Comments on pmake diffs for building on Linux

[Robert Watson]

On Mon, 3 Mar 2008, M. Warner Losh wrote:

> --- pmake.orig/config.h	2005-02-01 03:50:35.000000000 -0700
> +++ pmake/config.h	2008-03-03 22:24:16.745493000 -0700
> @@ -108,4 +108,27 @@
> # endif
> #endif
>
> +#ifndef TAILQ_HEAD_INITIALIZER
> +#define TAILQ_HEAD_INITIALIZER(head) { NULL, &(head).tqh_first }
> +#endif

In most ports of FreeBSD parts to Linux that I've seen, the preferred solution 
has to been to bring the entire FreeBSD queue.h with you rather than relying 
on the native Linux queue.h.  This is what we do for OpenBSM, for example; 
this also helps out when you get to Mac OS X, Solaris, etc, where all the 
queue.h's continue to vary in subtle ways.  This depends a fair amount on a 
lack of header pollution in the OS's own include files, of course...

Robert N M Watson
Computer Laboratory
University of Cambridge