When checking for symbol exports, try compiling.

[zfs.git] / config / kernel-d-obtain-alias.m4

diff --git a/config/kernel-d-obtain-alias.m4 b/config/kernel-d-obtain-alias.m4
index d80a1c8..2b4b11e 100644 (file)
--- a/config/kernel-d-obtain-alias.m4
+++ b/config/kernel-d-obtain-alias.m4
@@ -2,11 +2,17 @@ dnl #
 dnl # 2.6.28 API change
 dnl # Added d_obtain_alias() helper function.
 dnl #
-AC_DEFUN([ZFS_AC_KERNEL_D_OBTAIN_ALIAS], [
-       ZFS_CHECK_SYMBOL_EXPORT(
-               [d_obtain_alias],
-               [fs/dcache.c],
-               [AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
-               [d_obtain_alias() is available])],
-               [])
+AC_DEFUN([ZFS_AC_KERNEL_D_OBTAIN_ALIAS],
+       [AC_MSG_CHECKING([whether d_obtain_alias() is available])
+       ZFS_LINUX_TRY_COMPILE_SYMBOL([
+               #include <linux/dcache.h>
+       ], [
+               d_obtain_alias(NULL);
+       ], [d_obtain_alias], [fs/dcache.c], [
+               AC_MSG_RESULT(yes)
+               AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
+                         [d_obtain_alias() is available])
+       ], [
+               AC_MSG_RESULT(no)
+       ])
 ])