On Fri, Jul 20, 2018 at 8:16 PM Peter Geoghegan <p...@bowt.ie> wrote: > On Mon, Jul 9, 2018 at 4:40 PM, Andres Freund <and...@anarazel.de> wrote: > > FWIW, I've lately noticed that I spend a fair time waiting for the > > linker during edit-compile-test cycles. Due to an independent issue I > > just used the gold linker, and the speedup is quite noticable. > > For me just adding '-fuse-ld=gold' to CFLAGS works. > > I tried this out today. It makes quite a noticeable difference for me. > Thanks for the tip.
The 2022 version of the same tip: switching over to LLVM lld seems to offer a further significant speedup over gold. Not surprising, since lld is specifically promoted as a linker that is faster than gold [1]. Again, this appears to just be a case of installing lld, and adding '-fuse-ld=lld' to CFLAGS -- a very easy switch to make. Link time is still a noticeable contributor to overall build time for me, even with gold (I use ccache, of course). There is another linker called mold [2]. It claims to be faster than lld (which was faster than gold, which was faster than ld). I didn't bother trying it out. [1] https://llvm.org/devmtg/2017-10/slides/Ueyama-lld.pdf - slide 14 [2] https://github.com/rui314/mold -- Peter Geoghegan
