Multiple errors when compiling wxWidgets with gcc 4.8.1 - gcc

Question

I've been trying for a while now compile wxWidgets library for Code::Blocks and I am still getting a lot of different errors.
My gcc verions is: gcc (tdm-2) 4.8.1 and I want to build newest wxWidgets: 3.1.0. I've tried 3 different sources and each time I have some error (sometimes this same, sometimes different). I am working on Windows 8.1.
[1]mingw32-make -f makefile.gcc UNICODE=1 MONOLITHIC=1 SHARED=1 BUILD=debug CXXFLAGS="-std=gnu++11"
and the error output:
../../src/common/wxcrt.cpp: In function 'int wxVsprintf(wchar_t*, const wxString
&, va_list)':
../../src/common/wxcrt.cpp:623:47: error: invalid conversion from 'const wchar_t
*' to 'size_t {aka unsigned int}' [-fpermissive]
return wxCRT_VsprintfW(str, format.wc_str(), argptr);
^
../../src/common/wxcrt.cpp:623:56: error: cannot convert 'va_list {aka char*}' t
o 'const wchar_t*' for argument '3' to 'int vswprintf(wchar_t*, size_t, const wc
har_t*, char*)'
return wxCRT_VsprintfW(str, format.wc_str(), argptr);
^
../../src/common/wxcrt.cpp:632:1: warning: control reaches end of non-void funct
ion [-Wreturn-type]
}
^
makefile.gcc:6786: recipe for target 'gcc_mswuddll\monodll_wxcrt.o' failed
mingw32-make: *** [gcc_mswuddll\monodll_wxcrt.o] Error 1
[2]mingw32-make -f makefile.gcc SHARED=1 UNICODE=1 BUILD=debug and the error output:
../../src/common/wxcrt.cpp: In function 'int wxVsprintf(wchar_t*, const wxString
&, va_list)':
../../src/common/wxcrt.cpp:623:47: error: invalid conversion from 'const wchar_t
*' to 'size_t {aka unsigned int}' [-fpermissive]
return wxCRT_VsprintfW(str, format.wc_str(), argptr);
^
../../src/common/wxcrt.cpp:623:56: error: cannot convert 'va_list {aka char*}' t
o 'const wchar_t*' for argument '3' to 'int vswprintf(wchar_t*, size_t, const wc
har_t*, char*)'
return wxCRT_VsprintfW(str, format.wc_str(), argptr);
^
../../src/common/wxcrt.cpp:632:1: warning: control reaches end of non-void funct
ion [-Wreturn-type]
}
^
makefile.gcc:11860: recipe for target 'gcc_mswuddll\basedll_wxcrt.o' failed
mingw32-make: *** [gcc_mswuddll\basedll_wxcrt.o] Error 1
[3]mingw32-make -f makefile.gcc USE_XRC=1 SHARED=1 MONOLITHIC=1 BUILD=release UNICODE=1 USE_OPENGL=1 VENDOR=cb CXXFLAGS="-fno-keep-inline-dllexport"1 and the error:
../../src/common/wxcrt.cpp: In function 'int wxVsprintf(wchar_t*, const wxString
&, va_list)':
../../src/common/wxcrt.cpp:623:47: error: invalid conversion from 'const wchar_t
*' to 'size_t {aka unsigned int}' [-fpermissive]
return wxCRT_VsprintfW(str, format.wc_str(), argptr);
^
../../src/common/wxcrt.cpp:623:56: error: cannot convert 'va_list {aka char*}' t
o 'const wchar_t*' for argument '3' to 'int vswprintf(wchar_t*, size_t, const wc
har_t*, char*)'
return wxCRT_VsprintfW(str, format.wc_str(), argptr);
^
../../src/common/wxcrt.cpp:632:1: warning: control reaches end of non-void funct
ion [-Wreturn-type]
}
^
makefile.gcc:6786: recipe for target 'gcc_mswudll\monodll_wxcrt.o' failed
mingw32-make: *** [gcc_mswudll\monodll_wxcrt.o] Error 1
Can someone please advice me what more I can do?

Answer 1

I'm not sure why are you speaking about multiple errors, this is clearly one and the same error and is due to using standard-like vswprintf() instead of the function from MSVC CRT which is normally used by MinGW by default. The former should only be used when __USE_MINGW_ANSI_STDIO is in effect and it's very strange that you still get it without it, I wonder if you have CPPFLAGS or similar set in your environment?
Anyhow, I'd recommend using TDM-GCC 4.9 as 3.1.0 definitely compiles with it (this is what the official binaries have been built with). 4.8 is supposed to work too, of course, so it could be worth checking how is __USE_MINGW_ANSI_STDIO getting defined, but installing 4.9 will probably be simpler for you.