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Annotation of embedaddon/libiconv/srcm4/signalblocking.m4, revision 1.1.1.3

1.1.1.3 ! misho       1: # signalblocking.m4 serial 14
        !             2: dnl Copyright (C) 2001-2002, 2006-2019 Free Software Foundation, Inc.
1.1       misho       3: dnl This file is free software; the Free Software Foundation
                      4: dnl gives unlimited permission to copy and/or distribute it,
                      5: dnl with or without modifications, as long as this notice is preserved.
                      6: 
                      7: # Determine available signal blocking primitives. Three different APIs exist:
                      8: # 1) POSIX: sigemptyset, sigaddset, sigprocmask
                      9: # 2) SYSV: sighold, sigrelse
                     10: # 3) BSD: sigblock, sigsetmask
                     11: # For simplicity, here we check only for the POSIX signal blocking.
                     12: AC_DEFUN([gl_SIGNALBLOCKING],
                     13: [
                     14:   AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
1.1.1.2   misho      15:   AC_REQUIRE([gl_CHECK_TYPE_SIGSET_T])
                     16:   if test $gl_cv_type_sigset_t = yes; then
1.1       misho      17:     AC_CHECK_FUNC([sigprocmask], [gl_cv_func_sigprocmask=1])
                     18:   fi
                     19:   if test -z "$gl_cv_func_sigprocmask"; then
                     20:     HAVE_POSIX_SIGNALBLOCKING=0
                     21:   fi
                     22: ])
                     23: 
1.1.1.2   misho      24: # Prerequisites of lib/sigprocmask.c.
                     25: AC_DEFUN([gl_PREREQ_SIGPROCMASK], [:])