Building Open RV on CentOS 7
Summary
Install Basics
Make sure we have some basic tools available on the workstation:
sudo yum install sudo wget git
Install devtoolset-9
By default the CentOS 7.9 built-in tools won’t match the requirements we have to build RV. Install devtoolset-9 to remedy the situation.
sudo yum install centos-release-scl
sudo yum-config-manager --enable rhel-server-rhscl-7-rpms
sudo yum install devtoolset-9
# Note that you have to activate this all of the time (or add it to shell user initialization (e.g.: .bashrc))
scl enable devtoolset-9 $SHELL
Install tools and build dependencies
Most of the build requirements can be installed using the following command:
sudo yum install alsa-lib-devel autoconf automake avahi-compat-libdns_sd-devel bison bzip2-devel cmake-gui curl-devel flex glew-devel libXcomposite libXi-devel libaio-devel libffi-devel ncurses-devel libtool libxkbcommon openssl-devel patch pulseaudio-libs pulseaudio-libs-glib2 mesa-libOSMesa mesa-libOSMesa-devel ocl-icd opencl-headers python3 python3-devel qt5-qtbase-devel readline-devel sqlite-devel tcl-devel tk-devel yasm zlib-devel
Install the python requirements
Some of the RV build scripts requires extra python packages. They can be installed using the requirements.txt at the root of the repository.
python3 -m pip install -r requirements.txt
Install CMake
You need CMake version 3.24+ to build RV. The yum-installable version is not quite recent enough, you’ll to build and install CMake from sources.
wget https://github.com/Kitware/CMake/releases/download/v3.24.0/cmake-3.24.0.tar.gz
tar -zxvf cmake-3.24.0.tar.gz
cd cmake-3.24.0
./bootstrap --parallel=32 # 32 or whatever your machine allows
make -j 32 # 32 or whatever your machine allows
sudo make install
cmake --version # confirm the version of you're newly installed version of CMake
cmake version 3.24.0
Install nasm
The nasm tool is required to build the libdav1d and ffmpeg dependencies.
The yum-provided version is slightly too old and you’ll required building from sources.
Fortunately, building nasm from source is as easy as it gets:
wget https://www.nasm.us/pub/nasm/releasebuilds/2.15.05/nasm-2.15.05.tar.gz
tar xf nasm-2.15.05.tar.gz
cd nasm-2.15.05
scl enable devtoolset-9 "$SHELL -c './configure'"
scl enable devtoolset-9 "$SHELL -c 'make -j'"
sudo make install
Install Qt
Download the last version of Qt 5.15.x that you can get using the online installer on the Qt page. Logs, Android, iOS and WebAssembly are not required to build OpenRV.
WARNING: If you fetch Qt from another source, make sure to build it with SSL support, that it contains everything required to build PySide2, and that the file structure is similar to the official package.