[Linux] (Cherry Pick) Merge pull request #64312 from gwynne/patch-2 #64633
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Add the remaining toolchain-distributed runtime libs to autolink-extract
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MaxDesiatov
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Mar 30, 2023
tbkka
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Mar 30, 2023
MaxDesiatov
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Jun 1, 2023
[5.8] CMake: fix missing `SWIFT_CONCURRENCY_GLOBAL_EXECUTOR` Explanation: Resolves issues with static linking on Linux Risk: Medium, affects Linux builds and top-level CMake declarations. Original PRs: #65795 and #64312 for `main`, #65824 and #64633 for `release/5.9` Reviewed by: @al45tair @drexin @etcwilde Resolves: some of the issues reported in #65097, also resolves #58380 Tests: Added in swiftlang/swift-integration-tests#118 `SWIFT_CONCURRENCY_GLOBAL_EXECUTOR` is defined in `stdlib/cmake/modules/StdlibOptions.cmake`, which is not included during the first pass of evaluation of the root `CMakeLists.txt`. It is available on subsequent evaluations after the value is stored in CMake cache. This led to subtle bugs, where `usr/lib/swift_static/linux/static-stdlib-args.lnk` didn't contain certain flags on clean toolchain builds, but did contain them in incremental builds. Not having these autolinking flags in toolchain builds leads to errors when statically linking executables on Linux. Additionally, since our trivial lit tests previously didn't link Dispatch statically, they didn't expose a bug where `%import-static-libdispatch` substitution had a missing value. To fix that I had to update `lit.cfg` and clean up some of the related path computations to infer a correct substitution value.
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Add the remaining toolchain-distributed runtime libs to autolink-extract. Cherry-pick of #64312.