[FFmpeg-devel] [PATCH] configure: Do not abort when cross-compiling to the native CPU

[David Michael]

On Mon, Mar 30, 2020 at 1:00 PM Derek Buitenhuis
<derek.buitenhuis at gmail.com> wrote:
> On 07/03/2020 15:32, David Michael wrote:
> > Using a compiler with a different host triplet is considered
> > cross-compiling, even when it is for the same architecture as the
> > build system.  With such a cross-compiler, it is still valid to
> > optimize builds with --cpu=host.  Drop the condition that aborts in
> > this case, since a cross-compiler for an incompatible architecture
> > will fail with -mtune=native anyway.
>
> Is there a reason you would set the cross-prefix instead of just the --cc, etc.
> when compiling natively?

I want everything to use the cross-prefixed versions since those tools
are configured to build software in a sysroot using a different set of
compiler features than software in the minimal build root.  I am using
the same process as when cross-compiling OS images for other
incompatible architectures; configuring tuning for the build system's
CPU is just another valid use of this setup.

Thanks.

David