e616f9feb3
wasm-pack auto-downloads and runs a fixed version of wasm-opt, but wasm-pack itself hasn't been maintained for a while, and so wasm-opt that comes with it is also severely outdated, leading to all sorts of hidden issues (compiler errors, broken atomics code, etc.) as well as missed optimisations. This change disable wasm-opt feature of wasm-pack in all Rust codecs and runs the latest wasm-opt manually instead.
27 lines
1.1 KiB
Docker
27 lines
1.1 KiB
Docker
ARG RUST_IMG=rust:1.47
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FROM emscripten/emsdk:2.0.8 AS wasm-tools
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WORKDIR /opt/wasm-tools
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RUN wget -qO- https://github.com/rustwasm/wasm-pack/releases/download/v0.9.1/wasm-pack-v0.9.1-x86_64-unknown-linux-musl.tar.gz | tar -xzf - --strip 1
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FROM $RUST_IMG AS rust
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ARG RUST_IMG
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RUN rustup target add wasm32-unknown-unknown
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RUN case $RUST_IMG in rustlang/rust@*) rustup component add rust-src; esac
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COPY --from=wasm-tools /emsdk/upstream/bin/wasm-opt /emsdk/upstream/bin/clang /usr/local/bin/
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COPY --from=wasm-tools /emsdk/upstream/lib/ /usr/local/lib/
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COPY --from=wasm-tools /emsdk/upstream/emscripten/system/include/libc/ /wasm32/include/
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COPY --from=wasm-tools /emsdk/upstream/emscripten/system/lib/libc/musl/arch/emscripten/bits/ /wasm32/include/bits/
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COPY --from=wasm-tools /opt/wasm-tools/wasm-pack /usr/local/cargo/bin/
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ENV CPATH="/wasm32/include"
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WORKDIR /src
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CMD ["sh", "-c", "\
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rm -rf pkg && \
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wasm-pack build --target web -- --locked && \
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echo 'Optimising binaries...' && \
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wasm-opt -O --enable-mutable-globals pkg/*.wasm -o pkg/*.wasm && \
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rm pkg/.gitignore && \
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echo Done \
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"]
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