[Bug testsuite/53155] Not parallel: test for -j fails with new make

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53155

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-04-28 
21:53:21 UTC ---
-j by itself fails but -j with a number passes.  This is what I use which is
why it works.