On Wed, Nov 04, 2020 at 01:06:03PM -0800, Tom Stellard wrote: > On 11/4/20 3:57 PM, Jakub Jelinek wrote: > > On Wed, Nov 04, 2020 at 03:51:40PM -0500, Neal Gompa wrote: > > > > Well, gcc really should have either weak or strong dependency on make too > > > > given that -flto is now used everywhere. > > > > > > The goal of this change seems to include removal of Make as a > > > dependency for the LTO wrapper used by GCC. > > > > That is definitely not something that really happened in GCC, the only > > change that has been done is to make sure that gcc -flto doesn't fail > > because of missing make, but missing make will just mean that the > > compilation will be significantly slower. > > > > My understanding was that the performance of gcc -flto when using something > other than make (e.g. ninja) to build was the same whether or not you have > make installed[1]. Is this correct? That is not correct. -flto=jobserver will only parallelize if a make jobserver is active and thus only when executed from make -jN with + at the start of the command, but -flto=auto uses jobserver if it is detected, otherwise falls back to detecting number of threads to use and parallelizing using that (but it uses make for that parallelization), or say -flto=32 asks for 32 parallel jobs (and again needs make to do that). Jakub _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
