How to find the memory usage
--format=berkeleyinstead of
--format=sysvwill give you output that may be more what you had in mind. For example:
arm-none-eabi-size --format=berkeley src/*.o libraries/common/*.o
text data bss dec hex filename
1503 0 0 1503 5df src/main.o
339 0 0 339 153 libraries/common/assert.o
84 0 0 84 54 libraries/common/compensator.o
516 4 64 584 248 libraries/common/edgetracker.o
328 0 0 328 148 libraries/common/ffcompensator.o
696 0 0 696 2b8 libraries/common/leadcompensator.o
682 49161 168 50011 c35b libraries/common/logger.o
;){kind=link}