Linking issues with wxWidget sample on Ubuntu 12.04 (amd64) - c++

Question

I have a problem linking the wxWidget sample application (http://www.wxwidgets.org/docs/tutorials/hello.htm) with is stored in main.cpp. I try to compile and link it using:
g++ `wx-config --cxxflags --libs` main.cpp
The output I get is the following:
/tmp/ccFHWUaX.o: In function `wxCreateApp()':
main.cpp:(.text+0x31): undefined reference to `wxAppConsole::CheckBuildOptions(char const*, char const*)'
/tmp/ccFHWUaX.o: In function `main':
main.cpp:(.text+0x91): undefined reference to `wxEntry(int&, char**)'
/tmp/ccFHWUaX.o: In function `MyFrame::MyFrame(wxString const&, wxPoint const&, wxSize const&)':
main.cpp:(.text+0x1d2): undefined reference to `wxFrameNameStr'
main.cpp:(.text+0x267): undefined reference to `wxEmptyString'
main.cpp:(.text+0x2ea): undefined reference to `wxEmptyString'
main.cpp:(.text+0x366): undefined reference to `wxMenuBar::wxMenuBar()'
main.cpp:(.text+0x3d1): undefined reference to `wxFrameBase::SetMenuBar(wxMenuBar*)'
main.cpp:(.text+0x3da): undefined reference to `wxStatusLineNameStr'
main.cpp:(.text+0x407): undefined reference to `wxFrame::CreateStatusBar(int, long, int, wxString const&)'
main.cpp:(.text+0x44f): undefined reference to `wxFrameBase::SetStatusText(wxString const&, int)'
main.cpp:(.text+0x533): undefined reference to `wxFrame::~wxFrame()'
(and many lines more...)
WxWidgets-2.8 is installed using the ubuntu repository and its libs are located in /usr/lib/x86_64-linux-gnu. I also tried to build specifying the library path with:
-L/usr/lib/x86_64-linux-gnu/
but, this does not change the output. I was blaming multiarch for my problem, but actually only as I don't know how it works exactly.
Can someone tell me how to build the sample correctly?
Thank you
Michael

Answer 1

When using static linking, the libraries must always come after the object files using the symbols from them, otherwise they're simply ignored by the linker as they're not needed at the moment when it first sees them. So us2012 is correct, you need to put wx-config part after your source file.
You could also use shared wxWidgets libraries, then the order wouldn't matter. But it's still a good habit to use the right order, which works for both static and shared libraries, anyhow.