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Mail Archives: cygwin/2022/12/07/03:59:22

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To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: gcc -pg broken after cygwin update?
Thread-Topic: gcc -pg broken after cygwin update?
Thread-Index: AdkKF5h5z4CMSmVXSTihMSRdgfhtQw==
Date: Wed, 7 Dec 2022 08:58:15 +0000
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From: Daniel Abrahamsson via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Daniel Abrahamsson <daniel DOT abrahamsson AT prover DOT com>
Sender: "Cygwin" <cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com>

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__'

If I drop the "pg" flags from the compilation and linking stages, everything works.

I typically update cygwin packages once per week, but now it has been maybe a month since I last updated. As far as I can tell from the cygwin-announce archives, there has not been any gcc updates in that period, but I do note that cygwin itself has been updated. Could that be related?

Regards,
Daniel

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