hmmm.... when I used -Os I got the below error (last few lines) LD init/built-in.o LD .tmp_vmlinux1 mm/built-in.o: In function `index_of': /home/mkatiyar/personal/uml/linux-2.6.23.12/mm/slab.c:341: undefined reference to `__bad_size' /home/mkatiyar/personal/uml/linux-2.6.23.12/mm/slab.c:341: undefined reference to `__bad_size' /home/mkatiyar/personal/uml/linux-2.6.23.12/mm/slab.c:341: undefined reference to `__bad_size' /home/mkatiyar/personal/uml/linux-2.6.23.12/mm/slab.c:341: undefined reference to `__bad_size' /home/mkatiyar/personal/uml/linux-2.6.23.12/mm/slab.c:341: undefined reference to `__bad_size' mm/built-in.o:/home/mkatiyar/personal/uml/linux-2.6.23.12/mm/slab.c:341: more undefined references to `__bad_size' follow collect2: ld returned 1 exit status KSYM .tmp_kallsyms1.S nm: '.tmp_vmlinux1': No such file No valid symbol. make: *** [.tmp_kallsyms1.S] Error 1 However using just -O I am able to compile properly . What does "s" specify with -O ? On Mon, Mar 17, 2008 at 8:56 PM, Erik Mouw <mouw@xxxxxxxxxxxx> wrote: > > On Mon, Mar 17, 2008 at 07:15:37PM +0700, Mulyadi Santosa wrote: > > hello > > > > On Mon, Mar 17, 2008 at 5:44 PM, Manish Katiyar <mkatiyar@xxxxxxxxx> wrote: > > > Hi, > > > > > > I want to have maximum debugging symbols in my kernel image and > > > currently I have changed the build flags in my top level Makefile so > > > that they look like below. > > > > uhm, prevents inlining at all cost? And no -O, even -Os? > > Some inlining is required and it shouldn't really matter for debugging. > You probably want -O, not -Os or -O2. > > > Erik > > -- > Erik Mouw -- mouw@xxxxxxxxxxxx > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.6 (GNU/Linux) > > iD8DBQFH3o2m/PlVHJtIto0RAgJ3AJ9acU8UdMloGMrQZzhmDdi1k6zUkQCfTkKy > fh+HtT+eFzY6Qmai01mDnDs= > =60PS > -----END PGP SIGNATURE----- > > -- Thanks & Regards, ******************************************** Manish Katiyar ( http://mkatiyar.googlepages.com ) 3rd Floor, Fair Winds Block EGL Software Park Off Intermediate Ring Road Bangalore 560071, India *********************************************** -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
