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I am running low on disk space and checked through a third party utility that among other things that ~/Library/Developer/Xcode/DerivedData directory is taking about 22GB of disk space.
I searched stackoverflow and found this post
How can I safely delete in my ~/Library/Developer/Xcode/DerivedData directory?
The accepted answer to this question suggests that I should not touch / remove folders from this directory. so what I did was
Unless I missed something in that posts answer I want to make sure by asking experienced developers that if I delete all the folders from DerivedData it will not hurt me in building, testing and compiling those projects.
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The place where a large number of files were created this way is the DerivedData folder. Its size can be from a few hundred MB to dozens of GB. Luckily, you're fine with deleting files in this folder. There will be no consequences to this action and the benefit you will gain is more space on your Mac.
As it is user data, no big issue if you delete it completely but it's safer to use 'Reset Content and Settings' option from the menu to delete all of your app data in a Simulator.
DerivedData is a folder located in ~/Library/Developer/Xcode/DerivedData by default. It's the location where Xcode stores all kinds of intermediate build results, generated indexes, etc. DerivedData location can be configured in Xcode preferences (Locations tab).
Yes, you can delete all files from DerivedData sub-folder (Not DerivedData Folder) directly.
That will not affect your project work. Contents of DerivedData folder is generated during the build time and you can delete them if you want. It's not an issue.
The contents of DerivedData will be recreated when you build your projects again.
Xcode8+ Update
From the Xcode8 that removed project option from the window tab so you can still use first way:
Xcode -> Preferences -> location -> click on small arrow button as i explain in my first answer. Xcode7.3 Update For remove particular project's DeriveData you just need to follow the following steps:
Go to Window -> Project:
You can find the list of project and you can either go the DerivedData Folder or you can direct delete individual Project's DerivedData
I am not working on Xcode5 but in 4.6.3 you can find DerivedData folder as found in the below image:
After clicking on Preferences..
You get this window
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I purge derivedData often enough that I have an alias for it. It can fix build problems. I have the following in /Users/Myusername/.bash_profile
alias purgeallbuilds='rm -rf ~/Library/Developer/Xcode/DerivedData/*' Then in terminal, I type purgeallbuilds, and all subfolders of DerivedData are deleted.
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