Revision history for Punk-OpenTelemetry

0.05    2026-08-23
        - Fixed the module failing to load with "undefined symbol:
          clock_gettime" on glibc before 2.17 (Debian wheezy, reported by
          CPAN Testers on 5.20, 5.22 and 5.24). clock_gettime lives in librt
          there, so the configure probe now retries with -lrt and links it
          when that is what makes it work.

0.04    2026-08-20
        - FIX: change abi version checks from == to <=
        - Fixed a SEGFAULT on perls before 5.32, POPs
        - Fixed t/07-metrics.t failing on every perl built uselongdouble

0.03    2026-08-20
        - Fixed a SEGFAULT on perls before 5.20, reported by CPAN Testers
          against 0.01 on 5.18.2 (FreeBSD 9.2, gcc 4.2.1) and 5.18.4
          (Linux, gcc 12). Eleven XSUBs returned by assigning &PL_sv_undef to an
          SV* RETVAL. The typemap mortalises RETVAL, so each of those
          returns decremented the refcount of an IMMORTAL and before
          5.20 immortals have no refcount protection, so the decrements
          are real and the SV is eventually freed underneath the
          interpreter. 

0.02    2026-08-19
        - Fixed a SEGFAULT on perls before 5.20, reported by CPAN Testers
          against 0.01 on 5.18.2 (FreeBSD 9.2, gcc 4.2.1) and 5.18.4
          (Linux, gcc 12). Eleven XSUBs returned by assigning &PL_sv_undef to an
          SV* RETVAL. The typemap mortalises RETVAL, so each of those
          returns decremented the refcount of an IMMORTAL and before
          5.20 immortals have no refcount protection, so the decrements
          are real and the SV is eventually freed underneath the
          interpreter. 

0.01    2026-08-19
	First version