diff options
Diffstat (limited to 'Help/command')
| -rw-r--r-- | Help/command/list.rst | 169 | ||||
| -rw-r--r-- | Help/command/project.rst | 23 |
2 files changed, 143 insertions, 49 deletions
diff --git a/Help/command/list.rst b/Help/command/list.rst index f6b75bc..e6a7069 100644 --- a/Help/command/list.rst +++ b/Help/command/list.rst @@ -1,68 +1,151 @@ list ---- +.. only:: html + + .. contents:: + List operations. +The list subcommands ``APPEND``, ``INSERT``, ``FILTER``, ``REMOVE_AT``, +``REMOVE_ITEM``, ``REMOVE_DUPLICATES``, ``REVERSE`` and ``SORT`` may create +new values for the list within the current CMake variable scope. Similar to +the :command:`set` command, the LIST command creates new variable values in +the current scope, even if the list itself is actually defined in a parent +scope. To propagate the results of these operations upwards, use +:command:`set` with ``PARENT_SCOPE``, :command:`set` with +``CACHE INTERNAL``, or some other means of value propagation. + +.. note:: + + A list in cmake is a ``;`` separated group of strings. To create a + list the set command can be used. For example, ``set(var a b c d e)`` + creates a list with ``a;b;c;d;e``, and ``set(var "a b c d e")`` creates a + string or a list with one item in it. (Note macro arguments are not + variables, and therefore cannot be used in LIST commands.) + +.. note:: + + When specifying index values, if ``<element index>`` is 0 or greater, it + is indexed from the beginning of the list, with 0 representing the + first list element. If ``<element index>`` is -1 or lesser, it is indexed + from the end of the list, with -1 representing the last list element. + Be careful when counting with negative indices: they do not start from + 0. -0 is equivalent to 0, the first list element. + +Capacity and Element access +^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +LENGTH +"""""" + :: list(LENGTH <list> <output variable>) - list(GET <list> <element index> [<element index> ...] - <output variable>) + +Returns the list's length. + +GET +""" + +:: + + list(GET <list> <element index> [<element index> ...] <output variable>) + +Returns the list of elements specified by indices from the list. + +Search +^^^^^^ + +FIND +"""" + +:: + + list(FIND <list> <value> <output variable>) + +Returns the index of the element specified in the list or -1 +if it wasn't found. + +Modification +^^^^^^^^^^^^ + +APPEND +"""""" + +:: + list(APPEND <list> [<element> ...]) + +Appends elements to the list. + +FILTER +"""""" + +:: + list(FILTER <list> <INCLUDE|EXCLUDE> REGEX <regular_expression>) - list(FIND <list> <value> <output variable>) + +Includes or removes items from the list that match the mode's pattern. +In ``REGEX`` mode, items will be matched against the given regular expression. + +For more information on regular expressions see also the +:command:`string` command. + +INSERT +"""""" + +:: + list(INSERT <list> <element_index> <element> [<element> ...]) + +Inserts elements to the list to the specified location. + +REMOVE_ITEM +""""""""""" + +:: + list(REMOVE_ITEM <list> <value> [<value> ...]) + +Removes the given items from the list. + +REMOVE_AT +""""""""" + +:: + list(REMOVE_AT <list> <index> [<index> ...]) - list(REMOVE_DUPLICATES <list>) - list(REVERSE <list>) - list(SORT <list>) -``LENGTH`` will return a given list's length. +Removes items at given indices from the list. -``GET`` will return list of elements specified by indices from the list. +REMOVE_DUPLICATES +""""""""""""""""" -``APPEND`` will append elements to the list. +:: -``FILTER`` will include or remove items from the list that match the -mode's pattern. -In ``REGEX`` mode, items will be matched against the given regular expression. -For more information on regular expressions see also the :command:`string` -command. + list(REMOVE_DUPLICATES <list>) -``FIND`` will return the index of the element specified in the list or -1 -if it wasn't found. +Removes duplicated items in the list. + +Sorting +^^^^^^^ + +REVERSE +""""""" -``INSERT`` will insert elements to the list to the specified location. +:: -``REMOVE_AT`` and ``REMOVE_ITEM`` will remove items from the list. The -difference is that ``REMOVE_ITEM`` will remove the given items, while -``REMOVE_AT`` will remove the items at the given indices. + list(REVERSE <list>) -``REMOVE_DUPLICATES`` will remove duplicated items in the list. +Reverses the contents of the list in-place. -``REVERSE`` reverses the contents of the list in-place. +SORT +"""" -``SORT`` sorts the list in-place alphabetically. +:: + + list(SORT <list>) -The list subcommands ``APPEND``, ``INSERT``, ``FILTER``, ``REMOVE_AT``, -``REMOVE_ITEM``, ``REMOVE_DUPLICATES``, ``REVERSE`` and ``SORT`` may create new -values for the list within the current CMake variable scope. Similar to the -:command:`set` command, the LIST command creates new variable values in the -current scope, even if the list itself is actually defined in a parent -scope. To propagate the results of these operations upwards, use -:command:`set` with ``PARENT_SCOPE``, :command:`set` with -``CACHE INTERNAL``, or some other means of value propagation. -NOTES: A list in cmake is a ``;`` separated group of strings. To create a -list the set command can be used. For example, ``set(var a b c d e)`` -creates a list with ``a;b;c;d;e``, and ``set(var "a b c d e")`` creates a -string or a list with one item in it. (Note macro arguments are not -variables, and therefore cannot be used in LIST commands.) - -When specifying index values, if ``<element index>`` is 0 or greater, it -is indexed from the beginning of the list, with 0 representing the -first list element. If ``<element index>`` is -1 or lesser, it is indexed -from the end of the list, with -1 representing the last list element. -Be careful when counting with negative indices: they do not start from -0. -0 is equivalent to 0, the first list element. +Sorts the list in-place alphabetically. diff --git a/Help/command/project.rst b/Help/command/project.rst index ac71d7a..e46dd69 100644 --- a/Help/command/project.rst +++ b/Help/command/project.rst @@ -9,6 +9,7 @@ Sets project details such as name, version, etc. and enables languages. project(<PROJECT-NAME> [VERSION <major>[.<minor>[.<patch>[.<tweak>]]]] [DESCRIPTION <project-description-string>] + [HOMEPAGE_URL <url-string>] [LANGUAGES <language-name>...]) Sets the name of the project and stores the name in the @@ -41,9 +42,18 @@ in variables Variables corresponding to unspecified versions are set to the empty string (if policy :policy:`CMP0048` is set to ``NEW``). -If optional ``DESCRIPTION`` is given, then additional :variable:`PROJECT_DESCRIPTION` -variable will be set to its argument. The argument must be a string with short -description of the project (only a few words). +If the optional ``DESCRIPTION`` is given, then :variable:`PROJECT_DESCRIPTION` +and :variable:`<PROJECT-NAME>_DESCRIPTION` will be set to its argument. +The description is expected to be a relatively short string, usually no more +than a few words. + +The optional ``HOMEPAGE_URL`` sets the analogous variables +:variable:`PROJECT_HOMEPAGE_URL` and :variable:`<PROJECT-NAME>_HOMEPAGE_URL`. +When this option is given, the URL provided should be the canonical home for +the project. + +Note that the description and homepage URL may be used as defaults for +things like packaging meta-data, documentation, etc. Optionally you can specify which languages your project supports. Example languages include ``C``, ``CXX`` (i.e. C++), ``CUDA``, @@ -64,9 +74,10 @@ literal, direct call to the :command:`project` command; loading one through the :command:`include` command is not sufficient. If no such call exists CMake will implicitly add one to the top that enables the default languages (``C`` and ``CXX``). The name of the project set in -the top level CMakeLists.txt file is available from the -:variable:`CMAKE_PROJECT_NAME` variable and its description from -:variable:`CMAKE_PROJECT_DESCRIPTION`. +the top level ``CMakeLists.txt`` file is available from the +:variable:`CMAKE_PROJECT_NAME` variable, its description from +:variable:`CMAKE_PROJECT_DESCRIPTION` and its homepage URL from +:variable:`CMAKE_PROJECT_HOMEPAGE_URL`. .. note:: Call the :command:`cmake_minimum_required` command at the beginning |