thorvg/wasm_build.sh
Jinny You bb2cefe9bc wasm: optimize binary size
- Changed optimization flags to -Oz, reducing the binary size by 120KB.
- Applied wasm-opt convergence as a post-process to ensure the minimum possible size with the given optimization flag.
2025-02-17 15:05:10 +09:00

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#!/bin/bash
#https://github.com/thorvg/thorvg/wiki/ThorVG-Viewer-Development-Guide
BACKEND="$1"
EMSDK="$2"
if [ -z "$2" ]; then
BACKEND="all"
EMSDK="$1"
fi
if [ ! -d "./build_wasm" ]; then
if [[ "$BACKEND" == "wg" ]]; then
sed "s|EMSDK:|$EMSDK|g" ./cross/wasm32_wg.txt > /tmp/.wasm_cross.txt
meson setup -Db_lto=true -Ddefault_library=static -Dstatic=true -Dloaders="all" -Dsavers="all" -Dthreads=false -Dbindings="wasm_beta" -Dengines="wg" --cross-file /tmp/.wasm_cross.txt build_wasm
elif [[ "$BACKEND" == "sw" ]]; then
sed "s|EMSDK:|$EMSDK|g" ./cross/wasm32_sw.txt > /tmp/.wasm_cross.txt
meson setup -Db_lto=true -Ddefault_library=static -Dstatic=true -Dloaders="all" -Dsavers="all" -Dthreads=false -Dbindings="wasm_beta" --cross-file /tmp/.wasm_cross.txt build_wasm
elif [[ "$BACKEND" == "gl" ]]; then
sed "s|EMSDK:|$EMSDK|g" ./cross/wasm32_gl.txt > /tmp/.wasm_cross.txt
meson setup -Db_lto=true -Ddefault_library=static -Dstatic=true -Dloaders="all" -Dsavers="all" -Dthreads=false -Dbindings="wasm_beta" -Dengines="gl" --cross-file /tmp/.wasm_cross.txt build_wasm
else
sed "s|EMSDK:|$EMSDK|g" ./cross/wasm32.txt > /tmp/.wasm_cross.txt
meson setup -Db_lto=true -Ddefault_library=static -Dstatic=true -Dloaders="all" -Dsavers="all" -Dthreads=false -Dbindings="wasm_beta" -Dengines="wg, gl, sw" --cross-file /tmp/.wasm_cross.txt build_wasm
fi
fi
ninja -C build_wasm/
wasm-opt build_wasm/src/bindings/wasm/thorvg-wasm.wasm -Oz --converge -all -o build_wasm/src/bindings/wasm/thorvg-wasm.wasm
ls -lrt build_wasm/src/bindings/wasm/*.{js,wasm}