very large sketch size ...

Development Boards Arduino
1

Using IDE 1.0.6 on a MAC, the sketches compiled for the pro micro are always larger than for other boards, for instance a sketch compiled for the Uno will give a size of 2,154 bytes, the same sketch for the pro micro gives 5,689 bytes. Another sketch gives 3,424 bytes on the Uno and 5,976 bytes for the pro micro… and a third one, trying to get a patern here, gives 2116 for the Uno and 6064 for the pro micro… There is no apparent patern, the differences between the Uno and the pro are in order: 3535, 2552 and 3947. I’m using the Sparkfun library and can see all the Sparkfun boards.

Any ideas ???

Thank’s

2

I don’t use the Pro Micro but I can think of a couple of possibilities: either the USB bootloader counts in the sketch, or the compiler code optimization levels are different. Try forcing “-Os” compiler optimization (however that is done on the Mac).