Some baseline thoughts

[Stephan Bergmann]

On 06/15/2017 03:34 PM, Stephan Bergmann wrote:
> On 03/29/2017 07:09 PM, Christian Lohmaier wrote:
>> On Thu, Mar 16, 2017 at 12:20 PM, Stephan Bergmann 
>> <sbergman at redhat.com> wrote:
>>> Some of our baselines on current master (towards LO 5.4) are as follows:
>>> ** GCC 4.8.1:
>>> *** inheriting constructors
>>> *** ref-qualifiers
>>
>> FYI: baseline CentOS with devtoolset has 4.8.2
> 
> Is anybody actually still using GCC 4.7 on master (towards LO 6.0, by now)?
> 
> Just tried to build recent master against some GCC 4.7.4 (on F25, using 
> system's libstdc++ 6.3 at runtime), and that doesn't work well, causing 
> spurious -Wsign-compare warnings, spurious errors about allegedly 
> implicitly noexcept(false) dtors of std::exception derivations, and 
> failure to compile usage of thread_local in 
> comphelper/source/misc/threadpool.cxx (where support for thread-local 
> storage was only "partial" in GCC < 4.8, according to 
> <http://en.cppreference.com/w/cpp/compiler_support>).  So I wonder if 
> anybody still manages to build with anything less than GCC 4.8?
> 
> (LHM's tb56 appears to be using GCC 4.8 by now, and that used to be one 
> with a notoriously old compiler.)
> 
> If there's no objections, I'd bump current master towards LO 6.0 to GCC 
> 4.8.

(4.8.1 even, so we'll have ref-qualifiers known-working everywhere and 
can drop HAVE_CXX11_REF_QUALIFIER.)