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The process of converting thelibwebp project from C/C++ to WASM is achieved using theEmscripten compiler. The general workflow is as follows:

This includes installingemsdk,cmake, andpnpm. For specific installation methods, refer to theEmscripten official documentation,pnpm official documentation, andinstalling cmake.

git submodule update --init --recursive --remote --rebase

If you are using zsh, it is recommended to installthe dotenv plugin to enable features like setting environment variables if a .env file is present in the current directory.

pnpm build:mac

docker build -f ./docker/Dockerfile -t libwebp-wasm/img2webp:latest.

docker run --rm  -v$(pwd)/dist:/img2webp/dist -v$(pwd)/es:/img2webp/es -v$(pwd)/lib:/img2webp/lib libwebp-wasm/img2webp:latest

Note: The modification of upstream submodule project code is currently done by running the git apply command. Sometimes you need to commit your own changes in the submodule directory and manually generate the patch.

pnpm build:patch

• Img to Webp

MIT