[Buildroot] libffi or the crazy world of toolchain options

[Yann E. MORIN]

Thomas, All,

On Sunday 26 August 2012 22:40:50 Yann E. MORIN wrote:
> On Sunday 26 August 2012 12:23:46 Yann E. MORIN wrote:
> OK, now I have a shell+awk script (pkg-avail, attached) that:
>   - adds a BR2_PACKAGE_XXX_AVAILABLE symbol for all packages
>   - moves packages dependencies to that symbol
>   - adds a single dependency against that symbol to the corresponding
>     BR2_PACKAGE_XXX /main/ symbol

OK, this is iteration 3 of the script.

It now runs three pases:

1) - introduces a BR2_PACKAGE_XXX_AVAILABLE symbol
   - moves all the package dependencies to this symbol
   - has the package depends only on this symbol

2) - transforms all 'depends on BR2_PACKAGE_XXX' into a dependency
     on the corresponding _AVAILABLE symbol
   - adds a select on the corresponding package

3) - checks and fixes 'select BR2_PACKAGE_XXX' that does not have a
     corresponding 'depends on BR2_PACKAGE_XXX_AVAILABLE'

NOTE: the coverage of this script is NOT 100%. Some manual inspection
and fixes are still required.

Pass 1 treats all 817 packages. After a quick glance, all appears OK,
but a more thorough analysis must be conducted.

Pass 2 finds 67 packages that needs munging. There are a few packages
left over, becasue they ahve constructs like
    depends on PKG_FOO || PKG_BAR

Pass 3 finds 401 packages that 'select' packages without a corresponding
'depends on' on the _AVAILABLE symbol. A casual glance found that pass
to be pretty OK, although a complete analysis has not ben done so far.

Regards,
Yann E. MORIN.

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