Heads up: Problems with parallel make

[Ken Brown]

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 4.4.0.91-1
>>
>>
>> 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 4.4.0.90-1 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.

Ken