python - Xcode 更新后，“python3 setup.py build_ext --inplace”中断，因为它使用 libstdc++ 而不是 libc++

Question

我将 xcode-select install 更新到了最新版本，它不再支持 libstdc++，因此运行时找不到诸如“iostream”之类的库：

$ python3 setup.py build_ext --inline

错误信息

running build_ext
building '_pafprocess' extension
swigging pafprocess.i to pafprocess_wrap.cpp
swig -python -c++ -o pafprocess_wrap.cpp pafprocess.i
/usr/bin/clang -fno-strict-aliasing -Wsign-compare -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -arch i386 -arch x86_64 -g -I/Users/luchovilla/Py/posEst/lib/python3.6/site-packages/numpy/core/include -I. -I/Library/Frameworks/Python.framework/Versions/3.6/include/python3.6m -c pafprocess.cpp -o build/temp.macosx-10.6-intel-3.6/pafprocess.o
warning: include path for stdlibc++ headers not found; pass '-std=libc++' on the command line to use the libc++
      standard library instead [-Wstdlibcxx-not-found]
pafprocess.cpp:1:10: fatal error: 'iostream' file not found
#include <iostream>
         ^~~~~~~~~~
1 warning and 1 error generated.
error: command '/usr/bin/clang' failed with exit status 1

我找到了这个解释：ld: library not found for -lstdc++.6

而这个模糊的解决方案：https ://forums.developer.apple.com/thread/106114

有没有办法可以将传递'-std = libc++'附加到clang命令？

Setup.py 文件如下所示：

from distutils.core import setup, Extension
import numpy
import os

# os.environ['CC'] = 'g++';
setup(name='pafprocess_ext', version='1.0',
    ext_modules=[
        Extension('_pafprocess', ['pafprocess.cpp', 'pafprocess.i'],
                  swig_opts=['-c++'],
                  depends=["pafprocess.h"],
                  include_dirs=[numpy.get_include(), '.'])
    ],
    py_modules=[
        "pafprocess"
    ]
)

标签： pythonxcodesetup.pylibstdc++libc++