Re: [PATCH v3 4/4] configure: add --disable-colo-proxy option

[Lukas Straub <lukasstraub2@web.de>]

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On Thu, 27 Apr 2023 23:29:46 +0300
Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> wrote:

> Add option to not build filter-mirror, filter-rewriter and
> colo-compare when they are not needed.
> 
> There could be more agile configuration, for example add separate
> options for each filter, but that may be done in future on demand. The
> aim of this patch is to make possible to disable the whole COLO Proxy
> subsystem.
> 
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
> ---
>  meson_options.txt             |  2 ++
>  net/meson.build               | 14 ++++++++++----
>  scripts/meson-buildoptions.sh |  3 +++
>  stubs/colo-compare.c          |  7 +++++++
>  stubs/meson.build             |  1 +
>  5 files changed, 23 insertions(+), 4 deletions(-)
>  create mode 100644 stubs/colo-compare.c
> 
> diff --git a/meson_options.txt b/meson_options.txt
> index 2471dd02da..b59e7ae342 100644
> --- a/meson_options.txt
> +++ b/meson_options.txt
> @@ -289,6 +289,8 @@ option('live_block_migration', type: 'feature', value: 'auto',
>         description: 'block migration in the main migration stream')
>  option('replication', type: 'feature', value: 'auto',
>         description: 'replication support')
> +option('colo_proxy', type: 'feature', value: 'auto',
> +       description: 'colo-proxy support')
>  option('bochs', type: 'feature', value: 'auto',
>         description: 'bochs image format support')
>  option('cloop', type: 'feature', value: 'auto',
> diff --git a/net/meson.build b/net/meson.build
> index 87afca3e93..4cfc850c69 100644
> --- a/net/meson.build
> +++ b/net/meson.build
> @@ -1,13 +1,9 @@
>  softmmu_ss.add(files(
>    'announce.c',
>    'checksum.c',
> -  'colo-compare.c',
> -  'colo.c',
>    'dump.c',
>    'eth.c',
>    'filter-buffer.c',
> -  'filter-mirror.c',
> -  'filter-rewriter.c',
>    'filter.c',
>    'hub.c',
>    'net-hmp-cmds.c',
> @@ -19,6 +15,16 @@ softmmu_ss.add(files(
>    'util.c',
>  ))
>  
> +if get_option('replication').allowed() or \
> +    get_option('colo_proxy').allowed()
> +  softmmu_ss.add(files('colo-compare.c'))
> +  softmmu_ss.add(files('colo.c'))
> +endif
> +
> +if get_option('colo_proxy').allowed()
> +  softmmu_ss.add(files('filter-mirror.c', 'filter-rewriter.c'))
> +endif
> +

The last discussion didn't really come to a conclusion, but I still
think that 'filter-mirror.c' (which also contains filter-redirect)
should be left unchanged.

>  softmmu_ss.add(when: 'CONFIG_TCG', if_true: files('filter-replay.c'))
>  
>  if have_l2tpv3
> diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh
> index d4369a3ad8..036047ce6f 100644
> --- a/scripts/meson-buildoptions.sh
> +++ b/scripts/meson-buildoptions.sh
> @@ -83,6 +83,7 @@ meson_options_help() {
>    printf "%s\n" '  capstone        Whether and how to find the capstone library'
>    printf "%s\n" '  cloop           cloop image format support'
>    printf "%s\n" '  cocoa           Cocoa user interface (macOS only)'
> +  printf "%s\n" '  colo-proxy      colo-proxy support'
>    printf "%s\n" '  coreaudio       CoreAudio sound support'
>    printf "%s\n" '  crypto-afalg    Linux AF_ALG crypto backend driver'
>    printf "%s\n" '  curl            CURL block device driver'
> @@ -236,6 +237,8 @@ _meson_option_parse() {
>      --disable-cloop) printf "%s" -Dcloop=disabled ;;
>      --enable-cocoa) printf "%s" -Dcocoa=enabled ;;
>      --disable-cocoa) printf "%s" -Dcocoa=disabled ;;
> +    --enable-colo-proxy) printf "%s" -Dcolo_proxy=enabled ;;
> +    --disable-colo-proxy) printf "%s" -Dcolo_proxy=disabled ;;
>      --enable-coreaudio) printf "%s" -Dcoreaudio=enabled ;;
>      --disable-coreaudio) printf "%s" -Dcoreaudio=disabled ;;
>      --enable-coroutine-pool) printf "%s" -Dcoroutine_pool=true ;;
> diff --git a/stubs/colo-compare.c b/stubs/colo-compare.c
> new file mode 100644
> index 0000000000..ec726665be
> --- /dev/null
> +++ b/stubs/colo-compare.c
> @@ -0,0 +1,7 @@
> +#include "qemu/osdep.h"
> +#include "qemu/notify.h"
> +#include "net/colo-compare.h"
> +
> +void colo_compare_cleanup(void)
> +{
> +}
> diff --git a/stubs/meson.build b/stubs/meson.build
> index 8412cad15f..a56645e2f7 100644
> --- a/stubs/meson.build
> +++ b/stubs/meson.build
> @@ -46,6 +46,7 @@ stub_ss.add(files('target-monitor-defs.c'))
>  stub_ss.add(files('trace-control.c'))
>  stub_ss.add(files('uuid.c'))
>  stub_ss.add(files('colo.c'))
> +stub_ss.add(files('colo-compare.c'))
>  stub_ss.add(files('vmstate.c'))
>  stub_ss.add(files('vm-stop.c'))
>  stub_ss.add(files('win32-kbd-hook.c'))



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