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rippled/nix/docker/test_files/rust/compile-sources.sh
2026-07-22 14:00:17 +00:00

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#!/bin/bash
# Compile all Rust test binaries during the Docker image build.
# Each binary has the target system's ELF PT_INTERP (dynamic-linker path)
# baked in so it can run on the (potentially minimal) final BASE_IMAGE.
set -eo pipefail
src_dir="${1:?usage: $0 <src_dir> <dst_dir>}"
dst_dir="${2:?usage: $0 <src_dir> <dst_dir>}"
loader="$(/tmp/loader-path.sh)"
mkdir -p "${dst_dir}"
function compile() {
local name="${1}"
local extra_flags="${2:-}"
local src="${src_dir}/${name}.rs"
local binary="${dst_dir}/${name}"
echo "=== Compiling ${name} with rustc ==="
# -O optimizes (opt-level 2); Rust statically links its own std, so the
# only dynamic dependency left is the system glibc (+ libgcc_s), exactly
# like the C++ binaries.
local compile_cmd="rustc --edition 2021 -O -g ${extra_flags} \
${src} -o ${binary}"
echo "Compile cmd: ${compile_cmd}"
eval "${compile_cmd}"
echo "=== Patching ${binary} to use ${loader} as PT_INTERP ==="
local patch_cmd="patchelf --set-interpreter ${loader} --remove-rpath ${binary}"
echo "Patch cmd: ${patch_cmd}"
eval "${patch_cmd}"
}
# `-O` disables overflow checks by default, so `overflow` re-enables them
# explicitly to exercise the runtime overflow check.
compile hello
compile panic
compile overflow "-C overflow-checks=on"
function compile_proc_macro() {
local proj="${src_dir}/../proc_macro"
echo "=== Building proc-macro workspace (cargo) ==="
cargo build --manifest-path "${proj}/Cargo.toml" --offline
local built="${proj}/target/debug/test_macro"
if [ ! -f "${built}" ]; then
echo "ERROR: built test_macro binary not found at ${built}" >&2
exit 1
fi
local binary="${dst_dir}/proc_macro"
cp "${built}" "${binary}"
echo "=== Patching ${binary} to use ${loader} as PT_INTERP ==="
patchelf --set-interpreter "${loader}" --remove-rpath "${binary}"
rm -rf "${proj}/target"
}
compile_proc_macro
echo "=== All binaries compiled ==="
ls -la "${dst_dir}"