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46 lines
1.4 KiB
Bash
Executable File
46 lines
1.4 KiB
Bash
Executable File
#!/bin/bash
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# Compile all Rust test binaries during the Docker image build.
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# Each binary has the target system's ELF PT_INTERP (dynamic-linker path)
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# baked in so it can run on the (potentially minimal) final BASE_IMAGE.
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set -eo pipefail
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src_dir="${1:?usage: $0 <src_dir> <dst_dir>}"
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dst_dir="${2:?usage: $0 <src_dir> <dst_dir>}"
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loader="$(/tmp/loader-path.sh)"
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mkdir -p "${dst_dir}"
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function compile() {
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local name="${1}"
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local extra_flags="${2:-}"
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local src="${src_dir}/${name}.rs"
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local binary="${dst_dir}/${name}"
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echo "=== Compiling ${name} with rustc ==="
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# -O optimizes (opt-level 2); Rust statically links its own std, so the
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# only dynamic dependency left is the system glibc (+ libgcc_s), exactly
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# like the C++ binaries.
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local compile_cmd="rustc --edition 2021 -O -g ${extra_flags} \
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${src} -o ${binary}"
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echo "Compile cmd: ${compile_cmd}"
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eval "${compile_cmd}"
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echo "=== Patching ${binary} to use ${loader} as PT_INTERP ==="
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local patch_cmd="patchelf --set-interpreter ${loader} --remove-rpath ${binary}"
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echo "Patch cmd: ${patch_cmd}"
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eval "${patch_cmd}"
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}
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# `-O` disables overflow checks by default, so `overflow` re-enables them
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# explicitly to exercise the runtime overflow check.
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compile hello
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compile panic
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compile overflow "-C overflow-checks=on"
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echo "=== All binaries compiled ==="
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ls -la "${dst_dir}"
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