CFLAGS for the host in canadian cross build

[Matias Fonzo]

On Mon, 6 Nov 2017 11:51:34 -0800
Max Filippov <jcmvbkbc@gmail.com> wrote:

> On Mon, Nov 6, 2017 at 10:38 AM, Matias Fonzo <selk@dragora.org>
> wrote:
> > On Mon, 6 Nov 2017 10:30:14 -0800
> > Max Filippov <jcmvbkbc@gmail.com> wrote:
> [..]
> >>
> >> If CFLAGS/CXXFLAGS is the right place for the option, how can the
> >> build tell whether it's intended for the build or for the host?  
> >
> > GCC has $CFLAGS_FOR_BUILD and $CFLAGS_FOR_TARGET.  
> 
> Right, but as far as I can see CFLAGS_FOR_TARGET are not applied
> when a binary for the host is built. And CFLAGS_FOR_BUILD are applied
> when a binary for the build system is built. I don't see what I'd call
> CFLAGS_FOR_HOST.
> 

I am trying to find more information about HOST_CFLAGS ...