Eric Miotto 0869919eca Test: allow different deployment target versions for tests on Darwin ...

Currently we are using the same versions we use to build compiler and
standard library. This is an unnecessary coupling especially when
testing the generation of backdeployed executables for macOS -- here
we have interest in being able to run the tests on previous OSes, not
the compiler itself.

To support this, add new `--darwin-test-deployment-version-<platform>`
flags to build-script, which by default take the same value as the
matching `--darwin-deployment-version-<platform>` ones.

Addresses rdar://156724078

2025-07-31 08:19:13 -07:00

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Test: allow different deployment target versions for tests on Darwin

2025-07-31 08:19:13 -07:00