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[RFC,v4,05/11] kernel-yocto: stage rustlib sources for linux-yocto 'make rustavailable' support

Message ID 20251120152649.1128685-6-Harish.Sadineni@windriver.com
State New
Headers show
Series Enable rust support for linux kernel | expand

Commit Message

Harish Sadineni Nov. 20, 2025, 3:26 p.m. UTC 
From: Harish Sadineni <Harish.Sadineni@windriver.com>

When building the Linux kernel with Rust support enabled (e.g., via `make rustavailable`),
the build system expects the Rust standard library sources to be available under:
${STAGING_DIR_NATIVE}/usr/lib/rustlib/src/rust

Signed-off-by: Harish Sadineni <Harish.Sadineni@windriver.com>
---
 meta/classes-recipe/kernel-yocto.bbclass | 7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/meta/classes-recipe/kernel-yocto.bbclass b/meta/classes-recipe/kernel-yocto.bbclass
index e53bf15194..2584cadf0d 100644
--- a/meta/classes-recipe/kernel-yocto.bbclass
+++ b/meta/classes-recipe/kernel-yocto.bbclass
@@ -465,6 +465,13 @@  do_kernel_configme[depends] += "bc-native:do_populate_sysroot bison-native:do_po
 do_kernel_configme[depends] += "kern-tools-native:do_populate_sysroot"
 do_kernel_configme[dirs] += "${S} ${B}"
 do_kernel_configme() {
+	if ${@bb.utils.contains('DISTRO_FEATURES', 'rust-kernel', 'true', 'false', d)}; then
+		if [ ! -d ${STAGING_LIBDIR_NATIVE}/rustlib/src/rust ]; then
+			mkdir -p ${STAGING_LIBDIR_NATIVE}/rustlib/src/
+			cp -r ${TMPDIR}/work-shared/rust ${STAGING_LIBDIR_NATIVE}/rustlib/src/.
+		fi
+	fi
+
 	do_kernel_metadata config
 
 	# translate the kconfig_mode into something that merge_config.sh