I have modified the SDL port to be able to run the latest version of Handmade Hero on Linux, and added support for looped live code editing.
As I have no prior experience with SDL (or coding games in general) and used this as a learning experience, it is not the same high quality as David Gow's port. But since he apparently stopped working on his port this might help somebody.
The code can be found at
https://github.com/KimJorgensen/sdl_handmade
/Kim