eina-cxx: Added test for inheriting constructors in the C++11 compiler

This adds the inheriting constructor feature test to the m4 macros to
avoid compilation of the C++11 binding in constructors without this
features, where they would unavoidably fail compilation. This
eliminates GCC 4.7.x since inheriting constructors were available only
from GCC 4.8 and forward.

diff --git a/m4/efl_stdcxx_11.m4 b/m4/efl_stdcxx_11.m4
index cdd3934..f606bc0 100644 (file)
--- a/m4/efl_stdcxx_11.m4
+++ b/m4/efl_stdcxx_11.m4
@@ -51,6 +51,9 @@ m4_define([_EFL_CXX_COMPILE_STDCXX_11_testbody], [
     check_type c;
     check_type&& cr = static_cast<check_type&&>(c);
 
+    struct A { A(int); };
+    struct B : A { using A::A; };  // inheriting constructors
+
     auto d = a;
 ])