Autogen: Add AUTOUIC_SEARCH_PATHS documentation

Help/manual/cmake-properties.7.rst

@@ -121,6 +121,7 @@ Properties on Targets
    /prop_tgt/AUTOMOC
    /prop_tgt/AUTOUIC
    /prop_tgt/AUTOUIC_OPTIONS
+   /prop_tgt/AUTOUIC_SEARCH_PATHS
    /prop_tgt/AUTORCC
    /prop_tgt/AUTORCC_OPTIONS
    /prop_tgt/BINARY_DIR

Help/manual/cmake-qt.7.rst

@@ -104,7 +104,9 @@ be run, and to create rules to execute ``uic`` at the appropriate time.
 
 If a preprocessor ``#include`` directive is found which matches
 ``ui_<basename>.h``, and a ``<basename>.ui`` file exists, then ``uic`` will
-be executed to generate the appropriate file.
+be executed to generate the appropriate file. The ``<basename>.ui`` file is
+searched for first in the vicinity of including file and afterwards in the
+optional :prop_tgt:`AUTOUIC_SEARCH_PATHS` of the target.
 
 The generated generated ``ui_*.h`` files are placed in the
 ``<CMAKE_CURRENT_BINARY_DIR>/<TARGETNAME>_autogen/include`` directory which is

Help/manual/cmake-variables.7.rst

@@ -263,6 +263,7 @@ Variables that Control the Build
    /variable/CMAKE_AUTORCC_OPTIONS
    /variable/CMAKE_AUTOUIC
    /variable/CMAKE_AUTOUIC_OPTIONS
+   /variable/CMAKE_AUTOUIC_SEARCH_PATHS
    /variable/CMAKE_BUILD_RPATH
    /variable/CMAKE_BUILD_WITH_INSTALL_NAME_DIR
    /variable/CMAKE_BUILD_WITH_INSTALL_RPATH

Help/prop_tgt/AUTOUIC.rst

@@ -10,8 +10,13 @@ Qt4 and Qt5 are supported.
 
 When this property is ``ON``, CMake will scan the source files at build time
 and invoke ``uic`` accordingly.  If an ``#include`` statement like
-``#include "ui_foo.h"`` is found in ``foo.cpp``, a ``foo.ui`` file is
-expected next to ``foo.cpp``, and ``uic`` is run on the ``foo.ui`` file.
+``#include "ui_foo.h"`` is found in ``source.cpp``, a ``foo.ui`` file is
+searched for first in the vicinity of ``source.cpp`` and afterwards in the
+optional :prop_tgt:`AUTOUIC_SEARCH_PATHS` of the target.
+``uic`` is run on the ``foo.ui`` file to generate ``ui_foo.h`` in the directory
+``<CMAKE_CURRENT_BINARY_DIR>/<TARGETNAME>_autogen/include``,
+which is added to the target's :prop_tgt:`INCLUDE_DIRECTORIES` automatically.
+
 This property is initialized by the value of the :variable:`CMAKE_AUTOUIC`
 variable if it is set when a target is created.
 

Help/prop_tgt/AUTOUIC_OPTIONS.rst

 AUTOUIC_OPTIONS
 ---------------
 
-Additional options for uic when using :prop_tgt:`AUTOUIC`
+Additional options for ``uic`` when using :prop_tgt:`AUTOUIC`
 
 This property holds additional command line options which will be used when
 ``uic`` is executed during the build via :prop_tgt:`AUTOUIC`, i.e. it is

Help/prop_tgt/AUTOUIC_SEARCH_PATHS.rst

+AUTOUIC_SEARCH_PATHS
+--------------------
+
+Search path list used by :prop_tgt:`AUTOUIC` to find included
+``.ui`` files.
+
+This property is initialized by the value of the
+:variable:`CMAKE_AUTOUIC_SEARCH_PATHS` variable if it is set
+when a target is created. Otherwise it is empty.
+
+See the :manual:`cmake-qt(7)` manual for more information on using CMake
+with Qt.

Help/variable/CMAKE_AUTOUIC_SEARCH_PATHS.rst

+CMAKE_AUTOUIC_SEARCH_PATHS
+--------------------------
+
+Search path list used by :variable:`CMAKE_AUTOUIC` to find included
+``.ui`` files.
+
+This variable is used to initialize the :prop_tgt:`AUTOUIC_SEARCH_PATHS`
+property on all the targets. See that target property for additional
+information.
+
+By default it is empty.