can build toolchain in two steps, but not one

Robert P. J. Day rpjday@mindspring.com
Fri Sep 9 15:47:00 GMT 2005


On Fri, 9 Sep 2005, Michael N. Moran wrote:

> Dan Kegel wrote:
> > Robert P. J. Day wrote:
> > >   what that tells me is that the perfectly valid SH3 options -mb
> > > and -m3 are unrecognized, which further suggests that the wrong
> > > compiler is being used since it doesn't recognize SH3-specific
> > > options.
> >
> >
> > Maybe the problem is that the kernel makefile is applying target
> > cflags when it shouldn't, for some reason.
>
> This is exactly what I recently found when compiling a 2.6.x kernel
> using GCC 4.0.1 for *ARM*. I had to change the arc/arm/Makefile to
> get rid of the obsolete flags.

a aide note:  if i'm building for SH3EB, i would think that i really
have to add "-mb -m3" to TARGET_CFLAGS, for obvious reasons.  however,
as a test last night (for reasons i can't explain), when it became
obvious that arch/sh/Makefile was cramming "-mb -m3" onto the compile
options, i removed those from TARGET_CFLAGS (something that i would
have thought would be a bad idea) and yet i still got what looked like
a good build.  go figure.

at least, that's what it *looked* like, but that's definitely not
behaviour i would want to count on under any circumstances.  so the
options went back and they're staying there.

rday

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