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This version that includes MingW is sufficient. For Windows, it is offered optionally with the MingW compiler. The MinGW C++ Toolbox installer does not seem to correctly set the PATH environment variable so you will probably have to set it manually. Code::Blocks can work with a variety of compilers. If you have older MinGW installations or cygwin installed make sure that MinGW C++ Toolbox directory paths are positioned before any other mingw/cygwin paths in the PATH environment variable. The installers/packages with compiler include the GNU compiler suite and GNU debugger (GDB) from TDM-GCC (version 5.1.0, 32 bit, SJLJ). Also make sure that the paths in Search Directories settings are pointing to valid MinGW C++ Toolbox sub-directories. You can use the little button to the right of the directory entry field to navigate to the correct directory. Make sure that the Compiler Installation Directory is set to your MinGW C++ Toolbox directory. Open up the Compiler/Debugger settings dialogue. The Dev-cpp installation uses MinGW 3.4.2 which will not work with the Ogre SDK. For those migrating from Dev-cpp, this can be a problem, since Code::Blocks will probably find the Dev-cpp installation of MinGW before the one you just installed. If you have several different MinGW versions installed, Code::Blocks will only select the first one it finds.
