Note: I'm building the library as a dependency of my project, I haven't tried to build it from the source directly.
Xcode 9 beta3

I got the same error with Xcode 9 Beta 3
Looks like it has been fixed, but you'll need to apply the changes manually for now.
Thanks for the link @paradoxally!
I wonder why it was closed instead of be landed somewhere in upstream though..
I honestly didn't notice it wasn't on the main repo, my bad.
It has now been merged.
could you please make this change available in cocoapods, TIA!
@HofiOne - it looks like the next release isn't quite ready. You can use the latest code from master by using this line in your Podfile:
pod 'CocoaLumberjack', :git => 'https://github.com/CocoaLumberjack/CocoaLumberjack.git', :branch => 'master'
thanks, than i'll do that till it's not ready
What is not ready for next release? If something is broken, then pulling from master is not really great option.
We will make a release very soon
I don't want to bother, but quite some time passed since latest update. I would like to understand what is the problem with release? Maybe someone can help with that.
Still occurring in Xcode 9.0 beta 5 (9M202q)
Hopefully, 3.2.1 is coming soon...
Waiting for 3.2.1 to get released as well, is there any due date?
Ok, I will make a release tomorrow.
Version 3.2.1 is now available. Sorry for the delay, but hope this makes things easier for you.
Thanks! 馃槏
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I don't want to bother, but quite some time passed since latest update. I would like to understand what is the problem with release? Maybe someone can help with that.