config/kernel-kstrtoul.m4

   1 dnl #
   2 dnl # 2.6.39 API change
   3 dnl #
   4 dnl # 33ee3b2e2eb9 kstrto*: converting strings to integers done (hopefully) right
   5 dnl #
   6 dnl # If kstrtoul() doesn't exist, fallback to use strict_strtoul() which has
   7 dnl # existed since 2.6.25.
   8 dnl #
   9 AC_DEFUN([ZFS_AC_KERNEL_KSTRTOUL], [
  10         AC_MSG_CHECKING([whether kstrtoul() exists])
  11         ZFS_LINUX_TRY_COMPILE([
  12                 #include <linux/kernel.h>
  13         ],[
  14                 int ret __attribute__ ((unused)) = kstrtoul(NULL, 10, NULL);
  15         ],[
  16                 AC_MSG_RESULT(yes)
  17                 AC_DEFINE(HAVE_KSTRTOUL, 1, [kstrtoul() exists])
  18         ],[
  19                 AC_MSG_RESULT(no)
  20         ])
  21 ])