If you want to download the source code of Code::Blocks 12.11, here are the links:
For older versions please check here.
Alternatively, you could retrieve the code from SVN. Either way, if it turns out you need to patch the source code in order to create packages for your favourite Linux distribution, we 'd be interested to know about the needed changes so we can include them in our next release.
For Windows, we also provide the pre-compiled wxWidgets, version 2.8.12 used to compile the release. You can download and extract it either from BerliOS or SourceForge. When opening a Code::Blocks project file it will usually ask you to define the root of the global compiler variable named "wx" which you simply point to the extracted folder from that archive.
Note that wxWidgets comes compiled in a shared,monolithic,release,unicode flavour, compiled like that:
mingw32-make -f makefile.gcc SHARED=1 MONOLITHIC=1 BUILD=release UNICODE=1 VENDOR=cb