Running Swift build in Terminal leading to "Platform Path" errors

Question

I recently reformatted my Mac. Today I tried building a swift executable via Terminal to start a server-side swift project. Here are the commands I've used:

swift package init --type executable
swift build

Upon running swift build, I got the following errors:

xcrun: error: unable to lookup item 'PlatformPath' from command line tools installation
xcrun: error: unable to lookup item 'PlatformPath' in SDK '/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk'

I'm running Xcode 8.3.1.

Thanks in advance!

l'L'l · Accepted Answer · 2017-04-14 20:50:18Z

116

Try fixing the SDK path (yours appears incorrect):

$ xcrun --show-sdk-path --sdk macosx

You might have this result:

/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk

Switch the default SDK location by invoking:

$ sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer

If that doesn't work then take a look inside the (normal) SDK path:

$ ls -lat /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/

You should see the SDK's within that directory; if not you'll need to download them.

edited Apr 14, 2017 at 20:50

answered Apr 14, 2017 at 20:44

l'L'l

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6 Comments

TrevJonez Over a year ago

for the search engines: this fixed my issue with a kotlin mpp build that was getting stuck with xcrun: error: SDK "iphoneos" cannot be located

Dave Abrahams Over a year ago

I strongly suspect this (which happens on all my macs) is due to homebrew installation, which I just noticed is installing the command-line tools even if Xcode is already installed.

l'L'l Over a year ago

@DaveAbrahams It can happen for various reasons, although that doesn't sound good. I personally use MacPorts, which I find much less invasive than homebrew.

xTwisteDx Over a year ago

@DaveAbrahams I can confirm that. I just went through a similar issue and my environment was setup exactly the same. I had just installed homebrew and I noticed it was installing CLI tools.

Carlos Leonardo Camilo Vargas Over a year ago

Thank you for the answer, it worked for me. And I agree with @DaveAbrahams. The same thing just happened to me because of HOMEBREW INSTALLATION. After installing it I started to run into many problems when running tasks like swift build. It seems that Homebrew installs CommandLineTools in this path /Library/Developer/CommandLineTools (which includes the macOSX.sdk) when we are supposed to have all those stuff in the default /Applications/Xcode.app/Contents/Developer.

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RossP · Accepted Answer · 2019-08-13 15:56:45Z

4

Select a version of Xcode which can run the swift build command by running, for instance:

sudo xcode-select -switch /Applications/Xcode-8.3.3.app

Where Xcode-8.3.3 is the name of your Xcode application

edited Aug 13, 2019 at 15:56

answered Sep 18, 2017 at 9:35

RossP

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