I always used the GNU GCC compiler. Do I have to change it?
Using the MSVC++ is easier to do.
Import the MSVC++ project with the default Compiler set to what you wish to use.
Knowledge required: Must be skilled programmer with knowledge of both MinGW GCC, MSVC++, and Code::Blocks.
1. Use Foreign project importer to import MSVC++ project (under File -> Import Project)
2. Save the created Code::Blocks Project/Workspace.
3. Fix all the broken things.
how can I build the file systemc.lib
The above is likely to be hard to impossible to do; depending on what you mean. Hint: .lib files are NOT used/supported by Mingw GCC
Tim S.