Which C runtime for MinGW and *BSD?

[Kai Nacke via Digitalmars-d]

Hi all!

I am trying to compile D code for MinGW and *BSD. Of course, I am 
using LDC.
The situation is a bit chaotic.

For MinGW, the compiler defines the versions Windows, Win32 and 
MinGW.
For *BSD, the compiler defines the *BSD version 
(FreeBSD/DragonFlyBSD/NetBSD/OpenBSD) and Posix.

If you try to compile druntime/Phobos:
- it compiles on FreeBSD :-)
- all other *BSD variants cause compile errors
- there are still some version(MinGW) sections in druntime but 
most of them moved to CRuntime_DigitalMars / CRuntime_Microsoft 
sections and are not available.

I like to clean this up. But what is the best way? Options are:

- create new sections for MinGW/DragonFlyBSD/NetBSD/OpenBSD and 
duplicate the definitions.
- define new C runtimes for MinGW (CRuntime_MinGW) and *BSD 
(CRuntime_libc).

MinGW/CRuntime_MinGW is a mix between the Windows and the GNU 
libraries. This requires some work.
CRuntime_libc could be used to consolidate the current code. As 
far as I know, BSD libc is also used by OS X and Solaris. This 
could reduce the amount of definitions.

Are there other solutions? What do you think?

Regards,
Kai