This release was generated on 2017/03/04
on a mipsel64 linux machine from the GCC Compile Farm.
uname -a returns:
Linux erpro8-fsf2 4.1.4 #1 SMP PREEMPT Mon Aug 3 14:22:54 PDT 2015 mips64 GNU/Linux

In order to be able to successfully generate
executables linked to 32-bit C library,
the following change was introduced to install/makepack
script:

Index: install/makepack
===================================================================
--- install/makepack	(revision 1285)
+++ install/makepack	(working copy)
@@ -70,6 +70,12 @@
   TARGETOS=$SOURCEOS
 fi
 
+if [ "X$TARGETOS" == "Xlinux" ] ; then 
+  if [ -d /usr/lib/${TARGETCPU}-linux-gnu ] ; then
+    EXTRAOPT="-Fl/usr/lib/${TARGETCPU}-linux-gnu"
+ fi
+fi
+
 FULLTARGET=$TARGETCPU-$TARGETOS
 FULLSOURCE=$SOURCECPU-$SOURCEOS

With that addition of /usr/lib/mipsel-linux-gnu folder
to the library search path list, makepack
completed successfully.

Warning: there is no regular testsuite run
for mipsel-linux target, which means that there might be
many more failure than on other released targets.

Enjoy and please report any problem encountered.

Pierre Muller