helloworld: Add zig version, tests, and CI

.github/workflows/main.yml

@@ -7,6 +7,38 @@ env:
   SOLANA_ZIG_DIR: solana-zig
 
 jobs:
+  zig-test:
+    name: Run tests against Zig implementations
+    strategy:
+      matrix:
+        program: [helloworld]
+      fail-fast: false
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+          $SOLANA_ZIG_DIR
+        key: zig-${{ hashFiles('./Cargo.lock') }}-$SOLANA_ZIG_VERSION
+
+    - name: Download solana-zig compiler
+      shell: bash
+      run: SOLANA_ZIG_VERSION=$SOLANA_ZIG_VERSION ./install-solana-zig.sh $SOLANA_ZIG_DIR
+
+    - name: Install Rust
+      uses: dtolnay/rust-toolchain@master
+      with:
+        toolchain: 1.78.0
+
+    - name: Install build deps
+      run: ./install-rust-build-deps.sh
+
+    - name: Build and test program
+      run: ./test-zig.sh ${{ matrix.program }}
+
   rust-test:
     name: Run tests against Rust implementations
     strategy:

.gitignore

@@ -1,3 +1,4 @@
 target/
 .zig-cache/
 zig-out/
+solana-zig/

helloworld/zig/build.zig

@@ -0,0 +1,16 @@
+const std = @import("std");
+const solana = @import("solana-program-sdk");
+const base58 = @import("base58");
+
+pub fn build(b: *std.Build) !void {
+    const target = b.resolveTargetQuery(solana.sbf_target);
+    const optimize = .ReleaseSmall;
+    const program = b.addSharedLibrary(.{
+        .name = "solana_program_rosetta_helloworld",
+        .root_source_file = b.path("main.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+    _ = solana.buildProgram(b, program, target, optimize);
+    b.installArtifact(program);
+}

helloworld/zig/build.zig.zon

@@ -0,0 +1,46 @@
+.{
+    .name = "solana-program-rosetta-helloworld-zig",
+    // This is a [Semantic Version](https://semver.org/).
+    // In a future version of Zig it will be used for package deduplication.
+    .version = "0.13.0",
+
+    // This field is optional.
+    // This is currently advisory only; Zig does not yet do anything
+    // with this value.
+    .minimum_zig_version = "0.13.0",
+
+    // This field is optional.
+    // Each dependency must either provide a `url` and `hash`, or a `path`.
+    // `zig build --fetch` can be used to fetch all dependencies of a package, recursively.
+    // Once all dependencies are fetched, `zig build` no longer requires
+    // internet connectivity.
+    .dependencies = .{
+        .base58 = .{
+            .url = "https://github.com/joncinque/base58-zig/archive/refs/tags/v0.13.3.tar.gz",
+            .hash = "1220fd067bf167b9062cc29ccf715ff97643c2d3f8958beea863b6036876bb71bcb8",
+        },
+        .clap = .{
+            .url = "https://github.com/Hejsil/zig-clap/archive/refs/tags/0.9.1.tar.gz",
+            .hash = "122062d301a203d003547b414237229b09a7980095061697349f8bef41be9c30266b",
+        },
+        .@"solana-program-sdk" = .{
+            .url = "https://github.com/joncinque/solana-program-sdk-zig/archive/refs/tags/v0.13.1.tar.gz",
+            .hash = "122030336f1257e3c0aa64243f5243f554b903c6b9ef3a91d48bfbe896c0c7d9b13b",
+        },
+    },
+
+    // Specifies the set of files and directories that are included in this package.
+    // Only files and directories listed here are included in the `hash` that
+    // is computed for this package.
+    // Paths are relative to the build root. Use the empty string (`""`) to refer to
+    // the build root itself.
+    // A directory listed here means that all files within, recursively, are included.
+    .paths = .{
+        // For example...
+        "build.zig",
+        "build.zig.zon",
+        "src",
+        "../../LICENSE",
+        "../../README.md",
+    },
+}

helloworld/zig/main.zig

@@ -0,0 +1,6 @@
+const sol = @import("solana-program-sdk");
+
+export fn entrypoint(_: [*]u8) u64 {
+    sol.log("Hello world!");
+    return 0;
+}

install-solana-zig.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+
+if [[ -n $SOLANA_ZIG_VERSION ]]; then
+  solana_zig_version="$SOLANA_ZIG_VERSION"
+else
+  solana_zig_version="v1.43.0"
+fi
+solana_zig_release_url="https://github.com/joncinque/solana-zig-bootstrap/releases/download/solana-$solana_zig_version"
+
+output_dir="$1"
+if [[ -z $output_dir ]]; then
+  output_dir="solana-zig"
+fi
+output_dir="$(mkdir -p "$output_dir"; cd "$output_dir"; pwd)"
+cd $output_dir
+
+arch=$(uname -m)
+if [[ "$arch" == "arm64" ]]; then
+  arch="aarch64"
+fi
+case $(uname -s | cut -c1-7) in
+"Linux")
+  os="linux"
+  abi="musl"
+  ;;
+"Darwin")
+  os="macos"
+  abi="none"
+  ;;
+"Windows" | "MINGW64")
+  os="windows"
+  abi="gnu"
+  ;;
+*)
+  echo "install-solana-zig.sh: Unknown OS $(uname -s)" >&2
+  exit 1
+  ;;
+esac
+
+solana_zig_tar=zig-$arch-$os-$abi.tar.bz2
+url="$solana_zig_release_url/$solana_zig_tar"
+echo "Downloading $url"
+curl --proto '=https' --tlsv1.2 -SfOL "$url"
+echo "Unpacking $solana_zig_tar"
+tar -xjf $solana_zig_tar
+rm $solana_zig_tar
+
+solana_zig_dir="zig-$arch-$os-$abi-baseline"
+mv "$solana_zig_dir"/* .
+rmdir $solana_zig_dir
+echo "solana-zig compiler available at $output_dir"

test-zig.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+PROGRAM_NAME="$1"
+ZIG="$2"
+ROOT_DIR="$(cd "$(dirname "$0")"; pwd)"
+if [[ -z "$ZIG" ]]; then
+  ZIG="$ROOT_DIR/solana-zig/zig"
+fi
+
+set -e
+PROGRAM_DIR=$ROOT_DIR/$PROGRAM_NAME
+cd $PROGRAM_DIR/zig
+$ZIG build --summary all -freference-trace --verbose
+SBF_OUT_DIR="$PROGRAM_DIR/zig/zig-out/lib" cargo test --manifest-path "$PROGRAM_DIR/Cargo.toml"