More Portable Magic

Several people have started working with these libraries, using a GNU environment. As a result a lot of compatibility improvements for GNU make and GNU awk have been committed to the repositories.

The Makefiles now have a brief table of usable targets and settings that can be overridden in Makefile.local.

Additionally the ability to output some debugging information on stderr, when DEBUG is defined in the environment, has been added to some of the awk scripts used for Makefile creation and µVision project file creation.

I'd greatly appreciate reports about how well all the make targets work with cygwin.