tree 99d19fba1cb98bf7e057817e7942d87cd590ab45
parent 6dd56fafe2d6d55c8804a27de3b52fb53a4c98b0
author Gert Wollny <gw.fossdev@gmail.com> 1508339125 +0200
committer Emil Velikov <emil.l.velikov@gmail.com> 1510157014 +0000

configure: check for -std=c++11 support and enable st/mesa test accordingly

Add a check that tests whether the c++ compiler supports c++11, either
by default, by adding the compiler flag -std=c++11, or by adding a
compiler flag that the user has specified via the environment variable
CXX11_CXXFLAGS.

The test only does a very shallow check of c++11 support, i.e. it tests
whether the define  __cplusplus >= 201103L to confirm language support
by the compiler, and it checks whether the header <tuple> is available
to test the availability of the c++11 standard library.

A make file conditional HAVE_STD_CXX11 is provided that is used in this
patch to enable the test in st/mesa if C++11 support is available.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102665
Acked-by: Emil Velikov <emil.velikov@collabora.com>