[swift-corelibs-dev] libdispatch on Linux, or C++ std::async?

[Brian Croom]

I've noticed that there is a submodule reference to libpwq (see
https://github.com/apple/swift-corelibs-libdispatch/blob/master/.gitmodules).
Is it possible that the submodule hasn't been initialized in your clone?

måndag 30 maj 2016 skrev Brian Gesiak via swift-corelibs-dev <
swift-corelibs-dev at swift.org>:

> Thanks for the quick responses!
>
> I had tried the experimental/foundation branch as well, with no luck.
> Here's the full output from a clean build I just attempted:
> https://gist.github.com/modocache/fcf0c78908b39834448c73ac3f50c110
>
> Prior to the build I removed my entire build directory (which included
> both libdispatch-linux-x86_64 and swift-linux-x86_64) and removed all build
> artifacts from my libdispatch directory (I used `git clean -fxd` -- Make
> tells me there's no target `distclean`).
>
> Looking at the build failure, it appears to be the same one that was
> reported in https://bugs.swift.org/browse/SR-1242. The author of that
> report indicates that
> https://github.com/apple/swift-corelibs-libdispatch/pull/64 fixes the
> problem. My checkout includes the commits from that pull request, but the
> problem remains.
>
> In any case, thanks for all your help! I'll keep trying. Any and all
> advice would be much appreciated!
>
> - Brian Gesiak
>
>
> On Mon, May 30, 2016 at 10:22 AM, Chris Bailey <BAILEYC at uk.ibm.com
> <javascript:_e(%7B%7D,'cvml','BAILEYC at uk.ibm.com');>> wrote:
>
>> I'd certainly recommend picking up the experimental/foundation branch as
>> Rob recommends. Its where we've been doing some additional work to get
>> properly built into the Swift toolchain and to open up some internal APIs
>> needed by Foundation.
>>
>> Whilst I've been building Dispatch either independently or as part of a
>> full toolchain using the buildbot_linux preset (with dispatch and
>> install-dispatch added), I've just checked your build line and its working
>> fine for me. It might be worth cleaning out any partial build you might
>> have of libdispatch in your build directory, and running 'make distclean'
>> from your libdispatch source directory.
>>
>> FYI, we've got some further changes to the experimental/foundation branch
>> of libdispatch with should land in the next couple of days. This fixes some
>> issues with the Swift overlay, and resolves a crash that we've found in the
>> underlying libkqueue implementation.
>>
>> Chris
>>
>>
>>
>>
>> From:        Rob Allen via swift-corelibs-dev <
>> swift-corelibs-dev at swift.org
>> <javascript:_e(%7B%7D,'cvml','swift-corelibs-dev at swift.org');>>
>> To:        Brian Gesiak <modocache at gmail.com
>> <javascript:_e(%7B%7D,'cvml','modocache at gmail.com');>>
>> Cc:        Swift Core Libs <swift-corelibs-dev at swift.org
>> <javascript:_e(%7B%7D,'cvml','swift-corelibs-dev at swift.org');>>
>> Date:        30/05/2016 08:08
>> Subject:        Re: [swift-corelibs-dev] libdispatch on Linux, or C++
>> std::async?
>> Sent by:        swift-corelibs-dev-bounces at swift.org
>> <javascript:_e(%7B%7D,'cvml','swift-corelibs-dev-bounces at swift.org');>
>> ------------------------------
>>
>>
>>
>> Hi,
>>
>> For what it's worth, I can't get the master branch to build either, but I
>> can get the experimental/foundation branch to build.
>>
>> Regards,
>>
>> Rob....
>>
>>
>> On 30 May 2016, at 05:28, Brian Gesiak via swift-corelibs-dev <
>> *swift-corelibs-dev at swift.org*
>> <javascript:_e(%7B%7D,'cvml','swift-corelibs-dev at swift.org');>> wrote:
>>
>> Hello all!
>>
>> I'm working on *https://bugs.swift.org/browse/SR-710*
>> <https://bugs.swift.org/browse/SR-710>, which involves porting SourceKit
>> to Linux. SourceKit contains a handful of references to libdispatch symbols.
>>
>> I have two questions:
>>
>> 1. Could someone share a set of instructions to build
>> swift-corelibs-libdispatch on Linux? I'm using Ubuntu 15.10 and have
>> installed [the dependencies listed here](
>> *https://lists.swift.org/pipermail/swift-corelibs-dev/Week-of-Mon-20151207/000122.html*
>> <https://lists.swift.org/pipermail/swift-corelibs-dev/Week-of-Mon-20151207/000122.html>).
>> I have tried using both `swift/utils/build-script --libdispatch` as well as
>> the instructions in the swift-corelibs-libdispatch `INSTALL` file. Both
>> fail with the [same errors](
>> *https://gist.github.com/modocache/8389d5d64e39ca5a4281500f84e9ce11*
>> <https://gist.github.com/modocache/8389d5d64e39ca5a4281500f84e9ce11>).
>> Any tips?
>>
>> 2. I don't know much about C++, but from what I understand the C++ stdlib
>> provides tools for asynchronous programming. I list SourceKit's uses of
>> libdispatch in a comment on *https://bugs.swift.org/browse/SR-1639*
>> <https://bugs.swift.org/browse/SR-1639>. For those familiar with both
>> C++ and libdispatch: do you think it's a good idea to migrate to C++, at
>> least for now?
>>
>> Any advice would be appreciated. Thanks!!
>>
>> - Brian Gesiak
>>
>>
>> --
>> Development thoughts at *http://akrabat.com* <http://akrabat.com/>
>> Daily Jotter for Mac OS X at *http://dailyjotter.com*
>> <http://dailyjotter.com/>
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>
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