Re: Make losing jobserver tokens on Windows

[Edward Welbourne]

>> I believe that the goal of the Cygwin port is to implement a POSIX
>> layer on top of Windows, so I'm assuming that when you compile GNU
>> make with Cygwin it uses the POSIX implementation of the jobserver.
>> This implementation relies on certain POSIX behaviors of pipes and
>> signals and it's possible that the Cygwin wrappers here have an issue
>> that is leading to this problem.

Magnus Ihse Bursie (21 February 2022 15:56) asked:
> Is there some way I can verify this hypothesis (e.g. debug output
> flags), other than looking at the Cygwin source on how they
> configure/build make?

Conjecture: run GNU make's own testsuite on the Cybwin build of it.
Presumably possible by running make test in make's source tree.
At least, worth a try ...

        Eddy.