39 lines
1.5 KiB
Python
39 lines
1.5 KiB
Python
import os
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def parse_config():
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em_config_file = os.getenv("EM_CONFIG") or os.path.expanduser("~/.emscripten")
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if not os.path.exists(em_config_file):
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raise RuntimeError("Emscripten configuration file '%s' does not exist" % em_config_file)
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normalized = {}
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em_config = {}
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with open(em_config_file) as f:
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try:
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# Emscripten configuration file is a Python file with simple assignments.
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exec(f.read(), em_config)
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except StandardError as e:
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raise RuntimeError("Emscripten configuration file '%s' is invalid:\n%s" % (em_config_file, e))
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normalized["EMCC_ROOT"] = em_config.get("EMSCRIPTEN_ROOT")
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normalized["NODE_JS"] = em_config.get("NODE_JS")
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normalized["CLOSURE_BIN"] = os.path.join(normalized["EMCC_ROOT"], "node_modules", ".bin", "google-closure-compiler")
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return normalized
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def run_closure_compiler(target, source, env, for_signature):
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cfg = parse_config()
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cmd = [cfg["NODE_JS"], cfg["CLOSURE_BIN"]]
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cmd.extend(["--compilation_level", "ADVANCED_OPTIMIZATIONS"])
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for f in env["JSEXTERNS"]:
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cmd.extend(["--externs", f.get_abspath()])
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for f in source:
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cmd.extend(["--js", f.get_abspath()])
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cmd.extend(["--js_output_file", target[0].get_abspath()])
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return " ".join(cmd)
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def create_engine_file(env, target, source, externs):
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if env["use_closure_compiler"]:
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return env.BuildJS(target, source, JSEXTERNS=externs)
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return env.Textfile(target, [env.File(s) for s in source])
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