[Buildroot] [PATCH 3 of 4 RFC] manual: add section about depending on toolchain options

[Thomas Petazzoni]

Dear Gustavo Zacarias,

On Wed, 18 Sep 2013 15:05:23 -0300, Gustavo Zacarias wrote:
> On 09/18/2013 02:59 PM, Thomas Petazzoni wrote:
> 
> > I think it's a bit more than just renaming this symbol. I can try to
> > cook something.
> 
> Add the relevant legacy entry, adjusting help / manuals.
> Is there something else i'm missing?

Yes, we probably want to have the choice between building static only,
static + shared, or shared only, default to shared only. Currently,
when !BR2_PREFER_STATIC_LIB, we build both the shared and static
variants, which takes time because it requires building everything
twice, once with -fPIC, once without.

Also, the availability of the shared options should depend on whether
the architecture actually supports shared libraries, as Thomas
suggested.

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com