diff mbox series

[RFC,5/7] kernel-yocto: add rust support via make rustavailable in do_kernel_configme

Message ID 20251023112547.4044904-6-Harish.Sadineni@windriver.com
State New
Headers show
Series Enable rust support for linux kernel | expand

Commit Message

Harish Sadineni Oct. 23, 2025, 11:25 a.m. UTC 
From: Harish Sadineni <Harish.Sadineni@windriver.com>

To enable Rust integration in the Linux kernel build, this patch:

- Adds `rust-native` and `bindgen-cli-native` to `do_kernel_configme[depends]`
  to ensure required tools are available for Rust support.
- Invokes `make rustavailable` inside `do_kernel_configme()` to prepare
  the kernel for building Rust-based modules or core components.

The `make rustavailable` target requires the Rust standard library sources to be
present under `${STAGING_DIR_NATIVE}/usr/lib/rustlib/src/rust`, which is handled
in the `rust` recipe via shared staging.

Signed-off-by: Harish Sadineni <Harish.Sadineni@windriver.com>
---
 meta/classes-recipe/kernel-yocto.bbclass | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/meta/classes-recipe/kernel-yocto.bbclass b/meta/classes-recipe/kernel-yocto.bbclass
index e53bf15194..1a212b9be9 100644
--- a/meta/classes-recipe/kernel-yocto.bbclass
+++ b/meta/classes-recipe/kernel-yocto.bbclass
@@ -463,6 +463,8 @@  do_kernel_configme[depends] += "virtual/cross-binutils:do_populate_sysroot"
 do_kernel_configme[depends] += "virtual/cross-cc:do_populate_sysroot"
 do_kernel_configme[depends] += "bc-native:do_populate_sysroot bison-native:do_populate_sysroot"
 do_kernel_configme[depends] += "kern-tools-native:do_populate_sysroot"
+do_kernel_configme[depends] += "rust-native:do_populate_sysroot"
+do_kernel_configme[depends] += "bindgen-cli-native:do_populate_sysroot"
 do_kernel_configme[dirs] += "${S} ${B}"
 do_kernel_configme() {
 	do_kernel_metadata config
@@ -492,6 +494,8 @@  do_kernel_configme() {
 		bbfatal_log "Could not find configuration queue (${meta_dir}/config.queue)"
 	fi
 
+	oe_runmake -C ${S} O=${B} rustavailable
+
 	CFLAGS="${CFLAGS} ${TOOLCHAIN_OPTIONS}" HOSTCC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}" HOSTCPP="${BUILD_CPP}" CC="${KERNEL_CC}" LD="${KERNEL_LD}" OBJCOPY="${KERNEL_OBJCOPY}" STRIP="${KERNEL_STRIP}" ARCH=${ARCH} merge_config.sh -O ${B} ${config_flags} ${configs} > ${meta_dir}/cfg/merge_config_build.log 2>&1
 	if [ $? -ne 0 -o ! -f ${B}/.config ]; then
 		bberror "Could not generate a .config for ${KMACHINE}-${LINUX_KERNEL_TYPE}"