maint: update copyright

[gnulib.git] / m4 / close.m4

diff --git a/m4/close.m4 b/m4/close.m4
index fcc9fb1..68510c5 100644 (file)
--- a/m4/close.m4
+++ b/m4/close.m4
@@ -1,25 +1,33 @@
-# close.m4 serial 2
-dnl Copyright (C) 2008 Free Software Foundation, Inc.
+# close.m4 serial 8
+dnl Copyright (C) 2008-2014 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_FUNC_CLOSE],
 [
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([gl_MSVC_INVAL])
+  if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+    REPLACE_CLOSE=1
+  fi
   m4_ifdef([gl_PREREQ_SYS_H_WINSOCK2], [
     gl_PREREQ_SYS_H_WINSOCK2
     if test $UNISTD_H_HAVE_WINSOCK2_H = 1; then
-      gl_REPLACE_CLOSE
+      dnl Even if the 'socket' module is not used here, another part of the
+      dnl application may use it and pass file descriptors that refer to
+      dnl sockets to the close() function. So enable the support for sockets.
+      REPLACE_CLOSE=1
+    fi
+  ])
+  dnl Replace close() for supporting the gnulib-defined fchdir() function,
+  dnl to keep fchdir's bookkeeping up-to-date.
+  m4_ifdef([gl_FUNC_FCHDIR], [
+    if test $REPLACE_CLOSE = 0; then
+      gl_TEST_FCHDIR
+      if test $HAVE_FCHDIR = 0; then
+        REPLACE_CLOSE=1
+      fi
     fi
   ])
-])
-
-AC_DEFUN([gl_REPLACE_CLOSE],
-[
-  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
-  if test $REPLACE_CLOSE != 1; then
-    AC_LIBOBJ([close])
-  fi
-  REPLACE_CLOSE=1
-  gl_REPLACE_FCLOSE
 ])