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Re: fork: Resource temporarily unavailable errors after upgrading cygwin packages
- From: David Finnie <david dot finnie68 at gmail dot com>
- To: cygwin at cygwin dot com
- Date: Thu, 2 Jan 2020 09:32:49 +1100
- Subject: Re: fork: Resource temporarily unavailable errors after upgrading cygwin packages
- References: <firstname.lastname@example.org> <email@example.com>
Thanks for having a look at my issue.
On 1/01/2020 06:20, Ken Brown wrote:
On 12/30/2019 6:10 PM, David Finnie wrote:
I recently upgraded my cygwin64 installation to get latest packages.
After the install, if I run a fairly lengthy GNU make with multiple concurrent
jobs (-j option) specified, some of the sub-makes fail with "Resource
temporarily unavailable" errors. In all cases, this has been when make is
starting a shell (i.e. $(shell ...) ) to help with setting up some of the
variables required in the make processing. The failure, however, occurs in
different places in the make files used (the make spawns several sub-makes).
Does this happen with every parallel make, or is it one specific program that
you're building? If the latter, can you give a detailed recipe so that others
can try to reproduce the problem?
It's happening consistently across a bunch of libraries and executables
that I build (with a series of invocations of make). While each of those
builds has their own Makefile, each of them includes a common set of
makefiles that does the vast majority of the work, so I guess you could
say that it really is just isolated (as far as I can tell), to one build
environment. The build is not of open source software - it is for
software created by the company I work for, so unfortunately I can't
share all of the source code etc., but I can certainly give details of
what we're doing.
The make builds a cross-platform set of products, and so invokes both
Windows native compilers, and also cross compilers for the other
platforms (Linux, and HPE NonStop). So there are many tools being
Keep in mind, though, that this has been working perfectly for me for
over a decade. I will say that I did run into the need to run rebase
after upgrading cygwin many years ago, but that fixed the issue for me
immediately. Not so this time, and there has been nothing else changed
in my environment. I actually ran the build successfully just minutes
before upgrading the cygwin packages, and then it failed immediately
I have not tried building for any other product. I might try that.
Have you tried reverting to cygwin-3.0.7-1?
No, I haven't - I'll try that now. Thanks.
The only thing that jumps out at me from your cygcheck output is that your PATH
is very long. I don't know if that's relevant, but you might try cutting it
down before running make.
I did try changing PATH to a much smaller value
(/bin:/usr/bin:/usr/local/bin) but I still got exactly the same
behaviour :-( A good thing to try, though.
I'll see how I go after downgrading cygwin.
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