GCC-7: disable pre-C++17 warning

This warning is only relevant when object files compile with and without
C++17 language level are to be linked into a single executable; starting
with C++17, new style 'noexcept' specifications will become part of the
function signature and thus part of the mangled function name. Linkiing
mixed object files might fail in such a situation.

Obviously this warning is not relevant for us; moreover we plan to
upgrade to C++17 soon

admin/scons/Setup.py

@@ -74,7 +74,7 @@ def defineBuildEnvironment():
     env.Replace( CPPPATH   =["#src"]    # used to find includes, "#" means always absolute to build-root
                , CPPDEFINES=['LUMIERA_VERSION='+VERSION ]    # note: it's a list to append further defines
                , CCFLAGS='-Wall -Wextra -Wformat-security'
-               , CXXFLAGS='-std=gnu++14 -Wno-enum-compare'
+               , CXXFLAGS='-std=gnu++14 -Wno-enum-compare -Wno-noexcept-type'
                , CFLAGS='-std=gnu99' 
                )
     env.Append(LINKFLAGS='-Wl,--no-undefined')  # require every dependency is given on link, in the right order