Re: Detecting hard float/version in pkgsrc

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Sun, Jul 24, 2016 at 12:48:47PM +0000, coypu%SDF.ORG@localhost wrote:
> A good number of packages seem to default a worse case of hard float as
> opposed to checking.
> 
> e.g.:
> - lang/go/version.mk, assumes VFPv1 (GOARM=6 default). it could use VFPv3
> for newer hardware, and it would probably not work for softfloat.
> 
> they will likely transition to GOARM=7 default at some point, and in the
> absence of detection, it might be broken for older hardware.
> 
> - x11/pixman/Makefile is an example of all i386 being penalized for most
> machines not having SSE2.
> 
> Others example of hacks exist, e.g. -mstackrealign for Firefox on i386,
> but it is probably only needed for non-SSE2 machines. Or ffmpeg.
> 
> It might be nicer to have fancier float checks than just using
> MACHINE_ARCH and assuming the worst case scenario when such hacks are
> needed.
> 
> Opinions?

You seems to assume you'll be running the packages on the machine which
built them. For me it's almost never the case (either because I'm
using prebuilt packages, or because I have a dedicated build machine).

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--