I have an error on my compile
I tried to fix it by downloading and installing gcc-tdm, because a forum mentioned this is a compiler issue, but I am still getting the same result.
Does anyone know how to solve this?
The version of GCC that CodeBlocks ships with doesn't support threads (or at least it was the case last time I checked). You'll have to install a better compiler, and configure CB to use it.
You can get a fresh version of GCC from MSYS2. Or you can install one of the numerous MinGW-w64 distributions.