Don't test for old compilers in C++11 mode in configure

This makes configure faster when C++11 is enabled by avoiding spending time on
compiling unnecessary checks in this case.

configure

@@ -4602,10 +4602,10 @@ fi
 
           eval "$wx_cv_use_liblzma"
 
-
 fi
 
 
+
 # Check whether --with-libxpm was given.
 if test "${with_libxpm+set}" = set; then :
   withval=$with_libxpm;
@@ -17801,6 +17801,118 @@ if test $ac_cv_c_bigendian = yes; then
 fi
 
 
+if test "x$SUNCXX" = xyes; then
+    CXXFLAGS="-features=tmplife $GNU_SOURCE_FLAG $CXXFLAGS"
+fi
+
+if test "x$SUNCC" = xyes; then
+    CFLAGS="-erroff=E_NO_EXPLICIT_TYPE_GIVEN $CFLAGS"
+fi
+
+if test "x$SGICC" = "xyes"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking if cc version is 7.4.4 or greater" >&5
+$as_echo_n "checking if cc version is 7.4.4 or greater... " >&6; }
+if ${wx_cv_prog_sgicc744+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+            cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+                    #if _SGI_COMPILER_VERSION >= 744
+                    chock me: mipsPro is 7.4.4 or later
+                    #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  wx_cv_prog_sgicc744=no
+else
+  wx_cv_prog_sgicc744=yes
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $wx_cv_prog_sgicc744" >&5
+$as_echo "$wx_cv_prog_sgicc744" >&6; }
+
+    if test "x$wx_cv_prog_sgicc744" = "xyes"; then
+        CFLAGS="-woff 3970 $CFLAGS"
+    fi
+fi
+if test "x$SGICXX" = "xyes"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking if CC version is 7.4.4 or greater" >&5
+$as_echo_n "checking if CC version is 7.4.4 or greater... " >&6; }
+if ${wx_cv_prog_sgicxx744+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+            ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+            cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+                    #if _SGI_COMPILER_VERSION >= 744
+                    chock me: mipsPro is 7.4.4 or later
+                    #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+  wx_cv_prog_sgicxx744=no
+else
+  wx_cv_prog_sgicxx744=yes
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+            ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $wx_cv_prog_sgicxx744" >&5
+$as_echo "$wx_cv_prog_sgicxx744" >&6; }
+
+    if test "x$wx_cv_prog_sgicxx744" = "xyes"; then
+        CXXFLAGS="-woff 3970 $CXXFLAGS"
+    fi
+fi
+
+if test "x$HPCC" = "xyes"; then
+                    CFLAGS="+W 2011,2450 $CFLAGS"
+fi
+if test "x$HPCXX" = "xyes"; then
+                            CXXFLAGS="+W 2340,4232 $CXXFLAGS"
+fi
+
+if test "x$COMPAQCXX" = "xyes"; then
+                                CXXFLAGS="-w0 -msg_disable basclsnondto,unrimpret,intconlosbit"
+fi
+
+if test "$HAVE_CXX11" != "1" ; then
+
 
 
     ac_ext=cpp
@@ -17919,116 +18031,6 @@ $as_echo "$wx_cv_explicit" >&6; }
   fi
 
 
-if test "x$SUNCXX" = xyes; then
-    CXXFLAGS="-features=tmplife $GNU_SOURCE_FLAG $CXXFLAGS"
-fi
-
-if test "x$SUNCC" = xyes; then
-    CFLAGS="-erroff=E_NO_EXPLICIT_TYPE_GIVEN $CFLAGS"
-fi
-
-if test "x$SGICC" = "xyes"; then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking if cc version is 7.4.4 or greater" >&5
-$as_echo_n "checking if cc version is 7.4.4 or greater... " >&6; }
-if ${wx_cv_prog_sgicc744+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-            cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-                    #if _SGI_COMPILER_VERSION >= 744
-                    chock me: mipsPro is 7.4.4 or later
-                    #endif
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  wx_cv_prog_sgicc744=no
-else
-  wx_cv_prog_sgicc744=yes
-
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $wx_cv_prog_sgicc744" >&5
-$as_echo "$wx_cv_prog_sgicc744" >&6; }
-
-    if test "x$wx_cv_prog_sgicc744" = "xyes"; then
-        CFLAGS="-woff 3970 $CFLAGS"
-    fi
-fi
-if test "x$SGICXX" = "xyes"; then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking if CC version is 7.4.4 or greater" >&5
-$as_echo_n "checking if CC version is 7.4.4 or greater... " >&6; }
-if ${wx_cv_prog_sgicxx744+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-            ac_ext=cpp
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-            cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-                    #if _SGI_COMPILER_VERSION >= 744
-                    chock me: mipsPro is 7.4.4 or later
-                    #endif
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_cxx_try_compile "$LINENO"; then :
-  wx_cv_prog_sgicxx744=no
-else
-  wx_cv_prog_sgicxx744=yes
-
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-            ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $wx_cv_prog_sgicxx744" >&5
-$as_echo "$wx_cv_prog_sgicxx744" >&6; }
-
-    if test "x$wx_cv_prog_sgicxx744" = "xyes"; then
-        CXXFLAGS="-woff 3970 $CXXFLAGS"
-    fi
-fi
-
-if test "x$HPCC" = "xyes"; then
-                    CFLAGS="+W 2011,2450 $CFLAGS"
-fi
-if test "x$HPCXX" = "xyes"; then
-                            CXXFLAGS="+W 2340,4232 $CXXFLAGS"
-fi
-
-if test "x$COMPAQCXX" = "xyes"; then
-                                CXXFLAGS="-w0 -msg_disable basclsnondto,unrimpret,intconlosbit"
-fi
-
 ac_ext=cpp
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -18436,8 +18438,7 @@ fi
     fi
 fi
 
-if test "$HAVE_CXX11" != "1" ; then
+for ac_header in type_traits tr1/type_traits
-    for ac_header in type_traits tr1/type_traits
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_cxx_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
@@ -18451,13 +18452,10 @@ fi
 
 done
 
-else
-    $as_echo "#define HAVE_TYPE_TRAITS 1" >>confdefs.h
 
 fi
 
 
-
   if test -n "$GCC"; then
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for __sync_fetch_and_add and __sync_sub_and_fetch builtins" >&5
 $as_echo_n "checking for __sync_fetch_and_add and __sync_sub_and_fetch builtins... " >&6; }
@@ -18836,6 +18834,8 @@ $as_echo "no" >&6; }
     fi
 fi
 
+if test "$HAVE_CXX11" != "1" ; then
+
 ac_ext=cpp
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -18964,6 +18964,7 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
+fi
 
 
 if test "$wxUSE_REGEX" != "no"; then

configure.in

@@ -1669,12 +1669,6 @@ fi
 dnl check for bytesex stuff (don't use AC_C_BIGENDIAN to allow cross-compiling)
 WX_C_BIGENDIAN
 
-dnl check for iostream (as opposed to iostream.h) standard header
-WX_CPP_NEW_HEADERS(, AC_DEFINE(wxUSE_IOSTREAMH))
-
-dnl check whether C++ compiler supports explicit keyword
-WX_CPP_EXPLICIT
-
 dnl With Sun CC, temporaries have block scope by default. This flag is needed
 dnl to get the expression scope behaviour that conforms to the standard.
 if test "x$SUNCXX" = xyes; then
@@ -1772,6 +1766,16 @@ if test "x$COMPAQCXX" = "xyes"; then
     CXXFLAGS="-w0 -msg_disable basclsnondto,unrimpret,intconlosbit"
 fi
 
+dnl The checks below are for ancient compilers and are unnecessary when using
+dnl C++11.
+if test "$HAVE_CXX11" != "1" ; then
+
+dnl check for iostream (as opposed to iostream.h) standard header
+WX_CPP_NEW_HEADERS(, AC_DEFINE(wxUSE_IOSTREAMH))
+
+dnl check whether C++ compiler supports explicit keyword
+WX_CPP_EXPLICIT
+
 dnl the next few tests are all for C++ features and so need to be done using
 dnl C++ compiler
 AC_LANG_PUSH(C++)
@@ -1985,18 +1989,9 @@ if test "$wxUSE_STL" = "yes"; then
     fi
 fi
 
-dnl Check for type_traits header if necessary: we know that it's always present
+AC_CHECK_HEADERS([type_traits tr1/type_traits], break, [], [AC_INCLUDES_DEFAULT()])
-dnl in C++11 mode. Also notice that it's important to pass AC_INCLUDES_DEFAULT()
+
-dnl as the last argument because otherwise autoconf would perform the check
+fi dnl End of pre-C++11 only checks section
-dnl using both the compiler and the preprocessor and the latter could fail if
-dnl the preprocessor is not in C++11 mode, resulting in a warning when running
-dnl configure, while providing this argument allows to skip the preprocessor
-dnl check.
-if test "$HAVE_CXX11" != "1" ; then
-    AC_CHECK_HEADERS([type_traits tr1/type_traits], break, [], [AC_INCLUDES_DEFAULT()])
-else
-    AC_DEFINE(HAVE_TYPE_TRAITS)
-fi
 
 dnl check for atomic operations builtins for wx/atomic.h:
 WX_ATOMIC_BUILTINS
@@ -2227,6 +2222,8 @@ else
     fi
 fi
 
+if test "$HAVE_CXX11" != "1" ; then
+
 dnl check for C99 string to long long conversion functions, assume that if we
 dnl have the unsigned variants, then we have the signed ones as well
 dnl
@@ -2240,6 +2237,8 @@ else
 fi
 AC_LANG_POP()
 
+fi dnl End of pre-C++11 only checks section
+
 dnl ---------------------------------------------------------------------------
 dnl Optional libraries
 dnl

include/wx/defs.h

@@ -340,7 +340,9 @@ typedef short int WXTYPE;
 #define wxConstCast(obj, className) wx_const_cast(className *, obj)
 
 #ifndef HAVE_STD_WSTRING
-    #if defined(__VISUALC__)
+    #if __cplusplus >= 201103L
+        #define HAVE_STD_WSTRING
+    #elif defined(__VISUALC__)
         #define HAVE_STD_WSTRING
     #elif defined(__MINGW32__)
         #define HAVE_STD_WSTRING
@@ -348,7 +350,9 @@ typedef short int WXTYPE;
 #endif
 
 #ifndef HAVE_STD_STRING_COMPARE
-    #if defined(__VISUALC__)
+    #if __cplusplus >= 201103L
+        #define HAVE_STD_STRING_COMPARE
+    #elif defined(__VISUALC__)
         #define HAVE_STD_STRING_COMPARE
     #elif defined(__MINGW32__) || defined(__CYGWIN32__)
         #define HAVE_STD_STRING_COMPARE

include/wx/wxcrtbase.h

@@ -183,6 +183,16 @@ extern unsigned long android_wcstoul(const wchar_t *nptr, wchar_t **endptr, int
     #define wxCRT_StrtollW   _wcstoi64
     #define wxCRT_StrtoullW  _wcstoui64
 #else
+    /* Both of these functions are implemented in C++11 compilers */
+    #if defined(__cplusplus) && __cplusplus >= 201103L
+        #ifndef HAVE_STRTOULL
+            #define HAVE_STRTOULL
+        #endif
+        #ifndef HAVE_WCSTOULL
+            #define HAVE_WCSTOULL
+        #endif
+    #endif
+
     #ifdef HAVE_STRTOULL
         #define wxCRT_StrtollA   strtoll
         #define wxCRT_StrtoullA  strtoull