Autogen: Add documentation for (CMAKE_)AUTOGEN_PARALLEL

Help/manual/cmake-properties.7.rst

@@ -121,6 +121,7 @@ Properties on Targets
    /prop_tgt/ARCHIVE_OUTPUT_NAME_CONFIG
    /prop_tgt/ARCHIVE_OUTPUT_NAME
    /prop_tgt/AUTOGEN_BUILD_DIR
+   /prop_tgt/AUTOGEN_PARALLEL
    /prop_tgt/AUTOGEN_TARGET_DEPENDS
    /prop_tgt/AUTOMOC_COMPILER_PREDEFINES
    /prop_tgt/AUTOMOC_DEPEND_FILTERS

Help/manual/cmake-qt.7.rst

@@ -96,7 +96,8 @@ following targets by setting the :variable:`CMAKE_AUTOMOC` variable.  The
 options to pass to ``moc``. The :variable:`CMAKE_AUTOMOC_MOC_OPTIONS`
 variable may be populated to pre-set the options for all following targets.
 
-Additional macro names to search for can be added to :prop_tgt:`AUTOMOC_MACRO_NAMES`.
+Additional macro names to search for can be added to
+:prop_tgt:`AUTOMOC_MACRO_NAMES`.
 
 Additional ``moc`` dependency file names can be extracted from source code
 by using :prop_tgt:`AUTOMOC_DEPEND_FILTERS`.

Help/manual/cmake-variables.7.rst

@@ -276,6 +276,7 @@ Variables that Control the Build
    /variable/CMAKE_ANDROID_STL_TYPE
    /variable/CMAKE_ARCHIVE_OUTPUT_DIRECTORY
    /variable/CMAKE_ARCHIVE_OUTPUT_DIRECTORY_CONFIG
+   /variable/CMAKE_AUTOGEN_PARALLEL
    /variable/CMAKE_AUTOMOC
    /variable/CMAKE_AUTOMOC_COMPILER_PREDEFINES
    /variable/CMAKE_AUTOMOC_DEPEND_FILTERS

Help/prop_tgt/AUTOGEN_PARALLEL.rst

@@ -0,0 +1,21 @@
+AUTOGEN_PARALLEL
+----------------
+
+Number of parallel ``moc`` or ``uic`` processes to start when using
+:prop_tgt:`AUTOMOC` and :prop_tgt:`AUTOUIC`.
+
+The custom `<origin>_autogen` target starts a number of threads of which
+each one parses a source file and on demand starts a ``moc`` or ``uic``
+process.  :prop_tgt:`AUTOGEN_PARALLEL` controls how many parallel threads
+(and therefore ``moc`` or ``uic`` processes) are started.
+
+- An empty (or unset) value or the string ``AUTO`` sets the number of
+  threads/processes to the number of physical CPUs on the host system.
+- A positive non zero integer value sets the exact thread/process count.
+- Otherwise a single thread/process is started.
+
+By default :prop_tgt:`AUTOGEN_PARALLEL` is initialized from
+:variable:`CMAKE_AUTOGEN_PARALLEL`.
+
+See the :manual:`cmake-qt(7)` manual for more information on using CMake
+with Qt.

Help/prop_tgt/AUTOMOC.rst

@@ -71,7 +71,8 @@ automoc targets together in an IDE, e.g.  in MSVS.
 The global property :prop_gbl:`AUTOGEN_SOURCE_GROUP` can be used to group
 files generated by :prop_tgt:`AUTOMOC` together in an IDE, e.g.  in MSVS.
 
-Additional macro names to search for can be added to :prop_tgt:`AUTOMOC_MACRO_NAMES`.
+Additional macro names to search for can be added to
+:prop_tgt:`AUTOMOC_MACRO_NAMES`.
 
 Additional ``moc`` dependency file names can be extracted from source code
 by using :prop_tgt:`AUTOMOC_DEPEND_FILTERS`.
@@ -82,5 +83,8 @@ which is controlled by :prop_tgt:`AUTOMOC_COMPILER_PREDEFINES`.
 Source C++ files can be excluded from :prop_tgt:`AUTOMOC` processing by
 enabling :prop_sf:`SKIP_AUTOMOC` or the broader :prop_sf:`SKIP_AUTOGEN`.
 
+The number of parallel ``moc`` processes to start can be modified by
+setting :prop_tgt:`AUTOGEN_PARALLEL`.
+
 See the :manual:`cmake-qt(7)` manual for more information on using CMake
 with Qt.

Help/prop_tgt/AUTOUIC.rst

@@ -33,5 +33,8 @@ autouic targets together in an IDE, e.g. in MSVS.
 Source files can be excluded from :prop_tgt:`AUTOUIC` processing by
 enabling :prop_sf:`SKIP_AUTOUIC` or the broader :prop_sf:`SKIP_AUTOGEN`.
 
+The number of parallel ``uic`` processes to start can be modified by
+setting :prop_tgt:`AUTOGEN_PARALLEL`.
+
 See the :manual:`cmake-qt(7)` manual for more information on using CMake
 with Qt.

Help/variable/CMAKE_AUTOGEN_PARALLEL.rst

@@ -0,0 +1,10 @@
+CMAKE_AUTOGEN_PARALLEL
+----------------------
+
+Number of parallel ``moc`` or ``uic`` processes to start when using
+:prop_tgt:`AUTOMOC` and :prop_tgt:`AUTOUIC`.
+
+This variable is used to initialize the :prop_tgt:`AUTOGEN_PARALLEL` property
+on all the targets.  See that target property for additional information.
+
+By default :variable:`CMAKE_AUTOGEN_PARALLEL` is unset.