attempting to port to DFBSD

[Duck Deux <duck2@xxxxxxxxxxxxxx>]

hello.

I am on DragonFly 4.8 https://www.dragonflybsd.org/

would like to port mc to this posixy system.

DFly forked from FBSD only 14 years ago, so I thought I could copy start-freebsd.s and abort-freebsd.s as start-dragonfly and abort-dragonfly.

I also copied over {ifreq, sys, syscall, syserrno}+freebsd-x64.myr, made new syscall table for sys+dragonfly. should probably do signals and errno too.

currently mbld dies with sigsegv. checked with GDB, looks like the mmap in getmem() does not really get the memory.

questions:
- how should I print without std? syscall(Syswrite... ?
- how to debug without gdb print command?
- any common pitfalls when porting to new system? so I don't reinvent multiple wheels

thx in advance.