[PATCH] D35137: [Driver] Honor -isysroot for Linux targets

[Yen Chi Hsuan via Phabricator via cfe-commits]

yan12125 updated this revision to Diff 107777.
yan12125 added a comment.

Add a test and fix repeated call to defaultSysRoot()


Repository:
  rL LLVM

https://reviews.llvm.org/D35137

Files:
  include/clang/Driver/Driver.h
  lib/Driver/Driver.cpp
  lib/Driver/ToolChains/Linux.cpp
  lib/Driver/ToolChains/Linux.h
  test/Driver/linux-header-search.cpp

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