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) else if sections supported, use it else print a message they're missing out - Lauri _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
