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[ThirdParty] Added emsdk bazel rules that can be supported by bazel 9.0.0
author MrJuneJune <me@mrjunejune.com>
date Thu, 22 Jan 2026 21:23:17 -0800
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178:94705b5986b3 179:8d17f6e6e290
1 FROM ubuntu:jammy AS stage_build
2
3 ARG EMSCRIPTEN_VERSION=tot
4 ENV EMSDK /emsdk
5
6 # ------------------------------------------------------------------------------
7
8 RUN echo "## Start building" \
9 && echo "## Update and install packages" \
10 && apt-get -qq -y update \
11 && apt-get -qq install -y --no-install-recommends \
12 binutils \
13 build-essential \
14 ca-certificates \
15 file \
16 git \
17 python3 \
18 python3-pip \
19 && echo "## Done"
20
21 # Copy the contents of this repository to the container
22 COPY . ${EMSDK}
23
24 RUN echo "## Install Emscripten" \
25 && cd ${EMSDK} \
26 && ./emsdk install ${EMSCRIPTEN_VERSION} \
27 && echo "## Done"
28
29 # This generates configuration that contains all valid paths according to installed SDK
30 # TODO(sbc): We should be able to use just emcc -v here but it doesn't
31 # currently create the sanity file.
32 RUN cd ${EMSDK} \
33 && echo "## Generate standard configuration" \
34 && ./emsdk activate ${EMSCRIPTEN_VERSION} \
35 && chmod 777 ${EMSDK}/upstream/emscripten \
36 && chmod -R 777 ${EMSDK}/upstream/emscripten/cache \
37 && echo "int main() { return 0; }" > hello.c \
38 && ${EMSDK}/upstream/emscripten/emcc -c hello.c \
39 && cat ${EMSDK}/upstream/emscripten/cache/sanity.txt \
40 && echo "## Done"
41
42 # Cleanup Emscripten installation and strip some symbols
43 RUN echo "## Aggressive optimization: Remove debug symbols" \
44 && cd ${EMSDK} && . ./emsdk_env.sh \
45 # Remove debugging symbols from embedded node (extra 7MB)
46 && strip -s `which node` \
47 # Tests consume ~80MB disc space
48 && rm -fr ${EMSDK}/upstream/emscripten/tests \
49 # strip out symbols from clang (~extra 50MB disc space)
50 && find ${EMSDK}/upstream/bin -type f -exec strip -s {} + || true \
51 && echo "## Done"
52
53 # ------------------------------------------------------------------------------
54 # -------------------------------- STAGE DEPLOY --------------------------------
55 # ------------------------------------------------------------------------------
56
57 FROM ubuntu:jammy AS stage_deploy
58
59 COPY --from=stage_build /emsdk /emsdk
60
61 # These fallback environment variables are intended for situations where the
62 # entrypoint is not utilized (as in a derived image) or overridden (e.g. when
63 # using `--entrypoint /bin/bash` in CLI).
64 # This corresponds to the env variables set during: `source ./emsdk_env.sh`
65 ENV EMSDK=/emsdk \
66 PATH="/emsdk:/emsdk/upstream/emscripten:/emsdk/node/22.16.0_64bit/bin:${PATH}"
67
68 # ------------------------------------------------------------------------------
69 # Create a 'standard` 1000:1000 user
70 # Thanks to that this image can be executed as non-root user and created files
71 # will not require root access level on host machine Please note that this
72 # solution even if widely spread (i.e. Node.js uses it) is far from perfect as
73 # user 1000:1000 might not exist on host machine, and in this case running any
74 # docker image will cause other random problems (mostly due `$HOME` pointing to
75 # `/`)
76 RUN echo "## Create emscripten user (1000:1000)" \
77 && groupadd --gid 1000 emscripten \
78 && useradd --uid 1000 --gid emscripten --shell /bin/bash --create-home emscripten \
79 && echo "## Done"
80
81 # ------------------------------------------------------------------------------
82
83 RUN echo "## Update and install packages" \
84 && apt-get -qq -y update \
85 # Somewhere in here apt sets up tzdata which asks for your time zone and blocks
86 # waiting for the answer which you can't give as docker build doesn't read from
87 # the terminal. The env vars set here avoid the interactive prompt and set the TZ.
88 && DEBIAN_FRONTEND="noninteractive" TZ="America/San_Francisco" apt-get -qq install -y --no-install-recommends \
89 sudo \
90 libxml2 \
91 ca-certificates \
92 python3 \
93 python3-pip \
94 wget \
95 curl \
96 zip \
97 unzip \
98 git \
99 git-lfs \
100 ssh-client \
101 build-essential \
102 make \
103 ant \
104 libidn12 \
105 cmake \
106 openjdk-11-jre-headless \
107 # Standard Cleanup on Debian images
108 && apt-get -y clean \
109 && apt-get -y autoclean \
110 && apt-get -y autoremove \
111 && rm -rf /var/lib/apt/lists/* \
112 && rm -rf /var/cache/debconf/*-old \
113 && rm -rf /usr/share/doc/* \
114 && rm -rf /usr/share/man/?? \
115 && rm -rf /usr/share/man/??_* \
116 && echo "## Done"
117
118 # ------------------------------------------------------------------------------
119 # Use commonly used /src as working directory
120 WORKDIR /src
121
122 ENTRYPOINT ["/emsdk/docker/entrypoint.sh"]
123
124 LABEL maintainer="[email protected]" \
125 org.label-schema.name="emscripten" \
126 org.label-schema.description="The official container with Emscripten SDK" \
127 org.label-schema.url="https://emscripten.org" \
128 org.label-schema.vcs-url="https://github.com/emscripten-core/emsdk" \
129 org.label-schema.docker.dockerfile="/docker/Dockerfile"
130
131 # ------------------------------------------------------------------------------