rnk added inline comments.
================
Comment at: clang/tools/.gitignore:12
+#==============================================================================#
+# The include-what-you-use project, for when building in-tree.
+include-what-you-use
----------------
LLVM doesn't currently have any .gitignore files for other projects, and they
don't show up in `git status`. What's the difference here?
================
Comment at: clang/tools/CMakeLists.txt:35
+# if include-what-you-use is cloned for building in-tree, add it here.
+if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/include-what-you-use")
+ add_clang_subdirectory(include-what-you-use)
----------------
Maybe we should do `llvm_add_implicit_projects(CLANG)` here instead?
Or do we not want clang/tools to be a project extension point? Would IWYU build
fine if we added it to llvm/projects or llvm/tools? Maybe we should just
recommend that.
https://reviews.llvm.org/D31696
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