diff options
Diffstat (limited to 'Help')
| -rw-r--r-- | Help/command/message.rst | 13 | ||||
| -rw-r--r-- | Help/manual/cmake-variables.7.rst | 2 | ||||
| -rw-r--r-- | Help/manual/cmake.1.rst | 10 | ||||
| -rw-r--r-- | Help/release/dev/feature-CMAKE_MESSAGE_CONTEXT | 5 | ||||
| -rw-r--r-- | Help/variable/CMAKE_MESSAGE_CONTEXT.rst | 62 | ||||
| -rw-r--r-- | Help/variable/CMAKE_MESSAGE_CONTEXT_SHOW.rst | 15 |
6 files changed, 106 insertions, 1 deletions
diff --git a/Help/command/message.rst b/Help/command/message.rst index 1acf30a..beb820a 100644 --- a/Help/command/message.rst +++ b/Help/command/message.rst @@ -63,11 +63,22 @@ To make a log level persist between CMake runs, the :variable:`CMAKE_MESSAGE_LOG_LEVEL` variable can be set instead. Note that the command line option takes precedence over the cache variable. -Messages of log levels ``NOTICE`` and below will also have each line preceded +Messages of log levels ``NOTICE`` and below will have each line preceded by the content of the :variable:`CMAKE_MESSAGE_INDENT` variable (converted to a single string by concatenating its list items). For ``STATUS`` to ``TRACE`` messages, this indenting content will be inserted after the hyphens. +Messages of log levels ``NOTICE`` and below can also have each line preceded +with context of the form ``[some.context.example]``. The content between the +square brackets is obtained by converting the :variable:`CMAKE_MESSAGE_CONTEXT` +list variable to a dot-separated string. The message context will always +appear before any indenting content but after any automatically added leading +hyphens. By default, message context is not shown, it has to be explicitly +enabled by giving the :manual:`cmake <cmake(1)>` ``--log-context`` +command-line option or by setting the :variable:`CMAKE_MESSAGE_CONTEXT_SHOW` +variable to true. See the :variable:`CMAKE_MESSAGE_CONTEXT` documentation for +usage examples. + CMake Warning and Error message text displays using a simple markup language. Non-indented text is formatted in line-wrapped paragraphs delimited by newlines. Indented text is considered pre-formatted. diff --git a/Help/manual/cmake-variables.7.rst b/Help/manual/cmake-variables.7.rst index 782a0f0..cad0df6 100644 --- a/Help/manual/cmake-variables.7.rst +++ b/Help/manual/cmake-variables.7.rst @@ -204,6 +204,8 @@ Variables that Change Behavior /variable/CMAKE_LINK_DIRECTORIES_BEFORE /variable/CMAKE_MFC_FLAG /variable/CMAKE_MAXIMUM_RECURSION_DEPTH + /variable/CMAKE_MESSAGE_CONTEXT + /variable/CMAKE_MESSAGE_CONTEXT_SHOW /variable/CMAKE_MESSAGE_INDENT /variable/CMAKE_MESSAGE_LOG_LEVEL /variable/CMAKE_MODULE_PATH diff --git a/Help/manual/cmake.1.rst b/Help/manual/cmake.1.rst index 08b7534..71110d1 100644 --- a/Help/manual/cmake.1.rst +++ b/Help/manual/cmake.1.rst @@ -214,6 +214,16 @@ Options For backward compatibility reasons, ``--loglevel`` is also accepted as a synonym for this option. +``--log-context`` + Enable the :command:`message` command outputting context attached to each + message. + + This option turns on showing context for the current CMake run only. + To make showing the context persistent for all subsequent CMake runs, set + :variable:`CMAKE_MESSAGE_CONTEXT_SHOW` as a cache variable instead. + When this command line option is given, :variable:`CMAKE_MESSAGE_CONTEXT_SHOW` + is ignored. + ``--debug-trycompile`` Do not delete the :command:`try_compile` build tree. Only useful on one :command:`try_compile` at a time. diff --git a/Help/release/dev/feature-CMAKE_MESSAGE_CONTEXT b/Help/release/dev/feature-CMAKE_MESSAGE_CONTEXT index eb24e20..a6a5c71 100644 --- a/Help/release/dev/feature-CMAKE_MESSAGE_CONTEXT +++ b/Help/release/dev/feature-CMAKE_MESSAGE_CONTEXT @@ -4,3 +4,8 @@ feature-CMAKE_MESSAGE_CONTEXT * The :variable:`CMAKE_MESSAGE_LOG_LEVEL` variable can now be used to persist a log level between CMake runs, unlike the ``--log-level`` command line option which only applies to that particular run. + +* The :command:`message` command learned to output context provided in + the :variable:`CMAKE_MESSAGE_CONTEXT` variable for log levels + ``NOTICE`` and below. Enable this output with the new ``--log-context`` + command-line option or :variable:`CMAKE_MESSAGE_CONTEXT_SHOW` variable. diff --git a/Help/variable/CMAKE_MESSAGE_CONTEXT.rst b/Help/variable/CMAKE_MESSAGE_CONTEXT.rst new file mode 100644 index 0000000..6b4ca40 --- /dev/null +++ b/Help/variable/CMAKE_MESSAGE_CONTEXT.rst @@ -0,0 +1,62 @@ +CMAKE_MESSAGE_CONTEXT +--------------------- + +When enabled by the :manual:`cmake <cmake(1)>` ``--log-context`` command line +option or the :variable:`CMAKE_MESSAGE_CONTEXT_SHOW` variable, the +:command:`message` command converts the ``CMAKE_MESSAGE_CONTEXT`` list into a +dot-separated string surrounded by square brackets and prepends it to each line +for messages of log levels ``NOTICE`` and below. + +For logging contexts to work effectively, projects should generally +``APPEND`` and ``POP_BACK`` an item to the current value of +``CMAKE_MESSAGE_CONTEXT`` rather than replace it. +Projects should not assume the message context at the top of the source tree +is empty, as there are scenarios where the context might have already been set +(e.g. hierarchical projects). + +.. warning:: + + Valid context names are restricted to anything that could be used + as a CMake variable name. All names that begin with an underscore + or the string ``cmake_`` are also reserved for use by CMake and + should not be used by projects. + +Example: + +.. code-block:: cmake + + function(bar) + list(APPEND CMAKE_MESSAGE_CONTEXT "bar") + message(VERBOSE "bar VERBOSE message") + endfunction() + + function(baz) + list(APPEND CMAKE_MESSAGE_CONTEXT "baz") + message(DEBUG "baz DEBUG message") + endfunction() + + function(foo) + list(APPEND CMAKE_MESSAGE_CONTEXT "foo") + bar() + message(TRACE "foo TRACE message") + baz() + endfunction() + + list(APPEND CMAKE_MESSAGE_CONTEXT "top") + + message(VERBOSE "Before `foo`") + foo() + message(VERBOSE "After `foo`") + + list(POP_BACK CMAKE_MESSAGE_CONTEXT) + + +Which results in the following output: + +.. code-block:: none + + -- [top] Before `foo` + -- [top.foo.bar] bar VERBOSE message + -- [top.foo] foo TRACE message + -- [top.foo.baz] baz DEBUG message + -- [top] After `foo` diff --git a/Help/variable/CMAKE_MESSAGE_CONTEXT_SHOW.rst b/Help/variable/CMAKE_MESSAGE_CONTEXT_SHOW.rst new file mode 100644 index 0000000..7ec218e --- /dev/null +++ b/Help/variable/CMAKE_MESSAGE_CONTEXT_SHOW.rst @@ -0,0 +1,15 @@ +CMAKE_MESSAGE_CONTEXT_SHOW +-------------------------- + +Setting this variable to true enables showing a context with each line +logged by the :command:`message` command (see :variable:`CMAKE_MESSAGE_CONTEXT` +for how the context itself is specified). + +This variable is an alternative to providing the ``--log-context`` option +on the :manual:`cmake <cmake(1)>` command line. Whereas the command line +option will apply only to that one CMake run, setting +``CMAKE_MESSAGE_CONTEXT_SHOW`` to true as a cache variable will ensure that +subsequent CMake runs will continue to show the message context. + +Projects should not set ``CMAKE_MESSAGE_CONTEXT_SHOW``. It is intended for +users so that they may control whether or not to include context with messages. |