[Buildroot] [PATCH 1/6] package/libgl-headers: introduce as a new virtual package for providers of OpenGL-compatible headers

[Yann E. MORIN]

Jakub, All,

On 2020-05-12 15:28 +0200, Jakub Skrzypnik spake thusly:
> Currently, there can be more than one provider of OpenGL/EGL API headers (GL/gl.h, etc.)
> 
> These are usually the same everywhere, as there are universal (as universal OpenGL is) but
> to avoid excessive patching and dependency mangling, a virtual package "libgl-headers" was
> born to provide these generic API headers.
> 
> Not to confuse with private Mesa headers or other vendor-specific stuff, but these are
> always in different header files.

I don't think we need this libgl-headers package.

Instead, let's handle this like we handle the GL provider selection when
libglvnd is enabled. For example, in nvidia-driver, you'd do something
like:

        select BR2_PACKAGE_MESA3D_HEADERS if !BR2_PACKAGE_LIBGLVND

So, patches 1 and 2 in this series should be dropped, and the rest of
the series adapted accoridngly.

Regards,
Yann E. MORIN.

> Signed-off-by: Jakub Skrzypnik <jskrzypnik at novomatic-tech.com>
> ---
>  package/opengl/Config.in                      | 1 +
>  package/opengl/libgl-headers/Config.in        | 6 ++++++
>  package/opengl/libgl-headers/libgl-headers.mk | 7 +++++++
>  3 files changed, 14 insertions(+)
>  create mode 100644 package/opengl/libgl-headers/Config.in
>  create mode 100644 package/opengl/libgl-headers/libgl-headers.mk
> 
> diff --git a/package/opengl/Config.in b/package/opengl/Config.in
> index cbc001427d..7080fdb979 100644
> --- a/package/opengl/Config.in
> +++ b/package/opengl/Config.in
> @@ -1,4 +1,5 @@
>  source "package/opengl/libgl/Config.in"
> +source "package/opengl/libgl-headers/Config.in"
>  source "package/opengl/libegl/Config.in"
>  source "package/opengl/libgles/Config.in"
>  source "package/opengl/libopencl/Config.in"
> diff --git a/package/opengl/libgl-headers/Config.in b/package/opengl/libgl-headers/Config.in
> new file mode 100644
> index 0000000000..dfc3fb40fe
> --- /dev/null
> +++ b/package/opengl/libgl-headers/Config.in
> @@ -0,0 +1,6 @@
> +config BR2_PACKAGE_HAS_LIBGL_HEADERS
> +	bool
> +
> +config BR2_PACKAGE_PROVIDES_LIBGL_HEADERS
> +	string
> +	depends on BR2_PACKAGE_HAS_LIBGL_HEADERS
> diff --git a/package/opengl/libgl-headers/libgl-headers.mk b/package/opengl/libgl-headers/libgl-headers.mk
> new file mode 100644
> index 0000000000..2155868b6d
> --- /dev/null
> +++ b/package/opengl/libgl-headers/libgl-headers.mk
> @@ -0,0 +1,7 @@
> +################################################################################
> +#
> +# libgl-headers
> +#
> +################################################################################
> +
> +$(eval $(virtual-package))
> -- 
> 2.26.2
> 
> 
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