cmake/OpenCVDetectPython.cmake:58 (find_host_package)

Python
1

I encountered this problem while CMake compiling. Does anyone know what I should do? Could you please help me take a look.

cmake .. -DCMAKE_BUILD_TYPE=Release \
        -DCMAKE_INSTALL_PREFIX=/usr/local \
        -DBUILD_SHARED_LIBS=ON \
        -DOPENCV_EXTRA_MODULES_PATH=../../opencv_contrib-4.10.0/modules \
        -DOPENCV_ENABLE_NONFREE=ON \
        -DBUILD_TESTS=ON -DBUILD_PERF_TESTS=ON \
        -DOPENCV_GENERATE_PKGCONFIG=ON \
        -DWITH_GTK=ON \
        -DWITH_CUDA=ON -DENABLE_FAST_MATH=ON -DCUDA_FAST_MATH=ON -D WITH_CUBLAS=ON \
        -DCUDA_ARCH_BIN=8.6 \
        -DWITH_CUDNN=ON -DOPENCV_DNN_CUDA=ON \
        -DWITH_IPP=ON -DWITH_TBB=ON -DWITH_OPENMP=ON -DWITH_PTHREADS_PF=ON \
        -DOPENCV_PYTHON3_VERSION=ON \
        -DPYTHON3_EXECUTABLE=/usr/bin/python3 \
        -DPYTHON3_LIBRARY=$(python3 -c "import sysconfig; from os.path import join; print(join(sysconfig.get_config_var('LIBDIR'), sysconfig.get_config_var('LDLIBRARY')))") \
        -DPYTHON3_NUMPY_INCLUDE_DIRS=$(python3 -c "import numpy; print(numpy.get_include())") \
        -DPYTHON3_PACKAGES_PATH=$(python3 -c "import sysconfig; print(sysconfig.get_path('purelib'))") \
        -DWITH_OPENGL=ON

-- ocv_init_download: OpenCV source tree is not fetched as git repository. 3rdparty resources will be downloaded from github.com by default.
-- Detected processor: x86_64
CMake Error at cmake/OpenCVUtils.cmake:144 (find_package):
  find_package called with invalid argument "ON"
Call Stack (most recent call first):
  cmake/OpenCVDetectPython.cmake:58 (find_host_package)
  cmake/OpenCVDetectPython.cmake:286 (find_python)
  CMakeLists.txt:678 (include)


-- Python is not found: ON EXACT
-- Looking for ccache - not found
2

that’s step 0.001.
if you want to build from src, it needs to download it from github, but it could not.

it needs internet access while running cmake !

anyway, do yourself a favour, and dl the opencv repos before that using git clone

3

@berak Hello, I am the source code of 4.10.0 downloaded from “Release OpenCV 4.10.0 · opencv/opencv · GitHub”.
And I use CMake GUI as if it was no problem after compilation.
I don’t know what to do. Could you help me,？thank you
(My English is not very good. It is translated by Google. If there is any impolite place, please don’t mind.)

4

so, now to python…

what do you have installed, exactly ? (more than 1 py ?)
you’re using python scripts to locate it from cmake, please show the result of those (run them on plain cmdline)

(ps, i closed your other q. on same topic, no duplicates, please)

1 Like
5

Sorry，I will be careful not to submit duplicate topics again next time.
This followings is the path I ran using a python3 script.Please help me.

        -DOPENCV_PYTHON3_VERSION=ON \
        -DPYTHON3_LIBRARY=/usr/lib/x86_64-linux-gnu/libpython3.11.so \
        -DPYTHON3_NUMPY_INCLUDE_DIRS=/usr/lib/python3/dist-packages/numpy/core/include \
        -DPYTHON3_PACKAGES_PATH=/usr/local/lib/python3.11/dist-packages \
1 Like