<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div><blockquote type="cite" class=""><div class="">On 16 Nov 2017, at 14:30, Geordie J via swift-dev <<a href="mailto:swift-dev@swift.org" class="">swift-dev@swift.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hello,<div class=""><br class=""></div><div class="">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:</div><div class=""><br class=""></div><div class="">1. Somehow "git checkout swift-4.0.2-RELEASE” doesn’t work. In fact, the commit that tag references (<a href="https://github.com/apple/swift/commit/efb12f4d7a6aa7575333c13fbcdb7782426b130a" class="">https://github.com/apple/swift/commit/efb12f4d7a6aa7575333c13fbcdb7782426b130a</a>) 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.</div><div class=""><br class=""></div><div class="">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?</div></div></div></blockquote><div><br class=""></div>You almost certainly haven't fetched the tag from GitHub successfully. When you run 'git fetch', you'll pull down the configured options as in the .git/config file. For example, I have: </div><div><br class=""></div><div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">[remote "origin"]</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>url = <a href="https://github.com/apple/swift" class="">https://github.com/apple/swift</a></span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>pushurl = no_push</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>fetch = +refs/heads/*:refs/remotes/origin/*</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class="">As a result, it won't explicitly fetch the tag for me. You can do fetch --tags, in which case, it will pull all of them, or you can configure your repository to fetch that specific tag as well (or specify it on the command line, like git fetch origin refs/tags/swift-4.0.2-RELEASE:refs/remotes/origin/swift-4.0.2-RELEASE).</span></div></div><div><br class=""><blockquote type="cite" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">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.</div></div></blockquote></div><div><br class=""></div><div class="">If you are missing some of the required downstream projects, you can run:</div><div class=""><br class=""></div><div class="">./swift/utils/update-checkout --clone</div><div class=""><br class=""></div><div class="">You can explicitly ask to check out a branch (aka 'scheme'):</div><div class=""><br class=""></div><div class="">./swift/utils/update-checkout --scheme swift-4.0-branch</div><div class=""><br class=""></div><div class="">and you can checkout a specific tag:</div><div class=""><br class=""></div><div class="">./swift/utils/update-checkout --tag swift-4.0.2-RELEASE</div><div class=""><br class=""></div><div class="">You can do a clean checkout by using --reset-to-remote, which might help clean your repository state up a little.</div><div class=""><br class=""></div><div class="">I managed to use this to check out the repository, from a base clone of Swift:</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> ./utils/update-checkout --clone --tag swift-4.0.2-RELEASE</span></div></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class="">What version are you at for the LLVM repository after using the above? Mine resolves to:</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(175, 173, 36); background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">2dedb62a0bcb69354e15a54be89fb5dfa63275d2</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(175, 173, 36); background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(175, 173, 36); background-color: rgb(255, 255, 255);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div></span></div></body></html>