No UVC backend selected in python wrappers. #1220
Description
Issue Description
After building the lib from source, everything seems to work fine with examples, then when I try to build the python wrapper, the follow error was show to me
[ 5%] Building CXX object CMakeFiles/pyrealsense2.dir/python.cpp.o
[ 11%] Linking CXX shared library pyrealsense2.cpython-36m-x86_64-linux-gnu.so
[ 11%] Built target pyrealsense2
Scanning dependencies of target pybackend2
[ 17%] Building CXX object CMakeFiles/pybackend2.dir/home/real/librealsense/src/backend.cpp.o
/home/real/librealsense/src/backend.cpp:11:2: error: #error No UVC backend selected. Please #define exactly one of RS2_USE_LIBUVC_BACKEND, RS2_USE_WMF_BACKEND, or RS2_USE_V4L2_BACKEND
#error No UVC backend selected. Please #define exactly one of RS2_USE_LIBUVC_BA
^
CMakeFiles/pybackend2.dir/build.make:62: recipe for target 'CMakeFiles/pybackend2.dir/home/real/librealsense/src/backend.cpp.o' failed
make[2]: *** [CMakeFiles/pybackend2.dir/home/real/librealsense/src/backend.cpp.o] Error 1
CMakeFiles/Makefile2:104: recipe for target 'CMakeFiles/pybackend2.dir/all' failed
make[1]: *** [CMakeFiles/pybackend2.dir/all] Error 2
Makefile:127: recipe for target 'all' failed
make: *** [all] Error 2
I try to add the definition of v4l2 in the CMakeList.text but the build show me the following error
Scanning dependencies of target pyrealsense2
[ 5%] Building CXX object CMakeFiles/pyrealsense2.dir/python.cpp.o
[ 11%] Linking CXX shared library pyrealsense2.cpython-36m-x86_64-linux-gnu.so
[ 11%] Built target pyrealsense2
Scanning dependencies of target pybackend2
[ 17%] Building CXX object CMakeFiles/pybackend2.dir/home/real/librealsense/src/backend.cpp.o
[ 23%] Building CXX object CMakeFiles/pybackend2.dir/home/real/librealsense/src/win/win-helpers.cpp.o
[ 29%] Building CXX object CMakeFiles/pybackend2.dir/home/real/librealsense/src/win/win-uvc.cpp.o
[ 35%] Building CXX object CMakeFiles/pybackend2.dir/pybackend_extras.cpp.o
[ 41%] Building CXX object CMakeFiles/pybackend2.dir/pybackend.cpp.o
[ 47%] Building CXX object CMakeFiles/pybackend2.dir/home/real/librealsense/src/win/win-usb.cpp.o
[ 52%] Building CXX object CMakeFiles/pybackend2.dir/home/real/librealsense/src/win/win-backend.cpp.o
[ 58%] Building CXX object CMakeFiles/pybackend2.dir/home/real/librealsense/src/linux/backend-v4l2.cpp.o
In file included from /home/real/librealsense/src/linux/backend-v4l2.cpp:6:0:
/home/real/librealsense/src/linux/backend-v4l2.h:6:21: fatal error: backend.h: No such file or directory
compilation terminated.
CMakeFiles/pybackend2.dir/build.make:230: recipe for target 'CMakeFiles/pybackend2.dir/home/real/librealsense/src/linux/backend-v4l2.cpp.o' failed
make[2]: *** [CMakeFiles/pybackend2.dir/home/real/librealsense/src/linux/backend-v4l2.cpp.o] Error 1
CMakeFiles/Makefile2:104: recipe for target 'CMakeFiles/pybackend2.dir/all' failed
make[1]: *** [CMakeFiles/pybackend2.dir/all] Error 2
Makefile:127: recipe for target 'all' failed
make: *** [all] Error 2
| Required Info | |
|---|---|
| Camera Model | D400 |
| Firmware Version | 05.08.15.00 |
| Operating System & Version | Linux Ubuntu 16 |
| Kernel Version (Linux Only) | 4.10.0-28-generic |
| Platform | PC |
| SDK Version | git |
Activity
[-]No UVC backend selected.[/-][+]No UVC backend selected in python wrappers.[/+]zivsha commentedon Feb 24, 2018
Are you building the main
Cmakelists.txtor the one inside the python folder?You should build the main one and only pass the
-DBUILD_PYTHON_BINDINGS=ONflag.pedrogasg commentedon Feb 24, 2018
or the one inside the python folder<- Yeah this one was my problem, thanks for the helpIt works like a charm once you add the
-DBUILD_PYTHON_BINDINGS=bool:trueand the version on python you are using
-DPYTHON_EXECUTABLE=/home/real/miniconda3/envs/py36/bin/pythonminiconda python 3.6 in my case
One question though is necesary to add all the suffix to the build ?
My build name ->
pyrealsense2.cpython-36m-x86_64-linux-gnu.soThanks again this issue ca be closed