Documentation: add information about builtin includes to FAQ
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174612 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/FAQ.rst b/docs/FAQ.rst
index d4993cd..28d4362 100644
--- a/docs/FAQ.rst
+++ b/docs/FAQ.rst
@@ -51,3 +51,14 @@
``clang -Xclang <option> ...`` to force the driver pass ``<option>`` to
``clang -cc1``.
+I get errors about some headers being missing (``stddef.h``, ``stdard.h``)
+--------------------------------------------------------------------------
+
+Some header files (``stddef.h``, ``stdard.h``, and others) are shipped with
+Clang --- these are called builtin includes. Clang searches for them in a
+directory relative to the location of the ``clang`` binary. If you moved the
+``clang`` binary, you need to move the builtin headers, too.
+
+More information can be found in the :ref:`libtooling_builtin_includes`
+section.
+
diff --git a/docs/LibTooling.rst b/docs/LibTooling.rst
index f0a35d5..a9c24c3 100644
--- a/docs/LibTooling.rst
+++ b/docs/LibTooling.rst
@@ -168,6 +168,9 @@
$ export BD=/path/to/build/llvm
$ $BD/bin/clang-check -p $BD tools/clang/tools/clang-check/ClangCheck.cpp
+
+.. _libtooling_builtin_includes:
+
Builtin includes
^^^^^^^^^^^^^^^^
