-AC_DEFUN([LINUX_INODE_SETATTR_RETURN_TYPE],[
-AC_MSG_CHECKING(for inode_setattr return type)
-save_CPPFLAGS="$CPPFLAGS"
-CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -I${LINUX_KERNEL_PATH}/include/asm/mach-${SUBARCH} -D__KERNEL__ $CPPFLAGS"
-AC_CACHE_VAL(ac_cv_linux_func_inode_setattr_returns_int,
-[
-AC_TRY_COMPILE(
-[#include <linux/fs.h>],
-[struct inode _inode;
-struct iattr _iattr;
-int i;
-i = inode_setattr(&_inode, &_iattr);],
-ac_cv_linux_func_inode_setattr_returns_int=yes,
-ac_cv_linux_func_inode_setattr_returns_int=no)])
-AC_MSG_RESULT($ac_cv_linux_func_inode_setattr_returns_int)
-CPPFLAGS="$save_CPPFLAGS"])
+# AC_TRY_KBUILD26([INCLUDES], [FUNCTION-BODY],
+# [ACTION-IF-SUCCESS], [ACTION-IF-FAILURE])
+#
+AC_DEFUN([AC_TRY_KBUILD26],[ rm -fr conftest.dir
+ if mkdir conftest.dir &&
+ cat >conftest.dir/Makefile <<_ACEOF &&
+CFLAGS += $CPPFLAGS
+
+obj-m += conftest.o
+_ACEOF
+ cat >conftest.dir/conftest.c <<\_ACEOF &&
+#include <linux/module.h>
+$1
+
+void conftest(void)
+{
+$2
+}
+
+MODULE_LICENSE("http://www.openafs.org/dl/license10.html");
+_ACEOF
+ echo make -C $LINUX_KERNEL_PATH M=$SRCDIR_PARENT/conftest.dir modules KBUILD_VERBOSE=1 >&AS_MESSAGE_LOG_FD
+ make -C $LINUX_KERNEL_PATH M=$SRCDIR_PARENT/conftest.dir modules KBUILD_VERBOSE=1 >&AS_MESSAGE_LOG_FD 2>conftest.err
+ then [$3]
+ else
+ sed '/^ *+/d' conftest.err >&AS_MESSAGE_LOG_FD
+ echo "$as_me: failed using Makefile:" >&AS_MESSAGE_LOG_FD
+ sed 's/^/| /' conftest.dir/Makefile >&AS_MESSAGE_LOG_FD
+ echo "$as_me: and program was:" >&AS_MESSAGE_LOG_FD
+ sed 's/^/| /' conftest.dir/conftest.c >&AS_MESSAGE_LOG_FD
+ [$4]
+ fi; rm -fr conftest.err conftest.dir])
+
+
+# AC_TRY_KBUILD24([INCLUDES], [FUNCTION-BODY],
+# [ACTION-IF-SUCCESS], [ACTION-IF-FAILURE])
+#
+AC_DEFUN([AC_TRY_KBUILD24], [
+ ac_save_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="-I$LINUX_KERNEL_PATH/include -D__KERNEL__ $CPPFLAGS"
+ AC_TRY_COMPILE([$1], [$2], [$3], [$4])
+ CPPFLAGS="$ac_save_CPPFLAGS"])
+
+
+# AC_TRY_KBUILD([INCLUDES], [FUNCTION-BODY],
+# [ACTION-IF-SUCCESS], [ACTION-IF-FAILURE])
+#
+AC_DEFUN([AC_TRY_KBUILD], [
+ if test -f $LINUX_KERNEL_PATH/scripts/Makefile.build; then
+ AC_TRY_KBUILD26([$1], [$2], [$3], [$4])
+ else
+ AC_TRY_KBUILD24([$1], [$2], [$3], [$4])
+ fi])
+
+AC_DEFUN([LINUX_KERNEL_COMPILE_WORKS], [
+ AC_MSG_CHECKING([for linux kernel module build works])
+ AC_TRY_KBUILD([],[],:,AC_MSG_RESULT(no)
+ AC_MSG_FAILURE([Fix problem or use --disable-kernel-module...]))
+ AC_MSG_RESULT(yes)])