[Bug bootstrap/55083] failure while configuring libatomic is not cleaned up

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55083



--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-12-09 
02:23:48 UTC ---

It does not test if the directory exists but rather if the Makefile in the

directory exists.

    test ! -f $(TARGET_SUBDIR)/libatomic/Makefile || exit 0; \



So I think this is invalid.