How to port something requiring different versions depending on OSVERSION?

[Wesley Shields]

On Sun, Apr 25, 2010 at 04:51:04PM -0700, Darren Pilgrim wrote:
> I maintain the sysutils/3dm port.  The port installs a binary-only 
> package provided by 3ware (now LSI).  The binary provided is a 5.4-R, 
> static-linked binary which requires KSE.  Because it's static-linked, 
> there is no legacy KSE support workaround.
> 
> Yes, LSI is aware of the problem.
> No, they haven't fixed it yet (they don't officially support 8.0).
> No, I can't get source.
> Yes, the port is currently marked BROKEN for RELENG_8 and later.
> 
> Here's my dilemna:
> 
> If I install the latest version of 3dm2, the port won't run on RELENG_8 
> and later.  If I install v2.01.09.004 (the last version that doesn't 
> require KSE), the port will run on all versions of FreeBSD but lack 
> proper support for current-model cards--the 9690 and 9750 series.
> 
> Option 1:
> 
> Detect the OS version, install the latest version if running <8.x and 
> install 2.01.09.004 if >=8.x.  I can't find anything in the Porter's 
> Handbook that explicitly says NOT to do this.  Wesley Shields (wxs) says 
> this "seems like a bad idea" without further qualification.  The only 
> thing I could think of is the automated ports QA and packaging; however, 
> those are moot because LSI requires pre-download agreement to a license 
> which prohibits redistribution.

That does eliminate a lot of my concern. I didn't really have a
hard-line stance on this. It just struck me as the kind of thing you
want would to do as a last resort only.

Is there any way that libmap.conf can help here?

-- WXS