# Building SwiftSyntax and missing \_InternalSwiftSyntaxParser

**URL:** <https://forums.swift.org/t/building-swiftsyntax-and-missing-internalswiftsyntaxparser/19805>\
**Category:** Source Tooling\
**Created:** [January 25, 2019, 9:03am UTC](https://forums.swift.org/t/building-swiftsyntax-and-missing-internalswiftsyntaxparser/19805 "2019-01-25T09:03:49Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![SDGGiesbrecht](https://sea2.discourse-cdn.com/swift/user_avatar/forums.swift.org/sdggiesbrecht/32/4768_2.png) [@SDGGiesbrecht](https://forums.swift.org/u/SDGGiesbrecht)\
**Post date:** [October 2, 2019, 11:31pm UTC](https://forums.swift.org/t/building-swiftsyntax-and-missing-internalswiftsyntaxparser/19805/6 "2019-10-02T23:31:37Z")

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You can find more info on rigging it for macOS in the following thread, but iOS may involve additional hurdles (if it works at all...)

> [@SwiftSyntax with Swift 5.1](https://forums.swift.org/t/swiftsyntax-with-swift-5-1/29051):
>
> Is a semantic version of the SwiftSyntax package for Swift 5.1 coming soon? @akyrtzi While I wait, I have been toying with a fork in an attempt to get a head start on updating client code, but I have been running into trouble. I couldn’t find a swift-5.1-RELEASE tag, so I checked out swift-5.1-branch. Then I de‐GYB‐ified the package. In that state, it builds fine, and the tests pass in the package manager or with the result of generate-xcodeproj. However, if I open the package directly in Xcode…

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