build_emscripten.sh

#!/bin/bash

# This currently only builds the allegro example project.

set -e

if ! command -v emcc &> /dev/null
then
  echo "emcc could not be found. You must install emsdk"
  echo "https://emscripten.org/docs/getting_started/downloads.html"
  exit 1
fi

mkdir -p build_emscripten
cd build_emscripten

USE_FLAGS=(
  -s USE_FREETYPE=1
  -s USE_VORBIS=1
  -s USE_OGG=1
  -s USE_LIBJPEG=1
  -s USE_SDL=2
  -s USE_LIBPNG=1
  -s FULL_ES2=1
  -s ASYNCIFY
  -O3
)

# Wish I knew how to remove this.
SDL2_INCLUDE_DIR=$(dirname $(which emcc))/cache/sysroot/include

emcmake cmake .. \
  -D CMAKE_BUILD_TYPE=Release \
  -D ALLEGRO_SDL=ON \
  -D WANT_ALLOW_SSE=OFF \
  -D WANT_OPENAL=OFF \
  -D WANT_AUDIO=ON \
  -D ALLEGRO_WAIT_EVENT_SLEEP=ON \
  -D SDL2_INCLUDE_DIR="$SDL2_INCLUDE_DIR" \
  -D CMAKE_C_FLAGS="${USE_FLAGS[*]}" \
  -D CMAKE_CXX_FLAGS="${USE_FLAGS[*]}" \
  -D CMAKE_EXE_LINKER_FLAGS="${USE_FLAGS[*]}" \
  -D CMAKE_EXECUTABLE_SUFFIX_CXX=".html"

cmake --build . -t al5_example