rust: Support for rust enable builds

Enabling ppc64le rust build support.

Signed-off-by: Mukesh Kumar Chaurasiya (IBM) <mkchauras@gmail.com>

Author: mkchauras

build/scripts/build.sh

@@ -177,6 +177,10 @@ if [[ "$task" == "kernel" ]]; then
     if [[ -n "$LLVM" ]]; then
         cmd+="-e LLVM=$LLVM "
     fi
+
+    if [[ -n "$RUST" ]]; then
+        cmd+="-e RUST=$RUST "
+    fi
 fi
 
 if [[ "$task" == "ppctests" ]]; then

build/scripts/container-build.sh

@@ -40,6 +40,12 @@ rc=0
 
 if [[ "$1" == "kernel" ]]; then
     cc="${CROSS_COMPILE}gcc"
+
+    # As rust is supported via LLVM
+    if [[ -n "$RUST" ]]; then
+	LLVM=1
+    fi
+
     if [[ -n "$CLANG" || -n "$LLVM" ]]; then
         cc="clang"
     fi
@@ -68,6 +74,11 @@ if [[ "$1" == "kernel" ]]; then
         (set -x; make $verbose $quiet $llvm "$cc" $DEFCONFIG)
     fi
 
+    if [[ -n "$RUST" ]]; then
+        echo "Enabling RUST...!!!"
+        (set -x; make $verbose $quiet $llvm "$cc" rustavailable)
+    fi
+
     if [[ -n "$MERGE_CONFIG" ]]; then
         echo "## MERGE_CONFIG  = $MERGE_CONFIG"
 

build/ubuntu/Dockerfile

@@ -15,13 +15,15 @@ RUN apt-get -q -y update && \
     DEBIAN_FRONTEND=noninteractive \
     apt-get -q -y install --no-install-recommends \
       bc \
+      bindgen \
       bison \
       bsdmainutils \
       bzip2 \
       ca-certificates \
       ccache \
       cpio \
       crossbuild-essential-powerpc \
+      curl \
       gcc-multilib-powerpc-linux-gnu \
       dwarves \
       file \
@@ -37,6 +39,8 @@ RUN apt-get -q -y update && \
       libfuse-dev \
       liblz4-tool \
       libssl-dev \
+      lld \
+      llvm \
       lzop \
       make \
       openssl \
@@ -45,11 +49,23 @@ RUN apt-get -q -y update && \
       u-boot-tools \
       rename \
       rsync \
+      rustc \
+      rustfmt \
+      rust-clippy \
+      rust-src \
       sparse \
       xz-utils \
       $(/tmp/packages.sh) && \
     rm -rf /var/lib/apt/lists/* /tmp/packages.sh /var/cache/* /var/log/dpkg.log
-
+ENV RUSTUP_HOME=/opt/rustup
+ENV CARGO_HOME=/opt/cargo
+ENV PATH="/opt/cargo/bin:${PATH}"
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | \
+    sh -s -- -y --no-modify-path
+RUN rustup toolchain install nightly-2026-01-28 \
+    && rustup default nightly-2026-01-28 \
+    && rustup component add rust-src --toolchain nightly-2026-01-28 \
+    && cargo install --locked bindgen-cli
 COPY ubuntu/make-links.sh /tmp/make-links.sh
 RUN /tmp/make-links.sh ${compiler_version} && rm /tmp/make-links.sh