Build C-C++ projects (cmake)
git clone https://some-project
cd some-project
mkdir build
cd build
cmake ..
make
sudo make install
cmake - is a program that generates makefiles (and other things) from "cmake files". make - is a program that builds programs (and does other things) based on rules in makefiles. make install - invokes the make program to "build" the target named "install" (which can do anything at all, but usually installs something somewhere).
OR!
git clone https://some-project
cd some-project
mkdir build
cd build
cmake ..
cmake --build .
sudo cmake --build . --target install