Re: gcc version selection

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Fri, Oct 03, 2014 at 12:34:20PM +0100, Jonathan Perkin wrote:
> * On 2014-10-03 at 12:14 BST, Patrick Welche wrote:
> 
> > I'm still confused by gcc version selection - how is it meant to work?
> > 
> > On NetBSD 5/i386 (i.e., a system with gcc 4.1.3):
> > 
> > # cd /usr/pkgsrc/graphics/openexr
> > # make show-var VARNAME=GCC_REQD
> > 4.3 2.8.0
> > # make show-depends
> > {gcc49,gcc49-libs}>=4.9:../../lang/gcc49-libs
> > ilmbase>=2.2.0nb1:../../graphics/ilmbase
> > #
> > 
> > So, how did we get from 4.3 to 4.9?
> 
> Likely because pkgsrc has no GCC 4.3, and the current logic is that if
> none of the patterns match we use the latest, i.e. 4.9.

Actually, as rules go, that doesn't seem like a bad one. The only problem
is that -current has 4.8, so I saw trouble in ImageMagick that doesn't seem
to be happy being compiled with 4.9 (still to be looked at)

> Yes, we should probably fix this.

1) teach mk/compiler/gcc.mk to use 4.4 for 4.3?
2) change GCC_REQD in Makefiles from 4.3 to 4.4?
3) something else?

FWIW, I just changed openexr/Makefile, and:

# make show-var VARNAME=GCC_REQD
4.4 2.8.0
# make show-depends
ilmbase>=2.2.0nb1:../../graphics/ilmbase
gcc44>=4.4.5nb2:../../lang/gcc44

Cheers,

Patrick