NEWS.stable: log cherry-pick [e446f25]->[c092018] relocatable-shell: Update suggested...

[gnulib.git] / m4 / chdir-long.m4

diff --git a/m4/chdir-long.m4 b/m4/chdir-long.m4
index eef75d7..8ed436d 100644 (file)
--- a/m4/chdir-long.m4
+++ b/m4/chdir-long.m4
@@ -1,4 +1,4 @@
-#serial 4
+#serial 15
 
 # Use Gnulib's robust chdir function.
 # It can handle arbitrarily long directory names, which means
@@ -6,7 +6,7 @@
 # never fails with ENAMETOOLONG.
 # Arrange to compile chdir-long.c only on systems that define PATH_MAX.
 
-dnl Copyright (C) 2004 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2007, 2009-2014 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.
@@ -15,27 +15,16 @@ dnl with or without modifications, as long as this notice is preserved.
 
 AC_DEFUN([gl_FUNC_CHDIR_LONG],
 [
-  AC_LIBSOURCES([chdir-long.c, chdir-long.h])
-  AC_CACHE_CHECK([whether this system has a definition of PATH_MAX],
-    gl_have_path_max_definition,
-    [AC_EGREP_CPP([have_path_max_definition],
-                  [#include <unistd.h>
-#include <limits.h>
+  AC_REQUIRE([gl_PATHMAX_SNIPPET_PREREQ])
+  AC_CACHE_CHECK([whether this system has an arbitrary file name length limit],
+    gl_cv_have_arbitrary_file_name_length_limit,
+    [AC_EGREP_CPP([have_arbitrary_file_name_length_limit],
+                  gl_PATHMAX_SNIPPET[
 #ifdef PATH_MAX
-have_path_max_definition
+have_arbitrary_file_name_length_limit
 #endif],
-    gl_have_path_max_definition=yes,
-    gl_have_path_max_definition=no)])
-
-  if test $gl_have_path_max_definition; then
-    AC_LIBOBJ([chdir-long])
-    gl_PREREQ_CHDIR_LONG
-  fi
+    gl_cv_have_arbitrary_file_name_length_limit=yes,
+    gl_cv_have_arbitrary_file_name_length_limit=no)])
 ])
 
-AC_DEFUN([gl_PREREQ_CHDIR_LONG],
-[
-  AM_STDBOOL_H
-  gl_FUNC_MEMPCPY
-  gl_FUNC_OPENAT
-])
+AC_DEFUN([gl_PREREQ_CHDIR_LONG], [:])