[Samba] ceph is disabled even if explicitly asked to be enabled

[Michael Tokarev]

31.07.2024 07:55, Anoop C S via samba wrote:
> On Tue, 2024-07-30 at 21:12 +0300, Michael Tokarev via samba wrote:
>> Hi!
>>
>> Building current samba on debian bullseye with
>>
>>     ./configure --enable-cephfs
>>
>> results in the following output:
>>
>> Checking for header cephfs/libcephfs.h              : yes
>> Checking for library cephfs                         : yes
>> Checking for ceph_statx in cephfs                   : ok
>> Checking for ceph_openat in cephfs                  : not found
>> Ceph support disabled due to --without-acl-support
>>            or lack of ceph_statx/ceph_openat support
>> ...
>>
>> but despite --enable-cephfs option, ./configure succeeds and
>> subsequent
>> build succeeds too, just vfs/ceph.so etc aren't being produced.
>>
>> This seems like (configure) bug.
> 
> I hope the description(and hyperlinked discussion) from
> https://gitlab.com/samba-team/samba/-/merge_requests/3715 explains the
> situation with upcoming v4.21 in detail. Basically we decided to go
> with the mandate of requiring certain APIs from libcephfs. Those APIs
> have been around since v17 and it is the least among the non-EOL(not
> archived) versions of Ceph as
> per https://docs.ceph.com/en/latest/releases/#ceph-releases-index .

The problem here is not requirement of a modern ceph - this is entirely
okay.

The problem is that ceph is disabled by configure even if it is explicitly
enabled by the command-line switch.  Configure should fail here instead
of continuing, - *that* is the problem.

Thanks,

/mjt

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