The AUX compiler supports several languages: Ada, C, C++, Fortran and Objective-C. Since Ada support must be built by an Ada-capable compiler, only platforms for which a bootstrap compiler is available can build the AUX compiler. The AUX compiler is based on release versions of the Free Software Foundation's GNU Compiler Collection. It carries with it the GMGPL license, the modified version of the GPL that exempts generic instantiation from resulting in a GPL-licensed executable. It also carries the GCC Runtime Library Exception, so the resulting binaries have no licensing requirements. Binaries produced by the AUX compiler should be legally handled the same as binaries produced by any FSF compiler. The AUX GNAT compiler the full Ada-83, Ada-95, Ada-2005 standard and provides a partial implementation of Ada-2012. The Ada-2012 reference manual was submitted to the International Organization for Standardization (ISO) in June 2012. WWW: http://www.dragonlace.net/