The CE C Toolchain incorporates a variety of tools in order to build programs in C/C++ natively for the TI-84 Plus CE calculator series.
Visit the CE C Toolchain documentation. This site hosts all the information for working with the toolchain.
You can join us on the CE Programming Discord server in the #ez80-dev channel: Discord Chat Link.
If you prefer IRC, the chat is also bridged to the Efnet channel #ez80-dev.
Depending on how active the channel is you might not get a response.
In that case, post your questions here or here, and we will get back to you as soon as possible.