Merge topic 'extend-docs'

0b3e98d9 Help: Don't list debuggable properties in cmake-buildsystem manual.
39d08b92 Help: Add additional hyperlink targets
ef17e293 Help: Document SYSTEM treatment of IMPORTED target INTERFACE_INCLUDE_DIRS

1 files changed, 12 insertions, 4 deletions

diff --git a/Help/manual/cmake-buildsystem.7.rst b/Help/manual/cmake-buildsystem.7.rst
index 91a9b2f..03eb163 100644
--- a/Help/manual/cmake-buildsystem.7.rst
+++ b/Help/manual/cmake-buildsystem.7.rst
@@ -392,10 +392,8 @@ locality of code which creates a target and code which is responsible for
 setting build specifications may make the code more difficult to reason about.
 :manual:`cmake(1)` provides a debugging facility to print the origin of the
 contents of properties which may be determined by dependencies.  The properties
-which can be debugged are :prop_tgt:`INCLUDE_DIRECTORIES`,
-:prop_tgt:`COMPILE_DEFINITIONS`, :prop_tgt:`COMPILE_OPTIONS`,
-:prop_tgt:`AUTOUIC_OPTIONS`, and all properties listed in a
-``COMPATIBLE_INTERFACE_*`` target property:
+which can be debugged are listed in the
+:variable:`CMAKE_DEBUG_TARGET_PROPERTIES` variable documentation:
 
 .. code-block:: cmake
 
@@ -544,6 +542,8 @@ with either ``-DClimbingStats_FROM_BUILD_LOCATION`` or
 ``-DClimbingStats_FROM_INSTALL_LOCATION``.  For more about packages and
 exporting see the :manual:`cmake-packages(7)` manual.
 
+.. _`Include Directories and Usage Requirements`:
+
 Include Directories and Usage Requirements
 ''''''''''''''''''''''''''''''''''''''''''
 
@@ -602,6 +602,14 @@ This is equivalent to appending ``${CMAKE_INSTALL_PREFIX}/include`` to the
 :prop_tgt:`INTERFACE_INCLUDE_DIRECTORIES` of each of the installed
 :prop_tgt:`IMPORTED` targets when generated by :command:`install(EXPORT)`.
 
+When the :prop_tgt:`INTERFACE_INCLUDE_DIRECTORIES` of an
+:ref:`imported target <Imported targets>` is consumed, the entries in the
+property are treated as ``SYSTEM`` include directories, as if they were
+listed in the :prop_tgt:`INTERFACE_SYSTEM_INCLUDE_DIRECTORIES` of the
+dependency. This can result in omission of compiler warnings for headers
+found in those directories.  This behavior for :ref:`imported targets` may
+be controlled with the :prop_tgt:`NO_SYSTEM_FROM_IMPORTED` target property.
+
 If a binary target is linked transitively to a Mac OX framework, the
 ``Headers`` directory of the framework is also treated as a usage requirement.
 This has the same effect as passing the framework directory as an include