Re: [OE-core] [PATCH 1/3] classes/meson: use ninja explicitly when compiling

["Mathieu Dubois-Briand" <mathieu.dubois-briand@bootlin.com>]

On Mon Jun 29, 2026 at 4:15 PM CEST, Ross Burton via lists.openembedded.org wrote:
> "meson compile" is essentially a glorified wrapper around calling ninja
> that doesn't support all of the options that ninja does, so calling it
> directly means builds are fractionally faster and we get direct control
> over the flags that ninja is passed.
>
> A longer rationale can be found in the Gentoo change by Eli Schwartz
> that caused this patch, who is both a Gentoo and Meson developer:
>
> https://github.com/gentoo/gentoo/commit/66011abd663671947fe07835f0d9cc360f5de317
>
> The only change is that the compile target doesn't support the optional
> convenience target type, but this is rarely used.
>
> Signed-off-by: Ross Burton <ross.burton@arm.com>
> ---
>  meta/classes-recipe/meson.bbclass | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/meta/classes-recipe/meson.bbclass b/meta/classes-recipe/meson.bbclass
> index 9bed293603c..a4643591103 100644
> --- a/meta/classes-recipe/meson.bbclass
> +++ b/meta/classes-recipe/meson.bbclass
> @@ -180,7 +180,7 @@ meson_do_configure() {
>  
>  do_compile[progress] = "outof:^\[(\d+)/(\d+)\]\s+"
>  meson_do_compile() {
> -    meson compile -v ${PARALLEL_MAKE} ${MESON_TARGET}
> +    ninja --verbose ${PARALLEL_MAKE} ${MESON_TARGET}
>  }
>  
>  meson_do_install() {

Hi Ross, Hi Daniel,

I just note this this patch is conflicting with the one from Daniel [1],
as it does use 'MESON_TARGET = "systemd-hwdb:executable"'. Depending on
which patch is merged first, the other might have to be rebased and
fixed.

[1]: https://lore.kernel.org/all/20260626073812.769193-4-daniel.turull@ericsson.com/

Thanks,
Mathieu

-- 
Mathieu Dubois-Briand, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com