1 files changed, 41 insertions, 0 deletions
diff --git a/Help/command/include_directories.rst b/Help/command/include_directories.rst
new file mode 100644
index 0000000..fe281c3
--- /dev/null
+++ b/Help/command/include_directories.rst
@@ -0,0 +1,41 @@
+include_directories
+-------------------
+
+Add include directories to the build.
+
+.. code-block:: cmake
+
+  include_directories([AFTER|BEFORE] [SYSTEM] dir1 [dir2 ...])
+
+Add the given directories to those the compiler uses to search for
+include files.  Relative paths are interpreted as relative to the
+current source directory.
+
+The include directories are added to the :prop_dir:`INCLUDE_DIRECTORIES`
+directory property for the current ``CMakeLists`` file.  They are also
+added to the :prop_tgt:`INCLUDE_DIRECTORIES` target property for each
+target in the current ``CMakeLists`` file.  The target property values
+are the ones used by the generators.
+
+By default the directories specified are appended onto the current list of
+directories.  This default behavior can be changed by setting
+:variable:`CMAKE_INCLUDE_DIRECTORIES_BEFORE` to ``ON``.  By using
+``AFTER`` or ``BEFORE`` explicitly, you can select between appending and
+prepending, independent of the default.
+
+If the ``SYSTEM`` option is given, the compiler will be told the
+directories are meant as system include directories on some platforms.
+Signalling this setting might achieve effects such as the compiler
+skipping warnings, or these fixed-install system files not being
+considered in dependency calculations - see compiler docs.
+
+Arguments to ``include_directories`` may use "generator expressions" with
+the syntax "$<...>".  See the :manual:`cmake-generator-expressions(7)`
+manual for available expressions.  See the :manual:`cmake-buildsystem(7)`
+manual for more on defining buildsystem properties.
+
+.. note::
+
+  Prefer the :command:`target_include_directories` command to add include
+  directories to individual targets and optionally propagate/export them
+  to dependents.