internals.sh
index 13239bf..abf6b47 100644
--- a/scripts/build/internals.sh
+++ b/scripts/build/internals.sh
@@ -31,7 +31,11 @@ do_finish() {
         fi
         if [ -n "${CT_TARGET_ALIAS_SED_EXPR}" ]; then
             _t=$(echo "$t" |sed -r -e "${CT_TARGET_ALIAS_SED_EXPR}")
-            CT_DoExecLog ALL ln -sv "${t}" "${_t}"
+            if [ "${_t}" = "${t}" ]; then
+                CT_DoLog WARN "The sed expression '${CT_TARGET_ALIAS_SED_EXPR}' has no effect on '${t}'"
+            else
+                CT_DoExecLog ALL ln -sv "${t}" "${_t}"
+            fi
         fi
     done
     CT_Popd
-- 
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