Re: Call for Foundation-supported Project Ideas
- Reply: Ed Maste : "Re: Call for Foundation-supported Project Ideas"
- In reply to: Ed Maste : "Re: Call for Foundation-supported Project Ideas"
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Date: Mon, 29 Nov 2021 04:36:12 UTC
On Sun, Nov 28, 2021 at 10:17:00PM -0500, Ed Maste wrote: > On Sun, 28 Nov 2021 at 19:37, Steve Kargl > <firstname.lastname@example.org> wrote: > > > > It's certainly not the latest and greatest, > > CPU: Intel(R) Core(TM)2 Duo CPU T7250 @ 2.00GHz (1995.04-MHz K8-class CPU) > > If you're content to use a compiler from a package you can save a lot > of time by building with `CROSS_TOOLCHAIN=llvm13` and > `WITHOUT_TOOLCHAIN=yes`. Or, instead of WITHOUT_TOOLCHAIN perhaps > `WITHOUT_CLANG=yes`, `WITHOUT_LLD=yes` and `WITHOUT_LLDB=yes`. > > Cirrus-CI builds CROSS_TOOLCHAIN and WITHOUT_TOOLCHAIN to reduce build > time significantly, given that the vast majority of CI build/test runs > are not targeting compiler changes. And therein lies the rub. Cirrus-CI skirts the issue with the slowing down of builds, so developers don't see the problem. I suspect developers also tend to use ccache or meta_mode. Reported "buildworld times" are not really "buildworld times" but more like partial "buildworld times". Unfortunately, I've wasted a weekend trying to get an up-to-date to chase down what may be a bug in (1) how the kernel delivers signals to a thread; (2) a problem with libthr; or a problem with asynchronous IO in gfortran. My REAL buildworld will finish eventually, so I'l be able to look more closely at the issue. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103444 -- Steve