Require C++11

Kjell Ahlstedt · Kjell Ahlstedt · commit 2f0ecc3d5db8 · 2015-07-19T14:43:57.000+02:00
* configure.ac: Use MM_AX_CXX_COMPILE_STDCXX_11 from mm-common to check for
compiler support for C++11 and use it (-std=c++11 for current versions of g++).
Among other reasons, this is because libsigc++ and glibmm now require C++11,
and gmmproc generates C++11 code.
diff --git a/configure.ac b/configure.ac
@@ -13,7 +13,7 @@ m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES])
 AM_MAINTAINER_MODE([disable])
 AC_ARG_VAR([ACLOCAL_FLAGS], [aclocal flags, e.g. -I <macro dir>])
 
-MM_PREREQ([0.9.7])
+MM_PREREQ([0.9.8])
 MM_INIT_MODULE([libxml++-2.6])
 
 # Copy the mm-common .pl scripts into docs/,
@@ -25,6 +25,8 @@ MM_CONFIG_DOCTOOL_DIR([docs])
 AC_SUBST([LIBXMLXX_SO_VERSION], [2:7:0])
 
 AC_PROG_CXX
+MM_AX_CXX_COMPILE_STDCXX_11([noext],[mandatory])
+
 LT_PREREQ([2.2.6])
 LT_INIT([dlopen win32-dll disable-static])
 
