Add section to README about testing with toolchains #341
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owenv
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Nov 1, 2020
README.md
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| Building with the toolchain is easy, set the toolchain in xcode: Menu Bar > Xcode > Toolchains > select your toolchain | ||
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| Running the driver requires setting the TOOLCHAINS evironment variable. This tells xcrun which toolchain to use, on darwin xcrun is used to find tools. This variable is the name of the toolchain and not the path (ex: `Swift Development Snapshot`) |
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I think it might be worth mentioning here that TOOLCHAINS will only have an effect if:
- A tool's path hasn't been overridden using one of the SWIFT_DRIVER_*_EXEC environment variables, and
- The driver executable is not installed inside a toolchain
The second point is probably less common though so maybe isn't as important.
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Yeah this is more for running the tests in Xcode, so the second point doesn’t really apply. But yeah I can add some more here. The frontend is probably the only tool that actually gets executed, but TOOLCHAINS is what I was using. It’s worth noting that the SWIFT_DRIVER_ environment variables override TOOLCHAINS.
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@swift-ci please test |
Co-authored-by: Owen Voorhees <owenvoorhees@gmail.com>
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Looks like my bot permissions haven't gone through yet. Someone else want to kick this off for me. Thanks! |
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@swift-ci please test |
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