[Buildroot] [PATCH v2 1/7] package/opengl/libgbm: new virtual package

[Yann E. MORIN]

Kamel, All,

Your series has had a few comments. Most are minor, but one or two need
a bit more insights and can't be fixed while applying. As such, I've
marked it as Changes Requested in Patchwork.

Also, could you write a cover-letter that exlpains the goal behind that
series and how it is organised? A cover letter usually helps reviewers
udnerstand the bigger picture of a series, while the individual patches
describe more localised changes.

Regards,
Yann E. MORIN.

On 2021-09-29 00:37 +0200, Kamel Bouhara spake thusly:
> From: Bernd Kuhls <bernd.kuhls at t-online.de>
> 
> Kodi 18.0-Leia will implement stand-alone gbm support alongside x11 &
> wayland.  To enable building libgbm in mesa3d without x11 & wayland we
> need to create a virtual package for libgbm.
> 
> Also other packages besides mesa3d may provide libgbm.so, see
> http://patchwork.ozlabs.org/patch/647235/
> http://patchwork.ozlabs.org/patch/939703/
> 
> We also introduce two feature that shall help user choosing the version
> implemented by a libgbm provider. This foresightly avoid building package
> without having the required libgbm version (e.g. kmscube, qt5, sdl2
> etc.)
> 
> Signed-off-by: Bernd Kuhls <bernd.kuhls at t-online.de>
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
> Signed-off-by: Kamel Bouhara <kamel.bouhara at bootlin.com>
> [ Kamel : introduce gbm api features ]
> ---
> Changes v1 -> v2:
>  - Squashed patch 1/2
>  - Added more relevant comment for each features added
> 
>  package/opengl/Config.in        |  1 +
>  package/opengl/libgbm/Config.in | 24 ++++++++++++++++++++++++
>  package/opengl/libgbm/libgbm.mk |  9 +++++++++
>  3 files changed, 34 insertions(+)
>  create mode 100644 package/opengl/libgbm/Config.in
>  create mode 100644 package/opengl/libgbm/libgbm.mk
> 
> diff --git a/package/opengl/Config.in b/package/opengl/Config.in
> index cbc001427d..cfa51def45 100644
> --- a/package/opengl/Config.in
> +++ b/package/opengl/Config.in
> @@ -1,5 +1,6 @@
>  source "package/opengl/libgl/Config.in"
>  source "package/opengl/libegl/Config.in"
> +source "package/opengl/libgbm/Config.in"
>  source "package/opengl/libgles/Config.in"
>  source "package/opengl/libopencl/Config.in"
>  source "package/opengl/libopenvg/Config.in"
> diff --git a/package/opengl/libgbm/Config.in b/package/opengl/libgbm/Config.in
> new file mode 100644
> index 0000000000..7aa3efb97a
> --- /dev/null
> +++ b/package/opengl/libgbm/Config.in
> @@ -0,0 +1,24 @@
> +config BR2_PACKAGE_HAS_LIBGBM
> +	bool
> +
> +config BR2_PACKAGE_PROVIDES_LIBGBM
> +	string
> +	depends on BR2_PACKAGE_HAS_LIBGBM
> +
> +config BR2_PACKAGE_LIBGBM_HAS_FEATURE_FORMAT_MODIFIER_PLANE_COUNT
> +	bool
> +	depends on BR2_PACKAGE_HAS_LIBGBM
> +
> +# gbm implementations should select this option if they provide the
> +# format modifier plane count feature. This API was initially introduced
> +# in mesa3d version 17. A gbm implementation provides this feature if it
> +# is implement function gbm_device_get_format_modifier_plane_count.
> +
> +config BR2_PACKAGE_LIBGBM_HAS_FEATURE_DMA_BUF
> +	bool
> +	depends on BR2_PACKAGE_HAS_LIBGBM
> +
> +# gbm implementations should select this option if they provide the
> +# dma buffer feature. This API was initially introduced in mesa3d
> +# version 10. A gbm implementation provides this feature if it
> +# is implement function gbm_bo_get_fd.
> diff --git a/package/opengl/libgbm/libgbm.mk b/package/opengl/libgbm/libgbm.mk
> new file mode 100644
> index 0000000000..ecab234720
> --- /dev/null
> +++ b/package/opengl/libgbm/libgbm.mk
> @@ -0,0 +1,9 @@
> +################################################################################
> +#
> +# libgbm
> +#
> +################################################################################
> +
> +# This package requires to install a gbm.pc which needs
> +# to be provided by GBM providers.
> +$(eval $(virtual-package))
> -- 
> 2.30.2
> 
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