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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 18:12:45 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0

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!

> 
> 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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