diff --git a/contrib/toolchain/gcc/5x/libstdc++-v3/Makefile b/contrib/toolchain/gcc/5x/libstdc++-v3/Makefile
index e25ece93c7..6ac55dbf71 100644
--- a/contrib/toolchain/gcc/5x/libstdc++-v3/Makefile
+++ b/contrib/toolchain/gcc/5x/libstdc++-v3/Makefile
@@ -35,13 +35,13 @@ cxx98_sources = \
 	src/c++98/compatibility-debug_list-2.cc
 
 cxx11_sources = \
-	compatibility-c++0x.cc \
-	compatibility-atomic-c++0x.cc \
-	compatibility-thread-c++0x.cc \
-	compatibility-chrono.cc \
-	compatibility-condvar.cc
+	src/c++11/compatibility-c++0x.cc \
+	src/c++11/compatibility-atomic-c++0x.cc \
+	src/c++11/compatibility-thread-c++0x.cc \
+	src/c++11/compatibility-chrono.cc \
+	src/c++11/compatibility-condvar.cc
  
-compat_sources = $(cxx98_sources)
+compat_sources = $(cxx98_sources) $(cxx11_sources)
 
 cow_string_host_sources = \
 	src/c++98/collate_members_cow.cc \
@@ -244,7 +244,19 @@ src/c++98/parallel_settings.o: src/c++98/parallel_settings.cc
 
 
 src/c++11/hashtable_c++0x.o: src/c++11/hashtable_c++0x.cc
-	$(CXXCOMPILE) -fimplicit-templates -o $@ $<
+	$(CXXCOMPILE) -std=gnu++11 -fimplicit-templates -o $@ $<
+
+src/c++11/compatibility-c++0x.o: src/c++11/compatibility-c++0x.cc
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
+
+src/c++11/compatibility-thread-c++0x.o: src/c++11/compatibility-thread-c++0x.cc 
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
+
+src/c++11/compatibility-chrono.o: src/c++11/compatibility-chrono.cc 
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
+
+src/c++11/compatibility-condvar.o: src/c++11/compatibility-condvar.cc 
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
 
 clean:
 	-rm -f *.o
diff --git a/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/Makefile b/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/Makefile
index c930829c2c..9fbaf09a16 100644
--- a/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/Makefile
+++ b/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/Makefile
@@ -6,68 +6,81 @@ LD = kos32-ld
 CPP= kos32-g++
 STRIP = kos32-strip
 
+INSTALLDIR:= /home/autobuild/tools/win32/mingw32/lib
+
+export SDK_DIR:= $(abspath ../../../../../sdk)
+
 CFLAGS = -U_Win32 -U_WIN32 -U__MINGW32__ -c -O2 -fno-ident -fomit-frame-pointer
-CPPFLAGS = -fno-rtti
+CFLAGSCPP = -nostdinc++ -fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi
+CFLAGSCPP+= -fdiagnostics-show-location=once -ffunction-sections -fdata-sections
 
 ARFLAGS= crs
 
-INCLUDES= -I. -I../include/mingw32 -I../include -I../../newlib/libc/include -I/home/autobuild/tools/win32/include
+GLIBCXX_INCLUDE_DIR= ../include
+INCLUDES= -I../include/mingw32 -I../include -I./ -I$(SDK_DIR)/sources/newlib/libc/include
 
-LIBS:=  -ldll -lc.dll
+DEFINES= -D_GLIBCXX_HAVE_TLS
 
-DEFINES= -DHAVE_CONFIG_H -DIN_GCC -DIN_GLIBCPP_V3 -DUSE_EMUTLS=1 -D_GLIBCXX_HAVE_TLS
+C_COMPILE= $(CC) $(CFLAGS) $(DEFINES) $(INCLUDES)
+CXXCOMPILE= $(CPP) $(CFLAGS) $(CFLAGSCPP) $(INCLUDES) $(DEFINES)
 
 
 SOURCES = 					\
-		cp-demangle.c			\
-		array_type_info.cc		\
-		atexit_thread.cc		\
-		bad_alloc.cc			\
-		bad_cast.cc			\
-		bad_typeid.cc			\
-		class_type_info.cc		\
-		del_op.cc			\
-		del_opnt.cc			\
-		del_opv.cc			\
-		del_opvnt.cc			\
-		dyncast.cc			\
-		eh_alloc.cc			\
-		eh_aux_runtime.cc		\
-		eh_call.cc			\
-		eh_catch.cc			\
-		eh_exception.cc			\
-		eh_globals.cc			\
-		eh_personality.cc		\
-		eh_ptr.cc			\
-		eh_term_handler.cc		\
-		eh_terminate.cc			\
-		eh_throw.cc			\
-		eh_tm.cc			\
-		eh_type.c			\
-		eh_unex_handler.cc		\
-		enum_type_info.cc		\
-		function_type_info.cc		\
-		fundamental_type_info.cc	\
-		guard.cc			\
-		guard_error.cc			\
-		hash_bytes.cc			\
-		nested_exception.cc		\
-		new_handler.cc			\
-		new_op.cc			\
-		new_opnt.cc			\
-		new_opv.cc			\
-		new_opvnt.cc			\
-		pbase_type_info.cc		\
-		pmem_type_info.cc		\
-		pointer_type_info.cc		\
-		pure.cc				\
-		si_class_type_info.cc		\
-		tinfo.cc			\
-		tinfo2.cc			\
-		vec.cc				\
-		vmi_class_type_info.cc		\
-		vterminate.cc
- 
+	cp-demangle.c \
+	array_type_info.cc \
+	atexit_arm.cc \
+	atexit_thread.cc \
+	bad_alloc.cc \
+	bad_array_length.cc \
+	bad_array_new.cc \
+	bad_cast.cc \
+	bad_typeid.cc \
+	class_type_info.cc \
+	del_op.cc \
+	del_ops.cc \
+	del_opnt.cc \
+	del_opv.cc \
+	del_opvs.cc \
+	del_opvnt.cc \
+	dyncast.cc \
+	eh_alloc.cc \
+	eh_arm.cc \
+	eh_aux_runtime.cc \
+	eh_call.cc \
+	eh_catch.cc \
+	eh_exception.cc \
+	eh_globals.cc \
+	eh_personality.cc \
+	eh_ptr.cc \
+	eh_term_handler.cc \
+	eh_terminate.cc \
+	eh_tm.cc \
+	eh_throw.cc \
+	eh_type.cc \
+	eh_unex_handler.cc \
+	enum_type_info.cc \
+	function_type_info.cc \
+	fundamental_type_info.cc \
+	guard.cc \
+	guard_error.cc \
+	hash_bytes.cc \
+	nested_exception.cc \
+	new_handler.cc \
+	new_op.cc \
+	new_opnt.cc \
+	new_opv.cc \
+	new_opvnt.cc \
+	pbase_type_info.cc \
+	pmem_type_info.cc \
+	pointer_type_info.cc \
+	pure.cc \
+	si_class_type_info.cc \
+	tinfo.cc \
+	tinfo2.cc \
+	vec.cc \
+	vmi_class_type_info.cc \
+	vterminate.cc
+  
 
 OBJECTS =  $(patsubst %.cc, %.o, $(patsubst %.c, %.o, $(SOURCES)))
 
@@ -76,29 +89,60 @@ OBJECTS =  $(patsubst %.cc, %.o, $(patsubst %.c, %.o, $(SOURCES)))
 all:$(LIBRARY).a
 
 $(LIBRARY).a: $(OBJECTS) Makefile
-	$(AR) $(ARFLAGS) $(LIBRARY).a $(OBJECTS)		
-	mv -f $(LIBRARY).a ../../../lib
+	$(AR) $(ARFLAGS) $(LIBRARY).a $(OBJECTS)
+	mv -f $(LIBRARY).a $(INSTALLDIR)
+
 
-%.o : %.c Makefile
-	$(CC) $(CFLAGS) $(DEFINES) $(INCLUDES) -o $@ $<
 
 %.o : %.cc Makefile
-	$(CPP) $(CFLAGS) $(CPPFLAGS) $(DEFINES) $(INCLUDES) -o $@ $<
+	$(CXXCOMPILE) -o $@ $<
 
-eh_ptr.o: eh_ptr.cc
-	$(CPP) $(CFLAGS) -std=gnu++0x $(CPPFLAGS) $(DEFINES) $(INCLUDES) -o $@ $<
+
+cp-demangle.o: cp-demangle.c
+	$(C_COMPILE) -DHAVE_CONFIG_H -D_USE_32BIT_TIME_T -DIN_GLIBCPP_V3 -Wno-error -o $@ $<
+
+bad_array_length.o: bad_array_length.cc
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
+
+bad_array_new.o: bad_array_new.cc 
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
+
+eh_aux_runtime.o: eh_aux_runtime.cc 
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
+
+eh_ptr.o: eh_ptr.cc 
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
+
+eh_terminate.o: eh_terminate.cc 
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
 
 eh_throw.o: eh_throw.cc
-	$(CPP) $(CFLAGS) -std=gnu++0x $(CPPFLAGS) $(DEFINES) $(INCLUDES) -o $@ $<
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
 
-guard.o: guard.cc
-	$(CPP) $(CFLAGS) -std=gnu++0x $(CPPFLAGS) $(DEFINES) $(INCLUDES) -o $@ $<
+guard.o: guard.cc 
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
 
-atexit_thread.o: atexit_thread.cc
-	$(CPP) $(CFLAGS) -std=gnu++0x $(CPPFLAGS) $(DEFINES) $(INCLUDES) -o $@ $<
+atexit_thread.o: atexit_thread.cc 
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
+
+nested_exception.o: nested_exception.cc 
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
+
+new_handler.o: new_handler.cc 
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
+
+new_op.o: new_op.cc 
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
+
+new_opnt.o: new_opnt.cc 
+	$(CXXCOMPILE) -std=gnu++11 -o $@ $<
+
+del_ops.o: del_ops.cc 
+	$(CXXCOMPILE) -std=gnu++14 -o $@ $<
+
+del_opvs.o: del_opvs.cc
+	$(CXXCOMPILE) -std=gnu++14 -o $@ $<
 
-nested_exception.o: nested_exception.cc
-	$(CPP) $(CFLAGS) -std=gnu++0x $(CPPFLAGS) $(DEFINES) $(INCLUDES) -o $@ $<
 
 clean: 
 	-rm -f *.o 
diff --git a/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/cp-demangle.c b/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/cp-demangle.c
index 00dd58ad1c..aef2e9b329 100644
--- a/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/cp-demangle.c
+++ b/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/cp-demangle.c
@@ -2302,7 +2302,7 @@ cplus_demangle_type (struct d_info *di)
 	  *pret = d_function_type (di);
 	}
       else
-      *pret = cplus_demangle_type (di);
+	*pret = cplus_demangle_type (di);
       if (!*pret)
 	return NULL;
       if ((*pret)->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS
@@ -2397,11 +2397,11 @@ cplus_demangle_type (struct d_info *di)
 	     candidate.  */
 	  if (! di->is_conversion)
 	    {
-	  if (! d_add_substitution (di, ret))
-	    return NULL;
-	  ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret,
-			     d_template_args (di));
-	}
+	      if (! d_add_substitution (di, ret))
+		return NULL;
+	      ret = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, ret,
+				 d_template_args (di));
+	    }
 	  else
 	    {
 	      struct demangle_component *args;
@@ -4109,7 +4109,7 @@ cplus_demangle_print_callback (int options,
 				 * sizeof (*dpi.copy_templates));
 #endif
 
-  d_print_comp (&dpi, options, dc);
+    d_print_comp (&dpi, options, dc);
   }
 
   d_print_flush (&dpi);
@@ -4334,7 +4334,7 @@ d_get_saved_scope (struct d_print_info *dpi,
 
 static void
 d_print_comp_inner (struct d_print_info *dpi, int options,
-              const struct demangle_component *dc)
+		  const struct demangle_component *dc)
 {
   /* Magic variable to let reference smashing skip over the next modifier
      without needing to modify *dc.  */
@@ -5785,9 +5785,9 @@ d_print_expr_op (struct d_print_info *dpi, int options,
 
 static void
 d_print_cast (struct d_print_info *dpi, int options,
-              const struct demangle_component *dc)
+		    const struct demangle_component *dc)
 {
-    d_print_comp (dpi, options, d_left (dc));
+  d_print_comp (dpi, options, d_left (dc));
 }
 
 /* Print a conversion operator.  */
@@ -5821,7 +5821,7 @@ d_print_conversion (struct d_print_info *dpi, int options,
 	 parameters from scope after printing the operator name,
 	 so we need to handle the template printing here.  */
       if (dpi->current_template != NULL)
-      dpi->templates = dpt.next;
+	dpi->templates = dpt.next;
 
       if (d_last_char (dpi) == '<')
 	d_append_char (dpi, ' ');
diff --git a/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/cp-demangle.h b/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/cp-demangle.h
index ae635beb4c..6fce0252dc 100644
--- a/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/cp-demangle.h
+++ b/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/cp-demangle.h
@@ -122,6 +122,11 @@ struct d_info
      mangled name to the demangled name, such as standard
      substitutions and builtin types.  */
   int expansion;
+  /* Non-zero if we are parsing an expression.  */
+  int is_expression;
+  /* Non-zero if we are parsing the type operand of a conversion
+     operator, but not when in an expression.  */
+  int is_conversion;
 };
 
 /* To avoid running past the ending '\0', don't:
diff --git a/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/demangle.h b/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/demangle.h
index 58bf547d54..7fa7557b2c 100644
--- a/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/demangle.h
+++ b/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/demangle.h
@@ -63,9 +63,10 @@ extern "C" {
 #define DMGL_EDG	 (1 << 13)
 #define DMGL_GNU_V3	 (1 << 14)
 #define DMGL_GNAT	 (1 << 15)
+#define DMGL_DLANG	 (1 << 16)
 
 /* If none of these are set, use 'current_demangling_style' as the default. */
-#define DMGL_STYLE_MASK (DMGL_AUTO|DMGL_GNU|DMGL_LUCID|DMGL_ARM|DMGL_HP|DMGL_EDG|DMGL_GNU_V3|DMGL_JAVA|DMGL_GNAT)
+#define DMGL_STYLE_MASK (DMGL_AUTO|DMGL_GNU|DMGL_LUCID|DMGL_ARM|DMGL_HP|DMGL_EDG|DMGL_GNU_V3|DMGL_JAVA|DMGL_GNAT|DMGL_DLANG)
 
 /* Enumeration of possible demangling styles.
 
@@ -87,7 +88,8 @@ extern enum demangling_styles
   edg_demangling = DMGL_EDG,
   gnu_v3_demangling = DMGL_GNU_V3,
   java_demangling = DMGL_JAVA,
-  gnat_demangling = DMGL_GNAT
+  gnat_demangling = DMGL_GNAT,
+  dlang_demangling = DMGL_DLANG
 } current_demangling_style;
 
 /* Define string names for the various demangling styles. */
@@ -102,6 +104,7 @@ extern enum demangling_styles
 #define GNU_V3_DEMANGLING_STYLE_STRING        "gnu-v3"
 #define JAVA_DEMANGLING_STYLE_STRING          "java"
 #define GNAT_DEMANGLING_STYLE_STRING          "gnat"
+#define DLANG_DEMANGLING_STYLE_STRING         "dlang"
 
 /* Some macros to test what demangling style is active. */
 
@@ -115,6 +118,7 @@ extern enum demangling_styles
 #define GNU_V3_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_GNU_V3)
 #define JAVA_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_JAVA)
 #define GNAT_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_GNAT)
+#define DLANG_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_DLANG)
 
 /* Provide information about the available demangle styles. This code is
    pulled from gdb into libiberty because it is useful to binutils also.  */
@@ -169,10 +173,17 @@ java_demangle_v3 (const char *mangled);
 char *
 ada_demangle (const char *mangled, int options);
 
+extern char *
+dlang_demangle (const char *mangled, int options);
+
 enum gnu_v3_ctor_kinds {
   gnu_v3_complete_object_ctor = 1,
   gnu_v3_base_object_ctor,
   gnu_v3_complete_object_allocating_ctor,
+  /* These are not part of the V3 ABI.  Unified constructors are generated
+     as a speed-for-space optimization when the -fdeclone-ctor-dtor option
+     is used, and are always internal symbols.  */
+  gnu_v3_unified_ctor,
   gnu_v3_object_ctor_group
 };
 
@@ -188,6 +199,10 @@ enum gnu_v3_dtor_kinds {
   gnu_v3_deleting_dtor = 1,
   gnu_v3_complete_object_dtor,
   gnu_v3_base_object_dtor,
+  /* These are not part of the V3 ABI.  Unified destructors are generated
+     as a speed-for-space optimization when the -fdeclone-ctor-dtor option
+     is used, and are always internal symbols.  */
+  gnu_v3_unified_dtor,
   gnu_v3_object_dtor_group
 };
 
@@ -365,6 +380,10 @@ enum demangle_component_type
   /* A typecast, represented as a unary operator.  The one subtree is
      the type to which the argument should be cast.  */
   DEMANGLE_COMPONENT_CAST,
+  /* A conversion operator, represented as a unary operator.  The one
+     subtree is the type to which the argument should be converted
+     to.  */
+  DEMANGLE_COMPONENT_CONVERSION,
   /* A nullary expression.  The left subtree is the operator.  */
   DEMANGLE_COMPONENT_NULLARY,
   /* A unary expression.  The left subtree is the operator, and the
diff --git a/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/gthr_mutex.c b/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/gthr_mutex.c
deleted file mode 100644
index f5cb8eb1a6..0000000000
--- a/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/gthr_mutex.c
+++ /dev/null
@@ -1,150 +0,0 @@
-#include <stdlib.h>
-#include <sys/errno.h>
-#include <kos32sys.h>
-
-void __mutex_lock(volatile int *val);
-
-static inline int tls_get(int key)
-{
-    int val;
-    __asm__ __volatile__(
-    "movl %%fs:(%1), %0"
-    :"=r"(val)
-    :"r"(key));
-
-  return val;
-};
-
-typedef struct {
-  int done;
-  long started;
-} __gthread_once_t;
-
-typedef struct {
-  int counter;
-  void *sema;
-} __gthread_mutex_t;
-
-typedef struct {
-  int counter;
-  int depth;
-  unsigned long owner;
-  int sema;
-} __gthread_recursive_mutex_t;
-
-
-int
-__gthr_win32_once (__gthread_once_t *once, void (*func) (void))
-{
-    if (once == NULL || func == NULL)
-        return EINVAL;
-
-    if (! once->done)
-    {
-        if (__sync_add_and_fetch (&(once->started), 1) == 0)
-        {
-            (*func) ();
-            once->done = 1;
-        }
-        else
-        {
-	  /* Another thread is currently executing the code, so wait for it
-	     to finish; yield the CPU in the meantime.  If performance
-	     does become an issue, the solution is to use an Event that
-	     we wait on here (and set above), but that implies a place to
-	     create the event before this routine is called.  */
-            while (! once->done)
-                delay(1);
-        }
-    }
-    return 0;
-}
-
-void __gthr_win32_mutex_init_function (__gthread_mutex_t *mutex)
-{
-  mutex->counter = 0;
-  mutex->sema = 0;
-}
-
-int __gthr_win32_mutex_lock (__gthread_mutex_t *mutex)
-{
-    __mutex_lock(&mutex->counter);
-    return 0;
-}
-
-int
-__gthr_win32_mutex_unlock (__gthread_mutex_t *mutex)
-{
-  mutex->counter = 0;
-  return 0;
-}
-
-void
-__gthr_win32_recursive_mutex_init_function (__gthread_recursive_mutex_t *mutex)
-{
-  mutex->counter = -1;
-  mutex->depth = 0;
-  mutex->owner = 0;
-  mutex->sema = 0;
-}
-
-void
-__gthr_win32_mutex_destroy (__gthread_mutex_t *mutex)
-{ }
-
-int
-__gthr_win32_recursive_mutex_lock (__gthread_recursive_mutex_t *mutex)
-{
-    int me = tls_get(0);
-    if ( __sync_add_and_fetch(&mutex->counter, 1) == 0)
-    {
-        mutex->depth = 1;
-        mutex->owner = me;
-        mutex->sema  = 1;
-    }
-    else if (mutex->owner == me)
-    {
-        __sync_sub_and_fetch(&mutex->counter, 1);
-        ++(mutex->depth);
-    }
-    else
-    {
-        __mutex_lock(&mutex->sema);
-        mutex->depth = 1;
-        mutex->owner = me;
-    }
-    return 0;
-}
-
-int
-__gthr_win32_recursive_mutex_trylock (__gthread_recursive_mutex_t *mutex)
-{
-    int me = tls_get(0);
-    if (__sync_val_compare_and_swap (&mutex->counter, -1, 0) < 0)
-    {
-        mutex->depth = 1;
-        mutex->owner = me;
-        mutex->sema  = 1;
-    }
-    else if (mutex->owner == me)
-        ++(mutex->depth);
-    else
-        return 1;
-
-  return 0;
-}
-
-int
-__gthr_win32_recursive_mutex_unlock (__gthread_recursive_mutex_t *mutex)
-{
-    --(mutex->depth);
-    if (mutex->depth == 0)
-    {
-        mutex->owner = 0;
-
-        if (__sync_sub_and_fetch (&mutex->counter, 1) >= 0)
-            mutex->sema = 0;
-    }
-
-    return 0;
-}
diff --git a/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/vterminate.idb b/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/vterminate.idb
deleted file mode 100644
index 0c32e179ff..0000000000
Binary files a/contrib/toolchain/gcc/5x/libstdc++-v3/libsupc++/vterminate.idb and /dev/null differ