我正在阅读 emscripten 的教程 - https://github.com/kripken/emscripten/wiki/Tutorial
到目前为止，我已经下载了源代码并安装了依赖项并适当地设置了我的 .emscripten 设置文件。
以下是设置：
# This file will be copied to ~/.emscripten if that file doesn't exist. Or, this is that copy.
# IMPORTANT: Edit the *copy* with the right paths!
#EMSCRIPTEN_ROOT = os.path.expanduser('~/Dev/emscripten') # this helps projects using emscripten find it
EMSCRIPTEN_ROOT = os.path.expanduser('~/softwares/kripken-emscripten-12e45ea')
#LLVM_ROOT = os.path.expanduser('~/Dev/llvm-3.0/cbuild/bin')
LLVM_ROOT = os.path.expanduser('/usr/bin')
# See below for notes on which JS engine(s) you need
NODE_JS = 'node'
SPIDERMONKEY_ENGINE = [os.path.expanduser('~/Dev/mozilla-central/js/src/js'), '-m', '-n']
V8_ENGINE = os.path.expanduser('~/Dev/v8/d8')
TEMP_DIR = '/tmp'
########################################################################################################
# Pick the JS engine to use for running the compiler. This engine must exist, or
# nothing can be compiled.
#
# Recommendation: If you already have node installed, use that. Otherwise, build v8 or
# spidermonkey from source. Any of these three is fine, as long as it's
# a recent version (especially for v8 and spidermonkey).
COMPILER_ENGINE = NODE_JS
#COMPILER_ENGINE = V8_ENGINE
#COMPILER_ENGINE = SPIDERMONKEY_ENGINE
# All JS engines to use when running the automatic tests. Not all the engines in this list
# must exist (if they don't, they will be skipped in the test runner).
#
# Recommendation: If you already have node installed, use that. If you can, also build
# spidermonkey from source as well to get more test coverage (node can't
# run all the tests due to node issue 1669). v8 is currently not recommended
# here because of v8 issue 1822.
JS_ENGINES = [NODE_JS, SPIDERMONKEY_ENGINE]
但是，当我使用以下命令在测试目录中的测试程序中运行 emcc 时：
./emcc tests/hello_world.cpp
我收到错误消息：
error: unknown argument: '-nostdsysteminc'
emcc: compiler frontend failed to generate LLVM bitcode, halting
我无法理解为什么会发生此错误。