If machinetype or osversion are executed from other than the current working directory
they will fail to execute the config.guess script because it was invoked with "./config.guess".
This update attempts to determine the directory where machinetype or osversion
were found and uses the same path to invoke config.guess.
Add m68k to recognized CPUs (machinetype)
Add amigaos to recognized operating systems (osversion)
Add ability to override "config.guess" output w/ LDEARCH= to osversion
Add platform.h clauses to recognize AmigaOS 3 using gcc to cross-compile
* Support building on OpenBSD, x86-64
* Clean up OpenBSD Makefile
* Add OpenBSD to cmake build
* Use clang as CC for OpenBSD
Co-authored-by: Alex Segura <alex@lispm.dev>
The config.guess script returns "aarch64-apple-darwin20.1.0" for an M1 Big Sur mac mini.
modified: bin/machinetype
new file: bin/makefile-darwin.aarch64-x
Update osversion script to recognize x86_64 triples for Darwin as Darwin
Update machinetype script to return 386 for MacOS El Capitan (10.11), x86_64 for other versions
Add makefile-darwin.x86_64-x for compiling in 64-bit mode on later MacOS versions
modified: config.guess
modified: machinetype
new file: makefile-darwin.x86_64-x
modified: osversion
