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#!/usr/bin/env bash
set -ex
EMSDK_VERSION=1.39.20
hide_output() {
set +x
on_err="
echo ERROR: An error was encountered with the build.
cat /tmp/build.log
exit 1
"
trap '$on_err' ERR
bash -c "while true; do sleep 30; echo \$(date) - building ...; done" &
PING_LOOP_PID=$!
"${@}" &> /tmp/build.log
trap - ERR
kill $PING_LOOP_PID
rm -f /tmp/build.log
set -x
}
git clone https://github.com/emscripten-core/emsdk.git /emsdk-portable
cd /emsdk-portable
hide_output ./emsdk install "${EMSDK_VERSION}"
./emsdk activate "${EMSDK_VERSION}"
# Compile and cache libc
# shellcheck disable=SC1091
source ./emsdk_env.sh
echo "main(){}" > a.c
HOME=/emsdk-portable/ emcc a.c
rm -f a.*
# Make emsdk usable by any user
chmod a+rxw -R /emsdk-portable
# node 8 is required to run wasm
# NOTE: Do not forget to sync Node.js version with `emscripten-entry.sh`!
cd /
curl --retry 5 -L https://nodejs.org/dist/v14.17.0/node-v14.17.0-linux-x64.tar.xz | \
tar -xJ
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