kc3-lang/gnulib/m4/signalblocking.m4

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• Hash : 8db49630
  Author :
  Date : 2011-07-06T00:42:24
  

  sys_select: define sigset_t more portably
  
  * lib/sys_select.in.h: Always include <sys/types.h>, since
  we now need sigset_t and mingw defines it there.
  Include <signal.h> before split inclusion guard, to avoid
  mishaps on Solaris, whose <signal.h> eventually includes us.
  * m4/signal_h.m4 (gl_SIGNAL_H): Require gl_CHECK_TYPE_SIGSET_T.
  (gl_CHECK_TYPE_SIGSET_T): New macro, most of the contents of
  which come from ...
  * m4/signalblocking.m4 (gl_SIGNALBLOCKING): Require
  gl_CHECK_TYPE_SIGSET_T.
  (gl_PREREQ_SIGPROCMASK): Now a no-op, since gl_CHECK_TYPE_SIGSET_T
  does the real work.
  * modules/sys_select (Depends-on): Add 'signal'.
  

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• m4/signalblocking.m4

• # signalblocking.m4 serial 12
  dnl Copyright (C) 2001-2002, 2006-2011 Free Software Foundation, Inc.
  dnl This file is free software; the Free Software Foundation
  dnl gives unlimited permission to copy and/or distribute it,
  dnl with or without modifications, as long as this notice is preserved.
  
  # Determine available signal blocking primitives. Three different APIs exist:
  # 1) POSIX: sigemptyset, sigaddset, sigprocmask
  # 2) SYSV: sighold, sigrelse
  # 3) BSD: sigblock, sigsetmask
  # For simplicity, here we check only for the POSIX signal blocking.
  AC_DEFUN([gl_SIGNALBLOCKING],
  [
    AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
    AC_REQUIRE([gl_CHECK_TYPE_SIGSET_T])
    if test $gl_cv_type_sigset_t = yes; then
      AC_CHECK_FUNC([sigprocmask], [gl_cv_func_sigprocmask=1])
    fi
    if test -z "$gl_cv_func_sigprocmask"; then
      HAVE_POSIX_SIGNALBLOCKING=0
    fi
  ])
  
  # Prerequisites of lib/sigprocmask.c.
  AC_DEFUN([gl_PREREQ_SIGPROCMASK], [:])
  

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