Hi i'm working with the lidar Slamtec Mapper M2M1 paired with a Jetson Nano packed with Ubuntu 18.04, ROS Melodic, and GCC 7.5.0 Linaro. When I try to compile the SDK I get the following error: Invoke "make -j4 -l4" failed. Does anybody, who knows or got a similar error can tell what this error is releated too, it's meaning, or at least explain the parameters -j4 and -l4.
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I've been trying to install dlib library for a while now and have tried almost all the solutions available on the web.
While installing this file I'm facing an error:
ERROR: dlib-19.7.0-cp36-cp36m-win_amd64.whl is not a supported wheel on this platform.
Help me. Any suggestions?
You need to install Cmake first as it is required for Dlib, get installation files from here or use pip install cmake.
Then install Anaconda 3.
Then run, pip install dlib to install dlib making sure that you're using python2, instead of python3.
Error message:
$ pip3 install opencv-contrib-python
ERROR: Could not find a version that satisfies the requirement opencv-contrib-python (from versions: none)
ERROR: No matching distribution found for opencv-contrib-python
Check the answer here.
You have to download source code from https://github.com/skvark/opencv-python, install compiler and necessary libraries and compile OpenCV yourself.
I'm trying to install opencv-python through pip but I keep getting an error. How do I go about it
I used normal 'pip install opencv-python' and it gave me an error, I downloaded the whl file and it still gave me an error
It gives me an error message like:
ERROR: Could not find a version that satisfies the requirement opencv-python (from versions: none)
ERROR: No matching distribution found for opencv-python
Please check the version of pip in your machine. Most probably the issue is due to non compatible version of pip. Try upgrading pip using 'pip install --upgrade pip'
I am trying to install OpenCV for python but what I need to do first is install some prerequisites using homebrew and it has all gone fine until I type in the command:
brew install eigen tbb
And thus the error displays:
Error: An unexpected error occurred during the `brew link` step
The formula built, but is not symlinked into /usr/local
I have looked at other solutions on SO but I am hesitant to try it in fear that I might lose documents/change directories/etc. If anyone has had a similar problem or can help me, PLEASE HELP!!
I am trying since two days to install OpenCV 2.3.0 or 2.3.1 on my mac 10.6.8 snow leopard. I followed the following commands
$ cd /Users/ateendra/Desktop/OpenCV-2.3.0/
$ mkdir build
$ cd build/
$ cmake -D CMAKE_OSX_ARCHITECTURES=i386 -D CMAKE_C/CXX_FLAGS=-m32 ..
$ ccmake .
$ make -j8
$ sudo make install
now i get the following errors
/Users/ateendra/Desktop/OpenCV-2.3.0/modules/highgui/src/grfmt_exr.hpp:83: error: reference to ‘PixelType’ is ambiguous
/System/Library/Frameworks/ApplicationServices.framework/Frameworks/QD.framework/Headers /QuickdrawTypes.h:193: error: candidates are: typedef SInt8 PixelType
/opt/local/include/OpenEXR/ImfPixelType.h:49: error: enum Imf::PixelType
/Users/ateendra/Desktop/OpenCV-2.3.0/modules/highgui/src/grfmt_exr.hpp:83: error: ‘PixelType’ does not name a type
make[2]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/src/loadsave.o] Error 1
make[1]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/all] Error 2
Well, this is a common problem to compile opencv under mac os, though it is usually solvable by modifying opencv sources a bit. (I faced this problem twice, and I always changed sources a bit to make everything compile).
However, the last time I was installing opencv, I've just used brew:
brew install opencv
Didn't have any problems with it.
I've managed to install OpenCV 2.3.1 on OSX 10.6.8, but I've done it using MacPorts, (which I recommend as it deals with dependencies and building for you):
Make sure you've got Apple Developer Tools installed (or at least XCode with the command line tools)
Install MacPorts (if you haven't done so already)
Install OpenCV via MacPorts:
sudo port install opencv
For more details see Build via MacPorts on the wiki.
I also have to mention that I did run into an error, but that was because of a previous existing dylib in the wrong place.