i try to have a v4l source from my c920 logitech camera with gstreamer . I have an odroid XU4 with ubuntu 14.04 version 4.9 . I 'm trying to use the hardware acceleration to avoid using a lot of CPU .
I installed gstreamer from source since version > 1.2 is not available directly for ubuntu 14.04
I did it like this :
git clone -b 1.10 https://github.com/GStreamer/gstreamer.git
cd gstreamer
./autogen.sh
make -j
sudo make install
sudo ldconfig
I followed this tutorial :
https://forum.odroid.com/viewtopic.php?f=146&t=24366
I did the build from source for each dependencies needed by the tutorial in this order:
- gst-plugins-base
- gst-libav
- gst-plugins-bad
after that I get gst-plugins-good from https://github.com/mihailescu2m/gst-plugins-good and compile/install it
But I try to make I get this error :
gstv4l2videodec.c:48:3: error: conflicting types for 'GstV4l2VideoCData'
} GstV4l2VideoCData;
I don't understand where that come from and did not find any solution on the web. I don't want to break anything so I don't want to install wrong versions of libraries . Any idea of the source of the bug ?
Thanks for your help , i'm quite a noobie with odroid so sorry if the answer is obvious.
I fixed the error by applying this patch to the files concerned : https://github.com/fnoop/gst-plugins-good/commit/3825320c95740d57501638563cdf2546dc016846
but now I get an error when I 'm trying to run
dpkg-buildpackage -us -uc -b -j4
I get :
dpkg-checkbuilddeps: Unmet build dependencies: libgstreamer1.0-dev (>= 1.8.0) libgstreamer-plugins-base1.0-dev (>= 1.8.1) gstreamer1.0-plugins-base (>= 1.8.0) libsoup2.4-dev (>= 2.48) gstreamer1.0-doc gstreamer1.0-plugins-base-doc
I don't know how to install the correct versions of libgstreamer-plugins-base1.0-dev and libgstreamer1.0-dev for Ubuntu 14.04.
Does anyone know how to get to this ?
dpkg-checkbuilddeps searches for packages installed through .deb files. This excludes installations that don't use the debian package mechanism (in your case the gstreamer package).
You can always modify the debian/build-deps file in your gst-plugins-good repo by removing the (>= 1.8.0) for instance for all unmet dependencies. Then you can try to see if the build succeeds anyway. But then you have to make sure you installed all missing deps by hand with there correct version.
Related
I have seen some questions similar to this on this website old latest.
But none of them have been answered and I am unable to comment there because I have less reputation points.
When I run sudo apt install g++ I get the following error:
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
g++ : Depends: gcc (= 4:9.3.0-1ubuntu2) but it is not going to be installed
Depends: g++-9 (>= 9.3.0-3~) but it is not going to be installed
Depends: gcc-9 (>= 9.3.0-3~) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
When I run sudo apt install build-essential
I get the following error:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
build-essential : Depends: gcc (>= 4:9.2) but it is not going to be installed
Depends: g++ (>= 4:9.2) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
I need to install g++ in ubuntu20.04.
Thanks for the help!
I found a work around by installing aptitude first.
I followed the following steps:
sudo apt-get install aptitude
Then aptitude gives a list of packages (none of which were installed)
and asks to keep those packages in the same version. Choose No (n).
Then aptitude asks to downgrade some packages. Choose Yes (Y).
Finally run the command: sudo aptitude install build-essential
After running the above command g++ was already install and I didn't need to separately install it.\
I am trying to install gdb-multiarch on ubuntu 18.04. When I use sudo apt-get install gdb-multiarch, I am getting following error.
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
gdb-multiarch : Depends: gdb (= 8.1-0ubuntu3.2) but it is not going to be installed
Depends: libpython3.6 (>= 3.6.5) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
I couldn't find a way to install above dependencies.
It's probably caused by an installation of a version of python that wasn't included with your Ubuntu install so your package manager is confused about what to do.
This worked for me:
https://askubuntu.com/questions/1061762/ubuntu-18-04-cant-upgrade-because-of-libpython3-6-version-conflicts
To give as much background as possible -
I have a machine learning model trained using keras i'm trying to embed on an nvidia jetson tx2.
I have set up tensorflow on there (a bit of a pain in itself) however when i run my script i'm hitting an error with protobuf.
Using TensorFlow backend.
[libprotobuf FATAL google/protobuf/stubs/common.cc:61] This program requires version 3.1.0 of the Protocol Buffer runtime library, but the installed version is 2.6.1. Please update your library. If you compiled the program yourself, make sure that your headers are from the same version of Protocol Buffers as your link-time library. (Version verification failed in "external/protobuf/src/google/protobuf/any.pb.cc".)
terminate called after throwing an instance of 'google::protobuf::FatalException'
what(): This program requires version 3.1.0 of the Protocol Buffer runtime library, but the installed version is 2.6.1. Please update your library. If you compiled the program yourself, make sure that your headers are from the same version of Protocol Buffers as your link-time library. (Version verification failed in "external/protobuf/src/google/protobuf/any.pb.cc".)
Aborted (core dumped)
So - i upgraded protobuf using pip at first but i thought the clash is because c++ version is taking priority and the version in linux was still stating 2.6.1 however after building in c++ the version is now shown as 3.1.0 however i am still getting the same error.
From the nvidia dev forums i received some feedback
"/usr/lib/aarch64-linux-gnu/libprotobuf.so.9.0.1
This means that C/C++ code will find version 2.6.
pip install protobuf-3.1.0-py2.py3-none-any.whl
This means that Python code will find version 3.1.
You need to upgrade the C++ (system) library to match version 3.1.
I don't think there's a default package on Ubuntu that does this, so you will have to either hack it by building your own and installing it on top of the system package, or you will have to find a deb package that has a newer version that will still install on your current system."
Ive really been struggling with this as i cant find a way to upgrade the system files. Any help would be much appreciated
Thanks
edit: i'm also wondering could this be a clash with GTK (i am also using openCV here so thats worth a mention!)
Please check your version of libprotobuf-dev.
Please try to uninstall your existing one on your PC with following commands:
apt-get remove --purge libprotobuf-dev
Then, build new version of libprotobuf-dev:
apt-get install autoconf automake libtool curl make g++ unzip
wget https://github.com/google/protobuf/releases/download/v3.5.0/protobuf-cpp-3.5.0.tar.gz
tar -xvf protobuf-cpp-3.5.0.tar.gz
cd protobuf-3.5.0
./autogen.sh
./configure
make
make check
sudo make install
sudo ldconfig
Good luck.
References:
https://github.com/BVLC/caffe/issues/5711
https://github.com/google/protobuf/issues/2979
step 1:
first, uninstall with purge protobuf
sudo apt-get remove --purge libprotobuf
step 2:
start a fresh one
$ wget https://raw.githubusercontent.com/jkjungavt/jetson_nano/master/install_protobuf-3.6.1.sh
sudo chmod +x install_protobuf-3.6.1.sh
./install_protobuf-3.6.1.sh #this time will take 30 min on my board.
I have been trying for quite some time to install g++ 7 on my Debian machine. I was able to install it quite easily on my mac (as homebrew had a formula for it). However I cannot seem to find a way to install it on Linux.
This individual had a thread on installing g++ 4.9, and changing the url he gave led me to this page, which seems to be in the right direction... But I imagine installing it this way might lead to a few potential problems down the road when I wish to update these packages.
Is there a source I'm missing? Or is there maybe a place where I can download and compile everything I need to get it running?
Thank you for your help.
Helpful Data:
My kernel is x86_64 Linux 3.16.0-4-amd64.
Edit: After following Dietrich's advice, I am now met with a new error:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
gcc-7 : Depends: cpp-7 (= 7-20170316-1) but it is not going to be installed
Depends: libcc1-0 (>= 7-20170316-1) but it is not going to be installed
Depends: binutils (>= 2.28) but 2.25-5+deb8u1 is to be installed
Depends: libgcc-7-dev (= 7-20170316-1) but it is not going to be installed
Depends: libisl15 (>= 0.15) but it is not installable
Depends: libmpfr4 (>= 3.1.3) but 3.1.2-2 is to be installed
Depends: libstdc++6 (>= 5) but 4.9.2-10 is to be installed
E: Unable to correct problems, you have held broken packages.
This is how my sources.list is set up:
#------------------------------------------------------------------------------#
# OFFICIAL DEBIAN REPOS
#------------------------------------------------------------------------------#
###### Debian Main Repos
deb http://ftp.us.debian.org/debian/ jessie main contrib non-free
deb-src http://ftp.us.debian.org/debian/ jessie main contrib non-free
###### Debian Update Repos
deb http://security.debian.org/ jessie/updates main contrib non-free
deb http://ftp.us.debian.org/debian/ jessie-proposed-updates main contrib non-free
deb-src http://security.debian.org/ jessie/updates main contrib non-free
deb-src http://ftp.us.debian.org/debian/ jessie-proposed-updates main contrib non-free
###### For ffmpeg
deb http://www.deb-multimedia.org jessie main non-free
###### For gcc-7 (Experimental)
deb http://httpredir.debian.org/debian experimental main
I'm guessing this is, as you said, a problem with me being on Debian stable? What would I need to do in order to fix this error, while remaining on stable?
Edit 2: Okay, so I figured out that last error. I just had to add go through for every individual dependency that gave my trouble and install it using apt-get install -t testing . Thank you to everyone who replied. You were all very helpful.
You can find similar in the Stack Overflow Unix pages
To install the newest g++ from testing on debian, do the following:
Add debian testing repo to your apt sources by creating a file (with .list extension) on /etc/apt/sources.list.d folder containing the line
deb http://ftp.us.debian.org/debian testing main contrib non-free
Instruct debian to use testing sources on certain packages by creating a file on /etc/apt/preferences.d containing the following:
Package: *
Pin: release a=testing
Pin-Priority: 100
You should name the file something like preferences or testingpref,etc. If you have a preferences file, you can add it there. Remove the .unused or any . in the filename.
Update database:
sudo apt-get update
Install g++:
sudo apt-get install -t testing g++
This will give you the most recent version of g++ in the repo. Thus it will receive updates and more-easily reversable. You need to use -t testing to get most recent versions.
You may have dependency issues. It may be in experimental instead of testing for your architecture. See https://packages.debian.org/search?keywords=g%2B%2B
For experimental packages (7 is in there) add:
deb http://httpredir.debian.org/debian experimental main
to /etc/apt/sources.list . Similar to above.. pinning should say a=experimental instead of a=testing and lastly,
sudo apt-get install -t experimental g++
Good luck.
The kernel is irrelevant.
GCC 7 has not been released yet, as you can see in the GCC 7 release notes:
Disclaimer: GCC 7 has not been released yet, so this document is a work-in-progress.
You may want to learn about what makes different Linux distros different. In particular, what a rolling distribution is, and how Debian releases work. In a rolling distribution, all of the packages continually get updated to newer versions. Debian 8.7 (Jessie / stable) is not a rolling distribution. The packages versions are frozen and only updated when necessary, for extra stability. The latest version of GCC on Debian 8.7 is GCC 4.9.
Debian 9.0 (Stretch / testing) is a rolling release, at least until it gets frozen. If you switch your computer to Stretch you will get GCC 6.3.
If you need something newer, you can either switch to Sid (unstable), or pin packages from Sid.
However, GCC 7 is only available in experimental because it hasn't been released yet. You can install a single package from experimental if you like, see Debian Experimental for instructions.
Howto
Add to your /etc/apt/sources.list
https://wiki.debian.org/DebianExperimental
Then
apt-get update
apt-get -t experimental install gcc-7
From the page you must download the g++7 for amd64 deb file. Then, as root, run the following command.
dpkg -i file.deb
I am using a virtualenv for a django setup. I am trying to build a view that pulls data from logs and then graphs the data. Eventually I would like to have this real-time and live. If you have any recommendations on other solutions that would suit my project best, please do not hesitate to include them in the comment fields below.
I have attempted to install matplotlib from pip using pip install matplotlib.
I receive the following message:
* The following required packages can not be built:
* freetype
I then validated that it was installed
yum install freetype
Package freetype-2.3.11-14.el6_3.1.x86_64 already installed and latest version
I then found that there is a python-matplotlib which is an older version .99. However, I want to keep this inside of the virtual environment and not system wide.
find / -name *freetype*
/var/lib/yum/yumdb/f/d2807dcfe3762c0b9f8ef1d9bf0f05788e73282a-freetype-2.3.11-14.el6_3.1- x86_64
/usr/lib64/libfreetype.so.6.3.22
/usr/lib64/libfreetype.so.6
/usr/share/doc/freetype-2.3.11
I searched all over stackoverflow and only saw solutions for ubuntu which did not transfer over to centos.
Thank you for your time,
John
pip is going to compile matlibplot on your local machine, so you'll need freetype development headers installed as well.
CentOS 6+, Fedora, etc.:
$ sudo yum -y install freetype freetype-devel libpng-devel
On older operating systems (e.g. CentOS 5), you may run into a more specific freetype versioning issue with newer releases of matlibplot. If you're version agnostic, sticking with a legacy 1.3.x release will negate these dependency issues:
$ pip install matplotlib==1.3.1
Please note, you may need to downgrade your numpy to 1.8 in order to make matplotlib 1.3 work.
$ pip install numpy==1.8
Good luck!
I have just had a similar (albeit not exactly the same) situation. I'll write it up here as this page comes up among the first search results.
CentOS 5
pip install matplotlib complains about freetype
Both freetype and freetype-devel are installed.
~/.pip/pip.log provides the explanation of the problem. There is the line:
freetype: no [Requires freetype2 2.3 or later. Found 2.2.1.]
Obviously, the solution is either to upgrade freetype or downgrade matplotlib.
The second is easier (assuming I am OK with the older version).
pip install matplotlib==1.3.1 works fine.
On the matplotlib installation, this is what I did. Not sure if this is going to help you. Just followed the steps here:
http://pkgs.org/centos-6/centos-x86_64/python-matplotlib-0.99.1.2-1.el6.x86_64.rpm.html
I did not use pip, btw and have CentOS 6.4.
I had this happen to me in two different situations, see if yours is one of them:
freetype was installed, but not in the $PATH yet. Just exiting the shell and starting a new one fixed this.
I was building matplotlib from source, and trying to build from the master branch. After I switched to v1.3.x it correctly detected freetype.