building an 8.4-STABLE i386 poudriere jail on an 10.0-STABLE amd64 host

[Don Lewis]

I'm trying to create an 8.4-STABLE i386 poudriere jail on a host that is
running 10.0-STABLE amd64.  I'm running the following commmand:

poudriere jail -c -j 84STABLEi386 -m svn -v stable/8 -a i386 -p default

Unfortuantely, I'm getting stuck at this point:

===> gnu/usr.bin/gperf/doc (obj)
/usr/obj/i386/var/poudriere/jails/84STABLEi386/usr/src/tmp/var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/doc created for /var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/doc
rm -f .depend
mkdep -f .depend -a    -I/usr/obj/i386/var/poudriere/jails/84STABLEi386/usr/src/tmp/legacy/usr/include -I/var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/lib -I/var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf  /var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/bool-array.cc /var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/hash-table.cc /var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/input.cc /var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/keyword-list.cc /var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/keyword.cc /var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/main.cc /var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/options.cc /var/poudriere/jails/84STABLEi386/usr/src/!
 gnu/usr.bin/gperf/../../../contrib/gperf/src/output.cc /var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/positions.cc /var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/search.cc /var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/version.cc /var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/lib/getline.cc /var/poudriere/jails/84STABLEi386/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/lib/hash.cc   
echo gperf: /usr/lib/libc.a /usr/obj/i386/var/poudriere/jails/84STABLEi386/usr/src/tmp/legacy/usr/lib/libegacy.a >> .depend
echo gperf: /usr/lib/libstdc++.a >> .depend
===> gnu/usr.bin/gperf/doc (depend)
make: don't know how to make /usr/lib/libstdc++.a. Stop
*** Error code 2
1 error
*** Error code 2
1 error
*** [buildworld] Error code 2
1 error
====>> Error: Failed to 'make buildworld'
====>> Error while creating jail, cleaning up.
====>> Removing 84STABLEi386 jail... done


There's no /usr/lib/libstdc++.a on this machine because libstdc++ has
been removed from /usr/src on FreeBSD 10.  If I set WITH_GCC=yes in
/etc/src.conf, I get /usr/bin/gcc, but no g++ or libstdc++.  And why are
gperf and groff bootstrap tools anyway???