Re: problem w/ libm on vax

["Michael L. Hitch" <mhitch%lightning.msu.montana.edu@localhost>]

On Wed, 19 Mar 2008, Kurt Schreiner wrote:

> On Tue, Mar 18, 2008 at 06:29:32PM +0100, Matthias Drochner wrote:
> > ks%ub.uni-mainz.de@localhost said:
> > > /u/NetBSD/arch/vax/dest/lib/libm.so: undefined reference to `_hypotf'
> > > [...]
> >
> > This is likely related to sone namespace protection I added
> > a while ago, for functions which are used internally within
> > libm.
> > Could you please add something like
> >
> > #include "../src/namespace.h"
> > and
> > #ifdef __weak_alias
> > __weak_alias(hypotf, _hypotf)
> > #endif
> >
> > to the relevant functions in noieee_src?

  It takes a little bit more than this.  The float versions of these 
functions did not exist for noieee_src and vax.  In addition, two of
the functions are implemented in assembly for the vax.

> No idea if this "solution" has something to do with "The Right
> Thing To Do" ;-)

  Definitely not the right way - at the least, the manual pages and 
include file will not get installed, and the build will fail.  This would 
require making a bunch of machine-dependant changes in the set lists.
A simple workaround would be to only include the source files for non-vax
in the lib/libm/complex/Makefile.inc.

  The right solution is to provide the missing float functions and do the
appropriate namespace/weak_alias stuff.  Also, two of the functions are
actually in lib/libm/arch/vax (the versions in noieee_src aren't used).

  I've made these changes and just committed them, so the vax tree should 
build correctly now.

--
Michael L. Hitch                        mhitch%montana.edu@localhost
Computer Consultant
Information Technology Center
Montana State University        Bozeman, MT     USA