On Mon, 2016-02-22 at 16:13 +1100, Sam Bobroff wrote:

It can currently be difficult to diagnose a build that fails due to
the compiler, linker or other parts of the toolchain being unable to
build binaries of the type required by the kernel config. For example
using a little endian toolchain to build a big endian kernel may
produce:

as: unrecognized option '-maltivec'

This patch adds a basic compile test and error message to
arch/powerpc/Makefile so that the above error becomes:

*** Sorry, your toolchain seems to be broken or incorrect. ***
Make sure it supports your kernel configuration (ppc64).

Signed-off-by: Sam Bobroff <redacted>
---

How is this more useful than getting to actually see the way in which the
toolchain (or the CFLAGS) is broken?

-Scott