install-clang-headers target now installs clang's API headers (corresponding
to its libraries), which is consistent with the install-llvm-headers target.
-- ...
+- In 9.0.0 and later Clang added a new target, clang-cpp, which generates a
+ shared library comprised of all the clang component libraries and exporting
+ the clang C++ APIs. Additionally the build system gained the new
+ "CLANG_LINK_CLANG_DYLIB" option, which defaults Off, and when set to On, will
+ force clang (and clang-based tools) to link the clang-cpp library instead of
+ statically linking clang's components. This option will reduce the size of
+ binary distributions at the expense of compiler performance.
+
+- ...
AST Matchers
------------