There are a couple of flags you can use to statically modify RIOT's behavior or to enable/disable certain features.

Usage Example:

make CFLAGS=DSCHEDSTATISTICS QUIET=1 clean all

General

• CFLAGS=-DSCHEDSTATISTICS - enable gathering and display of scheduler statistics
• CFLAGS=-DDEVELHELP - enable certain code sections useful for development
• CFLAGS=-DSCHED_TEST_STACK - enable (simple) testing for stack overflows

Make Specific

• QUIET=1 / QUIET=0 - enable/disable hiding of compiler invocations

Platform Specific

native

• CFLAGS=-DNATIVE_AUTO_EXIT - terminate the native process after the last RIOT thread has exited.

Module Specific

transceiver

• CFLAGS=-DDBG_IGNORE - enable the transceivers ignore command (useful for debugging)