On 29/10/2019 15:40, Simon Richter wrote: > We could probably shave off another two or three minutes of build time if > we could make sure that we always make progress on the critical path. The > dependency generation as a side effect pulls all the sources and headers > into cache, which reduces the effects of I/O latency a bit during > compilation, so parallelizing with more than the number of threads you > actually have is probably counterproductive.
Hi, Another idea: use precompiled headers. I experimented some years ago with cotire for CMake on KiCad sources and it gave quite promising results. Since I didn't maintain this code it's probably useless by now given how new stuff has been added to KiCad tree but the savings in build time by header precompilation will be still IMHO quite significant. As for MSYS's GCC speed - personally I use Visual Studio under Windows, not only because of faster build time but also because of a debugger that actually works... As a side comment: $ make -j12 (latest KiCad master, i7-9750H, 32 GB DDR4 @ 2666 MHz, Ubuntu 19.04) real 7m59.758s user 86m44.231s sys 5m9.724s Citing the classic: "not great, not terrible" ;-) Cheers, Tom _______________________________________________ Mailing list: https://launchpad.net/~kicad-developers Post to : kicad-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
