Off-topic but I can not avoid a tear of joy reading this: > In the Unix world, “portability” refers to porting to different Unix versions. For a GNU program, t

Off-topic but I can not avoid a tear of joy reading this: > In the Unix world, “portability” refers to porting to different Unix versions. For a GNU program, this kind of portability is desirable, but not paramount. The primary purpose of GNU software is to run on top of the GNU kernel, compiled with the GNU C compiler, on various types of CPU. So the kinds of portability that are absolutely necessary are quite limited. But it is important to support Linux-based GNU systems, since they are the form of GNU that is popular.