[Bug bootstrap/49557] make chokes on various Makefile constructs

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49557

--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-07-01 12:46:22 UTC ---
> configure: error: cannot compute suffix of object files: cannot compile
> See `config.log' for more details.

Do exactly this, that will tell you what happened.