Artem Dergachev 9f15f1f0f3 [analyzer] Teach scan-build how to pass -analyzer-config to xcodebuild.
The scan-build tool assists various build systems with applying the Clang
static analyzer alongside compilation. It offers explicit integration with
Xcode's native build system aka `xcodebuild`; in this case it doesn't
substitute the compiler, but instead kindly asks xcodebuild to enable
the static analyzer, something that it already knows how to do.

Make sure scan-build's `-analyzer-config` flag (which translates to a
similar `clang -cc1 -analyzer-config` flag) is properly translated
to Xcode build system. This unbreaks a few related features such as
checker silencing.

No LIT tests because they'd require an Xcode installation on your system.
2023-03-28 14:34:28 -07:00
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