[SR-3771] error while loading shared libraries: libkqueue.so.0

[aciidgh]

Previous ID	SR-3771
Radar	None
Original Reporter	@aciidb0mb3r
Type	Bug
Status	Resolved
Resolution	Done

Environment

Ubuntu 16.04 LTS

Additional Detail from JIRA

Votes	1
Component/s	libdispatch, Project Infrastructure
Labels	Bug
Assignee	dgrove-oss (JIRA)
Priority	Medium

md5: bd3be70001bfaa1eaa33223eb009833f

relates to:

• SR-3751 libdispatch build script error on Linux (Gentoo and LFS)

Issue Description:

This error appeared in Jan 27 toolchain. Toolchain works fine in Jan 24 toolchain.

$ swift package
/home/ubuntu/swift-DEVELOPMENT-SNAPSHOT-2017-01-27-a-ubuntu16.04/usr/bin/swift-package: error while loading shared libraries: libkqueue.so.0: cannot open shared object file: No such file or directory

[swift-ci]

Comment by David Grove (JIRA)

This may be related to SR-3751. We should be building libkqueue into libdispatch.so; not depending on an external libkqueue.so.

[swift-ci]

Comment by David Grove (JIRA)

Could you point me to the build log for the toolchain that is having the problem. Complete wild guess, but I wonder if the change to build libdispatch.so twice to support building SourceKit on Linux is resulting in a 'dummy' libdispatch.so lying around during part of the build that has an improper dependency on an external libkqueue.so.

[aciidgh]

https://github.com/apple/swift/releases says SHA 52601c0 for swift-DEVELOPMENT-SNAPSHOT-2017-01-27-a so I am guessing it was this job https://ci.swift.org/view/Packages/job/oss-swift-package-linux-ubuntu-16_04/401/

Maybe @shahmishal can help in confirming if thats correct

[swift-ci]

Comment by David Grove (JIRA)

ok, I see the problem. The upstream libkqueue removed the autotools-based build system. When I picked up latest libkqueue to get a different bug fix, building libkqueue embedded in libdispatch broke.

The fix is going to be to switch back to a slightly different version of libkqueue in the git submodule. I will submit a PR to dispatch shortly.

[swift-ci]

Comment by David Grove (JIRA)

Submitted #207 to drop back to most recent libkqueue version that does not have the problematic change to the build system.

[aciidgh]

Awesome! We should get some kind of test somewhere to prevent this breakage in future

[swift-ci]

Comment by David Grove (JIRA)

PR merged to dispatch