i use this cmake for installation opencv
cmake -D CMAKE_BUILD_TYPE=RELEASE \ -D CMAKE_INSTALL_PREFIX=/usr/local \ -D INSTALL_C_EXAMPLES=OFF \ -D INSTALL_PYTHON_EXAMPLES=ON \ -D OPENCV_EXTRA_MODULES_PATH=~/opencv_contrib/modules \ -D BUILD_EXAMPLES=ON ..
Everything seems right
Python 2:
-- Interpreter: /usr/bin/python2.7 (ver 2.7.12)
--
-- Python 3:
-- Interpreter: /usr/local/bin/python3 (ver 3.5.2)
-- Libraries: /usr/local/lib/libpython3.5m.a (ver 3.5.2)
-- numpy: /home/rezaoptic/.local/lib/python3.5/site-packages/numpy/core/include (ver 1.11.2)
-- packages path: lib/python3.5/site-packages
but when i use make -j4 in 100% i take this error
[100%] Linking CXX shared module ../../lib/python3/cv2.cpython-35m-x86_64-linux-gnu.so
/usr/bin/ld: /usr/local/lib/libpython3.5m.a(abstract.o): relocation R_X86_64_32S against `_Py_NotImplementedStruct' can not be used when making a shared object; recompile with -fPIC
/usr/local/lib/libpython3.5m.a: error adding symbols: Bad value
collect2: error: ld returned 1 exit status
modules/python3/CMakeFiles/opencv_python3.dir/build.make:224: recipe for target 'lib/python3/cv2.cpython-35m-x86_64-linux-gnu.so' failed
make[2]: *** [lib/python3/cv2.cpython-35m-x86_64-linux-gnu.so] Error 1
CMakeFiles/Makefile2:6985: recipe for target 'modules/python3/CMakeFiles/opencv_python3.dir/all' failed
make[1]: *** [modules/python3/CMakeFiles/opencv_python3.dir/all] Error 2
Makefile:160: recipe for target 'all' failed
make: *** [all] Error 2
what is wrong ? and how can i fix it ?
Edit Solve:
if someone have this problem careful about :
-- Libraries: /usr/local/lib/libpython3.5m.a (ver 3.5.2)
i change my cmake to :
cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local -D PYTHON3_EXECUTABLE=/usr/bin/python3.5 -D PYTHON_INCLUDE_DIR=/usr/include/python3.5 -D PYTHON_INCLUDE_DIR2=/usr/include/x86_64-linux-gnu/python3.5 -D PYTHON_LIBRARY=/usr/lib/x86_64-linux-gnu/libpython3.5m.so -D PYTHON3_NUMPY_INCLUDE_DIRS=/usr/lib/python3/dist-packages/numpy/core/include/ ..
and Then i have :
-- Libraries: /usr/lib/x86_64-linux-gnu/libpython3.5m.so (ver 3.5.2)
sorry for my English if someone have time edit my post for better English :)