- modern CMake is required for building a lot of new software
- CMake is dependency for many packages (e.g. ROS related)
- we don't want to remove CMake (which would remove packages that depend on it)
- we want safe procedure to update CMake that can be reversed easily
Check current version
apt-cache policy cmake
# get and build CMake
wget https://github.com/Kitware/CMake/releases/download/v3.20.0/cmake-3.20.0.tar.gz
tar -zvxf cmake-3.20.0.tar.gz
cd cmake-3.20.0
./bootstrap
make -j8
So that we can easily remove it later
sudo apt-get install checkinstall
# this will take more time than you expect
sudo checkinstall --pkgname=cmake --pkgversion="3.20-custom" --default
# reset shell cache for tools paths
hash -r
apt-cache policy cmake
cmake --version
which cmake
This step only if you want to revert back
- we don't want to remove cmake
- this could cause removal of packages that depend on it (e.g. ROS)
- instead we switch back to previous version
# idenitfy version of interest
apt-cache policy cmake
# switch to different version (from policy above)
apt-get install cmake=VERSION
Thank you.
Anyone on a fresh Ubuntu 18.04 desktop 'minimal' install will need to apt install
g++
andlibssl-dev
first.