view m4/yield.m4 @ 13274:d87472cc6eec

gnulib-common.m4: make glibc write diagnostics to stderr, not /dev/tty * m4/gnulib-common.m4 (gl_COMMON_BODY): Set LIBC_FATAL_STDERR_. Prompted by an exchange with Gilles Espinasse.
author Jim Meyering <jim@meyering.net>
date Tue, 27 Apr 2010 08:57:31 +0200
parents c2cbabec01dd
children 97fc9a21a8fb
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# yield.m4 serial 2
dnl Copyright (C) 2005-2010 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.

AC_DEFUN([gl_YIELD],
[
  AC_REQUIRE([gl_THREADLIB])
  dnl On some systems, sched_yield is in librt, rather than in libpthread.
  YIELD_LIB=
  if test $gl_threads_api = posix; then
    dnl Solaris has sched_yield in librt, not in libpthread or libc.
    AC_CHECK_LIB([rt], [sched_yield], [YIELD_LIB=-lrt],
      [dnl Solaris 2.5.1, 2.6 has sched_yield in libposix4, not librt.
       AC_CHECK_LIB([posix4], [sched_yield], [YIELD_LIB=-lposix4])])
  fi
  AC_SUBST([YIELD_LIB])
])