the Open Watcom is a joint effort between SciTech Software, Sybase®, and a select team of developers, which will bring the Sybase Watcom C/C++ and Fortran compiler products to the Open Source community.
comprises the GNU C compiler targeted at the ARM processor of ARM-based HP calculators (like the HP49g+), HP specific libraries, a tool (ELF2HP) that converts the gcc produced binary to the appropriate format for the HP calculator, and an emulator
a Linux-like environment for Windows. A way to run native linux apps on Windows and make way to magically make native Windows apps aware of UNIX ® functionality after a rebuild.