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[v8,05/14] kernel-yocto-rust: Fix for buildpaths errors when rust is enabled for kernel

Message ID 20260309174346.3384212-6-Harish.Sadineni@windriver.com
State Under Review
Headers show
Series Enable rust support for linux kernel | expand

Commit Message

Harish Sadineni March 9, 2026, 5:43 p.m. UTC 
From: Harish Sadineni <Harish.Sadineni@windriver.com>

Fixes for buildpaths errors after enabling rust for linux-kernel

-Introduced KRUSTFLAGS to pass `--remap-path-prefix` to rustc while
 building kernel with rust support.

Co-authored-by: El Mehdi YOUNES <elmehdi.younes@smile.fr>
Signed-off-by: Harish Sadineni <Harish.Sadineni@windriver.com>
---
 meta/classes-recipe/kernel-yocto-rust.bbclass | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/meta/classes-recipe/kernel-yocto-rust.bbclass b/meta/classes-recipe/kernel-yocto-rust.bbclass
index 7acc81764f..fd9ee91c79 100644
--- a/meta/classes-recipe/kernel-yocto-rust.bbclass
+++ b/meta/classes-recipe/kernel-yocto-rust.bbclass
@@ -4,6 +4,12 @@ 
 # SPDX-License-Identifier: MIT
 #
 
+RUST_DEBUG_REMAP = "--remap-path-prefix=${WORKDIR}=${TARGET_DBGSRC_DIR} \
+                    --remap-path-prefix=${TMPDIR}/work-shared=${TARGET_DBGSRC_DIR} \
+"
+KRUSTFLAGS = " ${RUST_DEBUG_REMAP}"
+EXTRA_OEMAKE:append = " KRUSTFLAGS='${KRUSTFLAGS}'"
+
 RUST_KERNEL_TASK_DEPENDS ?=  "rust-native:do_populate_sysroot clang-native:do_populate_sysroot bindgen-cli-native:do_populate_sysroot"
 do_kernel_configme[depends] += "${RUST_KERNEL_TASK_DEPENDS}"