[PATCH] D137996: Add support for a backdoor driver option that enables emitting header usage information in JSON to a file

[Akira Hatanaka via Phabricator via cfe-commits]

ahatanak updated this revision to Diff 480101.
ahatanak marked an inline comment as done.
ahatanak added a comment.

Add another environment variable `CC_PRINT_HEADERS_FILTERING`, which can be used to specify whether header information should be filtered or not.

Currently, `CC_PRINT_HEADERS_FORMAT=json, CC_PRINT_HEADERS_FILTERING=on` and `CC_PRINT_HEADERS_FORMAT=textual, CC_PRINT_HEADERS_FILTERING=off` are allowed. `CC_PRINT_HEADERS=1` gets translated to `CC_PRINT_HEADERS_FORMAT=textual, CC_PRINT_HEADERS_FILTERING=off`.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D137996/new/

https://reviews.llvm.org/D137996

Files:
  clang/include/clang/Basic/HeaderIncludeFormatKind.h
  clang/include/clang/Driver/Driver.h
  clang/include/clang/Driver/Options.td
  clang/include/clang/Frontend/DependencyOutputOptions.h
  clang/lib/Driver/Driver.cpp
  clang/lib/Driver/ToolChains/Clang.cpp
  clang/lib/Frontend/HeaderIncludeGen.cpp
  clang/test/Preprocessor/Inputs/print-header-json/header0.h
  clang/test/Preprocessor/Inputs/print-header-json/header1.h
  clang/test/Preprocessor/Inputs/print-header-json/header2.h
  clang/test/Preprocessor/Inputs/print-header-json/system/system0.h
  clang/test/Preprocessor/Inputs/print-header-json/system/system1.h
  clang/test/Preprocessor/Inputs/print-header-json/system/system2.h
  clang/test/Preprocessor/Inputs/print-header-json/system/system3.h
  clang/test/Preprocessor/print-header-json.c
  clang/tools/driver/driver.cpp

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