Mingw64 compiler wxwidgets 3.0.2 common error Analysis _c language

To compile wxWidgets3.0.2 using MINGW64, you first have to download Wxmsw-setup-3.0.2.exe (https://sourceforge.net/projects/wxwindows/files/3.0.2/ Wxmsw-setup-3.0.2.exe, and then compile with the following steps (assuming you want to compile a Unicode shared library version of wxwidgets):

CD X:\WXWIDGETS-3.0.2\BUILD\MSW

Make-f MAKEFILE.GCC shared=1 unicode=1

However, when compiled into half, from C code to C + + code, it will produce the following error (there are many similar errors, select only one):

In the file included from e:\mingwd\mingw\include\c++\5.2.0\type_traits:35:0,
                  from.. \.. \INCLUDE/WX/STRVARARG.H:25,
                  from.. \.. \include/wx/string.h:46,
                  from.. \.. \include/wx/any.h:19,
                  from.. /.. /src/common/any.cpp:18:
E:\mingwd\mingw\include\c++\5.2.0\bits\c++0x_warning.h:32:2: Error: #error this file requires compiler and library support for the ISO C + + standard. This support is currently experimental, and must being enabled with THE-STD=C++11 or-std=gnu++11 options.

Since only c++11 support not open the problem, just change the cxxflags can, so, as follows command recompile.

Make-f makefile.gcc cxxflags= "-std=c++11" shared=1 unicode=1 clean

Make-f makefile.gcc cxxflags= "-std=c++11" shared=1 unicode=1

All middleware was compiled this time, but there was a problem when it came to the link:

E:\WXWIDGETS-3.0.2\LIB\GCC_LIB64/LIBWXMSW30UD.A (MONOLIB_FILENAME.O): in function ' Wxchmod (wxstring const& unsigned short) ':
e:\wxwidgets-3.0.2\build\msw/.. /.. /include/wx/filefn.h:513:undefined reference to ' Wxmslu__wchmod (wchar_t const*, int) '
E:\WXWIDGETS-3.0.2\LIB\GCC_LIB64/LIBWXMSW30UD.A (MONOLIB_FILENAME.O): in function ' Wxopen (wxstring const&, int, unsigned short) ':
e:\wxwidgets-3.0.2\build\msw/.. /.. /include/wx/filefn.h:515:undefined reference to ' Wxmslu__wopen (wchar_t const*, int, int) '
E:\WXWIDGETS-3.0.2\LIB\GCC_LIB64/LIBWXMSW30UD.A (MONOLIB_FILE.O): in function ' Wxremove (wxstring const&) ':
e:\wxwidgets-3.0.2\build\msw/.. /.. /include/wx/wxcrt.h:758:undefined reference to ' Wxmslu__wremove (wchar_t const*) '
E:\WXWIDGETS-3.0.2\LIB\GCC_LIB64/LIBWXMSW30UD.A (MONOLIB_FILE.O): in function ' wxaccess (wxstring const& unsigned short) ':
......

This is really makes me baffled, rummaged every corner of the Docs folder, finally found the answer in Install.txt, there is such a sentence:

C++11 note:if you want to compile wxWidgets into c++11 mode, you currently have
To use-std=gnu++11 switch as-std=c++11 disables some extensions
That's wxWidgets relies on. i.e. please use cxxflags= "-std=gnu++11".

It's clear that you can't compile with "std=c++11," which can lead to some wxwidgets-dependent extensions (extension?). ) The problem of being shielded. Then recompile with the following command, and it succeeds.

Make-f makefile.gcc cxxflags= "-std=gnu++11" shared=1 unicode=1 clean

Make-f makefile.gcc cxxflags= "-std=gnu++11" shared=1 unicode=1

Postscript

As it says about extensions, the idea here is to expand, that GNU g++ (GCC) provides support for C + + code in addition to C + + standards. If these support is not enabled, it will naturally lead to a library compiler like Wxwidgets failed, but it is not necessarily a good idea to rely on additional implementations outside of the language.