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Last change
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Imported grep 3.7 from grep-3.7.tar.gz (sha256: c22b0cf2d4f6bbe599c902387e8058990e1eee99aef333a203829e5fd3dbb342), applying minimal auto-props.
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File size:
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| 1 | # signalblocking.m4 serial 17
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| 2 | dnl Copyright (C) 2001-2002, 2006-2021 Free Software Foundation, Inc.
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| 3 | dnl This file is free software; the Free Software Foundation
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| 4 | dnl gives unlimited permission to copy and/or distribute it,
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| 5 | dnl with or without modifications, as long as this notice is preserved.
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| 6 |
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| 7 | # Determine available signal blocking primitives. Three different APIs exist:
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| 8 | # 1) POSIX: sigemptyset, sigaddset, sigprocmask
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| 9 | # 2) SYSV: sighold, sigrelse
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| 10 | # 3) BSD: sigblock, sigsetmask
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| 11 | # For simplicity, here we check only for the POSIX signal blocking.
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| 12 | AC_DEFUN([gl_SIGNALBLOCKING],
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| 13 | [
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| 14 | AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
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| 15 | AC_REQUIRE([gl_CHECK_TYPE_SIGSET_T])
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| 16 | HAVE_POSIX_SIGNALBLOCKING=0
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| 17 | if test "$gl_cv_type_sigset_t" = yes; then
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| 18 | AC_CHECK_FUNC([sigprocmask], [HAVE_POSIX_SIGNALBLOCKING=1])
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| 19 | fi
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| 20 | ])
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| 21 |
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| 22 | # Prerequisites of lib/sigprocmask.c.
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| 23 | AC_DEFUN([gl_PREREQ_SIGPROCMASK], [:])
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