On 12/30/2025 9:28 PM, Richard Purdie wrote:
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On Tue, 2025-12-30 at 06:15 -0800, Sadineni, Harish via lists.openembedded.org
wrote:
From: Harish Sadineni <[email protected]>
The `make rustavailable` process (1) expects the Rust standard library source
files (e.g., `lib.rs`)
to be present in the `library/` directory under `rustlib/src/rust/`.
This patch ensures the required sources are available by:
- Copying the `library/` directory from the Rust source tree into
`${TMPDIR}/work-shared/rust`
during the snapshot setup.
- Installing the `library/` directory into
`${SDKPATHNATIVE}/usr/lib/rustlib/src/rust` for the
`nativesdk` class, making them available in them available in sdk
1) See the kernel tree for Documentation/rust/quick-start.rst in the section:
Requirements: Building
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/rust/quick-start.rst#n145
Signed-off-by: Harish Sadineni <[email protected]>
---
meta/recipes-devtools/rust/rust_1.91.1.bb | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/meta/recipes-devtools/rust/rust_1.91.1.bb
b/meta/recipes-devtools/rust/rust_1.91.1.bb
index a25f65f674..7644ecf2d2 100644
--- a/meta/recipes-devtools/rust/rust_1.91.1.bb
+++ b/meta/recipes-devtools/rust/rust_1.91.1.bb
@@ -63,6 +63,16 @@ do_rust_setup_snapshot () {
done
fi
}
+
+do_rust_setup_snapshot:append:class-native () {
+ if ${@bb.utils.contains('DISTRO_FEATURES', 'rust-kernel', 'true', 'false',
d)}; then
+ if [ ! -d "${TMPDIR}/work-shared/rust" ]; then
+ mkdir -p ${TMPDIR}/work-shared/rust
+ cp -r ${RUSTSRC}/library ${TMPDIR}/work-shared/rust/.
+ fi
+ fi
+}
+
addtask rust_setup_snapshot after do_unpack before do_configure
addtask do_test_compile after do_configure do_rust_gen_targets
do_rust_setup_snapshot[dirs] += "${WORKDIR}/rust-snapshot"
@@ -314,6 +324,13 @@ rust_do_install:class-nativesdk() {
export
CARGO_TARGET_${RUST_HOST_TRIPLE}_RUNNER="\$OECORE_NATIVE_SYSROOT/lib/${SDKLOADER}"
export CC_$RUST_HOST_CC="${CCACHE}${HOST_PREFIX}gcc"
EOF
+
+ if ${@bb.utils.contains('DISTRO_FEATURES', 'rust-kernel', 'true', 'false',
d)}; then
+ if [ ! -d ${D}${SDKPATHNATIVE}/usr/lib/rustlib/src/rust ]; then
+ mkdir -p ${D}${SDKPATHNATIVE}/usr/lib/rustlib/src/rust
+ cp -r --no-preserve=ownership ${S}/library
${D}${SDKPATHNATIVE}/usr/lib/rustlib/src/rust/
+ fi
+ fi
}
FILES:${PN} += "${base_prefix}/environment-setup.d"
The commit message should mention the size of these files.
Ok sure, I will add file size in v3.
Does this make sense as a distro feature or should we just do this all the time?
This is suggestion from Bruce that we take it as distro feature.
https://lists.openembedded.org/g/openembedded-core/message/225256
In future when rust is default in kernel we can change this, But till
then it is good to have it as a distro feature.
Do the nativesdk components get packaged separately? If they were, we
could then make that an SDK feature instead.
No, We are not packaging it separately.
What happens for on target kernel module development? Shouldn't there be a
target package too?
Yes, I have made the necessary changes to include Rust library for
target as well and have tested Rust-based kernel module development on
the target.
I will send updated patches with v3.
Thanks,
Harish
Cheers,
Richard
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