Build instructions

sp_midi uses cmake for build management.

Requisites:

Windows:

cmake (version 3.0 or later)
Microsoft Visual C++ 2019 (Community or Express editions are fine)

Linux (you can normally install all these using your distribution package manager)

cmake (version 3.0 or later)
gcc compiler (4.9 or later)
ALSA development libraries

Mac

Don't know yet...

Building

go to the root directory where you have the sp_midi sources (probably where this file is)
create build directory, and get into it (mkdir build, and then cd build)
It is normally enough to do cmake ... If cmake complains about not finding a library make sure that it is installed.
On Linux, if cmake was successful then it created the necessary Makefiles. Do make, and that will compile the code and create the binaries.
On Windows, if cmake was successful then it created the necessary Visual Studio solution and Project files. Open the sp_midi.sln file, and Build normally to create the binaries.