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Date: Wed, 7 Dec 2022 16:09:54 +0100
To: Daniel Abrahamsson via Cygwin <cygwin AT cygwin DOT com>
Subject: Re: gcc -pg broken after cygwin update?
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From: Corinna Vinschen via Cygwin <cygwin AT cygwin DOT com>
Reply-To: cygwin AT cygwin DOT com
Cc: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
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On Dec  7 15:05, Daniel Abrahamsson via Cygwin wrote:
> > On Dec  7 12:50, Corinna Vinschen via Cygwin wrote:
> > > On Dec  7 08:58, Daniel Abrahamsson via Cygwin wrote:
> > > > Hi,
> > > > 
> > > > This morning I updated cygwin, and after that gcc started producing errors like this:
> > > > 
> > > > >  gcc -Wall -Wextra -Werror -pedantic -Wno-unused-parameter -g -pg -DVERBOSE -c -o ../obj/<somefile>.o <somefile>.c
> > > > > gcc -o ../bin/<mybin> ../obj/<somefile>.o -pg
> > > > > /usr/lib/gcc/x86_64-pc-cygwin/11/../../../../x86_64-pc-cygwin/bin/ld: ../obj/<somefile>.o: in function `exit_eval_failure':
> > > > /home/daab/dev/someproj/src/<somefile>.c:17: undefined reference to `__fentry__'
> > > > [...]
> > > Thanks for the report.
> > > 
> > > This is a dumb bug I introduced into the build system in 3.4.0.  I fixed
> > > that in the git repo, but the automated build of the matching test
> > > [...]
> > Automated builds have been picked up again and the Cygwin test package
> > 3.5.0-0.17.g95f5b0a62036 should be available later today.  You can
> > install it using setup.exe, just like any other test release.
> >
> > Don't forget to install the matching cygwin-devel package, too, that's
> > the one containing the library libgmon.a, which is what gets linked in
> > with `gcc -pg'.
> 
> I can confirm 3.5.0-0.17.g95f5b0a62036 solves the issue with the "-pg"
> flag. Thank you!

Thanks for your feedback!


Corinna

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