build-emscripten-sdl2

#!/usr/bin/env bash

# make sure you use ". ./emsdk_env.sh"

# I'm sick and tired of all the churn the three versions of autoconf
# are causing in this repo. Stop committing the configure scripts
# and just autoregen.
./autogen.sh || exit 1

# for sdl2-config and sdl-config
export PATH=${EMSDK}/upstream/emscripten/system/bin:${PATH}

CC="emcc"
CXX="em++"
LD="emcc"
LD_CXX="em++"
AR="emar"
RANLIB="emranlib"
CFLAGS="-DEMTERPRETER_SYNC"
CXXFLAGS="-DEMSCRIPTEN=1 -DEMTERPRETER_SYNC -s USE_ZLIB=1 -s USE_SDL=2"
LDFLAGS="-DEMSCRIPTEN=1 -DEMTERPRETER_SYNC -s USE_ZLIB=1 -s USE_SDL=2 -s FORCE_FILESYSTEM=1 -s ALLOW_MEMORY_GROWTH=1 -s TOTAL_MEMORY=100663296 -s ASYNCIFY -s ERROR_ON_UNDEFINED_SYMBOLS=0"
export CC CXX LD LD_CXX AR RANLIB CFLAGS CXXFLAGS LDFLAGS

# where are we?
top=$(pwd)
if test -z "${top}" ; then exit 1; fi

# fix
chmod +x vs/sdl/build-scripts/strip_fPIC.sh

echo "Compiling DOSBox-X"
chmod +x configure

# build command borrowed from Yksoft1 vanilla DOSBox-X port with modifications
./configure \
    --host=x86_64-linux --disable-dynrec --disable-dynamic-x86 --disable-fpu-x86 --disable-dynamic-core \
    --enable-sdl2 --with-sdl-prefix="${EMSDK}/upstream/emscripten/system" --disable-screenshots \
    --disable-opengl --disable-mt32 --enable-emscripten --enable-force-menu-sdldraw --disable-x11 \
    --disable-avcodec --disable-libslirp --disable-libfluidsynth --disable-freetype "${@}"

make -j6 || exit 1

# the resulting files are src/dosbox-x (JS) and src/dosbox-x.wasm