File: lchown.m4

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# serial 17
# Determine whether we need the lchown wrapper.

dnl Copyright (C) 1998, 2001, 2003-2007, 2009-2015 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, and work around bugs
dnl on systems that have it.

AC_DEFUN([gl_FUNC_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
])