CMake/Help/manual/ctest.1.rst

.. cmake-manual-description: CTest Command-Line Reference

ctest(1)
********

.. contents::

Synopsis
========

.. parsed-literal::

 ctest [<options>]
 ctest <path-to-source> <path-to-build> --build-generator <generator>
       [<options>...] [-- <build-options>...] [--test-command <test>]
 ctest (-D <dashboard> | -M <model> -T <action> | -S <script> | -SP <script>)
       [-- <dashboard-options>...]

Description
===========

The "ctest" executable is the CMake test driver program.
CMake-generated build trees created for projects that use the
ENABLE_TESTING and ADD_TEST commands have testing support.  This
program will run the tests and report results.

Options
=======

``-C <cfg>, --build-config <cfg>``
 Choose configuration to test.

 Some CMake-generated build trees can have multiple build
 configurations in the same tree.  This option can be used to specify
 which one should be tested.  Example configurations are "Debug" and
 "Release".

``-V,--verbose``
 Enable verbose output from tests.

 Test output is normally suppressed and only summary information is
 displayed.  This option will show all test output.

``-VV,--extra-verbose``
 Enable more verbose output from tests.

 Test output is normally suppressed and only summary information is
 displayed.  This option will show even more test output.

``--debug``
 Displaying more verbose internals of CTest.

 This feature will result in a large number of output that is mostly
 useful for debugging dashboard problems.

``--output-on-failure``
 Output anything outputted by the test program if the test should fail.
 This option can also be enabled by setting the environment variable
 ``CTEST_OUTPUT_ON_FAILURE``.

``-F``
 Enable failover.

 This option allows CTest to resume a test set execution that was
 previously interrupted.  If no interruption occurred, the ``-F`` option
 will have no effect.

``-j <jobs>, --parallel <jobs>``
 Run the tests in parallel using the given number of jobs.

 This option tells CTest to run the tests in parallel using given
 number of jobs. This option can also be set by setting the
 environment variable ``CTEST_PARALLEL_LEVEL``.

 This option can be used with the :prop_test:`PROCESSORS` test property.

 See `Label and Subproject Summary`_.

``--test-load <level>``
 While running tests in parallel (e.g. with ``-j``), try not to start
 tests when they may cause the CPU load to pass above a given threshold.

 When ``ctest`` is run as a `Dashboard Client`_ this sets the
 ``TestLoad`` option of the `CTest Test Step`_.

``-Q,--quiet``
 Make CTest quiet.

 This option will suppress all the output.  The output log file will
 still be generated if the ``--output-log`` is specified.  Options such
 as ``--verbose``, ``--extra-verbose``, and ``--debug`` are ignored
 if ``--quiet`` is specified.

``-O <file>, --output-log <file>``
 Output to log file.

 This option tells CTest to write all its output to a log file.

``-N,--show-only``
 Disable actual execution of tests.

 This option tells CTest to list the tests that would be run but not
 actually run them.  Useful in conjunction with the ``-R`` and ``-E``
 options.

``-L <regex>, --label-regex <regex>``
 Run tests with labels matching regular expression.

 This option tells CTest to run only the tests whose labels match the
 given regular expression.

``-R <regex>, --tests-regex <regex>``
 Run tests matching regular expression.

 This option tells CTest to run only the tests whose names match the
 given regular expression.

``-E <regex>, --exclude-regex <regex>``
 Exclude tests matching regular expression.

 This option tells CTest to NOT run the tests whose names match the
 given regular expression.

``-LE <regex>, --label-exclude <regex>``
 Exclude tests with labels matching regular expression.

 This option tells CTest to NOT run the tests whose labels match the
 given regular expression.

``-FA <regex>, --fixture-exclude-any <regex>``
 Exclude fixtures matching ``<regex>`` from automatically adding any tests to
 the test set.

 If a test in the set of tests to be executed requires a particular fixture,
 that fixture's setup and cleanup tests would normally be added to the test set
 automatically. This option prevents adding setup or cleanup tests for fixtures
 matching the ``<regex>``. Note that all other fixture behavior is retained,
 including test dependencies and skipping tests that have fixture setup tests
 that fail.

``-FS <regex>, --fixture-exclude-setup <regex>``
 Same as ``-FA`` except only matching setup tests are excluded.

``-FC <regex>, --fixture-exclude-cleanup <regex>``
 Same as ``-FA`` except only matching cleanup tests are excluded.

``-D <dashboard>, --dashboard <dashboard>``
 Execute dashboard test.

 This option tells CTest to act as a CDash client and perform a
 dashboard test.  All tests are <Mode><Test>, where Mode can be
 Experimental, Nightly, and Continuous, and Test can be Start,
 Update, Configure, Build, Test, Coverage, and Submit.

 See `Dashboard Client`_.

``-D <var>:<type>=<value>``
 Define a variable for script mode.

 Pass in variable values on the command line.  Use in conjunction
 with ``-S`` to pass variable values to a dashboard script.  Parsing ``-D``
 arguments as variable values is only attempted if the value
 following ``-D`` does not match any of the known dashboard types.

``-M <model>, --test-model <model>``
 Sets the model for a dashboard.

 This option tells CTest to act as a CDash client where the ``<model>``
 can be ``Experimental``, ``Nightly``, and ``Continuous``.
 Combining ``-M`` and ``-T`` is similar to ``-D``.

 See `Dashboard Client`_.

``-T <action>, --test-action <action>``
 Sets the dashboard action to perform.

 This option tells CTest to act as a CDash client and perform some
 action such as ``start``, ``build``, ``test`` etc. See
 `Dashboard Client Steps`_ for the full list of actions.
 Combining ``-M`` and ``-T`` is similar to ``-D``.

 See `Dashboard Client`_.

``-S <script>, --script <script>``
 Execute a dashboard for a configuration.

 This option tells CTest to load in a configuration script which sets
 a number of parameters such as the binary and source directories.
 Then CTest will do what is required to create and run a dashboard.
 This option basically sets up a dashboard and then runs ``ctest -D``
 with the appropriate options.

 See `Dashboard Client`_.

``-SP <script>, --script-new-process <script>``
 Execute a dashboard for a configuration.

 This option does the same operations as ``-S`` but it will do them in a
 separate process.  This is primarily useful in cases where the
 script may modify the environment and you do not want the modified
 environment to impact other ``-S`` scripts.

 See `Dashboard Client`_.

``-I [Start,End,Stride,test#,test#|Test file], --tests-information``
 Run a specific number of tests by number.

 This option causes CTest to run tests starting at number Start,
 ending at number End, and incrementing by Stride.  Any additional
 numbers after Stride are considered individual test numbers.  Start,
 End,or stride can be empty.  Optionally a file can be given that
 contains the same syntax as the command line.

``-U, --union``
 Take the Union of ``-I`` and ``-R``.

 When both ``-R`` and ``-I`` are specified by default the intersection of
 tests are run.  By specifying ``-U`` the union of tests is run instead.

``--rerun-failed``
 Run only the tests that failed previously.

 This option tells CTest to perform only the tests that failed during
 its previous run.  When this option is specified, CTest ignores all
 other options intended to modify the list of tests to run (``-L``, ``-R``,
 ``-E``, ``-LE``, ``-I``, etc).  In the event that CTest runs and no tests
 fail, subsequent calls to CTest with the ``--rerun-failed`` option will run
 the set of tests that most recently failed (if any).

``--repeat-until-fail <n>``
 Require each test to run ``<n>`` times without failing in order to pass.

 This is useful in finding sporadic failures in test cases.

``--max-width <width>``
 Set the max width for a test name to output.

 Set the maximum width for each test name to show in the output.
 This allows the user to widen the output to avoid clipping the test
 name which can be very annoying.

``--interactive-debug-mode [0|1]``
 Set the interactive mode to 0 or 1.

 This option causes CTest to run tests in either an interactive mode
 or a non-interactive mode.  On Windows this means that in
 non-interactive mode, all system debug pop up windows are blocked.
 In dashboard mode (Experimental, Nightly, Continuous), the default
 is non-interactive.  When just running tests not for a dashboard the
 default is to allow popups and interactive debugging.

``--no-label-summary``
 Disable timing summary information for labels.

 This option tells CTest not to print summary information for each
 label associated with the tests run.  If there are no labels on the
 tests, nothing extra is printed.

 See `Label and Subproject Summary`_.

``--no-subproject-summary``
 Disable timing summary information for subprojects.

 This option tells CTest not to print summary information for each
 subproject associated with the tests run.  If there are no subprojects on the
 tests, nothing extra is printed.

 See `Label and Subproject Summary`_.

``--build-and-test``
See `Build and Test Mode`_.

``--test-output-size-passed <size>``
 Limit the output for passed tests to ``<size>`` bytes.

``--test-output-size-failed <size>``
 Limit the output for failed tests to ``<size>`` bytes.

``--overwrite``
 Overwrite CTest configuration option.

 By default CTest uses configuration options from configuration file.
 This option will overwrite the configuration option.

``--force-new-ctest-process``
 Run child CTest instances as new processes.

 By default CTest will run child CTest instances within the same
 process.  If this behavior is not desired, this argument will
 enforce new processes for child CTest processes.

``--schedule-random``
 Use a random order for scheduling tests.

 This option will run the tests in a random order.  It is commonly
 used to detect implicit dependencies in a test suite.

``--submit-index``
 Legacy option for old Dart2 dashboard server feature.
 Do not use.

``--timeout <seconds>``
 Set a global timeout on all tests.

 This option will set a global timeout on all tests that do not
 already have a timeout set on them.

``--stop-time <time>``
 Set a time at which all tests should stop running.

 Set a real time of day at which all tests should timeout.  Example:
 ``7:00:00 -0400``.  Any time format understood by the curl date parser
 is accepted.  Local time is assumed if no timezone is specified.

``--print-labels``
 Print all available test labels.

 This option will not run any tests, it will simply print the list of
 all labels associated with the test set.

.. include:: OPTIONS_HELP.txt

.. _`Label and Subproject Summary`:

Label and Subproject Summary
============================

CTest prints timing summary information for each label and subproject
associated with the tests run. The label time summary will not include labels
that are mapped to subprojects.

When the :prop_test:`PROCESSORS` test property is set, CTest will display a
weighted test timing result in label and subproject summaries. The time is
reported with `sec*proc` instead of just `sec`.

The weighted time summary reported for each label or subproject j is computed
as::

  Weighted Time Summary for Label/Subproject j =
      sum(raw_test_time[j,i] * num_processors[j,i], i=1...num_tests[j])

  for labels/subprojects j=1...total

where:

* raw_test_time[j,i]: Wall-clock time for the ith test for the jth label or
  subproject
* num_processors[j,i]: Value of the CTest PROCESSORS property for the ith test
  for the jth label or subproject
* num_tests[j]: Number of tests associated with the jth label or subproject
* total: Total number of labels or subprojects that have at least one test run

Therefore, the weighted time summary for each label or subproject represents
the amount of time that CTest gave to run the tests for each label or
subproject and gives a good representation of the total expense of the tests
for each label or subproject when compared to other labels or subprojects.

For example, if "SubprojectA" showed "100 sec*proc" and "SubprojectB" showed
"10 sec*proc", then CTest allocated approximately  10 times the CPU/core time
to run the tests for "SubprojectA" than for "SubprojectB" (e.g. so if effort
is going to be expended to reduce the cost of the test suite for the whole
project, then reducing the cost of the test suite for "SubprojectA" would
likely have a larger impact than effort to reduce the cost of the test suite
for "SubprojectB").

.. _`Build and Test Mode`:

Build and Test Mode
===================

CTest provides a command-line signature to to configure (i.e.  run cmake on),
build, and or execute a test::

  ctest --build-and-test <path-to-source> <path-to-build>
        --build-generator <generator> [<options>...] [-- <build-options>...]
        [--test-command <test>]

The configure and test steps are optional. The arguments to this command line
are the source and binary directories. The ``--build-generator`` option *must*
be provided to use ``--build-and-test``.  If ``--test-command`` is specified
then that will be run after the build is complete.  Other options that affect
this mode include:

``--build-target``
 Specify a specific target to build.

 If left out the ``all`` target is built.

``--build-nocmake``
 Run the build without running cmake first.

 Skip the cmake step.

``--build-run-dir``
 Specify directory to run programs from.

 Directory where programs will be after it has been compiled.

``--build-two-config``
 Run CMake twice.

``--build-exe-dir``
 Specify the directory for the executable.

``--build-generator``
 Specify the generator to use. See the :manual:`cmake-generators(7)` manual.

``--build-generator-platform``
 Specify the generator-specific platform.

``--build-generator-toolset``
 Specify the generator-specific toolset.

``--build-project``
 Specify the name of the project to build.

``--build-makeprogram``
 Override the make program chosen by CTest with a given one.

``--build-noclean``
 Skip the make clean step.

``--build-config-sample``
 A sample executable to use to determine the configuration that
 should be used.  e.g.  Debug/Release/etc.

``--build-options``
 Add extra options to the build step.

 This option must be the last option with the exception of
 ``--test-command``

``--test-command``
 The test to run with the ``--build-and-test`` option.

``--test-timeout``
 The time limit in seconds

.. _`Dashboard Client`:

Dashboard Client
================

CTest can operate as a client for the `CDash`_ software quality dashboard
application.  As a dashboard client, CTest performs a sequence of steps
to configure, build, and test software, and then submits the results to
a `CDash`_ server. The command-line signature used to submit to `CDash`_ is::

  ctest (-D <dashboard> | -M <model> -T <action> | -S <script> | -SP <script>)
        [-- <dashboard-options>...]

Options for Dashboard Client include:

``--track <track>``
 Specify the track to submit dashboard to

 Submit dashboard to specified track instead of default one.  By
 default, the dashboard is submitted to Nightly, Experimental, or
 Continuous track, but by specifying this option, the track can be
 arbitrary.

``-A <file>, --add-notes <file>``
 Add a notes file with submission.

 This option tells CTest to include a notes file when submitting
 dashboard.

``--tomorrow-tag``
 Nightly or experimental starts with next day tag.

 This is useful if the build will not finish in one day.

``--extra-submit <file>[;<file>]``
 Submit extra files to the dashboard.

 This option will submit extra files to the dashboard.

``--http1.0``
 Submit using HTTP 1.0.

 This option will force CTest to use HTTP 1.0 to submit files to the
 dashboard, instead of HTTP 1.1.

``--no-compress-output``
 Do not compress test output when submitting.

 This flag will turn off automatic compression of test output.  Use
 this to maintain compatibility with an older version of CDash which
 doesn't support compressed test output.

Dashboard Client Steps
----------------------

CTest defines an ordered list of testing steps of which some or all may
be run as a dashboard client:

``Start``
  Start a new dashboard submission to be composed of results recorded
  by the following steps.
  See the `CTest Start Step`_ section below.

``Update``
  Update the source tree from its version control repository.
  Record the old and new versions and the list of updated source files.
  See the `CTest Update Step`_ section below.

``Configure``
  Configure the software by running a command in the build tree.
  Record the configuration output log.
  See the `CTest Configure Step`_ section below.

``Build``
  Build the software by running a command in the build tree.
  Record the build output log and detect warnings and errors.
  See the `CTest Build Step`_ section below.

``Test``
  Test the software by loading a ``CTestTestfile.cmake``
  from the build tree and executing the defined tests.
  Record the output and result of each test.
  See the `CTest Test Step`_ section below.

``Coverage``
  Compute coverage of the source code by running a coverage
  analysis tool and recording its output.
  See the `CTest Coverage Step`_ section below.

``MemCheck``
  Run the software test suite through a memory check tool.
  Record the test output, results, and issues reported by the tool.
  See the `CTest MemCheck Step`_ section below.

``Submit``
  Submit results recorded from other testing steps to the
  software quality dashboard server.
  See the `CTest Submit Step`_ section below.

Dashboard Client Modes
----------------------

CTest defines three modes of operation as a dashboard client:

``Nightly``
  This mode is intended to be invoked once per day, typically at night.
  It enables the ``Start``, ``Update``, ``Configure``, ``Build``, ``Test``,
  ``Coverage``, and ``Submit`` steps by default.  Selected steps run even
  if the ``Update`` step reports no changes to the source tree.

``Continuous``
  This mode is intended to be invoked repeatedly throughout the day.
  It enables the ``Start``, ``Update``, ``Configure``, ``Build``, ``Test``,
  ``Coverage``, and ``Submit`` steps by default, but exits after the
  ``Update`` step if it reports no changes to the source tree.

``Experimental``
  This mode is intended to be invoked by a developer to test local changes.
  It enables the ``Start``, ``Configure``, ``Build``, ``Test``, ``Coverage``,
  and ``Submit`` steps by default.

Dashboard Client via CTest Command-Line
---------------------------------------

CTest can perform testing on an already-generated build tree.
Run the ``ctest`` command with the current working directory set
to the build tree and use one of these signatures::

  ctest -D <mode>[<step>]
  ctest -M <mode> [ -T <step> ]...

The ``<mode>`` must be one of the above `Dashboard Client Modes`_,
and each ``<step>`` must be one of the above `Dashboard Client Steps`_.

CTest reads the `Dashboard Client Configuration`_ settings from
a file in the build tree called either ``CTestConfiguration.ini``
or ``DartConfiguration.tcl`` (the names are historical).  The format
of the file is::

  # Lines starting in '#' are comments.
  # Other non-blank lines are key-value pairs.
  <setting>: <value>

where ``<setting>`` is the setting name and ``<value>`` is the
setting value.

In build trees generated by CMake, this configuration file is
generated by the :module:`CTest` module if included by the project.
The module uses variables to obtain a value for each setting
as documented with the settings below.

.. _`CTest Script`:

Dashboard Client via CTest Script
---------------------------------

CTest can perform testing driven by a :manual:`cmake-language(7)`
script that creates and maintains the source and build tree as
well as performing the testing steps.  Run the ``ctest`` command
with the current working directory set outside of any build tree
and use one of these signatures::

  ctest -S <script>
  ctest -SP <script>

The ``<script>`` file must call :ref:`CTest Commands` commands
to run testing steps explicitly as documented below.  The commands
obtain `Dashboard Client Configuration`_ settings from their
arguments or from variables set in the script.

Dashboard Client Configuration
==============================

The `Dashboard Client Steps`_ may be configured by named
settings as documented in the following sections.

.. _`CTest Start Step`:

CTest Start Step
----------------

Start a new dashboard submission to be composed of results recorded
by the following steps.

In a `CTest Script`_, the :command:`ctest_start` command runs this step.
Arguments to the command may specify some of the step settings.
The command first runs the command-line specified by the
``CTEST_CHECKOUT_COMMAND`` variable, if set, to initialize the source
directory.

Configuration settings include:

``BuildDirectory``
  The full path to the project build tree.

  * `CTest Script`_ variable: :variable:`CTEST_BINARY_DIRECTORY`
  * :module:`CTest` module variable: :variable:`PROJECT_BINARY_DIR`

``SourceDirectory``
  The full path to the project source tree.

  * `CTest Script`_ variable: :variable:`CTEST_SOURCE_DIRECTORY`
  * :module:`CTest` module variable: :variable:`PROJECT_SOURCE_DIR`

.. _`CTest Update Step`:

CTest Update Step
-----------------

In a `CTest Script`_, the :command:`ctest_update` command runs this step.
Arguments to the command may specify some of the step settings.

Configuration settings to specify the version control tool include:

``BZRCommand``
  ``bzr`` command-line tool to use if source tree is managed by Bazaar.

  * `CTest Script`_ variable: :variable:`CTEST_BZR_COMMAND`
  * :module:`CTest` module variable: none

``BZRUpdateOptions``
  Command-line options to the ``BZRCommand`` when updating the source.

  * `CTest Script`_ variable: :variable:`CTEST_BZR_UPDATE_OPTIONS`
  * :module:`CTest` module variable: none

``CVSCommand``
  ``cvs`` command-line tool to use if source tree is managed by CVS.

  * `CTest Script`_ variable: :variable:`CTEST_CVS_COMMAND`
  * :module:`CTest` module variable: ``CVSCOMMAND``

``CVSUpdateOptions``
  Command-line options to the ``CVSCommand`` when updating the source.

  * `CTest Script`_ variable: :variable:`CTEST_CVS_UPDATE_OPTIONS`
  * :module:`CTest` module variable: ``CVS_UPDATE_OPTIONS``

``GITCommand``
  ``git`` command-line tool to use if source tree is managed by Git.

  * `CTest Script`_ variable: :variable:`CTEST_GIT_COMMAND`
  * :module:`CTest` module variable: ``GITCOMMAND``

  The source tree is updated by ``git fetch`` followed by
  ``git reset --hard`` to the ``FETCH_HEAD``.  The result is the same
  as ``git pull`` except that any local moficiations are overwritten.
  Use ``GITUpdateCustom`` to specify a different approach.

``GITInitSubmodules``
  If set, CTest will update the repository's submodules before updating.

  * `CTest Script`_ variable: :variable:`CTEST_GIT_INIT_SUBMODULES`
  * :module:`CTest` module variable: ``CTEST_GIT_INIT_SUBMODULES``

``GITUpdateCustom``
  Specify a custom command line (as a semicolon-separated list) to run
  in the source tree (Git work tree) to update it instead of running
  the ``GITCommand``.

  * `CTest Script`_ variable: :variable:`CTEST_GIT_UPDATE_CUSTOM`
  * :module:`CTest` module variable: ``CTEST_GIT_UPDATE_CUSTOM``

``GITUpdateOptions``
  Command-line options to the ``GITCommand`` when updating the source.

  * `CTest Script`_ variable: :variable:`CTEST_GIT_UPDATE_OPTIONS`
  * :module:`CTest` module variable: ``GIT_UPDATE_OPTIONS``

``HGCommand``
  ``hg`` command-line tool to use if source tree is managed by Mercurial.

  * `CTest Script`_ variable: :variable:`CTEST_HG_COMMAND`
  * :module:`CTest` module variable: none

``HGUpdateOptions``
  Command-line options to the ``HGCommand`` when updating the source.

  * `CTest Script`_ variable: :variable:`CTEST_HG_UPDATE_OPTIONS`
  * :module:`CTest` module variable: none

``P4Client``
  Value of the ``-c`` option to the ``P4Command``.

  * `CTest Script`_ variable: :variable:`CTEST_P4_CLIENT`
  * :module:`CTest` module variable: ``CTEST_P4_CLIENT``

``P4Command``
  ``p4`` command-line tool to use if source tree is managed by Perforce.

  * `CTest Script`_ variable: :variable:`CTEST_P4_COMMAND`
  * :module:`CTest` module variable: ``P4COMMAND``

``P4Options``
  Command-line options to the ``P4Command`` for all invocations.

  * `CTest Script`_ variable: :variable:`CTEST_P4_OPTIONS`
  * :module:`CTest` module variable: ``CTEST_P4_OPTIONS``

``P4UpdateCustom``
  Specify a custom command line (as a semicolon-separated list) to run
  in the source tree (Perforce tree) to update it instead of running
  the ``P4Command``.

  * `CTest Script`_ variable: none
  * :module:`CTest` module variable: ``CTEST_P4_UPDATE_CUSTOM``

``P4UpdateOptions``
  Command-line options to the ``P4Command`` when updating the source.

  * `CTest Script`_ variable: :variable:`CTEST_P4_UPDATE_OPTIONS`
  * :module:`CTest` module variable: ``CTEST_P4_UPDATE_OPTIONS``

``SVNCommand``
  ``svn`` command-line tool to use if source tree is managed by Subversion.

  * `CTest Script`_ variable: :variable:`CTEST_SVN_COMMAND`
  * :module:`CTest` module variable: ``SVNCOMMAND``

``SVNOptions``
  Command-line options to the ``SVNCommand`` for all invocations.

  * `CTest Script`_ variable: :variable:`CTEST_SVN_OPTIONS`
  * :module:`CTest` module variable: ``CTEST_SVN_OPTIONS``

``SVNUpdateOptions``
  Command-line options to the ``SVNCommand`` when updating the source.

  * `CTest Script`_ variable: :variable:`CTEST_SVN_UPDATE_OPTIONS`
  * :module:`CTest` module variable: ``SVN_UPDATE_OPTIONS``

``UpdateCommand``
  Specify the version-control command-line tool to use without
  detecting the VCS that manages the source tree.

  * `CTest Script`_ variable: :variable:`CTEST_UPDATE_COMMAND`
  * :module:`CTest` module variable: ``<VCS>COMMAND``
    when ``UPDATE_TYPE`` is ``<vcs>``, else ``UPDATE_COMMAND``

``UpdateOptions``
  Command-line options to the ``UpdateCommand``.

  * `CTest Script`_ variable: :variable:`CTEST_UPDATE_OPTIONS`
  * :module:`CTest` module variable: ``<VCS>_UPDATE_OPTIONS``
    when ``UPDATE_TYPE`` is ``<vcs>``, else ``UPDATE_OPTIONS``

``UpdateType``
  Specify the version-control system that manages the source
  tree if it cannot be detected automatically.
  The value may be ``bzr``, ``cvs``, ``git``, ``hg``,
  ``p4``, or ``svn``.

  * `CTest Script`_ variable: none, detected from source tree
  * :module:`CTest` module variable: ``UPDATE_TYPE`` if set,
    else ``CTEST_UPDATE_TYPE``

``UpdateVersionOnly``
  Specify that you want the version control update command to only
  discover the current version that is checked out, and not to update
  to a different version.

  * `CTest Script`_ variable: :variable:`CTEST_UPDATE_VERSION_ONLY`


Additional configuration settings include:

``NightlyStartTime``
  In the ``Nightly`` dashboard mode, specify the "nightly start time".
  With centralized version control systems (``cvs`` and ``svn``),
  the ``Update`` step checks out the version of the software as of
  this time so that multiple clients choose a common version to test.
  This is not well-defined in distributed version-control systems so
  the setting is ignored.

  * `CTest Script`_ variable: :variable:`CTEST_NIGHTLY_START_TIME`
  * :module:`CTest` module variable: ``NIGHTLY_START_TIME`` if set,
    else ``CTEST_NIGHTLY_START_TIME``

.. _`CTest Configure Step`:

CTest Configure Step
--------------------

In a `CTest Script`_, the :command:`ctest_configure` command runs this step.
Arguments to the command may specify some of the step settings.

Configuration settings include:

``ConfigureCommand``
  Command-line to launch the software configuration process.
  It will be executed in the location specified by the
  ``BuildDirectory`` setting.

  * `CTest Script`_ variable: :variable:`CTEST_CONFIGURE_COMMAND`
  * :module:`CTest` module variable: :variable:`CMAKE_COMMAND`
    followed by :variable:`PROJECT_SOURCE_DIR`

``LabelsForSubprojects``
  Specify a semicolon-separated list of labels that will be treated as
  subprojects. This mapping will be passed on to CDash when configure, test or
  build results are submitted.

  * `CTest Script`_ variable: :variable:`CTEST_LABELS_FOR_SUBPROJECTS`
  * :module:`CTest` module variable: ``CTEST_LABELS_FOR_SUBPROJECTS``

  See `Label and Subproject Summary`_.

.. _`CTest Build Step`:

CTest Build Step
----------------

In a `CTest Script`_, the :command:`ctest_build` command runs this step.
Arguments to the command may specify some of the step settings.

Configuration settings include:

``DefaultCTestConfigurationType``
  When the build system to be launched allows build-time selection
  of the configuration (e.g. ``Debug``, ``Release``), this specifies
  the default configuration to be built when no ``-C`` option is
  given to the ``ctest`` command.  The value will be substituted into
  the value of ``MakeCommand`` to replace the literal string
  ``${CTEST_CONFIGURATION_TYPE}`` if it appears.

  * `CTest Script`_ variable: :variable:`CTEST_CONFIGURATION_TYPE`
  * :module:`CTest` module variable: ``DEFAULT_CTEST_CONFIGURATION_TYPE``,
    initialized by the ``CMAKE_CONFIG_TYPE`` environment variable

``LabelsForSubprojects``
  Specify a semicolon-separated list of labels that will be treated as
  subprojects. This mapping will be passed on to CDash when configure, test or
  build results are submitted.

  * `CTest Script`_ variable: :variable:`CTEST_LABELS_FOR_SUBPROJECTS`
  * :module:`CTest` module variable: ``CTEST_LABELS_FOR_SUBPROJECTS``

  See `Label and Subproject Summary`_.

``MakeCommand``
  Command-line to launch the software build process.
  It will be executed in the location specified by the
  ``BuildDirectory`` setting.

  * `CTest Script`_ variable: :variable:`CTEST_BUILD_COMMAND`
  * :module:`CTest` module variable: ``MAKECOMMAND``,
    initialized by the :command:`build_command` command

``UseLaunchers``
  For build trees generated by CMake using one of the
  :ref:`Makefile Generators` or the :generator:`Ninja`
  generator, specify whether the
  ``CTEST_USE_LAUNCHERS`` feature is enabled by the
  :module:`CTestUseLaunchers` module (also included by the
  :module:`CTest` module).  When enabled, the generated build
  system wraps each invocation of the compiler, linker, or
  custom command line with a "launcher" that communicates
  with CTest via environment variables and files to report
  granular build warning and error information.  Otherwise,
  CTest must "scrape" the build output log for diagnostics.

  * `CTest Script`_ variable: :variable:`CTEST_USE_LAUNCHERS`
  * :module:`CTest` module variable: ``CTEST_USE_LAUNCHERS``

.. _`CTest Test Step`:

CTest Test Step
---------------

In a `CTest Script`_, the :command:`ctest_test` command runs this step.
Arguments to the command may specify some of the step settings.

Configuration settings include:

``LabelsForSubprojects``
  Specify a semicolon-separated list of labels that will be treated as
  subprojects. This mapping will be passed on to CDash when configure, test or
  build results are submitted.

  * `CTest Script`_ variable: :variable:`CTEST_LABELS_FOR_SUBPROJECTS`
  * :module:`CTest` module variable: ``CTEST_LABELS_FOR_SUBPROJECTS``

  See `Label and Subproject Summary`_.

``TestLoad``
  While running tests in parallel (e.g. with ``-j``), try not to start
  tests when they may cause the CPU load to pass above a given threshold.

  * `CTest Script`_ variable: :variable:`CTEST_TEST_LOAD`
  * :module:`CTest` module variable: ``CTEST_TEST_LOAD``

``TimeOut``
  The default timeout for each test if not specified by the
  :prop_test:`TIMEOUT` test property.

  * `CTest Script`_ variable: :variable:`CTEST_TEST_TIMEOUT`
  * :module:`CTest` module variable: ``DART_TESTING_TIMEOUT``

.. _`CTest Coverage Step`:

CTest Coverage Step
-------------------

In a `CTest Script`_, the :command:`ctest_coverage` command runs this step.
Arguments to the command may specify some of the step settings.

Configuration settings include:

``CoverageCommand``
  Command-line tool to perform software coverage analysis.
  It will be executed in the location specified by the
  ``BuildDirectory`` setting.

  * `CTest Script`_ variable: :variable:`CTEST_COVERAGE_COMMAND`
  * :module:`CTest` module variable: ``COVERAGE_COMMAND``

``CoverageExtraFlags``
  Specify command-line options to the ``CoverageCommand`` tool.

  * `CTest Script`_ variable: :variable:`CTEST_COVERAGE_EXTRA_FLAGS`
  * :module:`CTest` module variable: ``COVERAGE_EXTRA_FLAGS``

  These options are the first arguments passed to ``CoverageCommand``.

.. _`CTest MemCheck Step`:

CTest MemCheck Step
-------------------

In a `CTest Script`_, the :command:`ctest_memcheck` command runs this step.
Arguments to the command may specify some of the step settings.

Configuration settings include:

``MemoryCheckCommand``
  Command-line tool to perform dynamic analysis.  Test command lines
  will be launched through this tool.

  * `CTest Script`_ variable: :variable:`CTEST_MEMORYCHECK_COMMAND`
  * :module:`CTest` module variable: ``MEMORYCHECK_COMMAND``

``MemoryCheckCommandOptions``
  Specify command-line options to the ``MemoryCheckCommand`` tool.
  They will be placed prior to the test command line.

  * `CTest Script`_ variable: :variable:`CTEST_MEMORYCHECK_COMMAND_OPTIONS`
  * :module:`CTest` module variable: ``MEMORYCHECK_COMMAND_OPTIONS``

``MemoryCheckType``
  Specify the type of memory checking to perform.

  * `CTest Script`_ variable: :variable:`CTEST_MEMORYCHECK_TYPE`
  * :module:`CTest` module variable: ``MEMORYCHECK_TYPE``

``MemoryCheckSanitizerOptions``
  Specify options to sanitizers when running with a sanitize-enabled build.

  * `CTest Script`_ variable: :variable:`CTEST_MEMORYCHECK_SANITIZER_OPTIONS`
  * :module:`CTest` module variable: ``MEMORYCHECK_SANITIZER_OPTIONS``

``MemoryCheckSuppressionFile``
  Specify a file containing suppression rules for the
  ``MemoryCheckCommand`` tool.  It will be passed with options
  appropriate to the tool.

  * `CTest Script`_ variable: :variable:`CTEST_MEMORYCHECK_SUPPRESSIONS_FILE`
  * :module:`CTest` module variable: ``MEMORYCHECK_SUPPRESSIONS_FILE``

Additional configuration settings include:

``BoundsCheckerCommand``
  Specify a ``MemoryCheckCommand`` that is known to be command-line
  compatible with Bounds Checker.

  * `CTest Script`_ variable: none
  * :module:`CTest` module variable: none

``PurifyCommand``
  Specify a ``MemoryCheckCommand`` that is known to be command-line
  compatible with Purify.

  * `CTest Script`_ variable: none
  * :module:`CTest` module variable: ``PURIFYCOMMAND``

``ValgrindCommand``
  Specify a ``MemoryCheckCommand`` that is known to be command-line
  compatible with Valgrind.

  * `CTest Script`_ variable: none
  * :module:`CTest` module variable: ``VALGRIND_COMMAND``

``ValgrindCommandOptions``
  Specify command-line options to the ``ValgrindCommand`` tool.
  They will be placed prior to the test command line.

  * `CTest Script`_ variable: none
  * :module:`CTest` module variable: ``VALGRIND_COMMAND_OPTIONS``

.. _`CTest Submit Step`:

CTest Submit Step
-----------------

In a `CTest Script`_, the :command:`ctest_submit` command runs this step.
Arguments to the command may specify some of the step settings.

Configuration settings include:

``BuildName``
  Describe the dashboard client platform with a short string.
  (Operating system, compiler, etc.)

  * `CTest Script`_ variable: :variable:`CTEST_BUILD_NAME`
  * :module:`CTest` module variable: ``BUILDNAME``

``CDashVersion``
  Specify the version of `CDash`_ on the server.

  * `CTest Script`_ variable: none, detected from server
  * :module:`CTest` module variable: ``CTEST_CDASH_VERSION``

``CTestSubmitRetryCount``
  Specify a number of attempts to retry submission on network failure.

  * `CTest Script`_ variable: none,
    use the :command:`ctest_submit` ``RETRY_COUNT`` option.
  * :module:`CTest` module variable: ``CTEST_SUBMIT_RETRY_COUNT``

``CTestSubmitRetryDelay``
  Specify a delay before retrying submission on network failure.

  * `CTest Script`_ variable: none,
    use the :command:`ctest_submit` ``RETRY_DELAY`` option.
  * :module:`CTest` module variable: ``CTEST_SUBMIT_RETRY_DELAY``

``CurlOptions``
  Specify a semicolon-separated list of options to control the
  Curl library that CTest uses internally to connect to the
  server.  Possible options are ``CURLOPT_SSL_VERIFYPEER_OFF``
  and ``CURLOPT_SSL_VERIFYHOST_OFF``.

  * `CTest Script`_ variable: :variable:`CTEST_CURL_OPTIONS`
  * :module:`CTest` module variable: ``CTEST_CURL_OPTIONS``

``DropLocation``
  The path on the dashboard server to send the submission.

  * `CTest Script`_ variable: :variable:`CTEST_DROP_LOCATION`
  * :module:`CTest` module variable: ``DROP_LOCATION`` if set,
    else ``CTEST_DROP_LOCATION``

``DropMethod``
  Specify the method by which results should be submitted to the
  dashboard server.  The value may be ``cp``, ``ftp``, ``http``,
  ``https``, ``scp``, or ``xmlrpc`` (if CMake was built with
  support for it).

  * `CTest Script`_ variable: :variable:`CTEST_DROP_METHOD`
  * :module:`CTest` module variable: ``DROP_METHOD`` if set,
    else ``CTEST_DROP_METHOD``

``DropSite``
  The dashboard server name
  (for ``ftp``, ``http``, and ``https``, ``scp``, and ``xmlrpc``).

  * `CTest Script`_ variable: :variable:`CTEST_DROP_SITE`
  * :module:`CTest` module variable: ``DROP_SITE`` if set,
    else ``CTEST_DROP_SITE``

``DropSitePassword``
  The dashboard server login password, if any
  (for ``ftp``, ``http``, and ``https``).

  * `CTest Script`_ variable: :variable:`CTEST_DROP_SITE_PASSWORD`
  * :module:`CTest` module variable: ``DROP_SITE_PASSWORD`` if set,
    else ``CTEST_DROP_SITE_PASWORD``

``DropSiteUser``
  The dashboard server login user name, if any
  (for ``ftp``, ``http``, and ``https``).

  * `CTest Script`_ variable: :variable:`CTEST_DROP_SITE_USER`
  * :module:`CTest` module variable: ``DROP_SITE_USER`` if set,
    else ``CTEST_DROP_SITE_USER``

``IsCDash``
  Specify whether the dashboard server is `CDash`_ or an older
  dashboard server implementation requiring ``TriggerSite``.

  * `CTest Script`_ variable: :variable:`CTEST_DROP_SITE_CDASH`
  * :module:`CTest` module variable: ``CTEST_DROP_SITE_CDASH``

``ScpCommand``
  ``scp`` command-line tool to use when ``DropMethod`` is ``scp``.

  * `CTest Script`_ variable: :variable:`CTEST_SCP_COMMAND`
  * :module:`CTest` module variable: ``SCPCOMMAND``

``Site``
  Describe the dashboard client host site with a short string.
  (Hostname, domain, etc.)

  * `CTest Script`_ variable: :variable:`CTEST_SITE`
  * :module:`CTest` module variable: ``SITE``,
    initialized by the :command:`site_name` command

``TriggerSite``
  Legacy option to support older dashboard server implementations.
  Not used when ``IsCDash`` is true.

  * `CTest Script`_ variable: :variable:`CTEST_TRIGGER_SITE`
  * :module:`CTest` module variable: ``TRIGGER_SITE`` if set,
    else ``CTEST_TRIGGER_SITE``

See Also
========

.. include:: LINKS.txt

.. _`CDash`: http://cdash.org/