From 5386bfa1638f357ffb791191ee595b6c7a10dffb Mon Sep 17 00:00:00 2001
From: Derrick Brashear <shadow@dementia.org>
Date: Sat, 8 Dec 2007 17:46:09 +0000
Subject: [PATCH] DEVEL15-linux24-kernel-configure-test-20071208

LICENSE IPL10

on linux 2.4 the try kbuild macro needs to try harder to notice what
symbols we don't have


(cherry picked from commit 55e581824fceea149b9a48ee928aa76e97c009a8)
---
 src/cf/linux-test1.m4 | 6 ++++--
 src/cf/linux-test4.m4 | 3 +--
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/cf/linux-test1.m4 b/src/cf/linux-test1.m4
index a330abafb..2751a14cf 100644
--- a/src/cf/linux-test1.m4
+++ b/src/cf/linux-test1.m4
@@ -46,8 +46,10 @@ _ACEOF
 #
 AC_DEFUN([AC_TRY_KBUILD24], [
   ac_save_CPPFLAGS="$CPPFLAGS"
-  CPPFLAGS="-I$LINUX_KERNEL_PATH/include -D__KERNEL__ $CPPFLAGS"
-  AC_TRY_COMPILE([$1], [$2], [$3], [$4])
+  CPPFLAGS="-I$LINUX_KERNEL_PATH/include -D__KERNEL__ -Werror-implicit-function-declaration $CPPFLAGS"
+  AC_TRY_COMPILE([
+#include <linux/kernel.h>
+$1], [$2], [$3], [$4])
   CPPFLAGS="$ac_save_CPPFLAGS"])
 
 
diff --git a/src/cf/linux-test4.m4 b/src/cf/linux-test4.m4
index 85e612f71..e0e1bb814 100644
--- a/src/cf/linux-test4.m4
+++ b/src/cf/linux-test4.m4
@@ -971,8 +971,7 @@ AC_DEFUN([LINUX_SYSCTL_TABLE_CHECKING], [
   AC_CACHE_VAL([ac_cv_linux_sysctl_table_checking], [
     AC_TRY_KBUILD(
 [#include <linux/sysctl.h>],
-[extern int sysctl_check_table(struct ctl_table *t);
-sysctl_check_table(NULL);],
+[ sysctl_check_table(NULL);],
       ac_cv_linux_sysctl_table_checking=yes,
       ac_cv_linux_sysctl_table_checking=no)])
   AC_MSG_RESULT($ac_cv_linux_sysctl_table_checking)])
-- 
2.39.5