-for f in `find $br -type l |grep "$br"`; do
- ln -sfn `readlink -f $f |sed "s,$br,,"` $f
+for f in $(find $br -type l |grep "$br"); do
+# original version read like this
+# ln -sfn $(readlink -f $f |sed "s,$br,,") $f
+# however in the PL environment, readlink transforms /longbuildroot into /build,
+# and then sed fails to do its job, so readlink does not seem such a good idea
+ ln -sfn $(echo $f | sed "s,^$br,,") $f