Heads up: Problems with parallel make

Marco Atzeri marco.atzeri@gmail.com
Mon Feb 20 17:34:16 GMT 2023

On 20.02.2023 18:14, Ken Brown via Cygwin-apps wrote:
> On 2/20/2023 12:00 PM, Achim Gratz via Cygwin-apps wrote:
>> Ken Brown via Cygwin-apps writes:
>>> Thanks, Marco.  As expected, that fixes the problem for my test case
>>> (building TeX Live).  Obviously it would be better if the make
>>> developers would provide a configure option to use a pipe for the
>>> jobserver, but this is a good workaround if they don't.
>> Does it actually do a parallel build?  I've quickly tested a cmake based
>> project with it and it completely serializes the build.  Reverting to
>> 4.4 resolves that problem.

I noticed the same with another cmake build

make[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent 
make rule.

but I do not see the message on Autoconf build

> It does for my build of TeX Live.  I just tried 'make -j13 check', and I 
> saw many make processes and many sh processes running at once.  [But I'm 
> currently testing a self-built make]
> Ken

I will build it and test again


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