On 5/29/2026 3:51 AM, Richard Purdie wrote:
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On Thu, 2026-05-28 at 10:22 -0700, Sadineni, Harish via lists.openembedded.org
wrote:
From: Harish Sadineni <[email protected]>
When KERNEL_FEATURES includes 'rust', add the required host and target
packages to the SDK to support Rust kernel module development.
Host side (TOOLCHAIN_HOST_TASK):
- nativesdk-bindgen-cli
- nativesdk-libclang
- nativesdk-rust-src-lib
- packagegroup-rust-cross-canadian-${MACHINE}
Target side (TOOLCHAIN_TARGET_TASK):
- kernel-devsrc
Signed-off-by: Harish Sadineni <[email protected]>
---
meta/classes-recipe/populate_sdk_base.bbclass | 2 ++
1 file changed, 2 insertions(+)
diff --git a/meta/classes-recipe/populate_sdk_base.bbclass
b/meta/classes-recipe/populate_sdk_base.bbclass
index b427ff2761..b345a65db7 100644
--- a/meta/classes-recipe/populate_sdk_base.bbclass
+++ b/meta/classes-recipe/populate_sdk_base.bbclass
@@ -74,12 +74,14 @@ TOOLCHAIN_HOST_TASK ?= " \
packagegroup-cross-canadian-${MACHINE} \
${@bb.utils.contains('SDK_TOOLCHAIN_LANGS', 'go',
'packagegroup-go-cross-canadian-${MACHINE}', '', d)} \
${@bb.utils.contains('SDK_TOOLCHAIN_LANGS', 'rust',
'packagegroup-rust-cross-canadian-${MACHINE}', '', d)} \
+ ${@bb.utils.contains('KERNEL_FEATURES', 'rust', 'nativesdk-bindgen-cli
nativesdk-libclang nativesdk-rust-src-lib
packagegroup-rust-cross-canadian-${MACHINE}', '', d)} \
"
Similarly to the other patch, I think we need to define these things in
a packagegroup, then perhaps just include them when SDK_TOOLCHAIN_LANGS
contains rust?
Ok, i will add these in packagegroup-rust-cross-canadian and will get
included with SDK_TOOLCHAIN_LANGS += "rust".
All the dependencies are about 100 mb, So we are not adding any further
conditinal checks( KERNEL_FEATURES += "rust").
TOOLCHAIN_HOST_TASK_ATTEMPTONLY ?= ""
TOOLCHAIN_TARGET_TASK ?= " \
${@multilib_pkg_extend(d, 'packagegroup-core-standalone-sdk-target')} \
${@bb.utils.contains('SDK_TOOLCHAIN_LANGS', 'go', multilib_pkg_extend(d,
'packagegroup-go-sdk-target'), '', d)} \
${@bb.utils.contains('SDK_TOOLCHAIN_LANGS', 'rust',
multilib_pkg_extend(d, 'libstd-rs'), '', d)} \
+ ${@bb.utils.contains('KERNEL_FEATURES', 'rust', 'kernel-devsrc', '', d)} \
This seems a bit odd. Just because you've enabled rust support in the
kernel, it doesn't mean you want kernel-devsrc in the SDK?
A better way of doing this might be something like "kernel" in
SDK_TOOLCHAIN_LANGS to trigger kernel-devsrc?
As the kernel-devsrc may be needed by other dev tools also, so as you
said we implement like below for installig kernel-devsrc.
SDK_TOOLCHAIN_LANGS += " kernel"
By doing this, the rust kernel module development support in SDK enabled
with below config.
SDK_TOOLCHAIN_LANGS += " rust kernel"
Thanks,
Harish
Cheers,
Richard
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