[5.9 🍒][Explicit Modules] Handle re-mapped platform versions when specifying SDK-aligned -clang-target on Darwin platforms
#1395
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SDK-aligned `-clang-target` on Darwin platforms Resolves rdar://108288193
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xymus
approved these changes
Jul 6, 2023
nkcsgexi
approved these changes
Jul 10, 2023
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Cherry-pick of #1394
• Release: 5.9
• Explanation: #1322 introduced functionality to the driver where
-clang-targetfor all Clang module dependencies is set to the target SDK deployment target on Darwin platforms. The original implementation missed the case of targeting platforms with an SDK-specified OS version re-map, causing incorrect versions to be used in those cases, in Explicit Module Builds.• Reviewed by: @xymus
• Scope of Issue: Explicitly-built module dependencies of builds targeting platforms with a version remap (e.g. MacCatalyst) use incorrect/unexpected target OS versions for Clang module dependencies.
• Risk: Low. This change modifies code that does not run on default (Implicit Modules) compilation code-path, and the change itself is straight-forward and small, for affected code-paths.
• Testing: Automated tests added to the driver test suite.
Resolves rdar://108288193