RHIDE is an IDE (integrated development environment). It is NOT a compiler. With RHIDE you can develop and debug your applications written in C, C++, Pascal and other languages for which you have a compiler which can be called from RHIDE.
The original system, RHIDE was written for, is DJGPP. Because of many requests and the increasing popularity I made RHIDE also available for GNU/Linux. Support for CYGWIN is still unstable.