When checking for symbol exports, try compiling.

[zfs.git] / config / kernel-check-disk-size-change.m4

diff --git a/config/kernel-check-disk-size-change.m4 b/config/kernel-check-disk-size-change.m4
index 1a730c0..ea5c75f 100644 (file)
--- a/config/kernel-check-disk-size-change.m4
+++ b/config/kernel-check-disk-size-change.m4
@@ -2,11 +2,17 @@ dnl #
 dnl # 2.6.28 API change
 dnl # Added check_disk_size_change() helper function.
 dnl #
-AC_DEFUN([ZFS_AC_KERNEL_CHECK_DISK_SIZE_CHANGE], [
-       ZFS_CHECK_SYMBOL_EXPORT(
-               [check_disk_size_change],
-               [fs/block_dev.c],
-               [AC_DEFINE(HAVE_CHECK_DISK_SIZE_CHANGE, 1,
-               [check_disk_size_change() is available])],
-               [])
+AC_DEFUN([ZFS_AC_KERNEL_CHECK_DISK_SIZE_CHANGE],
+       [AC_MSG_CHECKING([whether check_disk_size_change() is available])
+       ZFS_LINUX_TRY_COMPILE_SYMBOL([
+               #include <linux/fs.h>
+       ], [
+               check_disk_size_change(NULL, NULL);
+       ], [check_disk_size_change], [fs/block_dev.c], [
+               AC_MSG_RESULT(yes)
+               AC_DEFINE(HAVE_CHECK_DISK_SIZE_CHANGE, 1,
+                         [check_disk_size_change() is available])
+       ], [
+               AC_MSG_RESULT(no)
+       ])
 ])