virtualx-engine/platform/javascript/SCsub

#!/usr/bin/env python

Import('env')

javascript_files = [
    "os_javascript.cpp",
    "audio_driver_javascript.cpp",
    "javascript_main.cpp",
    "audio_server_javascript.cpp",
    "power_javascript.cpp",
    "javascript_eval.cpp",
]

env_javascript = env.Clone()
if env['target'] == "profile":
    env_javascript.Append(CPPFLAGS=['-DPROFILER_ENABLED'])

javascript_objects = []
for x in javascript_files:
    javascript_objects.append(env_javascript.Object(x))

env.Append(LINKFLAGS=["-s", "EXPORTED_FUNCTIONS=\"['_main','_audio_server_mix_function','_main_after_fs_sync']\""])
env.Append(LINKFLAGS=["--shell-file", '"platform/javascript/godot_shell.html"'])

html_file = env.Program('#bin/godot', javascript_objects, PROGSUFFIX=env["PROGSUFFIX"] + ".html")[0]
Depends(html_file, "godot_shell.html")
basename = "godot" + env["PROGSUFFIX"] # output file name without file extension

# Emscripten hardcodes file names, so replace common base name with
# placeholder while leaving extension; also change `.html.mem` to just `.mem`
fixup_html = env.Substfile(html_file, SUBST_DICT=[(basename, '$$GODOT_BASE'), ('.html.mem', '.mem')], SUBSTFILESUFFIX='.fixup.html')

zip_dir = env.Dir('#bin/.javascript_zip')
zip_files = []
js_file = env.SideEffect(html_file.File(basename+'.js'), html_file)
zip_files.append(env.InstallAs(
    [zip_dir.File('godot.html'), zip_dir.File('godot.js'), zip_dir.File('godotfs.js')],
    [fixup_html, js_file, '#misc/dist/html_fs/godotfs.js']))

if env['wasm'] == 'yes':
    wasm_file = env.SideEffect(html_file.File(basename+'.wasm'), html_file)
    zip_files.append(env.InstallAs(zip_dir.File('godot.wasm'), wasm_file))
else:
    asmjs_files = env.SideEffect([html_file.File(basename+'.asm.js'), html_file.File(basename+'.html.mem')], html_file)
    zip_files.append(env.InstallAs([zip_dir.File('godot.asm.js'), zip_dir.File('godot.mem')], asmjs_files))

Zip('#bin/godot', zip_files, ZIPSUFFIX=env['PROGSUFFIX']+env['ZIPSUFFIX'], ZIPROOT=zip_dir)