Question

我已经按照以下步骤对Cython进行了简单的教程：

制作一个简单的python文件，testme.py：

print（“你好!!”）
使用cython创建一个c文件：

cython -a testme.py
使用gcc：
编译生成的testme.c文件
gcc -Os -I /usr/local/Cellar/python/2.7.12_2/Frameworks/Python.framework/Versions/2.7/include/python2.7 -o testme testme.c -lpthread -lm -lutil -ldl

结果是这样的几行：

Undefined symbols for architecture x86_64:
  "_PyCode_New", referenced from:
      _inittestme in testme-4ef125.o
  "_PyDict_New", referenced from:
      _inittestme in testme-4ef125.o
  "_PyDict_SetItem", referenced from:
      _inittestme in testme-4ef125.o
  "_PyErr_Clear", referenced from:
      _inittestme in testme-4ef125.o
      _main in testme-4ef125.o
  "_PyErr_Occurred", referenced from:
      _inittestme in testme-4ef125.o
      _main in testme-4ef125.o
  "_PyErr_Print", referenced from:
      _main in testme-4ef125.o
  "_PyErr_SetString", referenced from:
      _inittestme in testme-4ef125.o
  "_PyErr_WarnEx", referenced from:
      _inittestme in testme-4ef125.o
  "_PyExc_ImportError", referenced from:
      _inittestme in testme-4ef125.o
  "_PyExc_RuntimeError", referenced from:
      _inittestme in testme-4ef125.o

显然，缺少链接库。我有以下

/usr/lib/libpython2.6.dylib -> ../../System/Library/Frameworks/Python.framework/Versions/2.6/Python

但是将其添加到gcc命令会给我一个XXX not found错误：

gcc -Os -I /usr/local/Cellar/python/2.7.12_2/Frameworks/Python.framework/Versions/2.7/include/python2.7 -o hello testme.c -l/usr/lib/libpython2.6.dylib -lpthread -lm -lutil -ldl
ld: library not found for -l/usr/lib/libpython2.6.dylib

路径正确。图书馆在那里。

任何提示？

Answer 1

您需要链接正确的libpython。例如。 redis-stable。

FWIW ./src/redis-cli命令有点低级（仅处理将各个Cython模块编译为C），其中-lpython2.7命令稍微高一点level，可以在整个包上工作，还包括一个cython选项，用于处理编译C代码。这通常比尝试自己构建正确的cythonize命令更容易。

Cython，OS X和链接错误

1 个答案: