X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fopen.m4;h=d8191842fc562354722d5c2b9ce1968300663fca;hb=21492d6c3ca00ff0827528640804732f2ed66470;hp=d402da994dd7c94fdbbf16f724decd58d0cda20c;hpb=64865499c9cf8748356a0857a8481d74b394bd79;p=gnulib.git

diff --git a/m4/open.m4 b/m4/open.m4
index d402da994..d8191842f 100644
--- a/m4/open.m4
+++ b/m4/open.m4
@@ -1,5 +1,5 @@
-# open.m4 serial 9
-dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
+# open.m4 serial 13
+dnl Copyright (C) 2007-2011 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.
@@ -9,7 +9,7 @@ AC_DEFUN([gl_FUNC_OPEN],
   AC_REQUIRE([AC_CANONICAL_HOST])
   case "$host_os" in
     mingw* | pw*)
-      gl_REPLACE_OPEN
+      REPLACE_OPEN=1
       ;;
     *)
       dnl open("foo/") should not create a file when the file name has a
@@ -30,17 +30,21 @@ AC_DEFUN([gl_FUNC_OPEN],
 #endif
 int main ()
 {
+  int result = 0;
 #if HAVE_LSTAT
-  if (open ("conftest.lnk/", O_RDONLY) != -1) return 2;
+  if (open ("conftest.lnk/", O_RDONLY) != -1)
+    result |= 1;
 #endif
-  return open ("conftest.sl/", O_CREAT, 0600) >= 0;
+  if (open ("conftest.sl/", O_CREAT, 0600) >= 0)
+    result |= 2;
+  return result;
 }]])],
             [gl_cv_func_open_slash=yes],
             [gl_cv_func_open_slash=no],
             [
 changequote(,)dnl
              case "$host_os" in
-               freebsd* | aix* | hpux* | solaris2.[0-9]*)
+               freebsd* | aix* | hpux* | solaris2.[0-9] | solaris2.[0-9].*)
                  gl_cv_func_open_slash="guessing no" ;;
                *)
                  gl_cv_func_open_slash="guessing yes" ;;
@@ -53,19 +57,30 @@ changequote([,])dnl
         *no)
           AC_DEFINE([OPEN_TRAILING_SLASH_BUG], [1],
             [Define to 1 if open() fails to recognize a trailing slash.])
-          gl_REPLACE_OPEN
+          REPLACE_OPEN=1
           ;;
       esac
       ;;
   esac
-])
-
-AC_DEFUN([gl_REPLACE_OPEN],
-[
-  AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
-  REPLACE_OPEN=1
-  AC_LIBOBJ([open])
-  gl_PREREQ_OPEN
+  dnl Replace open() for supporting the gnulib-defined fchdir() function,
+  dnl to keep fchdir's bookkeeping up-to-date.
+  m4_ifdef([gl_FUNC_FCHDIR], [
+    if test $REPLACE_OPEN = 0; then
+      gl_TEST_FCHDIR
+      if test $HAVE_FCHDIR = 0; then
+        REPLACE_OPEN=1
+      fi
+    fi
+  ])
+  dnl Replace open() for supporting the gnulib-defined O_NONBLOCK flag.
+  m4_ifdef([gl_NONBLOCKING_IO], [
+    if test $REPLACE_OPEN = 0; then
+      gl_NONBLOCKING_IO
+      if test $gl_cv_have_open_O_NONBLOCK != yes; then
+        REPLACE_OPEN=1
+      fi
+    fi
+  ])
 ])
 
 # Prerequisites of lib/open.c.