On Fri, Jul 7, 2017 at 9:28 AM, Ben Gamari <b...@smart-cactus.org> wrote: > Ryan Scott <ryan.gl.sc...@gmail.com> writes: > >> Another things to note about 8.2 build times is that a bulk of the time is >> probably being spent during the linking phase. This is because GHC 8.2 has >> switched over to split-sections by default, but unfortunately, old versions >> of the BFD linker take a long time to link code that uses split-sections >> (see the discussion at [1]). There is ongoing work (which should hopefully >> land before the final 8.2 release) to use gold instead of BFD as the >> default linker when available, which will reduce linking times dramatically. >> > Indeed it has already landed. See #13541. > > In short, ./configure will now choose to use ld.gold or ld.lld if > available (although this can be disabled using the --disable-ld-override > configure flag).
Just from curiosity, does this apply to OS X? Of course, gold is ELF-only, so it surely doesn't apply, but there's still lld. OS X uses clang to compile so I thought it might already use lld, but the 'ld -v' output looks different, and lld.llvm.org implies it's a replacement for OS X ld, so maybe not. But it doesn't look like GNU ld either, so maybe it's not affected by the BFD bug? I'll try 8.2 on OS X and see if the link time changes. _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
