Arnaldo Carvalho de Melo <[EMAIL PROTECTED]> writes: > > [EMAIL PROTECTED] net-2.6]$ l /tmp/sys_ia32.o.before /tmp/sys_ia32.o.after > -rw-rw-r-- 1 acme acme 185240 2008-02-06 19:19 /tmp/sys_ia32.o.after > -rw-rw-r-- 1 acme acme 248328 2008-02-06 19:00 /tmp/sys_ia32.o.before > > Almost 64KB only on this object file!
Just FYI, newer gcc does this in theory automatically when you specify -feliminate-unused-debug-types -feliminate-unused-debug-symbols But in my tests on gcc 4.1 / gcc 4.2 it doesn't seem to make any difference currently :/ Not sure what is wrong. There is also -feliminate-dwarf2-dups, but it seems to even increase obj dir size. Also -feliminate-dwarf2-dups seems to generate a lot of WARNING: vmlinux.o (.gnu.linkonce.wi.mmzone.h.97561702): unexpected section name. The (.[number]+) following section name are ld generated and not expected. Did you forget to use "ax"/"aw" in a .S file? Note that for example <linux/init.h> contains section definitions for use in .S files. etc. warnings But the kernel builds fine even with those warnings. Still if you just want to shrink objdir size then figuring out what's wrong with these options and then specifying them would be probably the best strategy than to try to do it all manually. That said removing unused includes is of course a valuable clean up by itself, I'm just not sure it's the best way to get smaller object dirs. -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
