virtualx-engine/platform/javascript/SCsub

#!/usr/bin/env python

Import('env')

javascript_files = [
    "os_javascript.cpp",
    "audio_driver_javascript.cpp",
    "javascript_main.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','_main_after_fs_sync','_send_notification']\""])

# output file name without file extension
basename = "godot" + env["PROGSUFFIX"]
target_dir = env.Dir("#bin")

zip_dir = target_dir.Dir('.javascript_zip')
zip_files = env.InstallAs(zip_dir.File('godot.html'), '#misc/dist/html/default.html')

implicit_targets = []
if env['wasm']:
    wasm = target_dir.File(basename + '.wasm')
    implicit_targets.append(wasm)
    zip_files.append(InstallAs(zip_dir.File('godot.wasm'), wasm))
    prejs = env.File('pre_wasm.js')
else:
    asmjs_files = [target_dir.File(basename + '.asm.js'), target_dir.File(basename + '.js.mem')]
    implicit_targets.extend(asmjs_files)
    zip_files.append(InstallAs([zip_dir.File('godot.asm.js'), zip_dir.File('godot.mem')], asmjs_files))
    prejs = env.File('pre_asmjs.js')

js = env.Program(['#bin/godot'] + implicit_targets, javascript_objects, PROGSUFFIX=env['PROGSUFFIX'] + '.js')[0];
zip_files.append(InstallAs(zip_dir.File('godot.js'), js))

postjs = env.File('engine.js')
env.Depends(js, [prejs, postjs])
env.Append(LINKFLAGS=['--pre-js', prejs.path])
env.Append(LINKFLAGS=['--post-js', postjs.path])

Zip('#bin/godot', zip_files, ZIPSUFFIX=env['PROGSUFFIX'] + env['ZIPSUFFIX'], ZIPROOT=zip_dir, ZIPCOMSTR="Archving $SOURCES as $TARGET")