#!/bin/bash

set -e

export EM_CACHE="${PWD}/node_modules/.em_cache"
export OPTIMIZE="-Os -flto --llvm-lto 1"
export LDFLAGS="${OPTIMIZE}"
export CFLAGS="${OPTIMIZE}"
export CPPFLAGS="${OPTIMIZE}"
apt-get update
apt-get install -qqy autoconf libtool pkg-config

echo "============================================="
echo "Compiling libwebp"
echo "============================================="
test -n "$SKIP_LIBWEBP" || (
  cd node_modules/libwebp
  autoreconf -iv
  emconfigure ./configure -C \
    --disable-libwebpdemux \
    --disable-wic \
    --disable-gif \
    --disable-tiff \
    --disable-jpeg \
    --disable-png \
    --disable-sdl \
    --disable-gl \
    --disable-threading \
    --disable-neon-rtcd \
    --disable-neon \
    --disable-sse2 \
    --disable-sse4.1
  emmake make -j`nproc`
)
echo "============================================="
echo "Compiling wasm bindings"
echo "============================================="
(
  emcc \
    ${OPTIMIZE} \
    --closure 1 \
    --bind \
    -s ALLOW_MEMORY_GROWTH=1 \
    -s MODULARIZE=1 \
    -s 'EXPORT_NAME="webp_dec"' \
    -I node_modules/libwebp \
    -o dec/webp_dec.js \
    dec/webp_dec.cpp \
    node_modules/libwebp/src/.libs/libwebp.a
)
(
  emcc \
    ${OPTIMIZE} \
    --closure 1 \
    --bind \
    -s ALLOW_MEMORY_GROWTH=1 \
    -s MODULARIZE=1 \
    -s 'EXPORT_NAME="webp_enc"' \
    -I node_modules/libwebp \
    -o enc/webp_enc.js \
    enc/webp_enc.cpp \
    node_modules/libwebp/src/.libs/libwebp.a
)
echo "============================================="
echo "Compiling wasm bindings done"
echo "============================================="

echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
echo "Did you update your docker image?"
echo "Run \`docker pull trzeci/emscripten-upstream\`"
echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"