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Re: [PATCH] util/meson.build: fix fdmon-io_uring build


From: Philippe Mathieu-Daudé
Subject: Re: [PATCH] util/meson.build: fix fdmon-io_uring build
Date: Fri, 21 Aug 2020 18:46:15 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0

On 8/21/20 6:23 PM, Stefano Garzarella wrote:
> On Fri, Aug 21, 2020 at 06:12:45PM +0200, Philippe Mathieu-Daudé wrote:
>> Hi Stefano,
>>
>> On 8/21/20 5:48 PM, Stefano Garzarella wrote:
>>> libqemuutil.a build fails with this error:
>>>
>>>   /usr/bin/ld: libqemuutil.a(util_fdmon-io_uring.c.o): in function 
>>> `get_sqe':
>>>   qemu/build/../util/fdmon-io_uring.c:83: undefined reference to 
>>> `io_uring_get_sqe'
>>>   /usr/bin/ld: qemu/build/../util/fdmon-io_uring.c:92: undefined reference 
>>> to `io_uring_submit'
>>>   /usr/bin/ld: qemu/build/../util/fdmon-io_uring.c:96: undefined reference 
>>> to `io_uring_get_sqe'
>>>   /usr/bin/ld: libqemuutil.a(util_fdmon-io_uring.c.o): in function 
>>> `fdmon_io_uring_wait':
>>>   qemu/build/../util/fdmon-io_uring.c:289: undefined reference to 
>>> `io_uring_submit_and_wait'
>>>   /usr/bin/ld: libqemuutil.a(util_fdmon-io_uring.c.o): in function 
>>> `fdmon_io_uring_setup':
>>>   qemu/build/../util/fdmon-io_uring.c:328: undefined reference to 
>>> `io_uring_queue_init'
>>>   /usr/bin/ld: libqemuutil.a(util_fdmon-io_uring.c.o): in function 
>>> `fdmon_io_uring_destroy':
>>>   qemu/build/../util/fdmon-io_uring.c:343: undefined reference to 
>>> `io_uring_queue_exit'
>>>   collect2: error: ld returned 1 exit status
>>
>> Can you add a gitlab job to reproduce this? (Or at least explain
>> how to reproduce, so we add that job later). Thanks!
> 
> I think the only prerequisite is to install 'liburing-devel' package
> (Fedora 32) on the build system, and then fdmon-io_uring.c will be built.

Oh easy then, simply add it to PACKAGES in
tests/docker/dockerfiles/fedora.docker :)

> 
> I'll try to add a gitlab job ;-)
> 
> Thanks,
> Stefano
> 
>>
>>>
>>> This patch fix the issue adding 'linux_io_uring' dependency for
>>> fdmon-io_uring.c
>>>
>>> Fixes: a81df1b68b ("libqemuutil, qapi, trace: convert to meson")
>>> Cc: pbonzini@redhat.com
>>> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
>>> ---
>>>  util/meson.build | 2 +-
>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/util/meson.build b/util/meson.build
>>> index 23b8ad459b..e6b207a99e 100644
>>> --- a/util/meson.build
>>> +++ b/util/meson.build
>>> @@ -4,7 +4,7 @@ util_ss.add(when: 'CONFIG_ATOMIC64', if_false: 
>>> files('atomic64.c'))
>>>  util_ss.add(when: 'CONFIG_POSIX', if_true: files('aio-posix.c'))
>>>  util_ss.add(when: 'CONFIG_POSIX', if_true: files('fdmon-poll.c'))
>>>  util_ss.add(when: 'CONFIG_EPOLL_CREATE1', if_true: files('fdmon-epoll.c'))
>>> -util_ss.add(when: 'CONFIG_LINUX_IO_URING', if_true: 
>>> files('fdmon-io_uring.c'))
>>> +util_ss.add(when: ['CONFIG_LINUX_IO_URING', linux_io_uring], if_true: 
>>> files('fdmon-io_uring.c'))
>>>  util_ss.add(when: 'CONFIG_POSIX', if_true: files('compatfd.c'))
>>>  util_ss.add(when: 'CONFIG_POSIX', if_true: files('event_notifier-posix.c'))
>>>  util_ss.add(when: 'CONFIG_POSIX', if_true: files('mmap-alloc.c'))
>>>
>>
> 




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