[Buildroot] add option to enable AI_ADDRCONFIG support

[Peter Korsgaard <jacmet@uclibc.org>]

>>>>> "Thomas" == Thomas Petazzoni <thomas.petazzoni@free-electrons.com> writes:

Hi,

 >> I believe it's a fairly small impact, but the problem is external uClibc
 >> toolchains (made by BR, ct-NG or elsewhere) which most likely won't have
 >> AI_ADDRCONFIG enabled, so mrouted (and gupnp) will fail at build time.

 Thomas> Is it common to have AI_ADDRCONFIG disabled in external toolchains?
 Thomas> Notice that we have a similar problem with ltp-testsuite at the moment.

Hard to say, but the config option defaults to 'n' in uClibc - So
chances are that it is.

 Thomas> Do we really want to add one more toolchain option just for
 Thomas> this small feature? Sounds like a big hammer, no?

True, but it is the safest approach. I don't feel strongly about it
though - Anybody?

-- 
Bye, Peter Korsgaard