PGO builds of shared ext-intl are broken

[cmb69]

Description

The following code:

buildconf
configure --enable-snapshot-build --with-php-build=..\deps --enable-pgi
nmake

Resulted in this output:

   Creating library D:\a\php-ftw\php-ftw\php\vs16\x64\obj\Release_TS\php_intl.lib and object D:\a\php-ftw\php-ftw\php\vs16\x64\obj\Release_TS\php_intl.exp
idn.obj : error LNK2001: unresolved external symbol "void * _tsrm_ls_cache" (?_tsrm_ls_cache@@3PEAXEA)
  Hint on symbols that are defined and could potentially match:
    _tsrm_ls_cache
D:\a\php-ftw\php-ftw\php\vs16\x64\obj\Release_TS\php_intl.dll : fatal error LNK1120: 1 unresolved externals

See https://github.com/cmb69/php-ftw/actions/runs/16617525563/job/47013603625 for full log.

PHP Version

PHP master

Operating System

Windows

[cmb69]

The problem is apparently the name mangling in the intl extension (C++). A work-around would be to build without DZEND_ENABLE_STATIC_TSRMLS_CACHE (change in config.w32), but that would be suboptimal performance wise.

I expect that to happen for other C++ extensions as well (AFAIK we only have ext-intl bundled).