Am Freitag, 28. März 2014, 10:35:00 schrieb Lauri Kasanen: > On Thu, 27 Mar 2014 21:00:39 +0000 > > Emil Velikov <emil.l.veli...@gmail.com> wrote: > > By doing GC the linker removes all the symbols that are not referenced > > and/or used by the final library. This results in a saving of ~100K > > up-to ~600K per (stripped) binary (classic vs gallium drivers). > > > > If interested one can ask the compiler to print the sections that are > > removed using -Wl,--print-gc-sections. > > I didn't see where you add the corresponding flags to CFLAGS/CXXFLAGS. > > Without -ffunction-sections -fdata-sections in compile flags the garbage > collection is handicapped - add those by default too, and see much > greater gains. > > I should also add that this is a GNUism, so it should be detected for > in configure in case people use other compilers/linkers. It's also > redundant if LTO is used. > > In one of my projects I detect as such: > > if -flto supported, use it (needs to be added to all three CFLAGS > CXXFLAGS LDFLAGS)
lto is broken on many compiler/ld combinations. Even if it is supported I won't recomment to enable it. A config option to enable it would be nice though. Lauri, on which compiler/binutils version did you got it going? Marc _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
