On 7/24/19 9:03 AM, Allan Sandfeld Jensen wrote: > On Mittwoch, 24. Juli 2019 08:45:21 CEST Martin Liška wrote: >> On 7/24/19 12:11 AM, Allan Sandfeld Jensen wrote: >>> On Dienstag, 23. Juli 2019 10:30:07 CEST Martin Liška wrote: >>>> Hi. >>>> >>>> As we as openSUSE started using -flto, I see it very handy to have >>>> an option value that will automatically detect number of cores >>>> that can be used for parallel LTRANS phase. >>>> >>>> Thoughts? >>> >>> That's really nice. >>> >>> How much extra work would it be to make it support a posix make jobserver? >> >> We do support it via -flto=jobserver: >> > Good to know :) > >> >> Problem is that nowadays you how much more common make systems like ninja, >> meson and others that probably do not support that. >> > There are patches to enable it in ninja, and I know some Linux distros apply > the patches by default. Though that is more listening, so it probably > requires > launching ninja using make, if you want to be able to pass it own to gcc.
Btw. I know that Nathan will need a much closer integration between a compiler and a build system for hit C++ modules work. That can be a good opportunity for the LTO to utilize the infrastructure as well. Martin > > 'Allan > >
