FROM emscripten/emsdk:latest

RUN apt update
RUN apt install -y autoconf automake libtool make

WORKDIR /tmp/c
COPY gu/*.c gu/*.h /tmp/c/gu/
COPY pgf/*.c pgf/*.h /tmp/c/pgf/
COPY pgf/lightning/i386/*.h /tmp/c/pgf/lightning/i386/
COPY pgf/lightning/*.h /tmp/c/pgf/lightning/
COPY \
    Makefile.am \
    configure.ac \
    lib*.pc.in \
    /tmp/c/
RUN autoreconf -i
RUN emconfigure ./configure
RUN emmake make
RUN emcc .libs/libgu.a .libs/libpgf.a -o pgf.js \
    -sALLOW_MEMORY_GROWTH \
    -sEXPORTED_FUNCTIONS="\
        _pgf_read,\
        _pgf_abstract_name,\
        _pgf_read_expr,\
        _pgf_print_expr,\
        _pgf_expr_arity,\
        _gu_new_pool,\
        _gu_new_exn,\
        _gu_data_in,\
        _gu_exn_is_raised,\
        _gu_exn_caught_,\
        _gu_exn_caught_data,\
        _gu_exn_clear,\
        _gu_new_string_buf,\
        _gu_string_buf_out,\
        _gu_string_buf_data,\
        _malloc,\
        _free\
        "\
    -sEXPORTED_RUNTIME_METHODS="\
        ccall,\
        FS,\
        getValue,\
        AsciiToString,\
        stringToUTF8,\
        UTF8ToString,\
        allocateUTF8\
        "