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25 lines
929 B
25 lines
929 B
# signalblocking.m4 serial 14 |
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dnl Copyright (C) 2001-2002, 2006-2017 Free Software Foundation, Inc. |
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dnl This file is free software; the Free Software Foundation |
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dnl gives unlimited permission to copy and/or distribute it, |
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dnl with or without modifications, as long as this notice is preserved. |
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# Determine available signal blocking primitives. Three different APIs exist: |
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# 1) POSIX: sigemptyset, sigaddset, sigprocmask |
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# 2) SYSV: sighold, sigrelse |
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# 3) BSD: sigblock, sigsetmask |
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# For simplicity, here we check only for the POSIX signal blocking. |
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AC_DEFUN([gl_SIGNALBLOCKING], |
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[ |
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AC_REQUIRE([gl_SIGNAL_H_DEFAULTS]) |
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AC_REQUIRE([gl_CHECK_TYPE_SIGSET_T]) |
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if test $gl_cv_type_sigset_t = yes; then |
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AC_CHECK_FUNC([sigprocmask], [gl_cv_func_sigprocmask=1]) |
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fi |
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if test -z "$gl_cv_func_sigprocmask"; then |
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HAVE_POSIX_SIGNALBLOCKING=0 |
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fi |
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]) |
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# Prerequisites of lib/sigprocmask.c. |
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AC_DEFUN([gl_PREREQ_SIGPROCMASK], [:])
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