For me, the failure occurs only with -DDEBUGGING builds.
Should the proposed perldelta entry mention that non-debugging builds are not affected ?

isnt a global rebase of libperl and all XS DLLs supposed to run in Cygwin?

For me, the failure occurs only with -DDEBUGGING builds. Should the proposed perldelta entry mention that non-debugging builds are not affected ?

It would be anything that makes the binaries larger, I reproduced it with ./Configure -des -Dusedevel -Doptimize=-O0\ -g and with ./Configure -des -Dusedevel -Doptimize=-O2\ -g\ -march=x86-64-v2

perl5/cpan/ExtUtils-MakeMaker/lib/ExtUtils/MM_Cygwin.pm

Line 134 in a6f05e6

=item dynamic_lib

isnt a global rebase of libperl and all XS DLLs supposed to run in Cygwin?

That isn't what that says, and isn't what it does.

cygperl_5_41_6.dll isn't an archdir dll, though perhaps that code should include cygperl*.dll too.

Also, it only runs for 32-bit builds, which cygwin no longer support, which I can understand, since DLL conflicts like this were many times more common there.

For me, the failure occurs only with -DDEBUGGING builds. Should the proposed perldelta entry mention that non-debugging builds are not affected ?

I've added a note on this.

For me, the failure occurs only with -DDEBUGGING builds. Should the proposed perldelta entry mention that non-debugging builds are not affected ?

I've added a note on this.

Can someone familiar with Cygwin review this p.r.? (I'd like to quiet our CI failures on that platform.) Thanks.

The DLL load addresses are generated by the linker based on the DLL names, and 5.39.10 we're getting a conflict between cygperl5_41_6.dll and Langinfo.dll.

As a workaround, statically link Langinfo into cygperl for CI and mention the problem in perldelta for anyone else who might build perl on cygwin

Fixes but should not close #22695

@tonycoz, this did close #22695; should you re-open it? (My impression is that our Cygwin CI builds are still failing.)

@tonycoz, this did close #22695; should you re-open it?

Thanks github, reopened.

(My impression is that our Cygwin CI builds are still failing.)

blead is passing, see the green tick at the top of https://github.com/Perl/perl5 and you can see green ticks for the CI runs done since this was merged at https://github.com/Perl/perl5/commits/blead/

Any PRs will need to be rebased on blead to pass.