Add ZERO_AR_DATE to apple_env #13091
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This variable disables timestamps in archives and binary links in Apple's toolchain. Previously this was set for archives but not the links themselves. Relevant logic in ld64: https://github.com/keith/ld64/blob/86955a06a7e8e0d18ab28e521aa1122bfecd05a9/src/ld/Options.cpp#L4420-L4422
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As part of bazelbuild#13091 dsymtuil started producing these warnings: ``` warning: Timestamp mismatch for bazel-out/ios-x86_64-min11.0-applebin_ios-ios_x86_64-fastbuild-ST-7786d55448f4/bin/Modules/DependencyInjection/DependencyInjection.swiftmodule: 2021-03-05 13:54:33.542331246 and 1969-12-31 16:00:00.000000000 ``` In general we're happily ignoring this to get hermetic outputs instead (it's being compared against the file modification timestamp) This change disables this warning. It appears this feature has been around for at least 3 years swiftlang/llvm-project@2dd9848 so we should be good for all the versions of Xcode we support. Relevant logic: https://github.com/apple/llvm-project/blob/902bb11a46eb82e81d7e8b34450481e143a208b2/llvm/tools/dsymutil/DwarfLinkerForBinary.cpp#L407-L421
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As part of #13091 dsymtuil started producing these warnings: ``` warning: Timestamp mismatch for bazel-out/ios-x86_64-min11.0-applebin_ios-ios_x86_64-fastbuild-ST-7786d55448f4/bin/Modules/DependencyInjection/DependencyInjection.swiftmodule: 2021-03-05 13:54:33.542331246 and 1969-12-31 16:00:00.000000000 ``` In general we're happily ignoring this to get hermetic outputs instead (it's being compared against the file modification timestamp) This change disables this warning. It appears this feature has been around for at least 3 years swiftlang/llvm-project@2dd9848 so we should be good for all the versions of Xcode we support. Relevant logic: https://github.com/apple/llvm-project/blob/902bb11a46eb82e81d7e8b34450481e143a208b2/llvm/tools/dsymutil/DwarfLinkerForBinary.cpp#L407-L421 Closes #13165. PiperOrigin-RevId: 366215825
philwo
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Apr 20, 2021
As part of #13091 dsymtuil started producing these warnings: ``` warning: Timestamp mismatch for bazel-out/ios-x86_64-min11.0-applebin_ios-ios_x86_64-fastbuild-ST-7786d55448f4/bin/Modules/DependencyInjection/DependencyInjection.swiftmodule: 2021-03-05 13:54:33.542331246 and 1969-12-31 16:00:00.000000000 ``` In general we're happily ignoring this to get hermetic outputs instead (it's being compared against the file modification timestamp) This change disables this warning. It appears this feature has been around for at least 3 years swiftlang/llvm-project@2dd9848 so we should be good for all the versions of Xcode we support. Relevant logic: https://github.com/apple/llvm-project/blob/902bb11a46eb82e81d7e8b34450481e143a208b2/llvm/tools/dsymutil/DwarfLinkerForBinary.cpp#L407-L421 Closes #13165. PiperOrigin-RevId: 366215825
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This variable disables timestamps in archives and binary links in
Apple's toolchain. Previously this was set for archives but not the
links themselves.
Relevant logic in ld64: https://github.com/keith/ld64/blob/86955a06a7e8e0d18ab28e521aa1122bfecd05a9/src/ld/Options.cpp#L4420-L4422
Fixes the other half of #10886