Re: [PATCH 1 of 2] cross-gdb: add XML support

["Yann E. MORIN" <yann dot morin dot 1998 at anciens dot enib dot fr>]

Bryan, Benoit, All,

On Wednesday 25 May 2011 22:25:58 Bryan Hundven wrote:
> I have other uses for 'has_or_warn' and setting
> $some-external-lib_available as well.
> For instance the problem that ANDY had with fedora packaging only
> shared with -devel packages, and needing to install a seperate -static
> package in the distribution would allow being able to toggle the
> availability of building a static toolchain (i.e. if libncurses5.a is
> not availble, don't allow static toolchains, but also warn during
> ./configure time.)

The first step is to warn at ./configure time. Propagating the result
down to kconfig can come later.

We have to be very carefull as to how we do it. We do not want to create
a complex infrastructure for passing such options. Also, we do not want
to add too many such options, or it would become a nightmare to maintain.

Really, I would stay on the safe side and require a bit of knowledge from
the end user to properly setup his/her host.

After all, one should not consider building a toolchain a trivial task;
it really requires some thought before-hand. That we ease the toolchain
build in itself is good; that we abstract all the requirements is bad.

We should only provide safeguards to detect errors, such as this libexpat
stuff, and not forbid doing stupid things, such as asking for a staticaly
linked toolchain when static libs are not installed.

> I can provide the 'has_or_warn' code and an example with libncurses5.a
> if you want, but you or BenoÃt should be able to implement
> 'has_or_warn' as well ;)

It's not as if has_or_warn was very complex to come up with! ;-)
I'll push a version a bit later.

Then you can build upon this to add your stuff.

Regards,
Yann E. MORIN.

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