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.
Or just grab the latest release here.
You can join the
#ez80-dev EFnet IRC channel for quick questions. (webchat link)
Depending on how active the channel is you might not get a response. In that case, post your questions here, and we will get back to you as soon as possible.