The beta branch now contains an update that adds C++11 support for GCC on Linux. To use this you must enable C++11 support in the compiler settings in Code::Blocks. Select the Settings > Compiler and Debugger... menu item and then check the box indicated below.

All new projects created from the Leadwerks templates will work correctly out-of-the-box.

Your existing projects need a couple of new libraries added to them. The easiest way to do this is to open the CBP project file in a text editor. Find two chunks of text that look like this:

<Linker>
<Add library="$(LeadwerksPath)/Library/Linux/Debug/Leadwerks.a" />
<Add library="dl" />
<Add library="openal" />
<Add library="GL" />
<Add library="GLU" />
<Add library="$(LeadwerksPath)/Library/Linux/libluajit.a" />
<Add library="../../libsteam_api.so" />
<Add library="X11" />
<Add library="Xext" />
<Add library="pthread" />
</Linker>

Add these two libraries to the list. Remember, this will occur twice in the file.

<Add library="Xrender" />
<Add library="Xft" />

Save the project file and you're ready to use C++11 features with Leadwerks on Linux.