Heads up: Problems with parallel make

[Ken Brown]

On 2/13/2023 6:05 PM, Ken Brown via Cygwin-apps wrote:
> Several of my packages that used to build fine with parallel make now 
> require 'make -j1'.  Without this I either get strange errors or a hang.
> 
> I can't find any pattern to explain when the problem occurs and when it 
> doesn't, but it seems to be due to a change in make, starting with 
> version 4.4.  By default, make now uses a FIFO rather than a pipe in its 
> jobserver implementation.  You can override this with the make flag
> 
>    --jobserver-style=pipe
> 
> In all cases where I've tried this, parallel make works again.
> 
> It wouldn't surprise me if there's a bug in Cygwin's FIFO implementation 
> that's responsible for this, but I haven't yet tried to track it down.

I've now reported this upstream:

   https://lists.gnu.org/archive/html/bug-make/2023-02/msg00029.html

Ken