-# nonblocking.m4 serial 1
-dnl Copyright (C) 2011 Free Software Foundation, Inc.
+# nonblocking.m4 serial 2
+dnl Copyright (C) 2011-2013 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
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
])