daemon: explicitly set strict c++11 compliance

This allows to use compilers that do not fully implement the extended set.

Refs: #46066

Change-Id: Ia8d2eb212c0f5e0a4f5d0e04d27a8224a917fe96

daemon/configure.ac

@@ -36,7 +36,7 @@ dnl Define C++ as default language
 AC_LANG(C++)
 
 dnl Check for C++11 support
-AX_CXX_COMPILE_STDCXX_11(,[mandatory])
+AX_CXX_COMPILE_STDCXX_11([noext],[mandatory])
 
 dnl Check for header files
 AC_FUNC_ALLOCA