mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-17 18:11:00 +03:00
705741827a
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 <behlendorf1@llnl.gov> Issue #851
22 lines
717 B
Plaintext
22 lines
717 B
Plaintext
dnl #
|
|
dnl # 2.6.34 API change
|
|
dnl # The bdi_setup_and_register() helper function is avilable and
|
|
dnl # exported by the kernel. This is a trivial helper function but
|
|
dnl # using it significantly simplifies the code surrounding setting
|
|
dnl # up and tearing down the bdi structure.
|
|
dnl #
|
|
AC_DEFUN([ZFS_AC_KERNEL_BDI_SETUP_AND_REGISTER],
|
|
[AC_MSG_CHECKING([whether bdi_setup_and_register() is available])
|
|
ZFS_LINUX_TRY_COMPILE_SYMBOL([
|
|
#include <linux/backing-dev.h>
|
|
], [
|
|
bdi_setup_and_register(NULL, NULL, 0);
|
|
], [bdi_setup_and_register], [mm/backing-dev.c], [
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_BDI_SETUP_AND_REGISTER, 1,
|
|
[bdi_setup_and_register() is available])
|
|
], [
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|