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Subject:	Re: fork: Resource temporarily unavailable errors after upgrading cygwin packages
To:	cygwin AT cygwin DOT com
References:	<6d43c714-c4ba-4f0c-9913-cb8453129c85 AT gmail DOT com> <d24aa066-ab3d-9ff0-215a-0a1ed1ec2e5d AT cornell DOT edu> <93562f34-3a14-0c10-cb57-1ae861307d82 AT gmail DOT com> <f4a808cf-d129-f6ce-0da8-674cf88a71ad AT gmail DOT com> <810b0c97ee0697c06bdaa4dff4081bb502bc46ab DOT camel AT dontech DOT dk> <CACSsrOzmexPqVeAoZigrkR4Tv6sWa-506Ui8UzsgLcTSBotgLw AT mail DOT gmail DOT com> <9ed4b0776323e4a0f62191121715d52a0429bdb2 DOT camel AT dontech DOT dk>
From:	David Finnie <david DOT finnie68 AT gmail DOT com>
Message-ID:	<d5109f77-9d73-fd68-fac6-1119037c8468@gmail.com>
Date:	Thu, 6 Feb 2020 09:18:05 +1100
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Hi Pedro,
>> I have started down the road of building cygwin, but did run into a
>> few issues so don't have a debuggable version yet. If you beat me to
>> it,  please let me know. Thanks!
> Any findings?

Unfortunately no, I did get a clean build, but "make install" following 
it just created complete havoc in my cygwin environment (lots of errors 
indicating that a rebase was required, but rebasing didn't fix them). 
Reinstalls of the cygwin base dll (and other packages) didn't fix it, 
and I was forced to delete my entire cygwin directory and reinstall all 
cygwin packages that I needed from scratch. I'm not inclined to go 
through that pain again any time soon.

I have on my to-do list to use the cygwin time machine, as Ken 
suggested, and will try to isolate when the problem first appeared. 
However, my day job has been getting in the way on that, so I haven't 
yet found the time.

For the moment, I'm continuing to run on 3.0.7 without any issues.

> I have found something interesting:
>
> 1) If i run the terminal without mintty, the problem goes away. I can
> run my makefiles with "make -j20" without any issues if i start with
> "bash --login" instead of the mintty shortcut, where it just uses the
> normal windows terminal.
>
> 2) As soon as i run via mintty, even "make -j2" quickly goes south,
> causes various fork() issues as we have seen. I will see if i can
> create a small makefile that shows this.
>
That would be awesome if you could create a small test case.

Dave


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