www/libxul: fails to compile with CLANG and fails to install with GCC

[O. Hartmann]

I already filed a PR (ports/171566) regarding the CLANG compilation
issue, but since CLANG is a troublemaker for several ports, I also used
USE_GCC=4.6 to compile the port www/libxul and this works - but fails
then installing with

[...]
  adding: hyphenation/hyph_hu.dic (deflated 62%)
/usr/ports/www/libxul/work/mozilla-esr10/dist/bin/xpcshell: Undefined
symbol "JSVAL_NULL"
gmake[1]: *** [install] Error 1
gmake[1]: Leaving directory
`/usr/ports/www/libxul/work/mozilla-esr10/xulrunner/installer'
gmake: *** [install] Error 2
*** [gecko-pre-install] Error code 2

Stop in /usr/ports/www/libxul.
*** [install] Error code 1


-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 488 bytes
Desc: OpenPGP digital signature
Url : http://lists.freebsd.org/pipermail/freebsd-ports/attachments/20120919/6019a9aa/signature.pgp