Heads up: Problems with parallel make

Ken Brown kbrown@cornell.edu
Tue Feb 21 00:48:37 GMT 2023

On 2/20/2023 6:29 PM, Ken Brown via Cygwin-apps wrote:
> On 2/20/2023 5:00 PM, Ken Brown via Cygwin-apps wrote:
>> On 2/20/2023 2:12 PM, Marco Atzeri via Cygwin-apps wrote:
>>> uploaded as test
>>> following message is still present while missing in 4.4-1
>>>> make[1]: warning: jobserver unavailable: using -j1.  Add '+' to 
>>>> parent make rule.
>>> and I do not see clear evidence of parallelism like in 4.4-1
>> I doubt if this is related to the pipe vs. fifo issue, but maybe you 
>> should test to be sure.
>> Do you have a simple way to reproduce the problem?  For example, does 
>> it happen if you just make a toy cmake project?
> Ignore what I said about 'make -j13 check' working right in the TeX Live 
> build.  I just retried it and saw the "jobserver unavailable" message. 
> When I saw several makes running at once, I think it was because of 
> recursion, not parallelism.  So there's a real problem that can be 
> reproduced without cmake.

I'm going to report this upstream, as a continuation of the upstream bug 
report that I filed earlier.


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