On 18/07/2023 18.44, Matt Turner wrote:
> From: Jonas Rakebrandt <xarblu@protonmail.com>
> 
> This works similar to cmake.eclass's ${CMAKE_VERBOSE}.
> 
> Closes: https://github.com/gentoo/gentoo/pull/28942
> Signed-off-by: Jonas Rakebrandt <xarblu@protonmail.com>
> Signed-off-by: Matt Turner <mattst88@gentoo.org>
> ---
>   eclass/meson.eclass | 15 +++++++++++++--
>   1 file changed, 13 insertions(+), 2 deletions(-)
> 
> diff --git a/eclass/meson.eclass b/eclass/meson.eclass
> index 2c274b213191..3b30f66bf30a 100644
> --- a/eclass/meson.eclass
> +++ b/eclass/meson.eclass
> @@ -55,6 +55,12 @@ BDEPEND=">=dev-util/meson-0.62.2
>   # Build directory, location where all generated files should be placed.
>   # If this isn't set, it defaults to ${WORKDIR}/${P}-build.
>   
> +# @ECLASS_VARIABLE: MESON_VERBOSE
> +# @USER_VARIABLE
> +# @DESCRIPTION:
> +# Set to OFF to disable verbose messages during compilation
> +: "${MESON_VERBOSE:=ON}"
> +
>   # @ECLASS_VARIABLE: EMESON_BUILDTYPE
>   # @DESCRIPTION:
>   # The buildtype value to pass to meson setup.
> @@ -385,10 +391,15 @@ meson_src_compile() {
>   		-C "${BUILD_DIR}"
>   		--jobs "$(makeopts_jobs "${MAKEOPTS}" 0)"
>   		--load-average "$(makeopts_loadavg "${MAKEOPTS}" 0)"
> -		--verbose
> -		"$@"
>   	)
>   
> +	case ${MESON_VERBOSE} in
> +		OFF) ;;
> +		*) mesoncompileargs+=( --verbose ) ;;
> +	esac

No strong opinion, just to educate myself, but is there an advantage of 
using case/easc over if/fi here?

That is

if [[ ${MESON_VERBOSE} != off ]]; then
     mesoncompileargs+=( --verbose )
fi

or even the shell-style short idiom using ||.

- Flow