Use ax_cxx_compile_stdcxx_0x.m4 to detect C++0x support.

base/i2-base.h

@@ -53,7 +53,7 @@
  */
 
 #ifdef _MSC_VER
-#	define HAVE_CXX11
+#	define HAVE_STDCXX_0X
 #	pragma warning(disable:4251)
 #	define _CRT_SECURE_NO_DEPRECATE
 #	define _CRT_SECURE_NO_WARNINGS
@@ -94,13 +94,13 @@
 using namespace std;
 using std::exception;
 
-#ifdef HAVE_CXX11
+#ifdef HAVE_STDCXX_0X
 #	include <memory>
 #	include <functional>
 
 using namespace std::placeholders;
 
-#else /* HAVE_CXX11 */
+#else /* HAVE_STDCXX_0X */
 #	ifdef HAVE_BOOST
 #		include <boost/smart_ptr.hpp>
 #		include <boost/make_shared.hpp>
@@ -118,7 +118,7 @@ using namespace std::tr1;
 using namespace std::tr1::placeholders;
 
 #endif /* HAVE_BOOST */
-#endif /* HAVE_CXX11 */
+#endif /* HAVE_STDCXX_0X */
 
 #if defined(__APPLE__) && defined(__MACH__)
 #	pragma GCC diagnostic ignored "-Wdeprecated-declarations" 

config/ax_cxx_compile_stdcxx_0x.m4

@@ -0,0 +1,113 @@
+# ============================================================================
+#  http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_0x.html
+# ============================================================================
+#
+# SYNOPSIS
+#
+#   AX_CXX_COMPILE_STDCXX_0X
+#
+# DESCRIPTION
+#
+#   Check for baseline language coverage in the compiler for the C++0x
+#   standard.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved. This file is offered as-is, without any
+#   warranty.
+
+#serial 7
+
+AU_ALIAS([AC_CXX_COMPILE_STDCXX_0X], [AX_CXX_COMPILE_STDCXX_0X])
+AC_DEFUN([AX_CXX_COMPILE_STDCXX_0X], [
+  AC_CACHE_CHECK(if g++ supports C++0x features without additional flags,
+  ax_cv_cxx_compile_cxx0x_native,
+  [AC_LANG_SAVE
+  AC_LANG_CPLUSPLUS
+  AC_TRY_COMPILE([
+  template <typename T>
+    struct check
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+    typedef check<check<bool>> right_angle_brackets;
+
+    int a;
+    decltype(a) b;
+
+    typedef check<int> check_type;
+    check_type c;
+    check_type&& cr = static_cast<check_type&&>(c);],,
+  ax_cv_cxx_compile_cxx0x_native=yes, ax_cv_cxx_compile_cxx0x_native=no)
+  AC_LANG_RESTORE
+  ])
+
+  AC_CACHE_CHECK(if g++ supports C++0x features with -std=c++0x,
+  ax_cv_cxx_compile_cxx0x_cxx,
+  [AC_LANG_SAVE
+  AC_LANG_CPLUSPLUS
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS="$CXXFLAGS -std=c++0x"
+  AC_TRY_COMPILE([
+  template <typename T>
+    struct check
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+    typedef check<check<bool>> right_angle_brackets;
+
+    int a;
+    decltype(a) b;
+
+    typedef check<int> check_type;
+    check_type c;
+    check_type&& cr = static_cast<check_type&&>(c);],,
+  ax_cv_cxx_compile_cxx0x_cxx=yes, ax_cv_cxx_compile_cxx0x_cxx=no)
+  CXXFLAGS="$ac_save_CXXFLAGS"
+  AC_LANG_RESTORE
+  ])
+
+  AC_CACHE_CHECK(if g++ supports C++0x features with -std=gnu++0x,
+  ax_cv_cxx_compile_cxx0x_gxx,
+  [AC_LANG_SAVE
+  AC_LANG_CPLUSPLUS
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS="$CXXFLAGS -std=gnu++0x"
+  AC_TRY_COMPILE([
+  template <typename T>
+    struct check
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+    typedef check<check<bool>> right_angle_brackets;
+
+    int a;
+    decltype(a) b;
+
+    typedef check<int> check_type;
+    check_type c;
+    check_type&& cr = static_cast<check_type&&>(c);],,
+  ax_cv_cxx_compile_cxx0x_gxx=yes, ax_cv_cxx_compile_cxx0x_gxx=no)
+  CXXFLAGS="$ac_save_CXXFLAGS"
+  AC_LANG_RESTORE
+  ])
+
+  if test "$ax_cv_cxx_compile_cxx0x_native" = yes ||
+     test "$ax_cv_cxx_compile_cxx0x_cxx" = yes ||
+     test "$ax_cv_cxx_compile_cxx0x_gxx" = yes; then
+    AC_DEFINE(HAVE_STDCXX_0X,,[Define if g++ supports C++0x features. ])
+  fi
+
+  if test "$ax_cv_cxx_compile_cxx0x_gxx" = yes; then
+    CXXFLAGS="$CXXFLAGS -std=gnu++0x"
+  elif test "$ax_cv_cxx_compile_cxx0x_cxx" = yes; then
+    CXXFLAGS="$CXXFLAGS -std=c++0x"
+  fi
+])

configure.ac

@@ -1,5 +1,21 @@
-dnl Process this file with autoconf to produce a configure script.
+/******************************************************************************
-dnl Created by Anjuta application wizard.
+ * Icinga 2                                                                   *
+ * Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/)        *
+ *                                                                            *
+ * This program is free software; you can redistribute it and/or              *
+ * modify it under the terms of the GNU General Public License                *
+ * as published by the Free Software Foundation; either version 2             *
+ * of the License, or (at your option) any later version.                     *
+ *                                                                            *
+ * This program is distributed in the hope that it will be useful,            *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of             *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
+ * GNU General Public License for more details.                               *
+ *                                                                            *
+ * You should have received a copy of the GNU General Public License          *
+ * along with this program; if not, write to the Free Software Foundation     *
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.             *
+ ******************************************************************************/
 
 AC_INIT([icinga], [2.0])
 AC_LANG(C++)
@@ -31,6 +47,7 @@ AC_PROG_INSTALL
 AC_PROG_CC
 AC_PROG_CXX
 AC_PROG_LIBTOOL
+AX_CXX_COMPILE_STDCXX_0X
 AX_CXX_GCC_ABI_DEMANGLE
 AX_PTHREAD
 
@@ -41,16 +58,10 @@ AC_CHECK_LIB(m, floor)
 AC_CHECK_LIB(pthread, pthread_create)
 AC_CHECK_LIB(socket, getsockname)
 
-AX_CHECK_COMPILE_FLAG([-std=c++0x], [have_cxx11_support=yes])
+AC_COMPILE_IFELSE(
-
+	[AC_LANG_PROGRAM([[#include <openssl/ssl.h>]], [])],
-if test "$have_cxx11_support" = "yes"; then
+	[],
-	CXXFLAGS="$CXXFLAGS -std=c++0x"
+	[AC_MSG_ERROR([You need the OpenSSL headers and libraries in order to build this application]) ])
-	AC_DEFINE(HAVE_CXX11, 1,
-		[define if the compiler supports C++11])
-fi
-
-
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <openssl/ssl.h>]], [])], [], [AC_MSG_ERROR([You need the OpenSSL headers and libraries in order to build this application]) ])
 
 
 AC_OUTPUT([