python–使用distutils,其中swig接口文件位于src文件夹中

我有一个看起来像这样的setup.py：

from setuptools import setup, Extension
import glob
sources = glob.glob('src/*.cpp') + glob.glob('src/*.i')
# this is ugly, but otherwise I get the wrapper included twice
sources = [source for source in sources if '_wrap' not in source]
setup(
name = 'engine',
ext_modules = [
Extension(
'_engine',
sources = sources,
swig_opts = ['-c++'],
include_dirs = ['src']
)
],
py_modules = ['engine']
package_dir = {'' : 'src'}
)


现在只要我运行安装两次就行了.第一次,swig在src目录中创建engine.py.但它不会被复制到目标.第二次运行setup.py文件时,发现并安装了engine.py.有没有办法让它第一次全部工作？

解决方法:

我同意这应该开箱即用,并认为它是一个错误.

实现这一目标的一个选择是简单地改变构建事物的顺序.默认情况下,setup.py将首先收集python模块,然后构建任何外部包.

您可以通过对默认构建类进行子类化来更改构建顺序,然后让setup.py通过cmdclass选项使用您的自定义构建类.

from setuptools import setup, Extension
from distutils.command.build import build as _build
#Define custom build order, so that the python interface module
#created by SWIG is staged in build_py.
class build(_build):
# different order: build_ext *before* build_py
sub_commands = [('build_ext', _build.has_ext_modules),
('build_py', _build.has_pure_modules),
('build_clib', _build.has_c_libraries),
('build_scripts', _build.has_scripts),
]
setup(
name = 'engine',
cmdclass = {'build': build }, #Use your own build class
ext_modules = [Extension('_engine',
sources = sources,
swig_opts = ['-c++'],
include_dirs = ['src']
)],
...