Building SwiftSyntax and missing _InternalSwiftSyntaxParser

Development Source Tooling
1

Hi,

Not sure if that's the right place to ask, but didn't find any better. I'm trying to build SwiftSyntax along the swift build (--swiftsyntax) but encounter a problem. When build swift with this command:

swift/utils/build-script --release-debuginfo --swiftpm --llbuild --build-swift-static-stdlib --swiftsyntax --skip-ios --skip-tvos --skip-watchos --skip-test-cmark --skip-test-swift --skip-test-llbuild --skip-test-swiftpm

it ends with

swift-source/swift-syntax/Sources/SwiftSyntax/SyntaxParser.swift:17:8: error: no such module '_InternalSwiftSyntaxParser'
import _InternalSwiftSyntaxParser
       ^

Error: Building SwiftSyntax failed

Swift source tag swift-5.0-DEVELOPMENT-SNAPSHOT-2019-01-23-a

Am I doing something wrong here? I guess my question is how to build swift-syntax master?

3 Likes
2

SwiftSyntax's master branch uses a new, much faster interface to the compiler that isn't available in Swift's 5.0 branchā€”it's only in Swift's master branch. (Yes, there's already stuff in master that isn't in the betaā€”there wasn't enough time to thoroughly test such a large change.)

Make sure that your compiler and SwiftSyntax repos are on matching branches. The easiest way to do this is by running utils/update-checkout --scheme swift-5.0-branch or utils/update-checkout --scheme master, depending on which one you want to build.

1 Like
3

Great. thanks. Will build master then.

4

You can also use the master development snapshots if you'd prefer not to build the swift compiler.

1 Like
5

I'm trying to use SwiftSyntax on iOS 13 (Simulator) using Xcode 11.0 (11A420a) -- AppStore

I added SwiftSyntax using Xcode's GUI, and it indicates the version is 0.50100.0

-- What's the right tag to use for SwiftSyntax to get exactly the version in my current Xcode? I'm getting the following error:
Could not find or use auto-linked library '_InternalSwiftSyntaxParser'

To be clear: I'm not trying to Build Swift from Source, and my code compiles fine, it just doesn't link!

6

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...)

1 Like