From 716cca7ed808aee2e639d06d8d5fcdd71de12b2b Mon Sep 17 00:00:00 2001
From: Andrew Deason <adeason@sinenomine.net>
Date: Thu, 30 Aug 2012 08:06:33 -0400
Subject: [PATCH] autoconf: add AC_CHECK_LINUX_TYPE macro

add a macro which looks for a given type in a given linux kernel
header file

Reviewed-on: http://gerrit.openafs.org/8021
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Marc Dionne <marc.c.dionne@gmail.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>
(cherry picked from commit f87d49cd17fbf6aa9465faadac823ed8d0510a16)

Change-Id: Idc6cc79d9410149f6faeb867f878724beaa30793
Reviewed-on: http://gerrit.openafs.org/8788
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Paul Smeddle <paul.smeddle@gmail.com>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Tested-by: Stephan Wiesand <stephan.wiesand@desy.de>
---
 src/cf/linux-test1.m4 | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/cf/linux-test1.m4 b/src/cf/linux-test1.m4
index 3141a4478..f7176d2d4 100644
--- a/src/cf/linux-test1.m4
+++ b/src/cf/linux-test1.m4
@@ -125,6 +125,16 @@ AC_DEFUN([AC_CHECK_LINUX_FUNC],
 		   [Define if your kernel has the $1 function])])
  ])
 
+dnl AC_CHECK_LINUX_TYPE([type], [includes])
+AC_DEFUN([AC_CHECK_LINUX_TYPE],
+ [AC_CHECK_LINUX_BUILD([for $1],
+                       [ac_cv_linux_type_$1_exists],
+                       [#include <linux/$2>],
+                       [$1 _test; ],
+                       AS_TR_CPP(HAVE_LINUX_$1),
+                       [Define if kernel defines $1])
+ ])
+
 dnl AC_CHECK_LINUX_STRUCT([structure], [element], [includes])
 AC_DEFUN([AC_CHECK_LINUX_STRUCT],
  [AC_CHECK_LINUX_TYPED_STRUCT([struct $1], [$2], [$3])
-- 
2.39.5