X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fnonblocking.m4;h=fd6faeea631d2647def06681957c348d17feb7a7;hb=d16d5a56e1c99790c2452c66906760ac1109d013;hp=8224626bef7a8d5414ffc9282ebe976599f02042;hpb=836e0457064eb3b0b21bd2d4954cbc428a6b6277;p=gnulib.git

diff --git a/m4/nonblocking.m4 b/m4/nonblocking.m4
index 8224626be..fd6faeea6 100644
--- a/m4/nonblocking.m4
+++ b/m4/nonblocking.m4
@@ -1,4 +1,4 @@
-# nonblocking.m4 serial 1
+# nonblocking.m4 serial 2
 dnl Copyright (C) 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,
@@ -6,6 +6,8 @@ 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
@@ -20,4 +22,8 @@ AC_DEFUN([gl_NONBLOCKING_IO_BODY],
     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
 ])