gcc -pg broken after cygwin update?

Daniel Abrahamsson daniel.abrahamsson@prover.com
Wed Dec 7 08:58:15 GMT 2022


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?


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