Linux 使用 Cython 将 Python 编译为 C
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Compiling Python to C using Cython
提问by Forge
I'm trying to compile pythonsource code foo.py to C using cython.
我正在尝试将python源代码 foo.py编译为 C 使用cython.
In foo.py:
在foo.py：
print "Hello World"
The command I'm running is cython foo.py.
我正在运行的命令是cython foo.py.
The problem is that when compiling foo.c using gcc, I get the error:
问题是，在使用 编译 foo.c 时gcc，出现错误：
undefined reference to 'main'.
undefined reference to 'main'.
采纳答案by RoeeK
when converting the code from python to c (using Cython) it converts it to c code which can be compiled into a shared object.
in order to make it executable, you should add "--embed" to cython conversion command. this flag adds the 'main' function you need, so you could compile the c code into executable file.
please notice you'll need the python .soruntime libraries in order to run the exec.
将代码从 python 转换为 c（使用 Cython）时，它会将其转换为可以编译为共享对象的 c 代码。为了使其可执行，您应该在 cython 转换命令中添加“--embed”。这个标志添加了你需要的'main'函数，所以你可以将c代码编译成可执行文件。请注意，您需要 python.so运行时库才能运行 exec。
回答by Forge
Read the Cython documentation. This will also (hopefully) teach you what Cython is and what it isn't. Cython is for creating python extensions (not a general-purpose Python-to-C-compiler), which are shared objects/dlls. Dynamically loaded libraries don't have a mainfunction like standalone programs, but compilers assume that they are ultimately linking an executable. You have to tell them otherwise via flags (-sharedmethinks, but again, refer to the Cython documentation) - or even better, don't compile yourself, use a setup.pyfor this (yet again, read the Cython documentation).
阅读 Cython 文档。这也将（希望）教你 Cython 是什么，它不是什么。Cython 用于创建 python 扩展（不是通用的 Python 到 C 编译器），它们是共享对象/dll。动态加载的库main不像独立程序那样具有功能，但编译器假定它们最终链接的是可执行文件。您必须通过标志告诉他们其他情况（我认为-shared，但再次参考 Cython 文档） - 或者甚至更好，不要自己编译，setup.py为此使用 a （再次阅读 Cython 文档）。
回答by Fabian Pedregosa
The usual way is to use distutils to compile the cython-generated file. This also gives you all the include directories you need in a portable way.
通常的方法是使用 distutils 编译 cython 生成的文件。这也以可移植的方式为您提供了所需的所有包含目录。
