Ellie, Yadd, thanks for your answers!
Debian stable (Bullseye) uses this versions:
libpcre2-8-0:amd64 10.36-2
libpcre3:amd64 2:8.39-13
and works fine.
In Debian testing (Bookworm) this versions are installed:
libpcre2-8-0:amd64 10.39-3
libpcre3:amd64 2:8.39-13
and cyradm does not work.
I'll report it on Debian bug tracker, following your suggestions.
Thanks again!
Javier.-
El 24/2/22 a las 20:10, ellie timoney escribió:
Hi,
On Thu, 24 Feb 2022, at 2:00 AM, Infraestructura TIC - UNNOBA wrote:
Yes, both packages are installed:
# dpkg -l | grep libpcre
ii libpcre2-8-0:amd64 10.39-3
amd64 New Perl Compatible Regular Expression Library- 8 bit
runtime files
ii libpcre3:amd64 2:8.39-13 amd64
Old Perl 5 Compatible Regular Expression Library - runtime files
What happens when you build and run cyrus with only one of these pcre libraries installed, but not both?
What about only the other?
undefined symbol: pcreposix_regexec at
This is probably an incompatibility between the old "libpcre3" package and the new "libpcre2" package.
If you're seeing "undefined symbol: pcreposix_regexec", this almost certainly means that (part of) your Cyrus was built using the libpcre3 headers, but at runtime is loading a library that does not provide the renamed function those headers expect.
The libpcre3 package on Debian has a very necessary modification that renames "regexec" to "pcreposix_regexec", to prevent it clashing with the identically-named but incompatible "regexec" from glibc, and the corresponding header defines a macro such that if you're using the pcre header (not the libc one) and call "regexec", your code will find the pcre version of the function (not the libc one).
I don't know if libpcre2 still requires this hack. I guess it might not, and then doesn't include it.
There is an open issue regarding the state of Cyrus's support for the new libpcre2 library: https://github.com/cyrusimap/cyrus-imapd/issues/3861 This issue is about a single test failing when using libpcre2, but note that _there are no tests for cyradm_, so any problems with cyradm would not even be found by the tests. I suggest you join the discussion there with this report. There is a link to the same issue in the Debian bug tracker; you may want to join that discussion too.
Cyrus 3.4 has no declared support for libpcre2. If you want to actually run Cyrus, please use the older libpcre3. I believe the Debian Testing package might be linking against libpcre2 deliberately to solicit reports of things breaking, so please report it!
Cheers,
ellie
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