Re: [PATCH spice-gtk 05/12] meson: add vcs_tag to session init debug log

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> 
> From: Marc-André Lureau <marcandre.lureau@xxxxxxxxxx>
> 
> Use the trick recommended here to generate a vcs_tag.h at build-time:
> https://github.com/mesonbuild/meson/issues/3903
> 
> Hopefully, meson will learn to generate project version from git:
> https://github.com/mesonbuild/meson/issues/688
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@xxxxxxxxxx>
> ---
>  src/meson.build     | 12 ++++++++++++
>  src/spice-session.c |  3 ++-
>  src/vcs_tag.h.in    |  1 +
>  3 files changed, 15 insertions(+), 1 deletion(-)
>  create mode 100644 src/vcs_tag.h.in
> 
> diff --git a/src/meson.build b/src/meson.build
> index c55db44..e580429 100644
> --- a/src/meson.build
> +++ b/src/meson.build
> @@ -82,9 +82,21 @@ spice_client_glib_introspection_sources = [
>    'usb-device-manager.c',
>  ]
>  
> +vcs_conf = configuration_data()
> +vcs_conf.set('VCS_TAG', '@VCS_TAG@')
> +vcs_tag_h = vcs_tag(
> +  input : configure_file(
> +    input : 'vcs_tag.h.in',
> +    output : 'vcs_tag.h.in',
> +    configuration: vcs_conf,
> +  ),
> +  output : 'vcs_tag.h',
> +)
> +
>  spice_client_glib_sources = [
>    spice_marshals,
>    spice_client_glib_introspection_sources,
> +  vcs_tag_h,
>    'bio-gio.c',
>    'bio-gio.h',
>    'channel-base.c',
> diff --git a/src/spice-session.c b/src/spice-session.c
> index 5609c9b..d9825e3 100644
> --- a/src/spice-session.c
> +++ b/src/spice-session.c
> @@ -32,6 +32,7 @@
>  #include "spice-uri-priv.h"
>  #include "channel-playback-priv.h"
>  #include "spice-audio-priv.h"
> +#include "vcs_tag.h"
>  
>  #define IMAGES_CACHE_SIZE_DEFAULT (1024 * 1024 * 80)
>  #define MIN_GLZ_WINDOW_SIZE_DEFAULT (1024 * 1024 * 12)
> @@ -277,7 +278,7 @@ static void spice_session_init(SpiceSession *session)
>      SpiceSessionPrivate *s;
>      gchar *channels;
>  
> -    SPICE_DEBUG("New session (compiled from package " PACKAGE_STRING ")");
> +    SPICE_DEBUG("New session (package version: " VCS_TAG ")");
>      s = session->priv = spice_session_get_instance_private(session);
>  
>      channels = spice_channel_supported_string();

Why is this patch needed? Meson already generates PACKAGE_STRING in config.h

> diff --git a/src/vcs_tag.h.in b/src/vcs_tag.h.in
> new file mode 100644
> index 0000000..5d8985d
> --- /dev/null
> +++ b/src/vcs_tag.h.in
> @@ -0,0 +1 @@
> +#define VCS_TAG "@VCS_TAG@"

Frediano
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