add script to build Ubuntu cross compilation toolchain #1099
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I think we should add the usage instructions somewhere, maybe at top of the file or as a separate markdown file. |
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added that to the |
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@swift-ci please smoke test |
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@swift-ci please smoke test |
ddunbar
approved these changes
Apr 19, 2017
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Is this something we expect to always have to do, or should there be a bug tacking eliminating the need for it? (i.e., is it something we fix in Swift)
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@ddunbar that's a very good question. I think that's a bug in Swift.
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To cross compile a binary, you will need a cross compilation toolchain which consists of the toolchain itself and an SDK. For example compiling an iPhone binary from your Mac will use
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.3.sdkor similar. If you want to compile a Swift binary for say Ubuntu Xenial on your Mac, you'll need the following pieces of softwareswiftcandclangare able to do that)libswiftCore) for Ubuntu ✅ (that's part of the Swift distribution for Ubuntu).debpackages available from Ubuntu)In other words, all the pieces of software are available for free online, they just need to be assembled in the correct way. This script is an example on how you can do that for Ubuntu Xenial.
Example use:
This should (after quite some time) result in a file called
/tmp/cross-toolchain/ubuntu-xenial-destination.jsonwhich you can hand to SwiftPM using the--destinationflag introduced in #1098 . An example for that iswhich should result in a binary for Linux 😃