Not all IRIX 6 boxes have 64bit libraries

[Tom Tromey]

>>>>> "Alexandre" == Alexandre Oliva <oliva@dcc.unicamp.br> writes:

Alexandre> We'd better skip building -mabi=64 multilibs when 64bit
Alexandre> standard libraries are missing, just like gcc does.  Here's
Alexandre> a patch that has been installed in gcc a couple of months
Alexandre> ago:

Thanks, I've installed this on the branch and the trunk.

T