code.delx.au - gnu-emacs/blob - m4/readlinkat.m4

   1 # serial 3
   2 # See if we need to provide readlinkat replacement.
   3
   4 dnl Copyright (C) 2009-2013 Free Software Foundation, Inc.
   5 dnl This file is free software; the Free Software Foundation
   6 dnl gives unlimited permission to copy and/or distribute it,
   7 dnl with or without modifications, as long as this notice is preserved.
   8
   9 # Written by Eric Blake.
  10
  11 AC_DEFUN([gl_FUNC_READLINKAT],
  12 [
  13   AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
  14   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
  15   AC_CHECK_FUNCS_ONCE([readlinkat])
  16   if test $ac_cv_func_readlinkat = no; then
  17     HAVE_READLINKAT=0
  18   fi
  19 ])