[swift-dev] Building a swift release

Timothy Wood tjw at me.com
Thu Nov 16 09:53:24 CST 2017

I had to go spelunking in the build scripts to find this, so no idea if it is the proper way, but it seems to work. In a fresh checkout of the swift repo:

	./utils/update-checkout --clone --scheme swift-4.0-branch

This will clone all the needed repos and then check out the right branch.


> On Nov 16, 2017, at 6:30 AM, Geordie J via swift-dev <swift-dev at swift.org> wrote:
> Hello,
> I recently asked about building a particular Swift release and couldn’t find the correct tag. It turns out there are two issues with this:
> 1. Somehow "git checkout swift-4.0.2-RELEASE” doesn’t work. In fact, the commit that tag references (https://github.com/apple/swift/commit/efb12f4d7a6aa7575333c13fbcdb7782426b130a <https://github.com/apple/swift/commit/efb12f4d7a6aa7575333c13fbcdb7782426b130a>) doesn’t seem to exist locally even after running “git fetch”, so I can’t even check out that commit’s parent and cherry-pick the release commit.
> This is spooky enough to make me think I’m doing something wrong: can someone confirm or deny that this release tag really exists outside of GitHub?
> 2. The “stable” branch of llvm (which is automatically referenced when I run utils/update-checkout) isn’t compatible with that tag (its parent commit at least). Frustratingly, checking out "swift-4.0-branch” in both apple/swift and apple/swift-llvm does not build on linux either. This appears to be due to a rename/move of Dwarf.h somewhere along the line.
> Any ideas?
> Thanks,
> Geordie
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