The RX family C/C++ compiler package (CC-RX) is equipped with the following special features.

The C, C99, and C++ language specifications conform to the ANSI standard. Coexistence with prior C language specifications (K&R specifications) is also provided.

Code size and speed priority optimization for the C compiler are offered.

C language programming description ability has been improved due to enhanced language specifications.

The single CC-RX supports all microcontrollers. This makes it possible to use a uniform language specification, and facilitates porting between microcontrollers.

In addition, the industry-standard DWARF2/3 format is used for debugging information.