aboutsummaryrefslogtreecommitdiffstats
path: root/config/kernel-clear-inode.m4
diff options
context:
space:
mode:
authorEtienne Dechamps <[email protected]>2012-07-25 14:38:58 -0700
committerBrian Behlendorf <[email protected]>2012-07-26 13:42:57 -0700
commit705741827ab55e7d92c3eb74f332a5ddd24971b5 (patch)
tree1b8ca75c3355fb84cba4fddd0c7b4852be95d763 /config/kernel-clear-inode.m4
parentfc88a6dda92a4fc00491a8afa24d144cc94063e4 (diff)
When checking for symbol exports, try compiling.
This patch adds a new autoconf function: ZFS_LINUX_TRY_COMPILE_SYMBOL. This new function does the following: - Call LINUX_TRY_COMPILE with the specified parameters. - If unsuccessful, return false. - If successful and we're configuring with --enable-linux-builtin, return true. - Else, call CHECK_SYMBOL_EXPORT with the specified parameters and return the result. All calls to CHECK_SYMBOL_EXPORT are converted to LINUX_TRY_COMPILE_SYMBOL so that the tests work even when configuring for builtin on a kernel which doesn't have loadable module support, or hasn't been built yet. Signed-off-by: Brian Behlendorf <[email protected]> Issue #851
Diffstat (limited to 'config/kernel-clear-inode.m4')
-rw-r--r--config/kernel-clear-inode.m419
1 files changed, 12 insertions, 7 deletions
diff --git a/config/kernel-clear-inode.m4 b/config/kernel-clear-inode.m4
index e3eace2b2..8d880fcd8 100644
--- a/config/kernel-clear-inode.m4
+++ b/config/kernel-clear-inode.m4
@@ -19,11 +19,16 @@ dnl # Therefore, to ensure we have the correct API we only allow the
dnl # clear_inode() compatibility code to be defined iff the evict_inode()
dnl # functionality is also detected.
dnl #
-AC_DEFUN([ZFS_AC_KERNEL_CLEAR_INODE], [
- ZFS_CHECK_SYMBOL_EXPORT(
- [clear_inode],
- [fs/inode.c],
- [AC_DEFINE(HAVE_CLEAR_INODE, 1,
- [clear_inode() is available])],
- [])
+AC_DEFUN([ZFS_AC_KERNEL_CLEAR_INODE],
+ [AC_MSG_CHECKING([whether clear_inode() is available])
+ ZFS_LINUX_TRY_COMPILE_SYMBOL([
+ #include <linux/fs.h>
+ ], [
+ clear_inode(NULL);
+ ], [clear_inode], [fs/inode.c], [
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_CLEAR_INODE, 1, [clear_inode() is available])
+ ], [
+ AC_MSG_RESULT(no)
+ ])
])