[swift-users] build-script error

[Jeff Ramsey]

I followed directions here to clone the compiler source and build it on
Ubuntu 14.04:

https://github.com/apple/swift/blob/master/README.md

All required packages seem to haven been installed successfully per the
README.  When I get to the build step, the following build-script command
generates the errors below it.  Have I missed something simple?  Thanks.

Jeff

~/swift$ utils/build-script -t
Traceback (most recent call last):
  File "utils/build-script", line 1848, in <module>
    sys.exit(main())
  File "utils/build-script", line 1844, in main
    return main_normal()
  File "utils/build-script", line 1053, in main_normal
    default=StdlibDeploymentTarget.host_target().name)
AttributeError: 'NoneType' object has no attribute 'name'
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