Hi, PHP 5.4 now provides ZTS stuff required to build extension. An example of such a build is available in the php-pecl-mysqlnd-ms package (which still wait for a formal review). See: https://bugzilla.redhat.com/show_bug.cgi?id=742729#c4 Full spec: https://raw.github.com/remicollet/remirepo/master/php-pecl-mysqlnd-ms/php-pecl-mysqlnd-ms.spec This is a dual build (NTS + ZTS). ZTS build is conditional (for f16/f17 compatibility) This use the new macros provides by php-devel %php_ztsextdir %{_libdir}/php-zts/modules %php_ztsinidir %{_sysconfdir}/php-zts.d %php_ztsincldir %{_includedir}/php-zts/php %php_ztsbindir %{_bindir}/php-zts Of course, before adding a ZTS build, you need to check that the used libraries are thread safe ;) Feedback, and of course review, are welcome Hopes this example will help. Regards, Remi. P.S.1 I plan to fix some of pecl extensions I own to provide both NTS and ZTS extensions. P.S.2 Sorry for cross-posting, I recommend further discussion on php-devel list. _______________________________________________ php-devel mailing list php-devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/php-devel