[PATCH] D121992: [Clang] [Driver] Add option to set alternative toolchain path

[Qiu Chaofan via Phabricator via cfe-commits]

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In some cases, we need to set alternative toolchain path other than the default with system (headers, libraries, dynamic linker prefix, `ld` path, etc.), but keep `sysroot` at the same time.

This patch introduces a new option `--overlay-platform-toolchain` to set up such alternative toolchain path.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D121992

Files:
  clang/include/clang/Driver/Driver.h
  clang/include/clang/Driver/Options.td
  clang/lib/Driver/Driver.cpp
  clang/lib/Driver/ToolChains/Gnu.cpp
  clang/lib/Driver/ToolChains/Linux.cpp
  clang/test/Driver/Inputs/powerpc64le-linux-gnu-tree/gcc-11.2.0/include/.keep
  clang/test/Driver/Inputs/powerpc64le-linux-gnu-tree/gcc-11.2.0/lib64/.keep
  clang/test/Driver/gcc-toolchain.cpp

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