The error shows up as:
-------------- Build: sdk in Code::Blocks wx2.9.x (compiler: GNU GCC Compiler)---------------
i686-w64-mingw32-g++.exe -Wall C:\CodeLib\CodeBlocks -pipe -mthreads -fmessage-length=0 -fexceptions -Winvalid-pch -ftrack-macro-expansion=0 -DHAVE_W32API_H -D__WXMSW__ -DWXUSINGDLL -DcbDEBUG -DCB_PRECOMP -DWX_PRECOMP -DwxUSE_UNICODE -Woverloaded-virtual -DEXPORT_LIB -DEXPORT_EVENTS -DWXMAKINGDLL_SCI -iquote.objs29\include -I.objs29\include -I. -IC:\CodeLib\wxWidgets-2.9.x\include -IC:\CodeLib\wxWidgets-2.9.x\lib\gcc_dll\mswu -Isdk\wxscintilla\include -Iinclude\tinyxml -Iinclude -Iinclude\tinyxml -Iinclude\scripting\bindings -Iinclude\scripting\include -Iinclude\scripting\sqplus -Iinclude\mozilla_chardet -Iinclude\mozilla_chardet\mfbt -Iinclude\mozilla_chardet\nsprpub\pr\include -Iinclude\mozilla_chardet\xpcom -Iinclude\mozilla_chardet\xpcom\base -Iinclude\mozilla_chardet\xpcom\glue -c C:\CodeLib\CodeBlocks\src\include\sdk_precomp.h -o .objs29\include\sdk_precomp.h.gch
In file included from C:/CodeLib/CodeBlocks/src/include/cbauibook.h:10:0,
                 from C:/CodeLib/CodeBlocks/src/include/sdk_common.h:125,
                 from C:\CodeLib\CodeBlocks\src\include\sdk_precomp.h:13:
C:/CodeLib/wxWidgets-2.9.x/include/wx/aui/auibook.h:349:18: warning: 'virtual bool wxAuiNotebook::AddPage(wxWindow*, const wxString&, bool, int)' was hidden [-Woverloaded-virtual]
     virtual bool AddPage(wxWindow *page, const wxString &text, bool select, 
                  ^
In file included from C:/CodeLib/CodeBlocks/src/include/sdk_common.h:125:0,
                 from C:\CodeLib\CodeBlocks\src\include\sdk_precomp.h:13:
C:/CodeLib/CodeBlocks/src/include/cbauibook.h:132:14: warning:   by 'bool cbAuiNotebook::AddPage(wxWindow*, const wxString&, bool, const wxBitmap&)' [-Woverloaded-virtual]
         bool AddPage(wxWindow* page,
              ^
In file included from C:/CodeLib/CodeBlocks/src/include/cbauibook.h:10:0,
                 from C:/CodeLib/CodeBlocks/src/include/sdk_common.h:125,
                 from C:\CodeLib\CodeBlocks\src\include\sdk_precomp.h:13:
C:/CodeLib/wxWidgets-2.9.x/include/wx/aui/auibook.h:352:18: warning: 'virtual bool wxAuiNotebook::InsertPage(size_t, wxWindow*, const wxString&, bool, int)' was hidden [-Woverloaded-virtual]
     virtual bool InsertPage(size_t index, wxWindow *page, const wxString &text,
                  ^
In file included from C:/CodeLib/CodeBlocks/src/include/sdk_common.h:125:0,
                 from C:\CodeLib\CodeBlocks\src\include\sdk_precomp.h:13:
C:/CodeLib/CodeBlocks/src/include/cbauibook.h:147:14: warning:   by 'bool cbAuiNotebook::InsertPage(size_t, wxWindow*, const wxString&, bool, const wxBitmap&)' [-Woverloaded-virtual]
         bool InsertPage(size_t page_idx,
              ^
In file included from C:/CodeLib/CodeBlocks/src/include/sdk_common.h:136:0,
                 from C:\CodeLib\CodeBlocks\src\include\sdk_precomp.h:13:
C:/CodeLib/CodeBlocks/src/include/toolsmanager.h:46:32: error: 'ToolsList::Node' has not been declared
   void DoRemoveTool(ToolsList::Node* node);
I'm using the mingw-4.8.1-win32-sjlj-rev2 (32-bit) compiler. I have successfully built wxWidgets-2.9.5+(trunk) with it with the following conditions:
WXVER_MINOR=9 
WXVER_RELEASE=5 
BUILD=release 
MONOLITHIC=1 
SHARED=1 
UNICODE=1 
TOOLKIT=MSW 
TOOLKIT_VERSION= 
WXUNIV=0 
CFG= 
VENDOR=custom 
OFFICIAL_BUILD=0 
DEBUG_FLAG=1 
DEBUG_INFO=default 
RUNTIME_LIBS=dynamic 
MSLU=0 
USE_EXCEPTIONS=1 
USE_RTTI=1 
USE_THREADS=1 
USE_AUI=1 
USE_GUI=1 
USE_HTML=1 
USE_MEDIA=1 
USE_OPENGL=1 
USE_QA=0 
USE_PROPGRID=1 
USE_RIBBON=1 
USE_RICHTEXT=1 
USE_STC=1 
USE_WEBVIEW=1 
USE_XRC=1 
COMPILER=gcc 
COMPILER_VERSION= 
CC=gcc 
CXX=g++ 
CFLAGS= 
CPPFLAGS= 
CXXFLAGS= 
LDFLAGS=-s 
I have seen other posts indicating that this may be related to wxSTL, but I did not build wx29 with STL enabled, and the setup_inc.h file indicates wxSTL = 0 (not enabled) also (by default).
I have been able to successfully build Code::Blocks with wxWidgets-2.8.12 using the same compiler, but I had hoped to use the "wx29" version. Any thoughts on how I may help troubleshoot this issue?