Mercurial > gnulib
view m4/nonblocking.m4 @ 40192:cd38408f509a
relocatable-prog: Use $ORIGIN trick also on GNU/Hurd.
* m4/relocatable.m4 (gl_RELOCATABLE_BODY): Use $ORIGIN trick also on
Hurd with glibc >= 2.27.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 23 Feb 2019 21:24:14 +0100 |
parents | b06060465f09 |
children |
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# nonblocking.m4 serial 2 dnl Copyright (C) 2011-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl Tests whether non-blocking I/O is natively supported by read(), write(). dnl Sets gl_cv_have_nonblocking. dnl Also tests whether open() supports O_NONBLOCK. dnl Sets gl_cv_have_open_O_NONBLOCK. AC_DEFUN([gl_NONBLOCKING_IO], [ dnl Use AC_REQUIRE here, so that the default behavior below is expanded dnl once only, before all statements that occur in other macros. AC_REQUIRE([gl_NONBLOCKING_IO_BODY]) ]) AC_DEFUN([gl_NONBLOCKING_IO_BODY], [ AC_REQUIRE([AC_CANONICAL_HOST]) case "$host_os" in mingw*) gl_cv_have_nonblocking=no ;; *) gl_cv_have_nonblocking=yes ;; esac case "$host_os" in mingw*) gl_cv_have_open_O_NONBLOCK=no ;; *) gl_cv_have_open_O_NONBLOCK=yes ;; esac ])