[swift-dev] build-script -x freezing?

[Jacob Bandes-Storch]

I've experienced this multiple times in the past, and I'm seeing it today.

Does anyone have thoughts on how this might be root-caused/fixed?

On Fri, May 20, 2016 at 7:12 PM, Jordan Rose via swift-dev <
swift-dev at swift.org> wrote:

> Hypotheses:
> - There are several executables that get linked around the same time
> (swiftc, swift-ide-test, sil-opt, etc), which leads to swapping.
> - Building the standard library with a debug compiler is really slow.
> - 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.
>
> 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.
>
> Jordan
>
>
> On May 20, 2016, at 14:36, Austin Zheng via swift-dev <swift-dev at swift.org>
> wrote:
>
> 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).
>
> Austin
>
> On Fri, May 20, 2016 at 2:28 PM, Will Stanton via swift-dev <
> swift-dev at swift.org> wrote:
>
>> Hi Geoffrey,
>>
>> Wanted to share I encountered this issue on 5/11.
>> (Ninja build was+is fine.)
>>
>> Maybe the first 8 gyb scripts to run (I’m on a 2012 Mac Mini) are not
>> recognized as having finished…
>> As you suggest, CPU of xcodebuild, cmake, and python processes were all 0.
>>
>> Regards,
>> Will Stanton
>>
>> > On May 20, 2016, at 9:44 AM, Geoffrey Wiseman via swift-dev <
>> swift-dev at swift.org> wrote:
>> >
>> > Hey,
>> >
>> > 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.
>> >
>> > 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.
>> >
>> > It is currently frozen in this section:
>> > === BUILD AGGREGATE TARGET
>> add_custom_command_target-b646e880e18661860c3d95b53adeee18-ExistentialCollection.swift
>> OF PROJECT Swift WITH CONFIGURATION Debug ===
>> >
>> > After this line:
>> > 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
>> >
>> > If I break and run it again, it seems to do roughly the same thing and
>> freeze again with slightly different information:
>> >
>> > === BUILD AGGREGATE TARGET
>> add_custom_command_target-c5582f2ec66110e6e1b09a999368ab26-Slice.swift OF
>> PROJECT Swift WITH CONFIGURATION Debug ===
>> >
>> > …
>> >
>> > 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
>> >
>> > Any thoughts / suggestions? —verbose-build doesn’t seem to add any
>> useful information. Something I’m doing?
>> >
>>
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>>
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