On Mon, Apr 04, 2011 at 01:24:06PM +0100, Andrew Haley wrote: > On 04/04/2011 11:39 AM, Jiri Olsa wrote: > > Andrew wrote: > >> Try -ffunction-sections . > > > > that did not help, I stil can see the dead code in the final > > executable. I tried it together with some of the -O options but > > that did not help as well.. > > > > any other ideas? > > Please don't top-post on gcc lists. > > > ps please keep me in CC as I'm not subscribed to the list, thanks > > That works for me. You'll have to tell us what you did. > > $ gcc a.c b.c -ffunction-sections > $ nm a.out | grep -i ' t ' > 00000000004005b0 t __do_global_ctors_aux > 0000000000400430 t __do_global_dtors_aux > 00000000004005a0 T __libc_csu_fini > 0000000000400510 T __libc_csu_init > 00000000004005e8 T _fini > 0000000000400390 T _init > 00000000004003e0 T _start > 000000000040040c t call_gmon_start > 00000000004004a0 t frame_dummy > 00000000004004f4 T krava > 00000000004004d9 T main right ;) my main concern was that after the linking, the dead code (overloaded functions) stayed in the binary - even with no symbol assigned. But I was advised to use ld option "--gc-sections" together with "-ffunction-sections", which removed unused sections (functions) out of the final binary so I'm fine for now ;) thanks, jirka
