[Bug bootstrap/41337] [LTO] Parallel build failure

["dmitrij.ledkov at ubuntu dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41337

--- Comment #4 from Dima <dmitrij.ledkov at ubuntu dot com> 2010-11-17 21:02:58 UTC ---
(In reply to comment #3)
> If you encounter parallel build failures, please post exact revision that was
> built, configure command line, build system type, number of processors on the
> box, N argument in 'make -jN', and ideally also the likelihood (in precent)
> that the build fails, if it is not deterministic.  Please also post the last
> 300 or so lines of build output, and maybe check whether it always fails in the
> same spot.
> 

I'm building a cross-compiler: build/host = gnu-linux; target =
i686-w64-mingw32. I've been using gcc-4.4 branch this whole week (will test
again with trunk when I have time). It is fully deterministic (100% fail rate
at the same spot) when I supply --with-build-libsubdir pointing to the
$prefix/$target-triplet/lib. But the mentioned value for --with-build-libsubdir
option is bogus and doesn't make sense.

> It is not too hard to pinpoint parallel build failures but only if there is
> enough data available.

I no longer believe my error was to do with parallel make, it was the error
between the keyboard and the chair =) in other words "pilot error".

If someone else will come across with

> make[1]: *** No rule to make target `build/gencondmd', needed by `s-condmd'

Check your config and make sure it is sane =)