buildcv2.sh

# buildcv2.sh
#!/bin/bash
yum -y install gcc gcc-c++ freetype-devel glib2-devel cairo-devel libtool
basePath=/mnt/Data/jason
python36Path=/mnt/Data/jason/env36

#install colm
cd {basePath}/jp-ocr/3rdparty/{colm}
./autogen.sh
./configure
rm CMakeCache.txt
cmake -DCMAKE_INSTALL_PREFIX=/usr/local
make
make install

#install ragel
cd {basePath}/jp-ocr/3rdparty/{ragel}
./autogen.sh
./configure
make
make install
make clean

#install harfbuzz
cd {basePath}/jp-ocr/3rdparty/{harfbuzz}
./autogen.sh
./configure
rm -rf CMakeCache.txt CMakeFiles
mkdir build; cd build; cmake ..
make
make install
make clean

#install opencv include freetype
mkdir build
cd build
yum -y install harfbuzz-devel harfbuzz

rm -f CMakeCache.txt
basePath=/mnt/Data/jason
cmake .. -DCMAKE_BUILD_TYPE=RELEASE -DCMAKE_INSTALL_PREFIX=/usr/local/ \
-DBUILD_opencv_python3=ON \
-DBUILD_EXAMPLES=ON \
-DOPENCV_EXTRA_MODULES_PATH=${basePath}/jp-ocr/3rdparty/opencv_contrib-3.4.1/modules

make -j5
sudo make install
make clean
ln -s /lib64/python3.6/site-packages/cv2/cv2.cpython-36m-x86_64-linux-gnu.so \
/mnt/Data/jason/env36/lib/python3.6/site-packages/

find / -name "cv2.so"
#for mac
basePath=/Users/jason/Documents/github
cmake .. -DCMAKE_BUILD_TYPE=RELEASE -DCMAKE_INSTALL_PREFIX=/usr/local/ \
-DOPENCV_EXTRA_MODULES_PATH=${basePath}/opencv_contrib/modules

###
-- Installing: /usr/local/lib/python2.7/site-packages/cv2.so
-- Set runtime path of "/usr/local/lib/python2.7/site-packages/cv2.so" to "/usr/local/lib64"
-- Installing: /usr/local/lib/python3.6/site-packages/cv2.cpython-36m-x86_64-linux-gnu.so
-- Set runtime path of "/usr/local/lib/python3.6/site-packages/cv2.cpython-36m-x86_64-linux-gnu.so" to "/usr/local/lib64"

###resoved by setting: ln -s /usr/bin/python3.6m /usr/bin/python3
--   Python 3:
--     Interpreter:                 NO
--     Libraries:                   NO
--     numpy:                       NO (Python3 wrappers can not be generated)
--     packages path:               -
--
--   Python (for build):            /usr/bin/python3.6m

#mac
--   Python 3:
--     Interpreter:                 /Library/Frameworks/Python.framework/Versions/3.5/bin/python3 (ver 3.5.2)
--     Libraries:                   /Library/Frameworks/Python.framework/Versions/3.5/lib/libpython3.5m.dylib (ver 3.5.2)
--     numpy:                       /Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/numpy/core/include (ver 1.13.1)
--     packages path:               lib/python3.5/site-packages
--
--   Python (for build):            /usr/bin/python2.7
--

cmake .. -DCMAKE_BUILD_TYPE=RELEASE -DCMAKE_INSTALL_PREFIX=/usr/local/
-DBUILD_opencv_python3=ON
-DBUILD_EXAMPLES=ON
-DOPENCV_EXTRA_MODULES_PATH=${basePath}/jp-ocr/3rdparty/opencv_contrib-3.4.3/modules

ln -s /usr/local/lib/python3.6/site-packages/cv2.cpython-36m-x86_64-linux-gnu.so
/mnt/Data/jason/env36/lib/python3.6/site-packages/