If you're on a Mac, look for a command prompt application called "Terminal". If you're on a Windows machine, open the windows command prompt or "Git Bash". Once you've opened your terminal application ...

or you can use the pre-compiled gdb in the tools directory. a linux-0.11 hardware image file: hdc-0.11.img $ sudo port install qemu $ sudo port install i386-elf-binutils i386-elf-gcc ...