Linking CYaml

[yonaskolb]

Hi

This is not directly an issue with YAMS specifically, but I'm having trouble running a CI tool that depends on this due to CYaml. My Package.swift is here https://github.com/yonaskolb/SwagGen

When it's built with swift build I can do .build/debug/SwagGen and it runs fine. But if I move it out of there, and delete build directory, it will not run as libCYaml.dylib is not present and it's referenced by an absolute path:

dyld: Library not loaded: /Users/Yonas/Developer/SwagGen/.build/debug/libCYaml.dylib
  Referenced from: /Users/Yonas/Developer/SwagGen/.build/debug/test/SwagGen
  Reason: image not found

Do you know a way around this? Bundling up CYaml into the app? linking to a global framework instead relative path? Or another solution?

[norio-nomura]

AFAIK, this is limitation of SwiftPM in Swift 3.x.
SwiftPM in Swift 4.0 will support static linking.
FYI: jpsim/SourceKitten#360

[norio-nomura]

I confirmed that SwagGen can be portable by operating @rpath as following:

$ swift build -Xlinker -rpath -Xlinker @executable_path
…
$ install_name_tool -change /Users/norio/github/SwagGen/.build/debug/libCYaml.dylib @rpath/libCYaml.dylib .build/debug/SwagGen
$ mkdir test
$ mv .build/debug/SwagGen .build/debug/libCYaml.dylib test
$ test/SwagGen
Must provide a valid spec

This allows placing libCYaml.dylib at same directory with SwagGen.

[jpsim]

I can't identify anything actionable from this issue, so I'm closing it. Please clarify if it should be re-opened and why. Thanks.