64 Support on Mac, FreeBSD

[Walter Bright]

On 5/6/2011 9:58 PM, dsimcha wrote:
> Purely out of curiosity (as in I personally have no pressing need for it), what
> are the main roadblocks to DMD supporting 64-bit on Mac OS and FreeBSD? I
> understand that on Windows we'd need a new linker, etc, but IIUC FreeBSD and Mac
> OS use GCC like Linux does.

I don't think there are any technical problems, just a lot of detail work.

Mac OS64 will be harder because there's that Mach-O format for object files that 
is unique to the Mac.

FreeBSD64 uses ELF-64 which has already been done for Linux64.