Install MSYS and MinGW-w64

• Download MSYS2 and install it.

Update MSYS2:

pacman -Syy
pacman -Syu

Install MinGW-w64

pacman -S mingw-w64-x86_64-toolchain

Install all members.

Install CodeBlocks

• Download codeblocks-20.03-setup.exe and install it.

Configure debugger

• In the top menu go to Settings and select Debugger...
• In the left pane select GDB/CDB debugger
• Click Create Config and enter a name (e.g. Debug_MINGW64)
• Select this new entry on the left
• Set the location to C:\msys64\mingw64\bin\gdb.exe
• Uncheck Disable startup scripts (-nx) GDB only
• Leave the other settings to their defaults (including Debugger type = GDB) and press OK

Configure compiler

• In the top menu go to Settings and select Compiler...
• Under Selected compiler choose GNU GCC Compiler
• Click Copy and enter a name (e.g. MINGW64)
• Under Selected compiler choose this new entry (should be at the bottom of the list)
• Click the tab Toolchain executables
• Under Compiler's installation directory set the location to C:\msys64\mingw64
• Click the tab Program Files and set the following settings:
  • C compiler: x86_64-w64-mingw32-gcc.exe
  • C++ compiler: x86_64-w64-mingw32-g++.exe
  • Linker for dynamic libs: x86_64-w64-mingw32-g++.exe
  • Linker for static libs: x86_64-w64-mingw32-gcc-ar.exe
  • Debugger: Debug_MINGW64 (as created earlier)
  • Resource compiler: windres.exe
  • Make program: mingw32-make.exe