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Paul Eggert authored
* configure.ac (ac_func_list): Omit pthread_sigmask, since we check for that ourselves rather than relying on gnulib. (HAVE_PTHREAD, LIB_PTHREAD, _THREAD_SAFE): Port better to FreeBSD, by also checking for pthread_create, pthread_self, pthread_sigmask. Tighten the test for pthread_atfork while we're at it. Fixes: bug#20136
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