当同时安装了python2和python3时，如何为python3构建opencv [英] how to build opencv for python3 when both python2 and python3 are installed

问题描述

我正在尝试为python3构建opencv.但是，即使我手动为python3指定include和lib选项，cmake仍将python build选项设置为python2.7.11:

I was trying to build opencv for python3. However, cmake always sets python build option to be python2.7.11 even after I manually specified include and lib option for python3:

    --   Python 2:
    --   Interpreter:                 /home/ryu/anaconda2/bin/python2.7 (ver 2.7.11)

    --   Python 3:
    --     Interpreter:                 /usr/bin/python3 (ver 3.4.3)
    --     Libraries:                   /usr/lib/x86_64-linux-gnu/libpython3.4m (ver 3.4.3)
    --     numpy:                       /home/ryu/.local/lib/python3.4/site-packages/numpy/core/include (ver 1.11.0)  

    --  packages path:               lib/python3.4/dist-packages

-- 
--   **Python (for build):            /home/ryu/anaconda2/bin/python2.7**

我错过了一些cmake选项吗?

Did I miss some cmake option?

操作系统:Ubuntu 14,04

OS: Ubuntu 14,04

谢谢

推荐答案

您可以在cmake调用过程中通过在Python可执行文件URI后面附加参数PYTHON_DEFAULT_EXECUTABLE来覆盖要构建的python可执行文件.

You can override the python executable to build to by appending the argument PYTHON_DEFAULT_EXECUTABLE with the python executable URI during the cmake invokation.

cmake {...} -DPYTHON_DEFAULT_EXECUTABLE=$(which python3) ..

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