Xcode Tips for iOS Security Researcher

Reduce Disk Space

Note: on your own risk

If don’t do the watchOS related work, delete:

/Applications/Xcode.app/Contents/Developer/Platforms/WatchOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/watchOS.simruntime

If don’t do the tvOS related work, delete:

/Applications/Xcode.app/Contents/Developer/Platforms/AppleTVOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/tvOS.simruntime

If only draw UI by programming, not using storyboard etc, delete(better keep it):

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime

do sim cleaning:
```
xcrun simctl delete unavailable
```

delete unused device support files:

~/Library/Developer/Xcode/iOS DeviceSupport
~/Library/Developer/Xcode/watchOS DeviceSupport

delete DerivedData:
```
~/Library/Developer/Xcode/DerivedData
```

delete CoreSimulator cache:

~/Library/Developer/CoreSimulator/Caches/dyld

Multiple Versions

If don’t care about the UI of Xcode, you don’t need to install two or more Xcode:

copy the XcodeDefault.xctoolchain from the newer version to
```
/Applications/Xcode.app/Contents/Developer/Toolchains/
```
then rename it, and use it later.

copy the SDK to:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs
/Applications/Xcode.app/Contents/Developer/Platforms/DriverKit.platform/Developer/SDKs

and choose the sdk in Xcode’s project config pane.

copy the DeviceSupport to:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport
/Applications/Xcode.app/Contents/Developer/Platforms/AppleTVOS.platform/DeviceSupport
/Applications/Xcode.app/Contents/Developer/Platforms/WatchOS.platform/DeviceSupport

PS

Xcode 16:

/System/Library/AssetsV2/com_apple_MobileAsset_iOSSimulatorRuntime
https://mastodon.social/@_inside/112904004439494121

TODO