20/09/2019 09:38, Ray Kinsella: > > On 19/09/2019 16:16, Bruce Richardson wrote: > > On Thu, Sep 19, 2019 at 02:28:04PM +0100, Ray Kinsella wrote: > >> > >> > >> On 19/09/2019 13:35, Andrzej Ostruszka wrote: > >>> On 9/18/19 3:32 PM, Ray Kinsella wrote: > >> ...> > >>> Compilation time is much longer. In a normal hack|fix/compile/repeat > >>> cycle with "compile" part being simple "make" the link time might be a > >>> bit annoying. So I imagine keeping LTO off for the most part of the dev > >>> cycle and then at the end when doing release/cleanup turn LTO on - to > >>> either get release build ready or to get some set of warnings that you > >>> address before yet another attempt to release build. > >> > >> Well look, I would say a few things. > >> > >> 1. I see build times going down dramatically with Meson/Ninja in any case. > > > > In the general case yes, but mainly it helps if you have a large number of > > cores. For anyone building in a CI with only a couple of cores, meson+ninja > > isn't going to help much. > > > > /Bruce > > > > Very true, and I completely acknowledge that LTO adds compilation time. > I would just like to see it in or out, not another build time option.
Please can we get some numbers to understand how longer it is?
