svn commit: r266553 - head/release/scripts

[Warner Losh]

On May 28, 2014, at 9:28 AM, Konstantin Belousov <kostikbel at gmail.com> wrote:

> On Wed, May 28, 2014 at 08:26:58AM -0600, Warner Losh wrote:
>> 
>> Then we disagree on this point. However, the disagreement here is
>> kinda foundational: to build a set of libraries or sys root, you have
>> to have a MACHINE_ARCH to make it work. Even in our current system, we
>> set MACHINE_ARCH to i386 or powerpc when building the 32-bit binaries
>> (note: we don?t do this for mips). This means that if we do grow x32
>> support, we?ll need to grow a MACHINE_ARCH for it. That?s my point:
>> all ABIs have MACHINE_ARCH associated with them, and those are the
>> names users are used to specifying, and are the ones that are the most
>> natural for script writers to use. With nathan?s patches, we?re to the
>> point where those are used, though there?s also the option of using
>> the non-standard names if you want (e.g. amd64:32 instead of x32).
>> 
> 
> I am not sure if this comment would add anything to the discussion,
> but other build systems do not require MACHINE_ARCH.  In our terms,
> other build systems are happy to build:
> i386 binary when MACHINE is amd64 and CFLAGS contains -m32;
> x32 binary when MACHINE is amd64 and CFLAGS contains -mx32.
> 
> For HEAD and stable/10 we finally reached the point where -m32 works,
> on amd64; it worked on powerpc64 from inception, AFAIU Nathan. At least
> this is true for dependencies limited to the base system, and not to the
> ports (the later is since ports do not know about multiarch).
> 
> It is limitation of our build that we require MACHINE_ARCH to build
> other natively supported ABI binary on the host. Ideally, the hacks that
> treat lib32 build as the cross-compilation would go away eventually.

I doubt it. The MACHINE_ARCH is used to select which files to build.

Warner
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