I want to use FMDB in a swift framework. I follow this tutorial http://programmingthomas.com/blog/2014/7/23/sqlite-in-swift-frameworks but i am getting this error.
Opening import file for module 'Swift': Not a directory
I did all the steps exactly as mentioned in the tutorial.
Also i tried to import the files (not create a seperate framework) but it gives me an error saying that cannot import a non modular header file.
FYI, you can now build framework for FMDB using the master branch, and using the swiftFramework branch that I discussed below is no longer needed. (That branch was created because of a problem in Xcode 6 and 7 that prevented the creation of frameworks that referenced non-modular headers.)
For example, see issue #540 for an example of how to build the frameworks using Carthage. Note, you don't have to use Carthage, but it demonstrates that the swiftFramework branch isn't needed anymore.
I'll keep the original answer below for historical purposes, but it appears that it is no longer applicable. We can build FMDB framework without incident now in Xcode 8.
There is a FMDB branch (see swiftFramework branch) that was created to allow you to create a separate framework for FMDB. For instructions on how to use it, see Using FMDB in a framework discussion at the end of the README for that branch.
Note, this is a separate branch and has not been integrated into the master branch (and probably won't until FMDB 3.0 because it includes some trivial, yet non-backward compatible changes). So, if you don't need it in a framework, I'd suggest just adding the the source to your project directly, rather than separate framework. But if you need a framework, the above branch may help you out.
Related
I have a project that has multiple external dependencies as well as in house ones such as analytics, api, interfaces, that are all integrated with Carthage. I wanted to gradually migrate all of them to SPM starting with the analytics module.
I've restructured my analytics module to a package and integrated it to main my project using SPM (all worked well!). I did the same for all the other modules that also depend on analytics and removed the references from cartfile, .resolved and .private files.
The issue that I'm facing now is that I'm not sure how to remove the integration done by carthage. Even removing the reference from all cartfiles and from framework and libraries, when I run carthage bootstrap it looks like it still fetches that module and adds the framework to my Carthage folder, which I don't want to.
It's the first time I'm using Carthage, so I'm not sure if I might be missing some step when removing just one dependency. If anyone with more experience could help I'd really really appreciate it =]
I've created a sample project illustrating my issue here.
In summary, I'm trying to use a "vendored framework" CocoaPod inside a workspace playground. I think this is possible but requires a bit of fiddling with project settings, and I can't quite figure out what to change.
To observe the issue in the sample project, do the following:
Open CocoaPods-Test/CocoaPods-Test.xcworkspace in Xcode.
Pods should be installed and committed in the repository, but can run pod install if necessary.
Note that the CocoaPods-Test target builds and runs successfully, importing PromiseKit and TwilioChatClient pods.
Navigate to Playground.playground within the workspace.
Note that the playground executes fine while importing PromiseKit but if TwilioChatClient is imported, playground execution fails with "no such module 'TwilioChatClient'".
After reading the following resources:
https://github.com/CocoaPods/CocoaPods/issues/5334
https://github.com/CocoaPods/CocoaPods/issues/5215
https://github.com/CocoaPods/CocoaPods/issues/5563
https://github.com/CocoaPods/swift/issues/3
https://github.com/CocoaPods/CocoaPods/issues/4135
https://github.com/CocoaPods/CocoaPods/issues/2240
https://github.com/CocoaPods/CocoaPods/issues/6669#issuecomment-300188519
https://guides.cocoapods.org/using/troubleshooting.html
https://www.objc.io/issues/6-build-tools/cocoapods-under-the-hood/
I think the issue is probably related to the fact that TwilioChatClient is a "vendored framework" (see its podspec), which means a pod target is not created for it. After reading the above resources, I feel like a solution is within reach, but I can't quite figure it out.
While the sample project here illustrates what I think is the underlying issue, the issue that prompted me to create this example project is just a small bit more complicated.
In my project, I create a framework target containing all my app's code (so it can be imported into my app and also into my playgrounds using app resources). This framework then has pod dependencies, including PromiseKit and TwilioChatClient. The execution error in the playground is different ("Couldn't lookup symbols" instead of "no such module"), as I am not importing the CocoaPods module directly but my framework which uses the pod framework.
I suspect if I can solve the "no such module" issue, it will help me solve my "couldn't lookup symbols" issue.
Finally, this seems like a good opportunity to make an open source contribution others don't seem to have wanted to do (see discussion here). Tangentially, I'd love to contribute but just don't feel like I understand what exactly is going on with CocoaPods, the Xcode build process, etc., after reading about it a bit (e.g. here and here). Any references to help understand the Xcode build process and what CocoaPods is doing under the hood are appreciated. It seems like the resources I've found are either "a very high level overview" (which I get), or "digging through the source code", with not a whole lot in between.
If you must have this work, I came up with a workaround by creating a framework target inside the Pods project which is named the same as the vendor framework, and uses all its headers publicly, using the framework as a sole dependency. I have forked your GH example and linked it here.
It's not the most elegant solution, but it will help you out in a pinch.
UPDATE
Build "fake" framework first, then build app target, then go to playground.
I am trying to streamline my development by creating some re-usable Frameworks which incorporate features I commonly re-use in multiple projects.
However, having setup one of my Frameworks I have encountered a problem, the classes have a dependency on the Firebase framework. Having read the Apple docs it's not recommended to create an Umbrella Framework (one which embeds another) especially if you do not have ownership of the embedded Framework (which I do not).
So the question is:
How can I create a Framework project which allows me to build the Framework without including the dependencies which would create an Umbrella Framework. I presume this is what people like Firebase do because when you add their Framework there are others you have to add to your project as well. I can't quite see how you would configure a project to allow you to build the Framework without errors but not include the dependencies.
For reference I am using the latest Xcode and need to support iOS 8 and above.
Thanks in advance for any thoughts / suggestions on this
For the benefit of anyone who is struggling with the same issue, the answer is much simpler than I had anticipated.
The Frameworks are linked dynamically and simply adding a Framework to the project for your own framework will not cause it to be embedded in the output file and therefore not generate an Umbrella Framework. You don't actually need to do anything. Any Frameworks that are required by your own Framework can be included in your project so that you can compile your own Framework, and will also need to be included in any projects that utilise your Framework.
I'd like to create a framework using Cocoa Touch Framework Project in Swift. However, I'm building this framework on top of another framework called RNCryptor, which is Objective-C based. I've seen various tutorials on how to create a framework in Xcode but none has covered a framework with its own dependency.
I tried to create a framework project and then using CocoaPods to manage its dependencies. However, there are errors appeared: 'Check Dependencies' Unable to run command...'
So the question is: is it possible to create a framework on top of another framework in Xcode. And if so, how?
Frameworks should never embed other frameworks directly. This leads to collisions if the importing project or any other framework also includes that framework. Instead, you need to tell your consumer that they also need to include your dependency. CocoaPods will do this for you automatically, so you should let it. (If you're having trouble with CocoaPods dependencies, you should ask a question about that and get it cleared up. The whole point of CocoaPods is to manage these kinds of things.)
Note that I will be releasing the Swift version of RNCryptor into beta today (or tomorrow, but I really hope today). This version bridges to ObjC and will be the preferred version going forward. (The ObjC version will continue to be available of course for projects that cannot or don't want to include Swift.)
Imagine the following scenario;
I'm developing a cocoa touch framework that requires SomeLibrary (e.g. AFNetworking). My framework is going to be included into someone's project that might require SomeLibrary as well.
How do I accomplish this without running into these nasty duplicate warnings when I include AFNetworking into my framework directly (either via source code or Cocoapods)?
I've tried it with Cocoapods on both projects (my framework, and a test project that includes my framework), but that results in duplicate code warnings as well.
When I don't add AFNetworking into my framework development project, the compiler can't find the required files, which is why I can't build it. I've tried with including AFNetworking's source code directly into the main project, and using the pod, but in both cases the AFNetworking/AFNetworking.h import in the framework project fails.
How can I do this without making a pod out my framework (which isn't really an option)?
I've found this related answer, but I don't know what search path to set for the framework project in order to find a library of the master project;
https://stackoverflow.com/a/23123725/1069487
Any help would be highly appreciated!
You will have to build your framework linked against static library.
You build AFNetworking as a static library (that will give you a .a file as AFNetworking.a)
You build your framework that link against your static library. But be aware that the library won't be embedded in your framework (there is no way to include static library into framework on iOS). Your framework is able to use AFNetworking API because it is linked against it.
any project that use your framework and use AFNetworking methods of your framework need to link with the static library AFNetworking.a that you should provide as a standalone file beside your framework.
See iOS-Framework here for more details : https://github.com/jverkoey/iOS-Framework