[OE-core] [poky] [PATCH] flex/bison: Don't hardcode M4 path

[Colin Walters]

On Tue, 2012-01-03 at 16:53 -0800, Saul Wold wrote:
> > The flex and bison configure scripts use AC_PATH_PROG to get a
> > full path to m4 and embed this in config.h (and then to the
> > generated binary), but this blows up when the m4 binary is in a
> > temporary staging directory.
> >
> > Since we are always shipping GNU m4, just set M4=m4 at configure
> > time so we don't use a hardcoded path.
> >
> > This is an equivalent to what already exists in autoconf.bb.
> >
> >
> This should really be posted to openembedded-core at lists.openembedded.org.

I CC'd, hopefully won't be rejected as I'm not yet a subscriber.

> Don't you loose the setting of BISON_PKGDATADIR in this case?  Does that 
> need to be poart of the EXTRA_OECONF?

Good catch - I'll double check, but I doubt it's necessary.  From the
bison source:

char const *
compute_pkgdatadir (void)
{
  char const *pkgdatadir = getenv ("BISON_PKGDATADIR");
  return pkgdatadir ? pkgdatadir : PKGDATADIR;
}

For us though PKGDATADIR should be enough I think.