在CentOS上使用python模块安装OpenCV出错了

Question

当我运行此命令以使用Python模块安装OpenCV时

cmake ../ -DCMAKE_BUILD_TYPE=RELEASE 
-DCMAKE_INSTALL_PREFIX=/usr/local 
-DBUILD_EXAMPLES=ON 
-DBUILD_NEW_PYTHON_SUPPORT=ON 
-DINSTALL_PYTHON_EXAMPLES=ON 
-DPYTHON_EXECUTABLE=/usr/local/bin/python2.7 
-DPYTHON_INCLUDE_DIR=/usr/local/include/python2.7/ 
-DPYTHON_LIBRARY=/usr/local/lib/python2.7/config/libpython2.7.a 
-DPYTHON_NUMPY_INCLUDE_DIR=/usr/local/lib/python2.7/site-packages/numpy/core/include/ 
-DPYTHON_PACKAGES_PATH=/usr/local/lib/python2.7/site-packages/ 
-DBUILD_PYTHON_SUPPORT=ON

我收到此错误消息.

/usr/bin/ld: /usr/local/lib/python2.7/config/libpython2.7.a(abstract.o): relocation R_X86_64_32 
against `.rodata.str1.8' can not be used when making a shared object; recompile with -fPIC
/usr/local/lib/python2.7/config/libpython2.7.a: could not read symbols: Bad value
collect2: ld returned 1 exit status
make[2]: *** [lib/cv2.so] Error 1
make[1]: *** [modules/python/CMakeFiles/opencv_python.dir/all] Error 2
make: *** [all] Error 2

我无法理解错误和错误信息.

有人能告诉我这有什么问题吗？

顺便说一句,我的操作系统是CentOS.

我使用Python2.7.5

Answer 1

我回答我自己的问题.希望遇到同样问题的人能在短时间内找到解决问题的方法.

1.首先,使用yum更新所有pagackages我在安装OpenCV时遇到了几个归因于依赖性问题的bug.

 sudo yum update --skip-broken

2.用"--enable-shared"重建你的Python.使用python模块的OpenCV需要正确构建"libpython2.7.so"文件.但是,如果您刚刚构建了没有此配置的python,则可能是您没有此文件."libpython2.7.a"还不够.在我的例子中,当我将libpython2.7.a称为python库源时,它会不断崩溃.

所以..下载python 2.7.5(或类似的东西),然后像这样重新配置.

./configure --enable-shared
make
make install

现在你可能得到"libpython2.7.so"和"libpython2.7.so.1.0"

3.用python模块构建你的OpenCV.这是我在安装时编写的代码.我想这个例子可以帮助你解决问题.

cmake ../ -DCMAKE_BUILD_TYPE=RELEASE 
-DCMAKE_INSTALL_PREFIX=/usr/local 
-DBUILD_EXAMPLES=ON 
-DBUILD_NEW_PYTHON_SUPPORT=ON 
-DINSTALL_PYTHON_EXAMPLES=ON 
-DPYTHON_EXECUTABLE=/usr/local/bin/python2.7 
-DPYTHON_INCLUDE_DIR=/usr/local/include/python2.7/ 
-DPYTHON_LIBRARY=/usr/local/lib/libpython2.7.so.1.0 
-DPYTHON_NUMPY_INCLUDE_DIR=/usr/local/lib/python2.7/site-packages/numpy/core/include/ 
-DPYTHON_PACKAGES_PATH=/usr/local/lib/python2.7/site-packages/ 
-DBUILD_PYTHON_SUPPORT=ON

就这样.