On Fri, 2026-08-07 at 02:31 -0700, Sadineni, Harish via lists.openembedded.org
wrote:
> From: Harish Sadineni <[email protected]>
>
> YOCTO [#15061]
>
> Fixes 32-bit Cargo build failures when using multilib-enabled SDKs.
>
> Store the generated environment setup script in a target-specific
> subdirectory so that sourcing the SDK environment always loads the
> matching script for the selected target, avoiding accidental reuse of
> the 64-bit configuration when building for a 32-bit target.
>
> Also update `CARGO_TARGET_<TRIPLE>_RUSTFLAGS` to add an explicit
> `-L` search path to the target `rustlib` directory inside the sysroot.
> This ensures Cargo can locate the correct target-specific Rust libraries
> during cross-compilation with the cross-canadian toolchain.
>
> Signed-off-by: Harish Sadineni <[email protected]>
> ---
> meta/recipes-devtools/rust/rust-cross-canadian.inc | 10 ++++++----
> 1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/meta/recipes-devtools/rust/rust-cross-canadian.inc
> b/meta/recipes-devtools/rust/rust-cross-canadian.inc
> index f083bcda82..bdc63e221f 100644
> --- a/meta/recipes-devtools/rust/rust-cross-canadian.inc
> +++ b/meta/recipes-devtools/rust/rust-cross-canadian.inc
> @@ -51,15 +51,17 @@ do_install () {
> chmod +x "$outfile"
> create_sdk_wrapper "${SYS_BINDIR}/target-rust-ccld-wrapper" "CC"
>
> - ENV_SETUP_DIR=${D}${base_prefix}/environment-setup.d
> - mkdir "${ENV_SETUP_DIR}"
> + ENV_SETUP_DIR=${D}${base_prefix}/environment-setup.d/${TARGET_SYS}
> + mkdir -p "${ENV_SETUP_DIR}"
> RUST_ENV_SETUP_SH="${ENV_SETUP_DIR}/${RUST_TARGET_SYS}_rust.sh"
>
> RUST_TARGET_TRIPLE=`echo ${RUST_TARGET_SYS} | tr '[:lower:]' '[:upper:]'
> | sed 's/-/_/g'`
>
> cat <<- EOF > "${RUST_ENV_SETUP_SH}"
> - export
> CARGO_TARGET_${RUST_TARGET_TRIPLE}_RUSTFLAGS="--sysroot=\$OECORE_TARGET_SYSROOT/usr
> -C link-arg=--sysroot=\$OECORE_TARGET_SYSROOT"
> - export CARGO_BUILD_TARGET="${RUST_TARGET_SYS}"
> + export RUST_TARGET_SYS_VALUE="${RUST_TARGET_SYS}"
> +
> LIB_PATH="\$OECORE_TARGET_SYSROOT/usr/${baselib}/rustlib/${RUST_TARGET_SYS}/lib"
> + export
> CARGO_TARGET_${RUST_TARGET_TRIPLE}_RUSTFLAGS="--sysroot=\$OECORE_TARGET_SYSROOT/usr
> -C link-arg=--sysroot=\$OECORE_TARGET_SYSROOT -L \$LIB_PATH"
> + export CARGO_BUILD_TARGET="${RUST_TARGET_SYS}"
> export
> RUST_TARGET_PATH="\$OECORE_NATIVE_SYSROOT/usr/lib/${TARGET_SYS}/rustlib"
> EOF
I'm a bit confused here. The script in question already has
${RUST_TARGET_SYS} in its name, so it is already target specific. Why
do we need to move it to a target specific directory?
Cheers,
Richard
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