Linking error

Linking obj/*.o...obj/savestate.o: In function `WriteSave(char const*, SAVESTATE_t*, int)':
/home/albert/wabbitemu/src/utilities/savestate.c:1071: warning: the use of `tmpnam' is dangerous, better use `mkstemp'
obj/droptarget.o: In function `wxStringBase':
/usr/include/wx-2.8/wx/string.h:352: undefined reference to `wxOnAssert(wchar_t const*, int, char const*, wchar_t const*, wchar_t const*)'
obj/droptarget.o: In function `wxArrayString::Item(unsigned int) const':
/usr/include/wx-2.8/wx/arrstr.h:155: undefined reference to `wxOnAssert(wchar_t const*, int, char const*, wchar_t const*, wchar_t const*)'
obj/gui_wx.o: In function `wxStringBase::at(unsigned int)':
gui_wx.cpp:(.text._ZN12wxStringBase2atEj[wxStringBase::at(unsigned int)]+0x43): undefined reference to `wxOnAssert(wchar_t const*, int, char const*, wchar_t const*, wchar_t const*)'
obj/gui_wx.o:(.rodata._ZTV5MyApp[vtable for MyApp]+0x90): undefined reference to `wxApp::OnAssertFailure(wchar_t const*, int, wchar_t const*, wchar_t const*, wchar_t const*)'
obj/gui_wx.o:(.rodata._ZTV5MyApp[vtable for MyApp]+0x94): undefined reference to `wxAppConsole::OnAssert(wchar_t const*, int, wchar_t const*, wchar_t const*)'
collect2: ld returned 1 exit status
Linking obj/*.o... FAILED!
Compile failed.