[PATCH] D138183: [Driver] move FreeBSD header search path management to the driver

[Matt Jacobson via Phabricator via cfe-commits]

mhjacobson created this revision.
mhjacobson added a project: clang.
Herald added subscribers: fedor.sergeev, krytarowski, emaste.
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mhjacobson requested review of this revision.
Herald added subscribers: cfe-commits, MaskRay.

This matches OpenBSD, and it supports Swift's use of clang for its C interop functionality.  Recent changes to Swift use `AddClangSystemIncludeArgs()` to inspect the cc1 args; this doesn't work for platforms where cc1 adds standard include paths implicitly.

Also, clean up InitHeaderSearch, making it clearer which targets manage header search paths in the driver.

Add test.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D138183

Files:
  clang/lib/Driver/ToolChains/FreeBSD.cpp
  clang/lib/Driver/ToolChains/FreeBSD.h
  clang/lib/Lex/InitHeaderSearch.cpp

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