I'm working on a Swift 2.3 project using Xcode Version 8.0 (8A218a), I use Cocoapods 1.0.1 for dependency management.
I don't know what happens but every time I hit build or build & run, wether there is a modification in a file or not, the compiler will take 2-3 minutes to recompile what seems to be all the sources files of my project.
I found this thread on Apple's forum (https://forums.developer.apple.com/thread/44406) that doesn't solve my issue (I applied Compiler Default settings to both my project and the Pods sub-project).
I have no idea what's happening and it's driving me crazy. Any lead welcome :)
Thanks!
Cyril
Related
I am posting this after reading many similar posts on here regarding this issue and none of the solutions that worked for other people not working...
Xcode Version 8.3.3 (8E3004b)
Swift 3.1
Things I tried
Deleting Derived Data folder
Deleting Workspace File
Cleaning Build Folder
Cleaning Build
Reinstalled Xcode (after complete removal)
I also looked for Swift Issues:
Removed all concatenating strings
Cleaned up Swift arrays and dictionaries
Added Whole module optimizations
This all started happening after last Xcode update of 8.3.3. My project was compiling within seconds and now I have to wait at least 15 mins for it to index, then 5 minutes to compile after everything I change even something small in code.
When Building, it get stuck in "Compiling Swift source files". Is there way for me to look in to where it is actually getting stuck?
BIG UPDATE
I tried pretty much everything. Read every article, post, ect. NOTHING worked. My project was created right after 10.0.
Solution
Creating a new project and copying each file worked! It used to take 8-9 minuted to build. Now less than 2 seconds!
Apple knows about this problem, and says that Xcode 9 beta will perform much better. Note that if you don't want to update to Swift 4, you can continue compiling in Swift 3 mode using Xcode 9. The big limitation is that you won't be able to submit your project to the App Store until Xcode 9 goes final.
Also, Xcode 9 contains a new build system. You don't get it by default: you have to turn it on for this project. Choose File > Project Settings and switch the pop-up menu to New Build System (Preview). This is experimental, but it will be the default build system eventually, so it would be interesting to know whether this makes an appreciable difference.
If you don't want to update to Xcode 9 beta, you will just have to do a binary search: comment out all your code and start adding it back, piece by piece, until you find that piece that's causing the trouble.
The best way to work this out is to find what out what the build is doing while compiling your code. This is a really useful tool to use: https://github.com/RobertGummesson/BuildTimeAnalyzer-for-Xcode
When you run this tool it will show you what methods are taking the longest to compile, and then you fix those. Once you have done that, you can also try the answer I gave here to decrease the build times: Extremely long compilation times with Swift in Xcode
I have a slight issue when build my Xcode project, get tones of warning after update pod. It looks like this
Already search the whole site here but still no luck. it doesn't affect the project but it is quite annoying. Anyone could help?
It probably means their binary file has non-aligned pointer when they compile their code. In those cases the alignment basically defaults to 1 byte and hypothetically might impact performance.
After updating to Xcode 8.3 public release I am still seeing this error, so Google might need to compile their static library with different settings to make it go away.
Got this response from firebase support:
This is a known issue with Xcode 8.3 beta, so it might be a beta thing
and Xcode being extra verbose. It works well though with 8.2.1 so I
recommend temporarily use it to avoid the warnings or ignore the
warnings on 8.3 beta if it does not affect your app.
This has been fixed in Firebase 3.16.0 (Firebase Core 3.6 + Firebase Analytics 3.8.0)
guys, it is all fixed now. Tested it all myself on two projects. You got to go to the correct directory of your project so that your pod spec file is visible to your command line commands, run
pod update
and see it all fixed and working properly!
These problems are addressed, and likely fixed, with release 3.16.0.
I have a slight issue when build my Xcode project, get tones of warning after update pod. It looks like this
Already search the whole site here but still no luck. it doesn't affect the project but it is quite annoying. Anyone could help?
It probably means their binary file has non-aligned pointer when they compile their code. In those cases the alignment basically defaults to 1 byte and hypothetically might impact performance.
After updating to Xcode 8.3 public release I am still seeing this error, so Google might need to compile their static library with different settings to make it go away.
Got this response from firebase support:
This is a known issue with Xcode 8.3 beta, so it might be a beta thing
and Xcode being extra verbose. It works well though with 8.2.1 so I
recommend temporarily use it to avoid the warnings or ignore the
warnings on 8.3 beta if it does not affect your app.
This has been fixed in Firebase 3.16.0 (Firebase Core 3.6 + Firebase Analytics 3.8.0)
guys, it is all fixed now. Tested it all myself on two projects. You got to go to the correct directory of your project so that your pod spec file is visible to your command line commands, run
pod update
and see it all fixed and working properly!
These problems are addressed, and likely fixed, with release 3.16.0.
I have a slight issue when build my Xcode project, get tones of warning after update pod. It looks like this
Already search the whole site here but still no luck. it doesn't affect the project but it is quite annoying. Anyone could help?
It probably means their binary file has non-aligned pointer when they compile their code. In those cases the alignment basically defaults to 1 byte and hypothetically might impact performance.
After updating to Xcode 8.3 public release I am still seeing this error, so Google might need to compile their static library with different settings to make it go away.
Got this response from firebase support:
This is a known issue with Xcode 8.3 beta, so it might be a beta thing
and Xcode being extra verbose. It works well though with 8.2.1 so I
recommend temporarily use it to avoid the warnings or ignore the
warnings on 8.3 beta if it does not affect your app.
This has been fixed in Firebase 3.16.0 (Firebase Core 3.6 + Firebase Analytics 3.8.0)
guys, it is all fixed now. Tested it all myself on two projects. You got to go to the correct directory of your project so that your pod spec file is visible to your command line commands, run
pod update
and see it all fixed and working properly!
These problems are addressed, and likely fixed, with release 3.16.0.
One of the long anticipated features of Swift 1.2/Xcode 6.3 is incremental builds. They worked fine for me until recently, but now almost every time I change even a single line of code it does full rebuild.
I tried restarting Xcode, computer, cleaning derived data, but to no avail. Googling doesn't seem to reveal anything.
Does anyone else have this problem? How do I fix it?
I think that this is what you searching for
I am not this is a source of the problem. According to https://developer.apple.com
Swift Performance
A new compilation mode has been introduced for Swift called Whole Module Optimization. This option optimizes all of the files in a target together and enables better performance (at the cost of increased compile time). The new flag can be enabled in Xcode using the “Whole Module Optimization” build setting or by using the swiftc command line tool with the flag -whole-module-optimization. (18603795)