wasm_rules.hancho

emcc = hancho.Config(
    desc="Compile Emscripten'd {in_src}",
    command="emcc {flags} {joined_includes} -c {in_src} -o {out_obj}",
    flags=[
        "-std=c++20",
        "-O0",
        "-g3",
        "-gsource-map",
        "-MMD",
        "-sNO_DISABLE_EXCEPTION_CATCHING",
        "-Wno-deprecated-declarations",
    ],
    includes=None,
    out_obj="{swap_ext(in_src, '.o')}",
    joined_includes="{join_prefix('-I', includes)}",
)

emld = hancho.Config(
    desc="Link Emscripten'd {rel(out_js)}",
    command="emcc {flags} {in_objs} -o {out_js}",
    flags=[
        "-sEXPORT_ES6",
        "-sEXPORTED_RUNTIME_METHODS=['FS','callMain']",
        "-sNO_DISABLE_EXCEPTION_CATCHING",
        "-sTOTAL_STACK=32MB",
        "-sINITIAL_MEMORY=256MB",
        "-sALLOW_MEMORY_GROWTH",
        "-sFORCE_FILESYSTEM",
    ],
)

ems_package = hancho.Config(
    desc="Package {rel(out_data)}",
    command=[
        "rm -f {out_data}",
        "rm -f {out_js}",
        "python3 $EMSDK/upstream/emscripten/tools/file_packager.py {out_data} {flags} --js-output={out_js} --preload {preloads} --exclude {excludes} 2> /dev/null",
    ],
    flags="--no-node",
    excludes="*.cpp *.sv *.MD *.hex *.pcf *.v *.txt *.hancho",
)