I can't to compile it correctly

[BobLiu20]

I use python2 and cmake 2.8.

1. enter test
2. do 'cmake .'
3. do 'make'
4. lost of error happen.

for example:
'''
In file included from /usr/local/include/opencv2/core.hpp:60:0,
from my_lib_wrap.cxx:3309:
/usr/local/include/opencv2/core/persistence.hpp:741:25: note: cv::FileStorage& cv::operator<<(cv::FileStorage&, const cv::String&)
CV_EXPORTS FileStorage& operator << (FileStorage& fs, const String& str);
^
/usr/local/include/opencv2/core/persistence.hpp:741:25: note: no known conversion for argument 1 from ‘std::ostream {aka std::basic_ostream}’ to ‘cv::FileStorage&’
/usr/local/include/opencv2/core/persistence.hpp:1059:14: note: template cv::FileStorage& cv::operator<<(cv::FileStorage&, const _Tp&)
FileStorage& operator << (FileStorage& fs, const _Tp& value)
^
/usr/local/include/opencv2/core/persistence.hpp:1059:14: note: template argument deduction/substitution failed:
In file included from /usr/local/include/opencv2/core.hpp:3163:0,
from my_lib_wrap.cxx:3309:
/usr/local/include/opencv2/core/operations.hpp:3994:12: note: cannot convert ‘out’ (type ‘std::ostream {aka std::basic_ostream}’) to type ‘cv::FileStorage&’
out << "[" << p.x << ", " << p.y << "]";
'''

[BobLiu20]

Do you have any idea for me ? Thank you .

[renatoGarcia]

It sounds like the std::ostream& operator<<(std::ostream&, <opencv type>) functions aren't being found. If that is the problem, you can solve it by putting an #include <file.hpp> inside a %header section of your SWIG project file, where <file.hpp> is the OpenCV source file defining that functions.
What is the SWIG and OpenCV versions you are using? Could you share a minimal project that raise that error?

[BobLiu20]

Hi , Thank you for your feedback.
I just build your sample in test folder. it is lots of errors appear.
Anyway , I also coding following your README.md , the same error again.
My SWIG is 2.0.11 and OpenCV is 2.4.11. (By the way , python2 and cmake 2.8 in Ubuntu14.04)

[renatoGarcia]

@BobLiu20 I have added support to OpenCV 2.4.11 and Python 2. Could you please run the tests again? The only difference between ours systems is that I'm using SWIG version 3.

[BobLiu20]

thank you guy . it seems ok .