Switch to cmake 3.13

stop to use make because since CMake 3.15 (Ubuntu 20.04), Generator can be set in env CMAKE_GENERATOR and sometimes it is not the Unix Makefiles;
Tested in Ubuntu 24
P.S. Also you can install to non-system folder, see example https://askubuntu.com/a/1543849/1087530

Actually you can still try using old cmake 3.8, but the instruction is adapted for 3.13

Author: AndreiCherniaev

CMakeLists.txt

@@ -21,7 +21,7 @@
 ########################################################################
 # Project setup
 ########################################################################
-cmake_minimum_required(VERSION 3.13)
+cmake_minimum_required(VERSION 3.8)
 project(gr-satellites CXX C)
 enable_testing()
 

docs/source/installation.rst

@@ -95,11 +95,9 @@ inside the directory containing the gr-satellites sources:
 
 .. code-block:: console
 
-   $ git clone https://github.com/daniestevez/gr-satellites
-   $ cd gr-satellites/
    $ cmake -S . -B build
    $ cmake --build build --parallel
-   $ cmake --install build
+   $ sudo cmake --install build
    $ sudo ldconfig
 
 After running ``make``, you can run the tests by doing ``make test`` in the