Hi I use -emit-ast to generate AST files. And I find the AST files are so big. every AST file include the system headers. How can I get AST files without the repeat headers. -- View this message in context: http://clang-developers.42468.n3.nabble.com/emit-ast-header-repeat-tp4042483.html Sent from the Clang Developers mailing list archive at Nabble.com.