2024. 08. 02. 19:52 keltezéssel, Peter Marko via lists.openembedded.org írta:
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From: [email protected] <openembedded-
[email protected]> On Behalf Of Alexander Kanavin via
lists.openembedded.org
Sent: Thursday, March 16, 2023 10:41
To: [email protected]
Cc: Kanavin, Alexander (EXT) (Linutronix GmbH) <[email protected]>
Subject: [OE-core] [PATCH 3/6] mesa: enable a rich set of drivers for native
builds
Without this, the only available driver would be swrast
(without llvmpipe) which is far too slow to be practical,
and so qemu wouldn't be able to perform accelerated graphics.
The one major dependency pulled in by this change is llvm-native
which takes just under three minutes on my machine. If this is
undesitable, opengl can be removed from DISTRO_FEATURES_NATIVE.
I was just hit by this commit when migrating our gui layers from kirkstone to
scarthgap.
We include clang-native in our sdk and this creates conflict:
ERROR: product-image-sdk-1.0-r0 do_prepare_recipe_sysroot: The file
/usr/bin/llvm-lto2 is installed by both llvm-native and clang-native, aborting
I had to create mesa_%.bbappend which replaces llvm with clang
PACKAGECONFIG[gallium-llvm] = "-Dllvm=enabled -Dshared-llvm=enabled,
-Dllvm=disabled, clang clang-native elfutils"
But bbappends are bad idea for config changes and should be only used as last
resort so I'd like to solve it via distro config.
Also update-alternatives doesn't work for native recipes I think.
Any idea how to solve this in a nice way?
One idea from me would be to create global LLVM_PROVIDER and
LLVM_NATIVE_PROVIDER variables which could be automatically switched in
meta-clang.
Wdyt?
This is already documented in meta-clang.
Though it's not automatic, you have to add it manually to
your custom distro's configuration or local.conf.
https://github.com/kraj/meta-clang?tab=readme-ov-file#providing-llvm
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