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[RFC,v4,06/11] kernel-yocto: add rust support via "make rustavailable" in do_kernel_configme

Message ID 20251120152649.1128685-7-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>

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

- Adds `rust-native`, `clang-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.

Signed-off-by: Harish Sadineni <Harish.Sadineni@windriver.com>
---
 meta/classes-recipe/kernel-yocto.bbclass | 9 +++++++++
 1 file changed, 9 insertions(+)
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Patch

diff --git a/meta/classes-recipe/kernel-yocto.bbclass b/meta/classes-recipe/kernel-yocto.bbclass
index 2584cadf0d..dda235d4d0 100644
--- a/meta/classes-recipe/kernel-yocto.bbclass
+++ b/meta/classes-recipe/kernel-yocto.bbclass
@@ -463,6 +463,11 @@  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"
+RUST_KERNEL_TASK_DEPENDS ?=  "${@bb.utils.contains('DISTRO_FEATURES', 'rust-kernel', ' \
+                                  rust-native:do_populate_sysroot \
+                                  clang-native:do_populate_sysroot \
+                                  bindgen-cli-native:do_populate_sysroot', '', d)}"
+do_kernel_configme[depends] += "${RUST_KERNEL_TASK_DEPENDS}"
 do_kernel_configme[dirs] += "${S} ${B}"
 do_kernel_configme() {
 	if ${@bb.utils.contains('DISTRO_FEATURES', 'rust-kernel', 'true', 'false', d)}; then
@@ -513,6 +518,10 @@  do_kernel_configme() {
 		echo "# Global settings from linux recipe" >> ${B}/.config
 		echo "CONFIG_LOCALVERSION="\"${LINUX_VERSION_EXTENSION}\" >> ${B}/.config
 	fi
+        
+	if ${@bb.utils.contains('DISTRO_FEATURES', 'rust-kernel', 'true', 'false', d)}; then
+		oe_runmake -C ${S} O=${B} rustavailable
+	fi
 }
 
 addtask kernel_configme before do_configure after do_patch