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Mon, 5 Jan 2026 16:24:40 +0000 Message-ID: Date: Mon, 5 Jan 2026 21:54:30 +0530 User-Agent: Mozilla Thunderbird Subject: Re: [OE-core] [PATCH v2 03/15] rust: install Rust library sources for 'make rustavailable' support To: Richard Purdie , openembedded-core@lists.openembedded.org Cc: Randy.MacLeod@windriver.com, Sundeep.Kokkonda@windriver.com, bruce.ashfield@gmail.com, yoann.congal@smile.fr, elmehdi.younes@smile.fr References: <20251230141540.1974380-1-Harish.Sadineni@windriver.com> <20251230141540.1974380-4-Harish.Sadineni@windriver.com> Content-Language: en-US From: Harish Sadineni In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MA5P287CA0127.INDP287.PROD.OUTLOOK.COM (2603:1096:a01:1d0::12) To PH0PR11MB5658.namprd11.prod.outlook.com (2603:10b6:510:e2::23) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH0PR11MB5658:EE_|DM6PR11MB4691:EE_ X-MS-Office365-Filtering-Correlation-Id: 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https://lists.openembedded.org/g/openembedded-core/message/228871 On 12/30/2025 9:28 PM, Richard Purdie wrote: > CAUTION: This email comes from a non Wind River email account! > Do not click links or open attachments unless you recognize the sender and know the content is safe. > > On Tue, 2025-12-30 at 06:15 -0800, Sadineni, Harish via lists.openembedded.org wrote: >> From: Harish Sadineni >> >> 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 >> --- >> 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