Hi Guillaume, You will need Xcode 8.3 beta 1to build swift, and Xcode requires macOS 10.12.
From: http://adcdownload.apple.com/Developer_Tools/Xcode_8.3_beta/Release_Notes_for_Xcode_8.3_beta.pdf Xcode 8.3 beta requires a Mac running macOS 10.12 beta 3 or later. Thanks, Mishal Shah > On Feb 1, 2017, at 2:48 PM, Guillaume Lessard via swift-dev > <swift-dev@swift.org> wrote: > > Hello, > > Is master supposed to have dropped support for building on 10.11.x? > The previous snapshot I’d built was January 24th, and it was still fine. > > Thanks, > Guillaume Lessard > > _______________________________________________ > swift-dev mailing list > swift-dev@swift.org > https://lists.swift.org/mailman/listinfo/swift-dev _______________________________________________ swift-dev mailing list swift-dev@swift.org https://lists.swift.org/mailman/listinfo/swift-dev