Re: Bizarro race conditions in the Git Makefile

From: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date: Aug 6, 2010, 21:40 UTC
Message-ID: <AANLkTin=6pmfPjmM-W4UFf1g+0Z9Rrprc0h0mThUOUFx@mail.gmail.com>
In-Reply-To: <20100806211407.GB6495@burratino>

On Fri, Aug 6, 2010 at 21:14, Jonathan Nieder <jrnieder@gmail.com> wrote:

Show 20 quoted lines

> Ęvar Arnfjörš Bjarmason wrote:
>
>> Those interested in
>> poking their eyes can try:
>>
>>     while nice -n 30 make -j 15 clean all CFLAGS=-O0 CC=gcc; do 1; done
>
> You are asking make to simultaneously build and unbuild everything.
> It does not really surprise me that it gets confused.
>
> Does
>
>  while
>        nice -n 30 make -j 15 clean CFLAGS=-O0 CC=gcc &&
>        nice -n 30 make -j 15 all CFLAGS=-O0 CC=gcc
>  do
>        :
>  done
>
> behave better?

Yes that works. I thought that -j $n would mean that make would use $n jobs to complete the first target, then move onto the next. Not execute them all in paralell.

Thanks, and I have no idea about those Makefile/Perl changes.