add support for cross-compiling for RVA23

.github/workflows/build_riscv_rva23.yml

@@ -0,0 +1,36 @@
+name: Build RISC V RVA23 via x86 cross-compile
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/cache@v5
+      with:
+        path: |
+          ~/.cargo/bin/
+          ~/.cargo/registry/index/
+          ~/.cargo/registry/cache/
+          ~/.cargo/git/db/
+          target/
+        key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+    - name: Build image
+      run: podman build -t odorobo-builder:rva23 .
+    - name: Build binaries
+      run: podman run --rm -v ${{ github.workspace }}:/code -w /code odorobo-builder:rva23 cargo build --release --verbose
+    - name: Upload artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: odorobo_riscv_rva23
+        path: |
+          target/riscv64a23-unknown-linux-gnu/release/odorobo-agent
+          target/riscv64a23-unknown-linux-gnu/release/odoroboctl

.github/workflows/rust.yml → .github/workflows/build_x86.yml

@@ -1,4 +1,4 @@
-name: Rust
+name: Build x86
 
 on:
   push:
@@ -17,6 +17,13 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Build
-      run: cargo build --verbose
+      run: cargo build --verbose --release
+    - name: Upload artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: odorobo_x86
+        path: |
+          target/release/odorobo-agent
+          target/release/odoroboctl
     - name: Run tests
       run: cargo test --verbose

.gitignore

@@ -20,7 +20,7 @@ dev
 #  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
-#.idea/
+.idea/
 
 # AI Slop
 # Anyone who uses LLMs for slop gets to keep their own slop context.

Containerfile

@@ -0,0 +1,15 @@
+FROM alpine:3.23.3
+RUN apk add \
+	bash \
+	gcc \
+	musl-dev \
+	rustup \
+	zig
+RUN rustup-init \
+	--profile minimal \
+	--target riscv64a23-unknown-linux-gnu \
+	-y
+ENV CARGO_BUILD_TARGET="riscv64a23-unknown-linux-gnu"
+ENV PATH="/root/.cargo/bin:$PATH"
+ENV CC_riscv64a23_unknown_linux_gnu="/code/scripts/zig-cc-rva23.sh"
+ENV CARGO_TARGET_RISCV64A23_UNKNOWN_LINUX_GNU_RUSTFLAGS="-C linker=scripts/zig-cc-rva23.sh"

scripts/zig-cc-rva23.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# A script for cargo to use as the C compiler and linker when building RVA23
+# binaries. This links them using zig cc.
+
+args=()
+for arg in "$@"; do
+	case "$arg" in
+	--target=riscv64-unknown-linux-gnu)
+		;;
+	*)
+		args+=("$arg")
+		;;
+	esac
+done
+exec zig cc -target riscv64-linux-gnu "${args[@]}"