On 11.04.2018 20:55, Jakub Jelinek wrote: > On Wed, Apr 11, 2018 at 06:07:17PM +0200, Matthias Klose wrote: >> On 11.04.2018 12:31, Jakub Jelinek wrote: >>> Hi! >>> >>> As discussed, using --as-needed and --no-as-needed is dangerous, because >>> it results in --no-as-needed even for libraries after -lgcc_s, even when the >>> default is --as-needed or --as-needed has been specified earlier on the >>> command line. >>> >>> If the linker supports --push-state/--pop-state, we should IMHO use it. >>> >>> Bootstrapped/regtested on x86_64-linux and i686-linux, ok for stage1? >>> >>> Or is this something we want in GCC8 too? >> >> this is problematic for binutils versions with --push-state/--pop-state >> support >> in the BFD linker but not in gold, and then using -fuse-ld=gold. So maybe >> the >> version check for the BFD linker should only succeed for the first binutils >> version which also has -push-state/--pop-state support in gold. > > Does anybody use -fuse-ld=gold?
grep the build log of your favorite distro, unless these are not beautified and not showing any command line options. For Debian/Ubuntu it's haskell using gold by default, and some upstreams like systemd turns it on by default, assuming it has the same quality on any architecture.
