ffaadd258b
The wxWidgets autoconf build inside Docker failed with `emmake: command not
found` on a clean build, while the KiCad CMake build survived (CMake caches the
absolute compiler path). Two compounding causes:
1. `docker compose exec` bypasses the ENTRYPOINT, so it never sourced
emsdk_env.sh and EMSDK was unset. env.sh then fell back to the local
tools/emsdk.
2. The entrypoint's rsync from the host bind mount excluded only build-wasm and
output, so the host's macOS-arm64 tools/emsdk got copied over the container's
Linux emsdk. The macOS Mach-O python can't exec on Linux, so
`emsdk construct_env` failed ("Exec format error") and emcc/emmake never
landed on PATH.
Fixes:
- Set `ENV EMSDK=/emsdk` in the image so every process (including
`docker compose exec`) resolves env.sh's EMSDK branch to the container's own
emsdk and never falls back to tools/emsdk.
- Exclude `tools/emsdk` from the entrypoint rsync so the host emsdk can no
longer leak into the container.
Validated with a clean wxWidgets build (`build-wxuniversal-wasm.sh --clean`):
reconfigures and compiles all 42 wx libs against /emsdk with no missing-tool
errors.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
57 lines
1.7 KiB
Docker
57 lines
1.7 KiB
Docker
# Plain Ubuntu base — multi-arch (ARM64/x86_64 auto-detected)
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FROM ubuntu:22.04
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ENV DEBIAN_FRONTEND=noninteractive
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# Install build tools required for KiCad WASM build
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RUN apt-get update && apt-get install -y \
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cmake \
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autoconf \
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automake \
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libtool \
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meson \
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ninja-build \
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pkg-config \
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curl \
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git \
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python3 \
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python3-dev \
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protobuf-compiler \
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swig \
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unixodbc-dev \
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ccache \
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rsync \
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xz-utils \
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&& rm -rf /var/lib/apt/lists/*
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# Install emsdk from source (same approach as scripts/setup-emsdk.sh)
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# EMSCRIPTEN_VERSION must match scripts/common/versions.sh
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ARG EMSCRIPTEN_VERSION=4.0.2
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RUN git clone https://github.com/emscripten-core/emsdk.git /emsdk \
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&& cd /emsdk \
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&& ./emsdk install ${EMSCRIPTEN_VERSION} \
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&& ./emsdk activate ${EMSCRIPTEN_VERSION}
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# Make Docker's own emsdk authoritative for EVERY process in the container, including
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# `docker compose exec` (which bypasses the ENTRYPOINT). env.sh keys off $EMSDK: with it
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# set, env.sh sources /emsdk/emsdk_env.sh and never falls back to the local tools/emsdk
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# (which, inside this Linux container, can be a host macOS emsdk rsync'd in by mistake and
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# thus unrunnable). This is what lets the wxWidgets autoconf build find emmake on PATH.
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ENV EMSDK=/emsdk
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# Configure ccache for Emscripten
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# CCACHE_DIR in named volume persists across containers
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ENV CCACHE_DIR=/workspace/build-wasm/.ccache
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ENV CCACHE_MAXSIZE=10G
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ENV CCACHE_COMPILERCHECK=content
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ENV CCACHE_SLOPPINESS=include_file_mtime,time_macros,pch_defines
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ENV CCACHE_BASEDIR=/workspace
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WORKDIR /workspace
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# Entry point that sources Emscripten environment
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COPY docker/entrypoint.sh /entrypoint.sh
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RUN chmod +x /entrypoint.sh
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ENTRYPOINT ["/entrypoint.sh"]
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CMD ["bash"]
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