Re: Byteorder conditional compilation problems

[Linus Torvalds]

On Wed, Mar 6, 2013 at 8:43 AM, David Howells <dhowells@xxxxxxxxxx> wrote:
>
> Scripting a change from "defined(__XXX_ENDIAN)" to "(__XXX_ENDIAN==__BYTEORDER)"
> should be easy to script.

How about we just make the rule be that we shouldn't test __xyz_ENDIAN
at all, and instead always use CONFIG_xyz_ENDIAN, which isn't
ambiguous. And then have the exporter of the uapi header files just
sed-script that into __xyz_ENDIAN == __BYTEORDER.

The whole __xyz_ENDIAN == __BYTE_ORDER syntax is moronic, and the
standard under BSD seems to be single-underscore "_BYTE_ORDER", while
glibc uses double underscore __BYTE_ORDER. The whole thing is a
f*cking mess, and I really don't want to get the idiotic mess into the
kernel any more than I have to.

In fact, I'd prefer to let it just be. Changing it in the kernel to
the idiotic and non-standard user mode format is pointless. Just fix
up the (few) entries in the uapi header files.

                  Linus
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