This is a quick post that shows how to enable gdb and/or gdbserver on the Raspberry Pi when using Buildroot.

Enable option Build packages with debugging symbols, under Build Options

Enable the following options under Toolchain

• Build cross gdb for the host - to facilitate remote debugging
• Thread library debugging - to enable adding gdb and gdbserver packages to the device’s root file system

Select gdb and gdbserver (useful for remote debugging), under Target packages, “Debugging, profiling and benchmark”