<div dir="ltr">I've experienced this multiple times in the past, and I'm seeing it today.<div><br></div><div>Does anyone have thoughts on how this might be root-caused/fixed?</div><div class="gmail_extra">
<br><div class="gmail_quote">On Fri, May 20, 2016 at 7:12 PM, Jordan Rose via swift-dev <span dir="ltr"><<a href="mailto:swift-dev@swift.org" target="_blank">swift-dev@swift.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div>Hypotheses:</div><div>- There are several executables that get linked around the same time (swiftc, swift-ide-test, sil-opt, etc), which leads to swapping.</div><div>- Building the standard library with a debug compiler is really slow.</div><div>- There’s actually a bug here somewhere, possibly due to a newer version of CMake, or possibly due to xcodebuild, or even maybe the OS making bad scheduling decisions.</div><div><br></div><div>For the record, I build with Xcode fairly regularly, but my normal workflow is to generate the Xcode projects, build LLVM, and work in Xcode…but then do a release+asserts build with ninja. I’ll save the Xcode-side build for when I actually want a debug compiler or debug stdlib.</div><div><br></div><div>Jordan</div><div><div class="h5"><div><br></div><br><div><blockquote type="cite"><div>On May 20, 2016, at 14:36, Austin Zheng via swift-dev <<a href="mailto:swift-dev@swift.org" target="_blank">swift-dev@swift.org</a>> wrote:</div><br><div><div dir="ltr">I ran build-script -x a few days ago. It didn't freeze, but it did take several hours to complete (on a late-model 13" MBP).<div><br></div><div>Austin</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, May 20, 2016 at 2:28 PM, Will Stanton via swift-dev <span dir="ltr"><<a href="mailto:swift-dev@swift.org" target="_blank">swift-dev@swift.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Geoffrey,<br>
<br>
Wanted to share I encountered this issue on 5/11.<br>
(Ninja build was+is fine.)<br>
<br>
Maybe the first 8 gyb scripts to run (I’m on a 2012 Mac Mini) are not recognized as having finished…<br>
As you suggest, CPU of xcodebuild, cmake, and python processes were all 0.<br>
<br>
Regards,<br>
Will Stanton<br>
<span><br>
> On May 20, 2016, at 9:44 AM, Geoffrey Wiseman via swift-dev <<a href="mailto:swift-dev@swift.org" target="_blank">swift-dev@swift.org</a>> wrote:<br>
><br>
> Hey,<br>
><br>
> Let me start by saying I just checked out the Swift repos yesterday, and although i’ve looked at a little code and done some of the basic setup steps, this is pretty new to me, and I could easily be doing something wrong.<br>
><br>
> Having said that, I wanted to set up Xcode so I could make a change, but when I run build-script -x, it goes for a while and then just seems to freeze — cpu usage drops off and nothing further seems to happen. I have let it sit for maybe ten minutes, but not hours.<br>
><br>
> It is currently frozen in this section:<br>
> === BUILD AGGREGATE TARGET add_custom_command_target-b646e880e18661860c3d95b53adeee18-ExistentialCollection.swift OF PROJECT Swift WITH CONFIGURATION Debug ===<br>
><br>
> After this line:<br>
> cd /Users/geoffrey/dev/work/opensource/swift/swift/stdlib/public/core && /Users/geoffrey/dev/work/opensource/swift/swift/utils/gyb --test -DunicodeGraphemeBreakPropertyFile=/Users/geoffrey/dev/work/opensource/swift/swift/utils/UnicodeData/GraphemeBreakProperty.txt -DunicodeGraphemeBreakTestFile=/Users/geoffrey/dev/work/opensource/swift/swift/utils/UnicodeData/GraphemeBreakTest.txt -DCMAKE_SIZEOF_VOID_P=8 -o /Users/geoffrey/dev/work/opensource/swift/build/Xcode-DebugAssert/swift-macosx-x86_64/stdlib/public/core/8/ExistentialCollection.swift.tmp ExistentialCollection.swift.gyb<br>
><br>
> If I break and run it again, it seems to do roughly the same thing and freeze again with slightly different information:<br>
><br>
> === BUILD AGGREGATE TARGET add_custom_command_target-c5582f2ec66110e6e1b09a999368ab26-Slice.swift OF PROJECT Swift WITH CONFIGURATION Debug ===<br>
><br>
> …<br>
><br>
> cd /Users/geoffrey/dev/work/opensource/swift/swift/stdlib/public/core && /Users/geoffrey/dev/work/opensource/swift/swift/utils/gyb --test -DunicodeGraphemeBreakPropertyFile=/Users/geoffrey/dev/work/opensource/swift/swift/utils/UnicodeData/GraphemeBreakProperty.txt -DunicodeGraphemeBreakTestFile=/Users/geoffrey/dev/work/opensource/swift/swift/utils/UnicodeData/GraphemeBreakTest.txt -DCMAKE_SIZEOF_VOID_P=8 -o /Users/geoffrey/dev/work/opensource/swift/build/Xcode-DebugAssert/swift-macosx-x86_64/stdlib/public/core/8/Slice.swift.tmp Slice.swift.gyb<br>
><br>
> Any thoughts / suggestions? —verbose-build doesn’t seem to add any useful information. Something I’m doing?<br>
><br>
<br>
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