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19 lines
989 B
19 lines
989 B
# Metro Hermes Compiler
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This experimental module provides a high-level API to work with the Hermes bytecode compiler (HBC). HBC is integrated as a WASM binary generated by the emscripten toolchain and checked in as part of this package.
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## How to build HBC
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A pre-configured emscripten environment can be used through this [Docker image](https://hub.docker.com/r/trzeci/emscripten/). Docker can be installed via its [desktop app](https://docs.docker.com/docker-for-mac/). Make sure to increase resource limits (16G RAM, as much CPU as possible).
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```
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cd path/to/hermes/checkout
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docker run -i -t --rm -v `pwd`:`pwd` trzeci/emscripten bash
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apt-get update -y && apt-get install -y icu-devtools
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cd path/to/hermes/checkout
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cmake . -DCMAKE_TOOLCHAIN_FILE=/emsdk_portable/emscripten/sdk/cmake/Modules/Platform/Emscripten.cmake -DCMAKE_BUILD_TYPE=Release
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make -j emhermesc
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```
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After the build process finishes the Hermes Bytecode Compiler JavaScript file will be available in the `bin` folder.
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