[Buildroot] luajit package fails to build on x86_64 for x86

[Yann E. MORIN <yann.morin.1998@free.fr>]

Fabio, All,

On 2014-03-07 10:59 +0100, Fabio Porcedda spake thusly:
> On Thu, Mar 6, 2014 at 10:31 PM, Yann E. MORIN <yann.morin.1998@free.fr> wrote:
> > On 2014-03-06 11:43 +0100, Fabio Porcedda spake thusly:
> >> Hi all,
> >> luajit fails to build on a Ubuntu 13.10 x86_64 with the following defconfig:
> >>
> >> BR2_x86_generic=y
> >> BR2_TOOLCHAIN_EXTERNAL=y
> >> BR2_PACKAGE_LUAJIT=y
[--SNIP--]
> > And this can not work on a pure 64-bit system (aka, without the 32-bit
> > legacy stuff).
[--SNIP--]
> > Not sure how we can get away with this...
> 
> I think we have two choices:
>  - add a check to test if 32bit compiler is installed and if not print
> a clear message about the toolchain requirement

I think this would be the first package to add such a check.

How would you propose we implement this:
  - in a pre-configure hook (but that will catch the failure late in the
    build) ?
  - in a make ifeq-block (so we can catch it early in the build) ?

The second solution is more appealing to me, but might be a bit more
complex to implement.

>  - add (BR2_i386 && BR2_HOSTARCH='i386') to the config.in to exlude
> such combination.

But that would prevent the combination on systems that are setup with
support for building 32-bit programs, which is a pity...

Regards,
Yann E. MORIN.

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