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Merge pull request #42561 from Faless/js/build_no_config

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[HTML5] Scons now expects "emcc" to be in PATH.
This commit is contained in:
Rémi Verschelde 2020-10-04 20:45:55 +02:00 committed by GitHub
commit 59e7a5a94f
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 6 additions and 25 deletions
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8
platform/javascript/detect.py
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@ -1,6 +1,7 @@
import os
from emscripten_helpers import parse_config, run_closure_compiler, create_engine_file
from emscripten_helpers import run_closure_compiler, create_engine_file
from SCons.Util import WhereIs
def is_active():
@ -12,7 +13,7 @@ def get_name():
def can_build():
return "EM_CONFIG" in os.environ or os.path.exists(os.path.expanduser("~/.emscripten"))
return WhereIs("emcc") is not None
def get_opts():
@ -100,9 +101,6 @@ def configure(env):
# Closure compiler extern and support for ecmascript specs (const, let, etc).
env["ENV"]["EMCC_CLOSURE_ARGS"] = "--language_in ECMASCRIPT6"
em_config = parse_config()
env.PrependENVPath("PATH", em_config["EMCC_ROOT"])
env["CC"] = "emcc"
env["CXX"] = "em++"
env["LINK"] = "emcc"

23
platform/javascript/emscripten_helpers.py
View file

@ -1,28 +1,11 @@
import os
def parse_config():
em_config_file = os.getenv("EM_CONFIG") or os.path.expanduser("~/.emscripten")
if not os.path.exists(em_config_file):
raise RuntimeError("Emscripten configuration file '%s' does not exist" % em_config_file)
normalized = {}
em_config = {}
with open(em_config_file) as f:
try:
# Emscripten configuration file is a Python file with simple assignments.
exec(f.read(), em_config)
except StandardError as e:
raise RuntimeError("Emscripten configuration file '%s' is invalid:\n%s" % (em_config_file, e))
normalized["EMCC_ROOT"] = em_config.get("EMSCRIPTEN_ROOT")
normalized["NODE_JS"] = em_config.get("NODE_JS")
normalized["CLOSURE_BIN"] = os.path.join(normalized["EMCC_ROOT"], "node_modules", ".bin", "google-closure-compiler")
return normalized
from SCons.Util import WhereIs
def run_closure_compiler(target, source, env, for_signature):
cfg = parse_config()
cmd = [cfg["NODE_JS"], cfg["CLOSURE_BIN"]]
closure_bin = os.path.join(os.path.dirname(WhereIs("emcc")), "node_modules", ".bin", "google-closure-compiler")
cmd = [WhereIs("node"), closure_bin]
cmd.extend(["--compilation_level", "ADVANCED_OPTIMIZATIONS"])
for f in env["JSEXTERNS"]:
cmd.extend(["--externs", f.get_abspath()])