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88 lines
2.4 KiB
88 lines
2.4 KiB
#!/bin/bash
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set -eu
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script_path=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
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cd "$script_path/.."
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CRATE_NAME="egui_demo_app"
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FEATURES="http,persistence,screen_reader"
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OPEN=false
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FAST=false
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while test $# -gt 0; do
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case "$1" in
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-h|--help)
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echo "build_demo_web.sh [--fast] [--open]"
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echo " --fast: skip optimization step"
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echo " --open: open the result in a browser"
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exit 0
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;;
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--fast)
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shift
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FAST=true
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;;
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--open)
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shift
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OPEN=true
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;;
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*)
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break
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;;
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esac
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done
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# This is required to enable the web_sys clipboard API which egui_web uses
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# https://rustwasm.github.io/wasm-bindgen/api/web_sys/struct.Clipboard.html
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# https://rustwasm.github.io/docs/wasm-bindgen/web-sys/unstable-apis.html
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export RUSTFLAGS=--cfg=web_sys_unstable_apis
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# Clear output from old stuff:
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rm -f docs/${CRATE_NAME}_bg.wasm
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echo "Building rust…"
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BUILD=release
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(cd $CRATE_NAME &&
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cargo build \
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--release \
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--lib \
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--target wasm32-unknown-unknown \
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--no-default-features \
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--features ${FEATURES}
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)
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# Get the output directory (in the workspace it is in another location)
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TARGET=`cargo metadata --format-version=1 | jq --raw-output .target_directory`
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echo "Generating JS bindings for wasm…"
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TARGET_NAME="${CRATE_NAME}.wasm"
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WASM_PATH="${TARGET}/wasm32-unknown-unknown/$BUILD/$TARGET_NAME"
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wasm-bindgen ${WASM_PATH} --out-dir docs --no-modules --no-typescript
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# if this fails with "error: cannot import from modules (`env`) with `--no-modules`", you can use:
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# wasm2wat target/wasm32-unknown-unknown/release/egui_demo_app.wasm | rg env
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# wasm2wat target/wasm32-unknown-unknown/release/egui_demo_app.wasm | rg "call .now\b" -B 20 # What calls `$now` (often a culprit)
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# to get wasm-strip: apt/brew/dnf install wabt
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# wasm-strip docs/${CRATE_NAME}_bg.wasm
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if [ "${FAST}" = false ]; then
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echo "Optimizing wasm…"
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# to get wasm-opt: apt/brew/dnf install binaryen
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wasm-opt docs/${CRATE_NAME}_bg.wasm -O2 --fast-math -o docs/${CRATE_NAME}_bg.wasm # add -g to get debug symbols
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fi
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echo "Finished docs/${CRATE_NAME}_bg.wasm"
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if [ "${OPEN}" = true ]; then
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if [[ "$OSTYPE" == "linux-gnu"* ]]; then
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# Linux, ex: Fedora
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xdg-open http://localhost:8888/index.html
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elif [[ "$OSTYPE" == "msys" ]]; then
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# Windows
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start http://localhost:8888/index.html
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else
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# Darwin/MacOS, or something else
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open http://localhost:8888/index.html
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fi
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fi
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