I am working on adding Perl 5.36 to Fedora Rawhide/37.

The rebuild of polymake failed with this version in side tag f37-perl:


Description of problem:
Package polymake fails to build from source in Fedora Rawhide.

/builddir/build/BUILD/polymake-4.6/lib/core/src/perl/RefHash.xxs: In member function ‘SV* pm::perl::glue::{anonymous}::tmp_keysv::set(SV*)’:
/builddir/build/BUILD/polymake-4.6/lib/core/src/perl/RefHash.xxs:74:22: error: ‘HVhek_UNSHARED’ was not declared in this scope; did you mean ‘HVhek_NOTSHARED’?
   74 |    HEK_FLAGS(hekp) = HVhek_UNSHARED;
      |                      ^~~~~~~~~~~~~~
      |                      HVhek_NOTSHARED
ninja: build stopped: subcommand failed.
make: *** [Makefile:35: all] Error 1

It is caused by this change in Perl:

commit 1db404fc7d10badcbca1c0f589d382fc79c57813
Author: Nicholas Clark <nick>
Date:   Mon Oct 18 19:56:09 2021 +0000

    Rename HVhek_UNSHARED to HVhek_NOTSHARED
    
    "HVhek_UNSHARED" marked unshared HEKs - allocated directly with malloc(),
    rather then from the shared string table, and released with free().
    
    But *shared* HEKs (in the shared string table) are released by calling
    unshare_hek(), whilst unshared HEKs should never go near this.
    
    So rename them to "not shared", to avoid this confusion. Change their flag
    bit from 0x08 to 0x04 to remove a gap. 0x04 had previously been used to
    flag "REHASH", which was removed before v5.18.0
    
    Move the definition of the macro HVhek_MASK from hv.h to hv.c

Solution: Replace HVhek_UNSHARED by HVhek_NOTSHARED in lib/core/src/perl/RefHash.xxs