[PATCH] Enable building GDB without installed libtermcap

[Eli Zaretskii]

> Date: Thu, 26 Feb 2015 17:48:06 +0000
> From: Pedro Alves <palves@redhat.com>
> CC: GDB Patches <gdb-patches@sourceware.org>, Doug Evans <dje@google.com>,        Mike Frysinger <vapier@gentoo.org>
> 
> My idea to work around that is to simply use __attribute__((weak)).
> Of all supported hosts
> (https://sourceware.org/gdb/wiki/Systems#Supported_Hosts),
> Windows/PE/COFF would be the one that I'd be worried about WRT use of
> weak, but the limited weak support in PE/COFF seems to work here.  A
> cross build using x86_64-w64-mingw32 on Fedora 20 builds fine with
> this.

With what version of GCC?  Quick testing indicates that 4.8.1 supports
that, but 3.4.2 doesn't.

Which version of GCC is the minimal one we want to support?

Or how about making this conditional on C++?