Re: [OE-core] [PATCH v3 5/5] mesa: Fix missing GLES3 headers in SDK sysroot

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Sun, 2024-12-22 at 10:22 -0600, Tom Hochstein via lists.openembedded.org wrote:
> Building weston with core-image-weston SDK fails:
> ```
> ../libweston/renderer-gl/gl-shader-config-color-transformation.c:29:10: fatal error: GLES3/gl3.h: No such file or directory
>    29 | #include <GLES3/gl3.h>
>       |          ^~~~~~~~~~~~~
> ```
> 
> Both GLES2 and GLES3 implementations are contained in libGLESv2.so.2,
> which is packaged in libgles2-mesa. However, the headers are split
> between libgles2-mesa-dev and libgles3-mesa-dev, which is why the
> GLES3 headers end up missing in the SDK sysroot.
> 
> Add a dependency so the GLES3 headers are properly associated with
> the GLES3 implementation.
> 
> Signed-off-by: Tom Hochstein <tom.hochstein@oss.nxp.com>
> ---
>  meta/recipes-graphics/mesa/mesa.inc | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/meta/recipes-graphics/mesa/mesa.inc b/meta/recipes-graphics/mesa/mesa.inc
> index 9fdf496e8b..84490158f1 100644
> --- a/meta/recipes-graphics/mesa/mesa.inc
> +++ b/meta/recipes-graphics/mesa/mesa.inc
> @@ -233,6 +233,10 @@ DEV_PKG_DEPENDENCY = ""
>  # development package of libgles3.
>  RDEPENDS:libgles3-mesa-dev += "libgles2-mesa-dev"
>  
> +# GLES2 and GLES3 implementations are packaged in a single library in libgles2-mesa.
> +# Add a dependency so the GLES3 dev package is associated with its implementation.
> +RDEPENDS:libgles2-mesa-dev += "libgles3-mesa-dev"
> +
>  RDEPENDS:libopencl-mesa += "${@bb.utils.contains('PACKAGECONFIG', 'opencl', 'libclc spirv-tools', '', d)}"

This doesn't quite make sense to me. The line above that RDEPENDS is
adding a dependency in the opposite direction and will effectively make
one package uninstallable without the other.

The question is does the libgles2-mesa-dev package need the libgles3-
mesa-dev package? If not, this is not the right way to solve the
problem you're seeing.

Cheers,

Richard