On Thu, Dec 2, 2010 at 9:00 AM, Ian Lance Taylor <i...@google.com> wrote: > "H.J. Lu" <hjl.to...@gmail.com> writes: > >> I am not saying we should go with 2 stage linking. Just for clarification. >> In 2 stage linking, the first stage only does symbol resolution. The complete >> linking starts at the second stage. So we don't do really complete relink >> in 2 stage linking. > > Understood. But you still read and process all the symbols twice. It > can be done if it must be done, but it would be significantly better to > do something else if possible. >
Without 2 stage linking, which many compilers do for LTO, we will add hack on top of hack. As Richard pointed out, we need at least -lc -lgcc -lm -lpthreads -lgcov and maybe libssp, libgomp, ... -lm is currently added by user, not GCC driver Pass-through is just a hack, not a solution. -- H.J.
