How do I tell gcc to generate foo.s and foo.lst files?

[Sergei Yakovlev]

Google suggested to use:
gcc -O2 -S -c foo.c
and
gcc -c -g -Wa,-a,-ad [other GCC options] foo.c > foo.lst

So I've run:
m68k-elf-gcc -c -g -Wa,-a,-ad  m5223x.c > m5223x.lst
File m5223x.lst was actually empty :(
68K GAS  /cygdrive/c/TEMP/ccyI14Wz.s             page 1


   1                       .file    "m5223x.c"
   2                       .file 1 "m5223x.c"
  10                   .Ltext0:
  11                   .Letext0:
68K GAS  /cygdrive/c/TEMP/ccyI14Wz.s             page 2


DEFINED SYMBOLS
                            *ABS*:00000000 m5223x.c

NO UNDEFINED SYMBOLS
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