How to generate a memory map?

[Brunni]

Hello,
I'm trying to generate a map using GCC (under cygwin) but it doesn't work, I tried -Wl, --print-map, -map=file.map and so on, and options are recognized, but no map is ever generated anyways.
I would like to know what I should modify in my makefile to generate a memory map for my program?
Thanks ^^