[Buildroot] [PATCH v1 1/2] gnutls: needs C++ support

[Yann E. MORIN]

All,

On 2018-03-27 10:08 +0200, Thomas Petazzoni spake thusly:
> On Tue, 27 Mar 2018 09:54:56 +0200, Peter Korsgaard wrote:
> > It is a bit stupid that we have pull in C++ support here and in all the
> > reverse dependencies just because of a stupid configure check, but I
> > guess it is the simplest/best solution.
> > 
> > Should we then also revert bd39d11d2eaa679f (core/infra: fix build on
> > toolchain without C++)?
> > 
> > Yann, Thomas, Arnout - What do you say?
> 
> I just fired up a build to reproduce the issue and have a look. But
> from what I remember last time I had a look, it was just some
> completely brain-damaged autoconf sorcery, and there wasn't really any
> hope of fixing it.

Yeah, this is a libtool issue... libtool will call to AC_PROG_CXXCPP as
soon as CXX is set and is not 'no':

    https://git.savannah.gnu.org/cgit/libtool.git/tree/m4/libtool.m4#n6305

Currently, we're passing CXX=false when C++ is not enabled. Maybe we
whould pass 'no' instead? Lemme run a test...

Regards,
Yann E. MORIN.

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