X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Flchown.m4;h=743ed5b0c3f1a145be71d5590da9ac1706f6f33d;hb=2d49283816a71d5451b43c7c9d1c80308c3aef73;hp=68398ed7a04c446c8c0e8f700dc095f840860d1f;hpb=ad605daf6131aa99227d3b85e648fa02f5387989;p=gnulib.git

diff --git a/m4/lchown.m4 b/m4/lchown.m4
index 68398ed7a..743ed5b0c 100644
--- a/m4/lchown.m4
+++ b/m4/lchown.m4
@@ -1,10 +1,38 @@
-#serial 1
+# serial 17
+# Determine whether we need the lchown wrapper.
+
+dnl Copyright (C) 1998, 2001, 2003-2007, 2009-2014 Free Software Foundation,
+dnl 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 From Jim Meyering.
-dnl Provide lchown on systems that lack it.
+dnl Provide lchown on systems that lack it, and work around bugs
+dnl on systems that have it.
 
-AC_DEFUN(jm_FUNC_LCHOWN,
+AC_DEFUN([gl_FUNC_LCHOWN],
 [
-  AC_REQUIRE([AC_TYPE_UID_T])
-  AC_REPLACE_FUNCS(lchown)
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([gl_FUNC_CHOWN])
+  AC_CHECK_FUNCS_ONCE([lchmod])
+  AC_CHECK_FUNCS([lchown])
+  if test $ac_cv_func_lchown = no; then
+    HAVE_LCHOWN=0
+  else
+    dnl Trailing slash and ctime bugs in chown also occur in lchown.
+    case "$gl_cv_func_chown_slash_works" in
+      *yes) ;;
+      *)
+        REPLACE_LCHOWN=1
+        ;;
+    esac
+    case "$gl_cv_func_chown_ctime_works" in
+      *yes) ;;
+      *)
+        REPLACE_LCHOWN=1
+        ;;
+    esac
+  fi
 ])