Heads up: Problems with parallel make

[Marco Atzeri]

On 20.02.2023 18:34, Marco Atzeri wrote:
> 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.
> 

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

>>
>> 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 4.4.0.91.]
>>
>> Ken
> 

How are you configuring your build ?