On Sat, Apr 15, 2017 at 11:40:10AM +0900, Masahiro Yamada wrote:
> Hi Tom,
> 
> 2017-04-15 8:47 GMT+09:00 Tom Rini <tr...@konsulko.com>:
> > There are more and more cases where if we do not use gcc-6.0 or later we
> > run into problems where our binaries are too large for the targets.
> > Given the prevalence of gcc-6.0 or later toolchains at this point in
> > time, we give notice now that starting with v2018.01 we will require
> > gcc-6 (or later) for ARM.
> >
> > Signed-off-by: Tom Rini <tr...@konsulko.com>
> > ---
> >  arch/arm/config.mk | 9 ++++++++-
> >  1 file changed, 8 insertions(+), 1 deletion(-)
> >
> > diff --git a/arch/arm/config.mk b/arch/arm/config.mk
> > index 907c69371b94..9d305e1f4448 100644
> > --- a/arch/arm/config.mk
> > +++ b/arch/arm/config.mk
> > @@ -45,7 +45,14 @@ endif
> >
> >  # Only test once
> >  ifeq ($(CONFIG_$(SPL_)SYS_THUMB_BUILD),y)
> > -archprepare: checkthumb
> > +archprepare: checkthumb checkgcc6
> > +
> > +checkgcc6:
> > +       @if test "$(call cc-name)" = "gcc" -a \
> > +                       "$(call cc-version)" -lt "0600"; then \
> > +               echo -n '*** Your GCC is older than 6.0 and will not be '; \
> > +               echo 'supported starting with v2018.01.'; \
> > +       fi
> >
> >  checkthumb:
> >         @if test "$(call cc-name)" = "gcc" -a \
> > --
> 
> I am confused.
> 
> Is this requirement only for thumb, or for all ARM?

All ARM.  So, when this moves from a warning to a fail, checkthumb
should go away at that time.

> Looking at the code,
> the check is wrapped with ifeq CONFIG_SYS_THUMB_BUILD.

Oops, I too quickly copied the checkthumb example.  I'll do a v2 after
giving others a chance to comment.  Thanks!

-- 
Tom

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