How to write a separate rule for debugging nRF51822 in Makefile

[diode]

I have been learning GCC+ Make work flow to build and debug nRF51822 S110-only applications based on the examples from NRF51 SDK v10.0.0. I started with ble_app_beacon example, and it could compile and download app to nRF51822. The default Makefile is pasted here.

Now I want to debug the program with JLink GDB server, and I need to first compile with symbol tables with GCC -g flag. I am wondering what the standard procedure is for this purpose. I am thinking of writing a separate rule so that invoking make debug will do. But I am not sure how to maintain two different CFLAGS for make and make debug and such.

[RK]

adding a make debug rule is the usual way of setting up makefiles for this. Just hunt around and find any makefile on any open source project anywhere on the web which does this and copy that piece of it.

Or read the make documentation on target-specific variables www.gnu.org/.../Target_002dspecific.html