# [ACTION-IF-SUCCESS], [ACTION-IF-FAILURE])
#
AC_DEFUN([AC_TRY_KBUILD26],[ rm -fr conftest.dir
+ if test "x$ac_linux_kbuild_requires_extra_cflags" = "xyes" ; then
+ CFLAGS_PREFIX='EXTRA_'
+ fi
if mkdir conftest.dir &&
cat >conftest.dir/Makefile <<_ACEOF &&
-CFLAGS += $CPPFLAGS
+${CFLAGS_PREFIX}CFLAGS += $CPPFLAGS
obj-m += conftest.o
_ACEOF
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
+ echo make -C $LINUX_KERNEL_BUILD M=$SRCDIR_PARENT/conftest.dir modules KBUILD_VERBOSE=1 >&AS_MESSAGE_LOG_FD &&
+ make -C $LINUX_KERNEL_BUILD M=$SRCDIR_PARENT/conftest.dir modules KBUILD_VERBOSE=1 >&AS_MESSAGE_LOG_FD 2>conftest.err &&
+ ! grep -i "^WARNING: .* undefined!$" conftest.err >/dev/null 2>&1
then [$3]
else
sed '/^ *+/d' conftest.err >&AS_MESSAGE_LOG_FD
#
AC_DEFUN([AC_TRY_KBUILD24], [
ac_save_CPPFLAGS="$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"])
AC_MSG_CHECKING([for linux kernel module build works])
AC_TRY_KBUILD(
[#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/namei.h>],
+#include <linux/fs.h>],
[],:,AC_MSG_RESULT(no)
AC_MSG_FAILURE([Fix problem or use --disable-kernel-module...]))
AC_MSG_RESULT(yes)])
+
+AC_DEFUN([LINUX_KBUILD_USES_EXTRA_CFLAGS], [
+ AC_MSG_CHECKING([if linux kbuild requires EXTRA_CFLAGS])
+ save_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS=-Wall
+ AC_TRY_KBUILD(
+[#include <linux/sched.h>
+#include <linux/fs.h>],
+ [],
+ ac_linux_kbuild_requires_extra_cflags=no,
+ ac_linux_kbuild_requires_extra_cflags=yes)
+ CPPFLAGS="$save_CPPFLAGS"
+ AC_MSG_RESULT($ac_linux_kbuild_requires_extra_cflags)])