ctest - Testing driver provided by CMake.
Please see following description for synopsis
ctest(1) General Commands Manual ctest(1)
NAME
ctest - Testing driver provided by CMake.
USAGE
ctest [options]
DESCRIPTION
The "ctest" executable is the CMake test driver program. CMake-gener-
ated 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 config-
urations 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 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 environ-
ment 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.
-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.
-D <dashboard>, --dashboard <dashboard>
Execute dashboard test
This option tells ctest to perform act as a Dart client and per-
form 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.
-M <model>, --test-model <model>
Sets the model for a dashboard
This option tells ctest to act as a Dart client where the Test-
Model can be Experimental, Nightly, and Continuous. Combining -M
and -T is similar to -D
-T <action>, --test-action <action>
Sets the dashboard action to perform
This option tells ctest to act as a Dart client and perform some
action such as start, build, test etc. Combining -M and -T is
similar to -D
--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.
-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 direc-
tories. 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.
-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.
-A <file>, --add-notes <file>
Add a notes file with submission
This option tells ctest to include a notes file when submitting
dashboard.
-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.
--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.
--build-and-test
Configure, build and run a test.
This option tells ctest to configure (i.e. run cmake on), build,
and or execute a test. The configure and test steps are
optional. The arguments to this command line are the source and
binary directories. By default this will run CMake on the
Source/Bin directories specified unless --build-nocmake is spec-
ified. Both --build-makeprogram and --build-generator MUST be
provided to use --built-and-test. If --test-command is specified
then that will be run after the build is complete. Other options
that affect this mode are --build-target --build-nocmake,
--build-run-dir, --build-two-config, --build-exe-dir,
--build-project,--build-noclean, --build-options
--build-target
Specify a specific target to build.
This option goes with the --build-and-test option, 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.
--build-project
Specify the name of the project to build.
--build-makeprogram
Specify the make program to use.
--build-noclean
Skip the make clean step.
--build-config-sample
A sample executable to use to determine the configuration
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, internal use only.
--tomorrow-tag
Nightly or experimental starts with next day tag.
This is useful if the build will not finish in one day.
--ctest-config
The configuration file used to initialize CTest state when sub-
mitting dashboards.
This option tells CTest to use different initialization file
instead of CTestConfiguration.tcl. This way multiple initializa-
tion files can be used for example to submit to multiple dash-
boards.
--overwrite
Overwrite CTest configuration option.
By default ctest uses configuration options from configuration
file. This option will overwrite the configuration option.
--extra-submit <file>[;<file>]
Submit extra files to the dashboard.
This option will submit extra files to the dashboard.
--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
Submit individual dashboard tests with specific index
This option allows performing the same CTest action (such as
test) multiple times and submit all stages to the same dashboard
(Dart2 required). Each execution requires different index.
--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. Exam-
ple: 7:00:00 -0400. Any time format understood by the curl date
parser is accepted. Local time is assumed if no timezone is
specified.
--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.
--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.
--help-command <cmd> [<file>]
Show help for a single command and exit.
Prints the help for the command to stdout or to the specified
file.
--help-command-list [<file>]
List available commands and exit.
Prints the list of all available listfile commands to stdout or
the specified file.
--help-commands [<file>]
Print help for all commands and exit.
Prints the help for all commands to stdout or to the specified
file.
GENERATORS
The following generators are available on this platform:
COMMANDS
break Break from an enclosing foreach or while loop.
break()
Breaks from an enclosing foreach loop or while loop
build_name
Deprecated. Use ${CMAKE_SYSTEM} and ${CMAKE_CXX_COMPILER}
instead.
build_name(variable)
Sets the specified variable to a string representing the plat-
form and compiler settings. These values are now available
through the CMAKE_SYSTEM and CMAKE_CXX_COMPILER variables.
cmake_minimum_required
Set the minimum required version of cmake for a project.
cmake_minimum_required(VERSION major[.minor[.patch[.tweak]]]
[FATAL_ERROR])
If the current version of CMake is lower than that required it
will stop processing the project and report an error. When a
version higher than 2.4 is specified the command implicitly
invokes
cmake_policy(VERSION major[.minor[.patch[.tweak]]])
which sets the cmake policy version level to the version speci-
fied. When version 2.4 or lower is given the command implicitly
invokes
cmake_policy(VERSION 2.4)
which enables compatibility features for CMake 2.4 and lower.
The FATAL_ERROR option is accepted but ignored by CMake 2.6 and
higher. It should be specified so CMake versions 2.4 and lower
fail with an error instead of just a warning.
cmake_policy
Manage CMake Policy settings.
As CMake evolves it is sometimes necessary to change existing
behavior in order to fix bugs or improve implementations of
existing features. The CMake Policy mechanism is designed to
help keep existing projects building as new versions of CMake
introduce changes in behavior. Each new policy (behavioral
change) is given an identifier of the form "CMP<NNNN>" where
"<NNNN>" is an integer index. Documentation associated with
each policy describes the OLD and NEW behavior and the reason
the policy was introduced. Projects may set each policy to
select the desired behavior. When CMake needs to know which
behavior to use it checks for a setting specified by the
project. If no setting is available the OLD behavior is assumed
and a warning is produced requesting that the policy be set.
The cmake_policy command is used to set policies to OLD or NEW
behavior. While setting policies individually is supported, we
encourage projects to set policies based on CMake versions.
cmake_policy(VERSION major.minor[.patch[.tweak]])
Specify that the current CMake list file is written for the
given version of CMake. All policies introduced in the speci-
fied version or earlier will be set to use NEW behavior. All
policies introduced after the specified version will be unset
(unless variable CMAKE_POLICY_DEFAULT_CMP<NNNN> sets a default).
This effectively requests behavior preferred as of a given CMake
version and tells newer CMake versions to warn about their new
policies. The policy version specified must be at least 2.4 or
the command will report an error. In order to get compatibility
features supporting versions earlier than 2.4 see documentation
of policy CMP0001.
cmake_policy(SET CMP<NNNN> NEW)
cmake_policy(SET CMP<NNNN> OLD)
Tell CMake to use the OLD or NEW behavior for a given policy.
Projects depending on the old behavior of a given policy may
silence a policy warning by setting the policy state to OLD.
Alternatively one may fix the project to work with the new
behavior and set the policy state to NEW.
cmake_policy(GET CMP<NNNN> <variable>)
Check whether a given policy is set to OLD or NEW behavior. The
output variable value will be "OLD" or "NEW" if the policy is
set, and empty otherwise.
CMake keeps policy settings on a stack, so changes made by the
cmake_policy command affect only the top of the stack. A new
entry on the policy stack is managed automatically for each sub-
directory to protect its parents and siblings. CMake also man-
ages a new entry for scripts loaded by include() and find_pack-
age() commands except when invoked with the NO_POLICY_SCOPE
option (see also policy CMP0011). The cmake_policy command pro-
vides an interface to manage custom entries on the policy stack:
cmake_policy(PUSH)
cmake_policy(POP)
Each PUSH must have a matching POP to erase any changes. This
is useful to make temporary changes to policy settings.
Functions and macros record policy settings when they are cre-
ated and use the pre-record policies when they are invoked. If
the function or macro implementation sets policies, the changes
automatically propagate up through callers until they reach the
closest nested policy stack entry.
configure_file
Copy a file to another location and modify its contents.
configure_file(<input> <output>
[COPYONLY] [ESCAPE_QUOTES] [@ONLY])
Copies a file <input> to file <output> and substitutes variable
values referenced in the file content. If <input> is a relative
path it is evaluated with respect to the current source direc-
tory. The <input> must be a file, not a directory. If <output>
is a relative path it is evaluated with respect to the current
binary directory. If <output> names an existing directory the
input file is placed in that directory with its original name.
This command replaces any variables in the input file referenced
as ${VAR} or @VAR@ with their values as determined by CMake. If
a variable is not defined, it will be replaced with nothing. If
COPYONLY is specified, then no variable expansion will take
place. If ESCAPE_QUOTES is specified then any substituted
quotes will be C-style escaped. The file will be configured
with the current values of CMake variables. If @ONLY is speci-
fied, only variables of the form @VAR@ will be replaces and
${VAR} will be ignored. This is useful for configuring scripts
that use ${VAR}. Any occurrences of #cmakedefine VAR will be
replaced with either #define VAR or /* #undef VAR */ depending
on the setting of VAR in CMake. Any occurrences of #cmakede-
fine01 VAR will be replaced with either #define VAR 1 or #define
VAR 0 depending on whether VAR evaluates to TRUE or FALSE in
CMake
ctest_build
Build the project.
ctest_build([BUILD build_dir] [TARGET target] [RETURN_VALUE res]
[APPEND][NUMBER_ERRORS val] [NUMBER_WARNINGS val])
Builds the given build directory and stores results in
Build.xml. If no BUILD is given, the CTEST_BINARY_DIRECTORY
variable is used.
The TARGET variable can be used to specify a build target. If
none is specified, the "all" target will be built.
The RETURN_VALUE option specifies a variable in which to store
the return value of the native build tool. The NUMBER_ERRORS and
NUMBER_WARNINGS options specify variables in which to store the
number of build errors and warnings detected.
The APPEND option marks results for append to those previously
submitted to a dashboard server since the last ctest_start.
Append semantics are defined by the dashboard server in use.
ctest_configure
Configure the project build tree.
ctest_configure([BUILD build_dir] [SOURCE source_dir] [APPEND]
[OPTIONS options] [RETURN_VALUE res])
Configures the given build directory and stores results in Con-
figure.xml. If no BUILD is given, the CTEST_BINARY_DIRECTORY
variable is used. If no SOURCE is given, the CTEST_SOURCE_DIREC-
TORY variable is used. The OPTIONS argument specifies command
line arguments to pass to the configuration tool. The
RETURN_VALUE option specifies a variable in which to store the
return value of the native build tool.
The APPEND option marks results for append to those previously
submitted to a dashboard server since the last ctest_start.
Append semantics are defined by the dashboard server in use.
ctest_coverage
Collect coverage tool results.
ctest_coverage([BUILD build_dir] [RETURN_VALUE res] [APPEND]
[LABELS label1 [label2 [...]]])
Perform the coverage of the given build directory and stores
results in Coverage.xml. The second argument is a variable that
will hold value.
The LABELS option filters the coverage report to include only
source files labeled with at least one of the labels specified.
The APPEND option marks results for append to those previously
submitted to a dashboard server since the last ctest_start.
Append semantics are defined by the dashboard server in use.
ctest_empty_binary_directory
empties the binary directory
ctest_empty_binary_directory( directory )
Removes a binary directory. This command will perform some
checks prior to deleting the directory in an attempt to avoid
malicious or accidental directory deletion.
ctest_memcheck
Run tests with a dynamic analysis tool.
ctest_memcheck([BUILD build_dir] [RETURN_VALUE res] [APPEND]
[START start number] [END end number]
[STRIDE stride number] [EXCLUDE exclude regex ]
[INCLUDE include regex]
[EXCLUDE_LABEL exclude regex]
[INCLUDE_LABEL label regex]
[PARALLEL_LEVEL level] )
Tests the given build directory and stores results in Mem-
Check.xml. The second argument is a variable that will hold
value. Optionally, you can specify the starting test number
START, the ending test number END, the number of tests to skip
between each test STRIDE, a regular expression for tests to run
INCLUDE, or a regular expression for tests not to run EXCLUDE.
EXCLUDE_LABEL and INCLUDE_LABEL are regular expressions for
tests to be included or excluded by the test property LABEL.
PARALLEL_LEVEL should be set to a positive number representing
the number of tests to be run in parallel.
The APPEND option marks results for append to those previously
submitted to a dashboard server since the last ctest_start.
Append semantics are defined by the dashboard server in use.
ctest_read_custom_files
read CTestCustom files.
ctest_read_custom_files( directory ... )
Read all the CTestCustom.ctest or CTestCustom.cmake files from
the given directory.
ctest_run_script
runs a ctest -S script
ctest_run_script([NEW_PROCESS] script_file_name script_file_name1
script_file_name2 ... [RETURN_VALUE var])
Runs a script or scripts much like if it was run from ctest -S.
If no argument is provided then the current script is run using
the current settings of the variables. If NEW_PROCESS is speci-
fied then each script will be run in a separate process.If
RETURN_VALUE is specified the return value of the last script
run will be put into var.
ctest_sleep
sleeps for some amount of time
ctest_sleep(<seconds>)
Sleep for given number of seconds.
ctest_sleep(<time1> <duration> <time2>)
Sleep for t=(time1 + duration - time2) seconds if t > 0.
ctest_start
Starts the testing for a given model
ctest_start(Model [TRACK <track>] [APPEND] [source [binary]])
Starts the testing for a given model. The command should be
called after the binary directory is initialized. If the
'source' and 'binary' directory are not specified, it reads the
CTEST_SOURCE_DIRECTORY and CTEST_BINARY_DIRECTORY. If the track
is specified, the submissions will go to the specified track. If
APPEND is used, the existing TAG is used rather than creating a
new one based on the current time stamp.
ctest_submit
Submit results to a dashboard server.
ctest_submit([PARTS ...] [FILES ...] [RETRY_COUNT count] [RETRY_DELAY delay][RETURN_VALUE res])
By default all available parts are submitted if no PARTS or
FILES are specified. The PARTS option lists a subset of parts
to be submitted. Valid part names are:
Start = nothing
Update = ctest_update results, in Update.xml
Configure = ctest_configure results, in Configure.xml
Build = ctest_build results, in Build.xml
Test = ctest_test results, in Test.xml
Coverage = ctest_coverage results, in Coverage.xml
MemCheck = ctest_memcheck results, in DynamicAnalysis.xml
Notes = Files listed by CTEST_NOTES_FILES, in Notes.xml
ExtraFiles = Files listed by CTEST_EXTRA_SUBMIT_FILES
Submit = nothing
The FILES option explicitly lists specific files to be submit-
ted. Each individual file must exist at the time of the call.
The RETRY_DELAY option specifies how long in seconds to wait
after a timed-out submission before attempting to re-submit.
The RETRY_COUNT option specifies how many times to retry a
timed-out submission.
ctest_test
Run tests in the project build tree.
ctest_test([BUILD build_dir] [APPEND]
[START start number] [END end number]
[STRIDE stride number] [EXCLUDE exclude regex ]
[INCLUDE include regex] [RETURN_VALUE res]
[EXCLUDE_LABEL exclude regex]
[INCLUDE_LABEL label regex]
[PARALLEL_LEVEL level]
[SCHEDULE_RANDOM on]
[STOP_TIME time of day])
Tests the given build directory and stores results in Test.xml.
The second argument is a variable that will hold value. Option-
ally, you can specify the starting test number START, the ending
test number END, the number of tests to skip between each test
STRIDE, a regular expression for tests to run INCLUDE, or a reg-
ular expression for tests to not run EXCLUDE. EXCLUDE_LABEL and
INCLUDE_LABEL are regular expression for test to be included or
excluded by the test property LABEL. PARALLEL_LEVEL should be
set to a positive number representing the number of tests to be
run in parallel. SCHEDULE_RANDOM will launch tests in a random
order, and is typically used to detect implicit test dependen-
cies. STOP_TIME is the time of day at which the tests should all
stop running.
The APPEND option marks results for append to those previously
submitted to a dashboard server since the last ctest_start.
Append semantics are defined by the dashboard server in use.
ctest_update
Update the work tree from version control.
ctest_update([SOURCE source] [RETURN_VALUE res])
Updates the given source directory and stores results in
Update.xml. If no SOURCE is given, the CTEST_SOURCE_DIRECTORY
variable is used. The RETURN_VALUE option specifies a variable
in which to store the result, which is the number of files
updated or -1 on error.
ctest_upload
Upload files to a dashboard server.
ctest_upload(FILES ...)
Pass a list of files to be sent along with the build results to
the dashboard server.
else Starts the else portion of an if block.
else(expression)
See the if command.
elseif Starts the elseif portion of an if block.
elseif(expression)
See the if command.
endforeach
Ends a list of commands in a FOREACH block.
endforeach(expression)
See the FOREACH command.
endfunction
Ends a list of commands in a function block.
endfunction(expression)
See the function command.
endif Ends a list of commands in an if block.
endif(expression)
See the if command.
endmacro
Ends a list of commands in a macro block.
endmacro(expression)
See the macro command.
endwhile
Ends a list of commands in a while block.
endwhile(expression)
See the while command.
exec_program
Deprecated. Use the execute_process() command instead.
Run an executable program during the processing of the CMake-
List.txt file.
exec_program(Executable [directory in which to run]
[ARGS <arguments to executable>]
[OUTPUT_VARIABLE <var>]
[RETURN_VALUE <var>])
The executable is run in the optionally specified directory.
The executable can include arguments if it is double quoted, but
it is better to use the optional ARGS argument to specify argu-
ments to the program. This is because cmake will then be able
to escape spaces in the executable path. An optional argument
OUTPUT_VARIABLE specifies a variable in which to store the out-
put. To capture the return value of the execution, provide a
RETURN_VALUE. If OUTPUT_VARIABLE is specified, then no output
will go to the stdout/stderr of the console running cmake.
execute_process
Execute one or more child processes.
execute_process(COMMAND <cmd1> [args1...]]
[COMMAND <cmd2> [args2...] [...]]
[WORKING_DIRECTORY <directory>]
[TIMEOUT <seconds>]
[RESULT_VARIABLE <variable>]
[OUTPUT_VARIABLE <variable>]
[ERROR_VARIABLE <variable>]
[INPUT_FILE <file>]
[OUTPUT_FILE <file>]
[ERROR_FILE <file>]
[OUTPUT_QUIET]
[ERROR_QUIET]
[OUTPUT_STRIP_TRAILING_WHITESPACE]
[ERROR_STRIP_TRAILING_WHITESPACE])
Runs the given sequence of one or more commands with the stan-
dard output of each process piped to the standard input of the
next. A single standard error pipe is used for all processes.
If WORKING_DIRECTORY is given the named directory will be set as
the current working directory of the child processes. If TIME-
OUT is given the child processes will be terminated if they do
not finish in the specified number of seconds (fractions are
allowed). If RESULT_VARIABLE is given the variable will be set
to contain the result of running the processes. This will be an
integer return code from the last child or a string describing
an error condition. If OUTPUT_VARIABLE or ERROR_VARIABLE are
given the variable named will be set with the contents of the
standard output and standard error pipes respectively. If the
same variable is named for both pipes their output will be
merged in the order produced. If INPUT_FILE, OUTPUT_FILE, or
ERROR_FILE is given the file named will be attached to the stan-
dard input of the first process, standard output of the last
process, or standard error of all processes respectively. If
OUTPUT_QUIET or ERROR_QUIET is given then the standard output or
standard error results will be quietly ignored. If more than
one OUTPUT_* or ERROR_* option is given for the same pipe the
precedence is not specified. If no OUTPUT_* or ERROR_* options
are given the output will be shared with the corresponding pipes
of the CMake process itself.
The execute_process command is a newer more powerful version of
exec_program, but the old command has been kept for compatibil-
ity.
file File manipulation command.
file(WRITE filename "message to write"... )
file(APPEND filename "message to write"... )
file(READ filename variable [LIMIT numBytes] [OFFSET offset] [HEX])
file(STRINGS filename variable [LIMIT_COUNT num]
[LIMIT_INPUT numBytes] [LIMIT_OUTPUT numBytes]
[LENGTH_MINIMUM numBytes] [LENGTH_MAXIMUM numBytes]
[NEWLINE_CONSUME] [REGEX regex]
[NO_HEX_CONVERSION])
file(GLOB variable [RELATIVE path] [globbing expressions]...)
file(GLOB_RECURSE variable [RELATIVE path]
[FOLLOW_SYMLINKS] [globbing expressions]...)
file(RENAME <oldname> <newname>)
file(REMOVE [file1 ...])
file(REMOVE_RECURSE [file1 ...])
file(MAKE_DIRECTORY [directory1 directory2 ...])
file(RELATIVE_PATH variable directory file)
file(TO_CMAKE_PATH path result)
file(TO_NATIVE_PATH path result)
file(DOWNLOAD url file [INACTIVITY_TIMEOUT timeout]
[TIMEOUT timeout] [STATUS status] [LOG log] [SHOW_PROGRESS]
[EXPECTED_MD5 sum])
file(UPLOAD filename url [INACTIVITY_TIMEOUT timeout]
[TIMEOUT timeout] [STATUS status] [LOG log] [SHOW_PROGRESS])
WRITE will write a message into a file called 'filename'. It
overwrites the file if it already exists, and creates the file
if it does not exist.
APPEND will write a message into a file same as WRITE, except it
will append it to the end of the file
READ will read the content of a file and store it into the vari-
able. It will start at the given offset and read up to numBytes.
If the argument HEX is given, the binary data will be converted
to hexadecimal representation and this will be stored in the
variable.
STRINGS will parse a list of ASCII strings from a file and store
it in a variable. Binary data in the file are ignored. Carriage
return (CR) characters are ignored. It works also for Intel Hex
and Motorola S-record files, which are automatically converted
to binary format when reading them. Disable this using
NO_HEX_CONVERSION.
LIMIT_COUNT sets the maximum number of strings to return.
LIMIT_INPUT sets the maximum number of bytes to read from the
input file. LIMIT_OUTPUT sets the maximum number of bytes to
store in the output variable. LENGTH_MINIMUM sets the minimum
length of a string to return. Shorter strings are ignored.
LENGTH_MAXIMUM sets the maximum length of a string to return.
Longer strings are split into strings no longer than the maximum
length. NEWLINE_CONSUME allows newlines to be included in
strings instead of terminating them.
REGEX specifies a regular expression that a string must match to
be returned. Typical usage
file(STRINGS myfile.txt myfile)
stores a list in the variable "myfile" in which each item is a
line from the input file.
GLOB will generate a list of all files that match the globbing
expressions and store it into the variable. Globbing expressions
are similar to regular expressions, but much simpler. If RELA-
TIVE flag is specified for an expression, the results will be
returned as a relative path to the given path. (We do not rec-
ommend using GLOB to collect a list of source files from your
source tree. If no CMakeLists.txt file changes when a source is
added or removed then the generated build system cannot know
when to ask CMake to regenerate.)
Examples of globbing expressions include:
*.cxx - match all files with extension cxx
*.vt? - match all files with extension vta,...,vtz
f[3-5].txt - match files f3.txt, f4.txt, f5.txt
GLOB_RECURSE will generate a list similar to the regular GLOB,
except it will traverse all the subdirectories of the matched
directory and match the files. Subdirectories that are symlinks
are only traversed if FOLLOW_SYMLINKS is given or cmake policy
CMP0009 is not set to NEW. See cmake --help-policy CMP0009 for
more information.
Examples of recursive globbing include:
/dir/*.py - match all python files in /dir and subdirectories
MAKE_DIRECTORY will create the given directories, also if their
parent directories don't exist yet
RENAME moves a file or directory within a filesystem, replacing
the destination atomically.
REMOVE will remove the given files, also in subdirectories
REMOVE_RECURSE will remove the given files and directories, also
non-empty directories
RELATIVE_PATH will determine relative path from directory to the
given file.
TO_CMAKE_PATH will convert path into a cmake style path with
unix /. The input can be a single path or a system path like
"$ENV{PATH}". Note the double quotes around the ENV call
TO_CMAKE_PATH only takes one argument.
TO_NATIVE_PATH works just like TO_CMAKE_PATH, but will convert
from a cmake style path into the native path style \ for win-
dows and / for UNIX.
DOWNLOAD will download the given URL to the given file. If LOG
var is specified a log of the download will be put in var. If
STATUS var is specified the status of the operation will be put
in var. The status is returned in a list of length 2. The first
element is the numeric return value for the operation, and the
second element is a string value for the error. A 0 numeric
error means no error in the operation. If TIMEOUT time is speci-
fied, the operation will timeout after time seconds, time should
be specified as an integer. The INACTIVITY_TIMEOUT specifies an
integer number of seconds of inactivity after which the opera-
tion should terminate. If EXPECTED_MD5 sum is specified, the
operation will verify that the downloaded file's actual md5 sum
matches the expected value. If it does not match, the operation
fails with an error. If SHOW_PROGRESS is specified, progress
information will be printed as status messages until the opera-
tion is complete.
UPLOAD will upload the given file to the given URL. If LOG var
is specified a log of the upload will be put in var. If STATUS
var is specified the status of the operation will be put in var.
The status is returned in a list of length 2. The first element
is the numeric return value for the operation, and the second
element is a string value for the error. A 0 numeric error means
no error in the operation. If TIMEOUT time is specified, the
operation will timeout after time seconds, time should be speci-
fied as an integer. The INACTIVITY_TIMEOUT specifies an integer
number of seconds of inactivity after which the operation should
terminate. If SHOW_PROGRESS is specified, progress information
will be printed as status messages until the operation is com-
plete.
The file() command also provides COPY and INSTALL signatures:
file(<COPY|INSTALL> files... DESTINATION <dir>
[FILE_PERMISSIONS permissions...]
[DIRECTORY_PERMISSIONS permissions...]
[NO_SOURCE_PERMISSIONS] [USE_SOURCE_PERMISSIONS]
[FILES_MATCHING]
[[PATTERN <pattern> | REGEX <regex>]
[EXCLUDE] [PERMISSIONS permissions...]] [...])
The COPY signature copies files, directories, and symlinks to a
destination folder. Relative input paths are evaluated with
respect to the current source directory, and a relative destina-
tion is evaluated with respect to the current build directory.
Copying preserves input file timestamps, and optimizes out a
file if it exists at the destination with the same timestamp.
Copying preserves input permissions unless explicit permissions
or NO_SOURCE_PERMISSIONS are given (default is USE_SOURCE_PER-
MISSIONS). See the install(DIRECTORY) command for documentation
of permissions, PATTERN, REGEX, and EXCLUDE options.
The INSTALL signature differs slightly from COPY: it prints sta-
tus messages, and NO_SOURCE_PERMISSIONS is default. Installa-
tion scripts generated by the install() command use this signa-
ture (with some undocumented options for internal use).
find_file
Find the full path to a file.
find_file(<VAR> name1 [path1 path2 ...])
This is the short-hand signature for the command that is suffi-
cient in many cases. It is the same as find_file(<VAR> name1
[PATHS path1 path2 ...])
find_file(
<VAR>
name | NAMES name1 [name2 ...]
[HINTS path1 [path2 ... ENV var]]
[PATHS path1 [path2 ... ENV var]]
[PATH_SUFFIXES suffix1 [suffix2 ...]]
[DOC "cache documentation string"]
[NO_DEFAULT_PATH]
[NO_CMAKE_ENVIRONMENT_PATH]
[NO_CMAKE_PATH]
[NO_SYSTEM_ENVIRONMENT_PATH]
[NO_CMAKE_SYSTEM_PATH]
[CMAKE_FIND_ROOT_PATH_BOTH |
ONLY_CMAKE_FIND_ROOT_PATH |
NO_CMAKE_FIND_ROOT_PATH]
)
This command is used to find a full path to named file. A cache
entry named by <VAR> is created to store the result of this com-
mand. If the full path to a file is found the result is stored
in the variable and the search will not be repeated unless the
variable is cleared. If nothing is found, the result will be
<VAR>-NOTFOUND, and the search will be attempted again the next
time find_file is invoked with the same variable. The name of
the full path to a file that is searched for is specified by the
names listed after the NAMES argument. Additional search loca-
tions can be specified after the PATHS argument. If ENV var is
found in the HINTS or PATHS section the environment variable var
will be read and converted from a system environment variable to
a cmake style list of paths. For example ENV PATH would be a
way to list the system path variable. The argument after DOC
will be used for the documentation string in the cache.
PATH_SUFFIXES specifies additional subdirectories to check below
each search path.
If NO_DEFAULT_PATH is specified, then no additional paths are
added to the search. If NO_DEFAULT_PATH is not specified, the
search process is as follows:
1. Search paths specified in cmake-specific cache variables.
These are intended to be used on the command line with a
-DVAR=value. This can be skipped if NO_CMAKE_PATH is passed.
<prefix>/include for each <prefix> in CMAKE_PREFIX_PATH
CMAKE_INCLUDE_PATH
CMAKE_FRAMEWORK_PATH
2. Search paths specified in cmake-specific environment vari-
ables. These are intended to be set in the user's shell config-
uration. This can be skipped if NO_CMAKE_ENVIRONMENT_PATH is
passed.
<prefix>/include for each <prefix> in CMAKE_PREFIX_PATH
CMAKE_INCLUDE_PATH
CMAKE_FRAMEWORK_PATH
3. Search the paths specified by the HINTS option. These should
be paths computed by system introspection, such as a hint pro-
vided by the location of another item already found. Hard-coded
guesses should be specified with the PATHS option.
4. Search the standard system environment variables. This can be
skipped if NO_SYSTEM_ENVIRONMENT_PATH is an argument.
PATH
INCLUDE
5. Search cmake variables defined in the Platform files for the
current system. This can be skipped if NO_CMAKE_SYSTEM_PATH is
passed.
<prefix>/include for each <prefix> in CMAKE_SYSTEM_PREFIX_PATH
CMAKE_SYSTEM_INCLUDE_PATH
CMAKE_SYSTEM_FRAMEWORK_PATH
6. Search the paths specified by the PATHS option or in the
short-hand version of the command. These are typically
hard-coded guesses.
On Darwin or systems supporting OS X Frameworks, the cmake vari-
able CMAKE_FIND_FRAMEWORK can be set to empty or one of the
following:
"FIRST" - Try to find frameworks before standard
libraries or headers. This is the default on Darwin.
"LAST" - Try to find frameworks after standard
libraries or headers.
"ONLY" - Only try to find frameworks.
"NEVER" - Never try to find frameworks.
On Darwin or systems supporting OS X Application Bundles, the
cmake variable CMAKE_FIND_APPBUNDLE can be set to empty or one
of the following:
"FIRST" - Try to find application bundles before standard
programs. This is the default on Darwin.
"LAST" - Try to find application bundles after standard
programs.
"ONLY" - Only try to find application bundles.
"NEVER" - Never try to find application bundles.
The CMake variable CMAKE_FIND_ROOT_PATH specifies one or more
directories to be prepended to all other search directories.
This effectively "re-roots" the entire search under given loca-
tions. By default it is empty. It is especially useful when
cross-compiling to point to the root directory of the target
environment and CMake will search there too. By default at first
the directories listed in CMAKE_FIND_ROOT_PATH and then the
non-rooted directories will be searched. The default behavior
can be adjusted by setting CMAKE_FIND_ROOT_PATH_MODE_INCLUDE.
This behavior can be manually overridden on a per-call basis. By
using CMAKE_FIND_ROOT_PATH_BOTH the search order will be as
described above. If NO_CMAKE_FIND_ROOT_PATH is used then
CMAKE_FIND_ROOT_PATH will not be used. If
ONLY_CMAKE_FIND_ROOT_PATH is used then only the re-rooted direc-
tories will be searched.
The default search order is designed to be most-specific to
least-specific for common use cases. Projects may override the
order by simply calling the command multiple times and using the
NO_* options:
find_file(<VAR> NAMES name PATHS paths... NO_DEFAULT_PATH)
find_file(<VAR> NAMES name)
Once one of the calls succeeds the result variable will be set
and stored in the cache so that no call will search again.
find_library
Find a library.
find_library(<VAR> name1 [path1 path2 ...])
This is the short-hand signature for the command that is suffi-
cient in many cases. It is the same as find_library(<VAR> name1
[PATHS path1 path2 ...])
find_library(
<VAR>
name | NAMES name1 [name2 ...]
[HINTS path1 [path2 ... ENV var]]
[PATHS path1 [path2 ... ENV var]]
[PATH_SUFFIXES suffix1 [suffix2 ...]]
[DOC "cache documentation string"]
[NO_DEFAULT_PATH]
[NO_CMAKE_ENVIRONMENT_PATH]
[NO_CMAKE_PATH]
[NO_SYSTEM_ENVIRONMENT_PATH]
[NO_CMAKE_SYSTEM_PATH]
[CMAKE_FIND_ROOT_PATH_BOTH |
ONLY_CMAKE_FIND_ROOT_PATH |
NO_CMAKE_FIND_ROOT_PATH]
)
This command is used to find a library. A cache entry named by
<VAR> is created to store the result of this command. If the
library is found the result is stored in the variable and the
search will not be repeated unless the variable is cleared. If
nothing is found, the result will be <VAR>-NOTFOUND, and the
search will be attempted again the next time find_library is
invoked with the same variable. The name of the library that is
searched for is specified by the names listed after the NAMES
argument. Additional search locations can be specified after
the PATHS argument. If ENV var is found in the HINTS or PATHS
section the environment variable var will be read and converted
from a system environment variable to a cmake style list of
paths. For example ENV PATH would be a way to list the system
path variable. The argument after DOC will be used for the docu-
mentation string in the cache. PATH_SUFFIXES specifies addi-
tional subdirectories to check below each search path.
If NO_DEFAULT_PATH is specified, then no additional paths are
added to the search. If NO_DEFAULT_PATH is not specified, the
search process is as follows:
1. Search paths specified in cmake-specific cache variables.
These are intended to be used on the command line with a
-DVAR=value. This can be skipped if NO_CMAKE_PATH is passed.
<prefix>/lib/<arch> if CMAKE_LIBRARY_ARCHITECTURE is set, and
<prefix>/lib for each <prefix> in CMAKE_PREFIX_PATH
CMAKE_LIBRARY_PATH
CMAKE_FRAMEWORK_PATH
2. Search paths specified in cmake-specific environment vari-
ables. These are intended to be set in the user's shell config-
uration. This can be skipped if NO_CMAKE_ENVIRONMENT_PATH is
passed.
<prefix>/lib/<arch> if CMAKE_LIBRARY_ARCHITECTURE is set, and
<prefix>/lib for each <prefix> in CMAKE_PREFIX_PATH
CMAKE_LIBRARY_PATH
CMAKE_FRAMEWORK_PATH
3. Search the paths specified by the HINTS option. These should
be paths computed by system introspection, such as a hint pro-
vided by the location of another item already found. Hard-coded
guesses should be specified with the PATHS option.
4. Search the standard system environment variables. This can be
skipped if NO_SYSTEM_ENVIRONMENT_PATH is an argument.
PATH
LIB
5. Search cmake variables defined in the Platform files for the
current system. This can be skipped if NO_CMAKE_SYSTEM_PATH is
passed.
<prefix>/lib/<arch> if CMAKE_LIBRARY_ARCHITECTURE is set, and
<prefix>/lib for each <prefix> in CMAKE_SYSTEM_PREFIX_PATH
CMAKE_SYSTEM_LIBRARY_PATH
CMAKE_SYSTEM_FRAMEWORK_PATH
6. Search the paths specified by the PATHS option or in the
short-hand version of the command. These are typically
hard-coded guesses.
On Darwin or systems supporting OS X Frameworks, the cmake vari-
able CMAKE_FIND_FRAMEWORK can be set to empty or one of the
following:
"FIRST" - Try to find frameworks before standard
libraries or headers. This is the default on Darwin.
"LAST" - Try to find frameworks after standard
libraries or headers.
"ONLY" - Only try to find frameworks.
"NEVER" - Never try to find frameworks.
On Darwin or systems supporting OS X Application Bundles, the
cmake variable CMAKE_FIND_APPBUNDLE can be set to empty or one
of the following:
"FIRST" - Try to find application bundles before standard
programs. This is the default on Darwin.
"LAST" - Try to find application bundles after standard
programs.
"ONLY" - Only try to find application bundles.
"NEVER" - Never try to find application bundles.
The CMake variable CMAKE_FIND_ROOT_PATH specifies one or more
directories to be prepended to all other search directories.
This effectively "re-roots" the entire search under given loca-
tions. By default it is empty. It is especially useful when
cross-compiling to point to the root directory of the target
environment and CMake will search there too. By default at first
the directories listed in CMAKE_FIND_ROOT_PATH and then the
non-rooted directories will be searched. The default behavior
can be adjusted by setting CMAKE_FIND_ROOT_PATH_MODE_LIBRARY.
This behavior can be manually overridden on a per-call basis. By
using CMAKE_FIND_ROOT_PATH_BOTH the search order will be as
described above. If NO_CMAKE_FIND_ROOT_PATH is used then
CMAKE_FIND_ROOT_PATH will not be used. If
ONLY_CMAKE_FIND_ROOT_PATH is used then only the re-rooted direc-
tories will be searched.
The default search order is designed to be most-specific to
least-specific for common use cases. Projects may override the
order by simply calling the command multiple times and using the
NO_* options:
find_library(<VAR> NAMES name PATHS paths... NO_DEFAULT_PATH)
find_library(<VAR> NAMES name)
Once one of the calls succeeds the result variable will be set
and stored in the cache so that no call will search again.
If the library found is a framework, then VAR will be set to the
full path to the framework <fullPath>/A.framework. When a full
path to a framework is used as a library, CMake will use a
-framework A, and a -F<fullPath> to link the framework to the
target.
find_package
Load settings for an external project.
find_package(<package> [version] [EXACT] [QUIET]
[[REQUIRED|COMPONENTS] [components...]]
[NO_POLICY_SCOPE])
Finds and loads settings from an external project. <pack-
age>_FOUND will be set to indicate whether the package was
found. When the package is found package-specific information
is provided through variables documented by the package itself.
The QUIET option disables messages if the package cannot be
found. The REQUIRED option stops processing with an error mes-
sage if the package cannot be found. A package-specific list of
components may be listed after the REQUIRED option or after the
COMPONENTS option if no REQUIRED option is given. The [version]
argument requests a version with which the package found should
be compatible (format is major[.minor[.patch[.tweak]]]). The
EXACT option requests that the version be matched exactly. If
no [version] and/or component list is given to a recursive invo-
cation inside a find-module, the corresponding arguments are
forwarded automatically from the outer call (including the EXACT
flag for [version]). Version support is currently provided only
on a package-by-package basis (details below).
User code should generally look for packages using the above
simple signature. The remainder of this command documentation
specifies the full command signature and details of the search
process. Project maintainers wishing to provide a package to be
found by this command are encouraged to read on.
The command has two modes by which it searches for packages:
"Module" mode and "Config" mode. Module mode is available when
the command is invoked with the above reduced signature. CMake
searches for a file called "Find<package>.cmake" in the
CMAKE_MODULE_PATH followed by the CMake installation. If the
file is found, it is read and processed by CMake. It is respon-
sible for finding the package, checking the version, and produc-
ing any needed messages. Many find-modules provide limited or
no support for versioning; check the module documentation. If
no module is found the command proceeds to Config mode.
The complete Config mode command signature is:
find_package(<package> [version] [EXACT] [QUIET]
[[REQUIRED|COMPONENTS] [components...]] [NO_MODULE]
[NO_POLICY_SCOPE]
[NAMES name1 [name2 ...]]
[CONFIGS config1 [config2 ...]]
[HINTS path1 [path2 ... ]]
[PATHS path1 [path2 ... ]]
[PATH_SUFFIXES suffix1 [suffix2 ...]]
[NO_DEFAULT_PATH]
[NO_CMAKE_ENVIRONMENT_PATH]
[NO_CMAKE_PATH]
[NO_SYSTEM_ENVIRONMENT_PATH]
[NO_CMAKE_PACKAGE_REGISTRY]
[NO_CMAKE_BUILDS_PATH]
[NO_CMAKE_SYSTEM_PATH]
[NO_CMAKE_SYSTEM_PACKAGE_REGISTRY]
[CMAKE_FIND_ROOT_PATH_BOTH |
ONLY_CMAKE_FIND_ROOT_PATH |
NO_CMAKE_FIND_ROOT_PATH])
The NO_MODULE option may be used to skip Module mode explicitly.
It is also implied by use of options not specified in the
reduced signature.
Config mode attempts to locate a configuration file provided by
the package to be found. A cache entry called <package>_DIR is
created to hold the directory containing the file. By default
the command searches for a package with the name <package>. If
the NAMES option is given the names following it are used
instead of <package>. The command searches for a file called
"<name>Config.cmake" or "<lower-case-name>-config.cmake" for
each name specified. A replacement set of possible configura-
tion file names may be given using the CONFIGS option. The
search procedure is specified below. Once found, the configura-
tion file is read and processed by CMake. Since the file is
provided by the package it already knows the location of package
contents. The full path to the configuration file is stored in
the cmake variable <package>_CONFIG.
All configuration files which have been considered by CMake
while searching for an installation of the package with an
appropriate version are stored in the cmake variable <pack-
age>_CONSIDERED_CONFIGS, the associated versions in <pack-
age>_CONSIDERED_VERSIONS.
If the package configuration file cannot be found CMake will
generate an error describing the problem unless the QUIET argu-
ment is specified. If REQUIRED is specified and the package is
not found a fatal error is generated and the configure step
stops executing. If <package>_DIR has been set to a directory
not containing a configuration file CMake will ignore it and
search from scratch.
When the [version] argument is given Config mode will only find
a version of the package that claims compatibility with the
requested version (format is major[.minor[.patch[.tweak]]]). If
the EXACT option is given only a version of the package claiming
an exact match of the requested version may be found. CMake
does not establish any convention for the meaning of version
numbers. Package version numbers are checked by "version" files
provided by the packages themselves. For a candidate package
configuration file "<config-file>.cmake" the corresponding ver-
sion file is located next to it and named either "<con-
fig-file>-version.cmake" or "<config-file>Version.cmake". If no
such version file is available then the configuration file is
assumed to not be compatible with any requested version. A
basic version file containing generic version matching code can
be created using the macro write_basic_config_version_file(),
see its documentation for more details. When a version file is
found it is loaded to check the requested version number. The
version file is loaded in a nested scope in which the following
variables have been defined:
PACKAGE_FIND_NAME = the <package> name
PACKAGE_FIND_VERSION = full requested version string
PACKAGE_FIND_VERSION_MAJOR = major version if requested, else 0
PACKAGE_FIND_VERSION_MINOR = minor version if requested, else 0
PACKAGE_FIND_VERSION_PATCH = patch version if requested, else 0
PACKAGE_FIND_VERSION_TWEAK = tweak version if requested, else 0
PACKAGE_FIND_VERSION_COUNT = number of version components, 0 to 4
The version file checks whether it satisfies the requested ver-
sion and sets these variables:
PACKAGE_VERSION = full provided version string
PACKAGE_VERSION_EXACT = true if version is exact match
PACKAGE_VERSION_COMPATIBLE = true if version is compatible
PACKAGE_VERSION_UNSUITABLE = true if unsuitable as any version
These variables are checked by the find_package command to
determine whether the configuration file provides an acceptable
version. They are not available after the find_package call
returns. If the version is acceptable the following variables
are set:
<package>_VERSION = full provided version string
<package>_VERSION_MAJOR = major version if provided, else 0
<package>_VERSION_MINOR = minor version if provided, else 0
<package>_VERSION_PATCH = patch version if provided, else 0
<package>_VERSION_TWEAK = tweak version if provided, else 0
<package>_VERSION_COUNT = number of version components, 0 to 4
and the corresponding package configuration file is loaded.
When multiple package configuration files are available whose
version files claim compatibility with the version requested it
is unspecified which one is chosen. No attempt is made to
choose a highest or closest version number.
Config mode provides an elaborate interface and search proce-
dure. Much of the interface is provided for completeness and
for use internally by find-modules loaded by Module mode. Most
user code should simply call
find_package(<package> [major[.minor]] [EXACT] [REQUIRED|QUIET])
in order to find a package. Package maintainers providing CMake
package configuration files are encouraged to name and install
them such that the procedure outlined below will find them with-
out requiring use of additional options.
CMake constructs a set of possible installation prefixes for the
package. Under each prefix several directories are searched for
a configuration file. The tables below show the directories
searched. Each entry is meant for installation trees following
Windows (W), UNIX (U), or Apple (A) conventions.
<prefix>/ (W)
<prefix>/(cmake|CMake)/ (W)
<prefix>/<name>*/ (W)
<prefix>/<name>*/(cmake|CMake)/ (W)
<prefix>/(lib/<arch>|lib|share)/cmake/<name>*/ (U)
<prefix>/(lib/<arch>|lib|share)/<name>*/ (U)
<prefix>/(lib/<arch>|lib|share)/<name>*/(cmake|CMake)/ (U)
On systems supporting OS X Frameworks and Application Bundles
the following directories are searched for frameworks or bundles
containing a configuration file:
<prefix>/<name>.framework/Resources/ (A)
<prefix>/<name>.framework/Resources/CMake/ (A)
<prefix>/<name>.framework/Versions/*/Resources/ (A)
<prefix>/<name>.framework/Versions/*/Resources/CMake/ (A)
<prefix>/<name>.app/Contents/Resources/ (A)
<prefix>/<name>.app/Contents/Resources/CMake/ (A)
In all cases the <name> is treated as case-insensitive and cor-
responds to any of the names specified (<package> or names given
by NAMES). Paths with lib/<arch> are enabled if
CMAKE_LIBRARY_ARCHITECTURE is set. If PATH_SUFFIXES is speci-
fied the suffixes are appended to each (W) or (U) directory
entry one-by-one.
This set of directories is intended to work in cooperation with
projects that provide configuration files in their installation
trees. Directories above marked with (W) are intended for
installations on Windows where the prefix may point at the top
of an application's installation directory. Those marked with
(U) are intended for installations on UNIX platforms where the
prefix is shared by multiple packages. This is merely a conven-
tion, so all (W) and (U) directories are still searched on all
platforms. Directories marked with (A) are intended for instal-
lations on Apple platforms. The cmake variables
CMAKE_FIND_FRAMEWORK and CMAKE_FIND_APPBUNDLE determine the
order of preference as specified below.
The set of installation prefixes is constructed using the fol-
lowing steps. If NO_DEFAULT_PATH is specified all NO_* options
are enabled.
1. Search paths specified in cmake-specific cache variables.
These are intended to be used on the command line with a
-DVAR=value. This can be skipped if NO_CMAKE_PATH is passed.
CMAKE_PREFIX_PATH
CMAKE_FRAMEWORK_PATH
CMAKE_APPBUNDLE_PATH
2. Search paths specified in cmake-specific environment vari-
ables. These are intended to be set in the user's shell config-
uration. This can be skipped if NO_CMAKE_ENVIRONMENT_PATH is
passed.
<package>_DIR
CMAKE_PREFIX_PATH
CMAKE_FRAMEWORK_PATH
CMAKE_APPBUNDLE_PATH
3. Search paths specified by the HINTS option. These should be
paths computed by system introspection, such as a hint provided
by the location of another item already found. Hard-coded
guesses should be specified with the PATHS option.
4. Search the standard system environment variables. This can be
skipped if NO_SYSTEM_ENVIRONMENT_PATH is passed. Path entries
ending in "/bin" or "/sbin" are automatically converted to their
parent directories.
PATH
5. Search project build trees recently configured in a CMake
GUI. This can be skipped if NO_CMAKE_BUILDS_PATH is passed. It
is intended for the case when a user is building multiple depen-
dent projects one after another.
6. Search paths stored in the CMake user package registry. This
can be skipped if NO_CMAKE_PACKAGE_REGISTRY is passed. On Win-
dows a <package> may appear under registry key
HKEY_CURRENT_USER\Software\Kitware\CMake\Packages\<package>
as a REG_SZ value, with arbitrary name, that specifies the
directory containing the package configuration file. On UNIX
platforms a <package> may appear under the directory
~/.cmake/packages/<package>
as a file, with arbitrary name, whose content specifies the
directory containing the package configuration file. See the
export(PACKAGE) command to create user package registry entries
for project build trees.
7. Search cmake variables defined in the Platform files for the
current system. This can be skipped if NO_CMAKE_SYSTEM_PATH is
passed.
CMAKE_SYSTEM_PREFIX_PATH
CMAKE_SYSTEM_FRAMEWORK_PATH
CMAKE_SYSTEM_APPBUNDLE_PATH
8. Search paths stored in the CMake system package registry.
This can be skipped if NO_CMAKE_SYSTEM_PACKAGE_REGISTRY is
passed. On Windows a <package> may appear under registry key
HKEY_LOCAL_MACHINE\Software\Kitware\CMake\Packages\<package>
as a REG_SZ value, with arbitrary name, that specifies the
directory containing the package configuration file. There is
no system package registry on non-Windows platforms.
9. Search paths specified by the PATHS option. These are typi-
cally hard-coded guesses.
On Darwin or systems supporting OS X Frameworks, the cmake vari-
able CMAKE_FIND_FRAMEWORK can be set to empty or one of the
following:
"FIRST" - Try to find frameworks before standard
libraries or headers. This is the default on Darwin.
"LAST" - Try to find frameworks after standard
libraries or headers.
"ONLY" - Only try to find frameworks.
"NEVER" - Never try to find frameworks.
On Darwin or systems supporting OS X Application Bundles, the
cmake variable CMAKE_FIND_APPBUNDLE can be set to empty or one
of the following:
"FIRST" - Try to find application bundles before standard
programs. This is the default on Darwin.
"LAST" - Try to find application bundles after standard
programs.
"ONLY" - Only try to find application bundles.
"NEVER" - Never try to find application bundles.
The CMake variable CMAKE_FIND_ROOT_PATH specifies one or more
directories to be prepended to all other search directories.
This effectively "re-roots" the entire search under given loca-
tions. By default it is empty. It is especially useful when
cross-compiling to point to the root directory of the target
environment and CMake will search there too. By default at first
the directories listed in CMAKE_FIND_ROOT_PATH and then the
non-rooted directories will be searched. The default behavior
can be adjusted by setting CMAKE_FIND_ROOT_PATH_MODE_PACKAGE.
This behavior can be manually overridden on a per-call basis. By
using CMAKE_FIND_ROOT_PATH_BOTH the search order will be as
described above. If NO_CMAKE_FIND_ROOT_PATH is used then
CMAKE_FIND_ROOT_PATH will not be used. If
ONLY_CMAKE_FIND_ROOT_PATH is used then only the re-rooted direc-
tories will be searched.
The default search order is designed to be most-specific to
least-specific for common use cases. Projects may override the
order by simply calling the command multiple times and using the
NO_* options:
find_package(<package> PATHS paths... NO_DEFAULT_PATH)
find_package(<package>)
Once one of the calls succeeds the result variable will be set
and stored in the cache so that no call will search again.
Every non-REQUIRED find_package() call can be disabled by set-
ting the variable CMAKE_DISABLE_FIND_PACKAGE_<package> to TRUE.
See the documentation for the CMAKE_DISABLE_FIND_PACKAGE_<pack-
age> variable for more information.
See the cmake_policy() command documentation for discussion of
the NO_POLICY_SCOPE option.
find_path
Find the directory containing a file.
find_path(<VAR> name1 [path1 path2 ...])
This is the short-hand signature for the command that is suffi-
cient in many cases. It is the same as find_path(<VAR> name1
[PATHS path1 path2 ...])
find_path(
<VAR>
name | NAMES name1 [name2 ...]
[HINTS path1 [path2 ... ENV var]]
[PATHS path1 [path2 ... ENV var]]
[PATH_SUFFIXES suffix1 [suffix2 ...]]
[DOC "cache documentation string"]
[NO_DEFAULT_PATH]
[NO_CMAKE_ENVIRONMENT_PATH]
[NO_CMAKE_PATH]
[NO_SYSTEM_ENVIRONMENT_PATH]
[NO_CMAKE_SYSTEM_PATH]
[CMAKE_FIND_ROOT_PATH_BOTH |
ONLY_CMAKE_FIND_ROOT_PATH |
NO_CMAKE_FIND_ROOT_PATH]
)
This command is used to find a directory containing the named
file. A cache entry named by <VAR> is created to store the
result of this command. If the file in a directory is found the
result is stored in the variable and the search will not be
repeated unless the variable is cleared. If nothing is found,
the result will be <VAR>-NOTFOUND, and the search will be
attempted again the next time find_path is invoked with the same
variable. The name of the file in a directory that is searched
for is specified by the names listed after the NAMES argument.
Additional search locations can be specified after the PATHS
argument. If ENV var is found in the HINTS or PATHS section the
environment variable var will be read and converted from a sys-
tem environment variable to a cmake style list of paths. For
example ENV PATH would be a way to list the system path vari-
able. The argument after DOC will be used for the documentation
string in the cache. PATH_SUFFIXES specifies additional subdi-
rectories to check below each search path.
If NO_DEFAULT_PATH is specified, then no additional paths are
added to the search. If NO_DEFAULT_PATH is not specified, the
search process is as follows:
1. Search paths specified in cmake-specific cache variables.
These are intended to be used on the command line with a
-DVAR=value. This can be skipped if NO_CMAKE_PATH is passed.
<prefix>/include for each <prefix> in CMAKE_PREFIX_PATH
CMAKE_INCLUDE_PATH
CMAKE_FRAMEWORK_PATH
2. Search paths specified in cmake-specific environment vari-
ables. These are intended to be set in the user's shell config-
uration. This can be skipped if NO_CMAKE_ENVIRONMENT_PATH is
passed.
<prefix>/include for each <prefix> in CMAKE_PREFIX_PATH
CMAKE_INCLUDE_PATH
CMAKE_FRAMEWORK_PATH
3. Search the paths specified by the HINTS option. These should
be paths computed by system introspection, such as a hint pro-
vided by the location of another item already found. Hard-coded
guesses should be specified with the PATHS option.
4. Search the standard system environment variables. This can be
skipped if NO_SYSTEM_ENVIRONMENT_PATH is an argument.
PATH
INCLUDE
5. Search cmake variables defined in the Platform files for the
current system. This can be skipped if NO_CMAKE_SYSTEM_PATH is
passed.
<prefix>/include for each <prefix> in CMAKE_SYSTEM_PREFIX_PATH
CMAKE_SYSTEM_INCLUDE_PATH
CMAKE_SYSTEM_FRAMEWORK_PATH
6. Search the paths specified by the PATHS option or in the
short-hand version of the command. These are typically
hard-coded guesses.
On Darwin or systems supporting OS X Frameworks, the cmake vari-
able CMAKE_FIND_FRAMEWORK can be set to empty or one of the
following:
"FIRST" - Try to find frameworks before standard
libraries or headers. This is the default on Darwin.
"LAST" - Try to find frameworks after standard
libraries or headers.
"ONLY" - Only try to find frameworks.
"NEVER" - Never try to find frameworks.
On Darwin or systems supporting OS X Application Bundles, the
cmake variable CMAKE_FIND_APPBUNDLE can be set to empty or one
of the following:
"FIRST" - Try to find application bundles before standard
programs. This is the default on Darwin.
"LAST" - Try to find application bundles after standard
programs.
"ONLY" - Only try to find application bundles.
"NEVER" - Never try to find application bundles.
The CMake variable CMAKE_FIND_ROOT_PATH specifies one or more
directories to be prepended to all other search directories.
This effectively "re-roots" the entire search under given loca-
tions. By default it is empty. It is especially useful when
cross-compiling to point to the root directory of the target
environment and CMake will search there too. By default at first
the directories listed in CMAKE_FIND_ROOT_PATH and then the
non-rooted directories will be searched. The default behavior
can be adjusted by setting CMAKE_FIND_ROOT_PATH_MODE_INCLUDE.
This behavior can be manually overridden on a per-call basis. By
using CMAKE_FIND_ROOT_PATH_BOTH the search order will be as
described above. If NO_CMAKE_FIND_ROOT_PATH is used then
CMAKE_FIND_ROOT_PATH will not be used. If
ONLY_CMAKE_FIND_ROOT_PATH is used then only the re-rooted direc-
tories will be searched.
The default search order is designed to be most-specific to
least-specific for common use cases. Projects may override the
order by simply calling the command multiple times and using the
NO_* options:
find_path(<VAR> NAMES name PATHS paths... NO_DEFAULT_PATH)
find_path(<VAR> NAMES name)
Once one of the calls succeeds the result variable will be set
and stored in the cache so that no call will search again.
When searching for frameworks, if the file is specified as
A/b.h, then the framework search will look for A.framework/Head-
ers/b.h. If that is found the path will be set to the path to
the framework. CMake will convert this to the correct -F option
to include the file.
find_program
Find an executable program.
find_program(<VAR> name1 [path1 path2 ...])
This is the short-hand signature for the command that is suffi-
cient in many cases. It is the same as find_program(<VAR> name1
[PATHS path1 path2 ...])
find_program(
<VAR>
name | NAMES name1 [name2 ...]
[HINTS path1 [path2 ... ENV var]]
[PATHS path1 [path2 ... ENV var]]
[PATH_SUFFIXES suffix1 [suffix2 ...]]
[DOC "cache documentation string"]
[NO_DEFAULT_PATH]
[NO_CMAKE_ENVIRONMENT_PATH]
[NO_CMAKE_PATH]
[NO_SYSTEM_ENVIRONMENT_PATH]
[NO_CMAKE_SYSTEM_PATH]
[CMAKE_FIND_ROOT_PATH_BOTH |
ONLY_CMAKE_FIND_ROOT_PATH |
NO_CMAKE_FIND_ROOT_PATH]
)
This command is used to find a program. A cache entry named by
<VAR> is created to store the result of this command. If the
program is found the result is stored in the variable and the
search will not be repeated unless the variable is cleared. If
nothing is found, the result will be <VAR>-NOTFOUND, and the
search will be attempted again the next time find_program is
invoked with the same variable. The name of the program that is
searched for is specified by the names listed after the NAMES
argument. Additional search locations can be specified after
the PATHS argument. If ENV var is found in the HINTS or PATHS
section the environment variable var will be read and converted
from a system environment variable to a cmake style list of
paths. For example ENV PATH would be a way to list the system
path variable. The argument after DOC will be used for the docu-
mentation string in the cache. PATH_SUFFIXES specifies addi-
tional subdirectories to check below each search path.
If NO_DEFAULT_PATH is specified, then no additional paths are
added to the search. If NO_DEFAULT_PATH is not specified, the
search process is as follows:
1. Search paths specified in cmake-specific cache variables.
These are intended to be used on the command line with a
-DVAR=value. This can be skipped if NO_CMAKE_PATH is passed.
<prefix>/[s]bin for each <prefix> in CMAKE_PREFIX_PATH
CMAKE_PROGRAM_PATH
CMAKE_APPBUNDLE_PATH
2. Search paths specified in cmake-specific environment vari-
ables. These are intended to be set in the user's shell config-
uration. This can be skipped if NO_CMAKE_ENVIRONMENT_PATH is
passed.
<prefix>/[s]bin for each <prefix> in CMAKE_PREFIX_PATH
CMAKE_PROGRAM_PATH
CMAKE_APPBUNDLE_PATH
3. Search the paths specified by the HINTS option. These should
be paths computed by system introspection, such as a hint pro-
vided by the location of another item already found. Hard-coded
guesses should be specified with the PATHS option.
4. Search the standard system environment variables. This can be
skipped if NO_SYSTEM_ENVIRONMENT_PATH is an argument.
PATH
5. Search cmake variables defined in the Platform files for the
current system. This can be skipped if NO_CMAKE_SYSTEM_PATH is
passed.
<prefix>/[s]bin for each <prefix> in CMAKE_SYSTEM_PREFIX_PATH
CMAKE_SYSTEM_PROGRAM_PATH
CMAKE_SYSTEM_APPBUNDLE_PATH
6. Search the paths specified by the PATHS option or in the
short-hand version of the command. These are typically
hard-coded guesses.
On Darwin or systems supporting OS X Frameworks, the cmake vari-
able CMAKE_FIND_FRAMEWORK can be set to empty or one of the
following:
"FIRST" - Try to find frameworks before standard
libraries or headers. This is the default on Darwin.
"LAST" - Try to find frameworks after standard
libraries or headers.
"ONLY" - Only try to find frameworks.
"NEVER" - Never try to find frameworks.
On Darwin or systems supporting OS X Application Bundles, the
cmake variable CMAKE_FIND_APPBUNDLE can be set to empty or one
of the following:
"FIRST" - Try to find application bundles before standard
programs. This is the default on Darwin.
"LAST" - Try to find application bundles after standard
programs.
"ONLY" - Only try to find application bundles.
"NEVER" - Never try to find application bundles.
The CMake variable CMAKE_FIND_ROOT_PATH specifies one or more
directories to be prepended to all other search directories.
This effectively "re-roots" the entire search under given loca-
tions. By default it is empty. It is especially useful when
cross-compiling to point to the root directory of the target
environment and CMake will search there too. By default at first
the directories listed in CMAKE_FIND_ROOT_PATH and then the
non-rooted directories will be searched. The default behavior
can be adjusted by setting CMAKE_FIND_ROOT_PATH_MODE_PROGRAM.
This behavior can be manually overridden on a per-call basis. By
using CMAKE_FIND_ROOT_PATH_BOTH the search order will be as
described above. If NO_CMAKE_FIND_ROOT_PATH is used then
CMAKE_FIND_ROOT_PATH will not be used. If
ONLY_CMAKE_FIND_ROOT_PATH is used then only the re-rooted direc-
tories will be searched.
The default search order is designed to be most-specific to
least-specific for common use cases. Projects may override the
order by simply calling the command multiple times and using the
NO_* options:
find_program(<VAR> NAMES name PATHS paths... NO_DEFAULT_PATH)
find_program(<VAR> NAMES name)
Once one of the calls succeeds the result variable will be set
and stored in the cache so that no call will search again.
foreach
Evaluate a group of commands for each value in a list.
foreach(loop_var arg1 arg2 ...)
COMMAND1(ARGS ...)
COMMAND2(ARGS ...)
...
endforeach(loop_var)
All commands between foreach and the matching endforeach are
recorded without being invoked. Once the endforeach is evalu-
ated, the recorded list of commands is invoked once for each
argument listed in the original foreach command. Before each
iteration of the loop "${loop_var}" will be set as a variable
with the current value in the list.
foreach(loop_var RANGE total)
foreach(loop_var RANGE start stop [step])
Foreach can also iterate over a generated range of numbers.
There are three types of this iteration:
* When specifying single number, the range will have elements 0
to "total".
* When specifying two numbers, the range will have elements from
the first number to the second number.
* The third optional number is the increment used to iterate
from the first number to the second number.
foreach(loop_var IN [LISTS [list1 [...]]]
[ITEMS [item1 [...]]])
Iterates over a precise list of items. The LISTS option names
list-valued variables to be traversed, including empty elements
(an empty string is a zero-length list). The ITEMS option ends
argument parsing and includes all arguments following it in the
iteration.
function
Start recording a function for later invocation as a command.
function(<name> [arg1 [arg2 [arg3 ...]]])
COMMAND1(ARGS ...)
COMMAND2(ARGS ...)
...
endfunction(<name>)
Define a function named <name> that takes arguments named arg1
arg2 arg3 (...). Commands listed after function, but before the
matching endfunction, are not invoked until the function is
invoked. When it is invoked, the commands recorded in the func-
tion are first modified by replacing formal parameters (${arg1})
with the arguments passed, and then invoked as normal commands.
In addition to referencing the formal parameters you can refer-
ence the variable ARGC which will be set to the number of argu-
ments passed into the function as well as ARGV0 ARGV1 ARGV2 ...
which will have the actual values of the arguments passed in.
This facilitates creating functions with optional arguments.
Additionally ARGV holds the list of all arguments given to the
function and ARGN holds the list of argument past the last
expected argument.
See the cmake_policy() command documentation for the behavior of
policies inside functions.
get_cmake_property
Get a property of the CMake instance.
get_cmake_property(VAR property)
Get a property from the CMake instance. The value of the prop-
erty is stored in the variable VAR. If the property is not
found, VAR will be set to "NOTFOUND". Some supported properties
include: VARIABLES, CACHE_VARIABLES, COMMANDS, MACROS, and COM-
PONENTS.
See also the more general get_property() command.
get_directory_property
Get a property of DIRECTORY scope.
get_directory_property(<variable> [DIRECTORY <dir>] <prop-name>)
Store a property of directory scope in the named variable. If
the property is not defined the empty-string is returned. The
DIRECTORY argument specifies another directory from which to
retrieve the property value. The specified directory must have
already been traversed by CMake.
get_directory_property(<variable> [DIRECTORY <dir>]
DEFINITION <var-name>)
Get a variable definition from a directory. This form is useful
to get a variable definition from another directory.
See also the more general get_property() command.
get_filename_component
Get a specific component of a full filename.
get_filename_component(<VAR> FileName
PATH|ABSOLUTE|NAME|EXT|NAME_WE|REALPATH
[CACHE])
Set <VAR> to be the path (PATH), file name (NAME), file exten-
sion (EXT), file name without extension (NAME_WE) of FileName,
the full path (ABSOLUTE), or the full path with all symlinks
resolved (REALPATH). Note that the path is converted to Unix
slashes format and has no trailing slashes. The longest file
extension is always considered. If the optional CACHE argument
is specified, the result variable is added to the cache.
get_filename_component(<VAR> FileName
PROGRAM [PROGRAM_ARGS <ARG_VAR>]
[CACHE])
The program in FileName will be found in the system search path
or left as a full path. If PROGRAM_ARGS is present with PRO-
GRAM, then any command-line arguments present in the FileName
string are split from the program name and stored in <ARG_VAR>.
This is used to separate a program name from its arguments in a
command line string.
get_property
Get a property.
get_property(<variable>
<GLOBAL |
DIRECTORY [dir] |
TARGET <target> |
SOURCE <source> |
TEST <test> |
CACHE <entry> |
VARIABLE>
PROPERTY <name>
[SET | DEFINED | BRIEF_DOCS | FULL_DOCS])
Get one property from one object in a scope. The first argument
specifies the variable in which to store the result. The second
argument determines the scope from which to get the property.
It must be one of the following:
GLOBAL scope is unique and does not accept a name.
DIRECTORY scope defaults to the current directory but another
directory (already processed by CMake) may be named by full or
relative path.
TARGET scope must name one existing target.
SOURCE scope must name one source file.
TEST scope must name one existing test.
CACHE scope must name one cache entry.
VARIABLE scope is unique and does not accept a name.
The required PROPERTY option is immediately followed by the name
of the property to get. If the property is not set an empty
value is returned. If the SET option is given the variable is
set to a boolean value indicating whether the property has been
set. If the DEFINED option is given the variable is set to a
boolean value indicating whether the property has been defined
such as with define_property. If BRIEF_DOCS or FULL_DOCS is
given then the variable is set to a string containing documenta-
tion for the requested property. If documentation is requested
for a property that has not been defined NOTFOUND is returned.
if Conditionally execute a group of commands.
if(expression)
# then section.
COMMAND1(ARGS ...)
COMMAND2(ARGS ...)
...
elseif(expression2)
# elseif section.
COMMAND1(ARGS ...)
COMMAND2(ARGS ...)
...
else(expression)
# else section.
COMMAND1(ARGS ...)
COMMAND2(ARGS ...)
...
endif(expression)
Evaluates the given expression. If the result is true, the com-
mands in the THEN section are invoked. Otherwise, the commands
in the else section are invoked. The elseif and else sections
are optional. You may have multiple elseif clauses. Note that
the expression in the else and endif clause is optional. Long
expressions can be used and there is a traditional order of
precedence. Parenthetical expressions are evaluated first fol-
lowed by unary operators such as EXISTS, COMMAND, and DEFINED.
Then any EQUAL, LESS, GREATER, STRLESS, STRGREATER, STREQUAL,
MATCHES will be evaluated. Then NOT operators and finally AND,
OR operators will be evaluated. Possible expressions are:
if(<constant>)
True if the constant is 1, ON, YES, TRUE, Y, or a non-zero num-
ber. False if the constant is 0, OFF, NO, FALSE, N, IGNORE, "",
or ends in the suffix '-NOTFOUND'. Named boolean constants are
case-insensitive. If the argument is not one of these con-
stants, it is treated as a variable:
if(<variable>)
True if the variable is defined to a value that is not a false
constant. False otherwise.
if(NOT <expression>)
True if the expression is not true.
if(<expr1> AND <expr2>)
True if both expressions would be considered true individually.
if(<expr1> OR <expr2>)
True if either expression would be considered true individually.
if(COMMAND command-name)
True if the given name is a command, macro or function that can
be invoked.
if(POLICY policy-id)
True if the given name is an existing policy (of the form
CMP<NNNN>).
if(TARGET target-name)
True if the given name is an existing target, built or imported.
if(EXISTS file-name)
if(EXISTS directory-name)
True if the named file or directory exists. Behavior is
well-defined only for full paths.
if(file1 IS_NEWER_THAN file2)
True if file1 is newer than file2 or if one of the two files
doesn't exist. Behavior is well-defined only for full paths.
if(IS_DIRECTORY directory-name)
True if the given name is a directory. Behavior is well-defined
only for full paths.
if(IS_SYMLINK file-name)
True if the given name is a symbolic link. Behavior is
well-defined only for full paths.
if(IS_ABSOLUTE path)
True if the given path is an absolute path.
if(<variable|string> MATCHES regex)
True if the given string or variable's value matches the given
regular expression.
if(<variable|string> LESS <variable|string>)
if(<variable|string> GREATER <variable|string>)
if(<variable|string> EQUAL <variable|string>)
True if the given string or variable's value is a valid number
and the inequality or equality is true.
if(<variable|string> STRLESS <variable|string>)
if(<variable|string> STRGREATER <variable|string>)
if(<variable|string> STREQUAL <variable|string>)
True if the given string or variable's value is lexicographi-
cally less (or greater, or equal) than the string or variable on
the right.
if(<variable|string> VERSION_LESS <variable|string>)
if(<variable|string> VERSION_EQUAL <variable|string>)
if(<variable|string> VERSION_GREATER <variable|string>)
Component-wise integer version number comparison (version format
is major[.minor[.patch[.tweak]]]).
if(DEFINED <variable>)
True if the given variable is defined. It does not matter if the
variable is true or false just if it has been set.
if((expression) AND (expression OR (expression)))
The expressions inside the parenthesis are evaluated first and
then the remaining expression is evaluated as in the previous
examples. Where there are nested parenthesis the innermost are
evaluated as part of evaluating the expression that contains
them.
The if command was written very early in CMake's history, pre-
dating the ${} variable evaluation syntax, and for convenience
evaluates variables named by its arguments as shown in the above
signatures. Note that normal variable evaluation with ${}
applies before the if command even receives the arguments.
Therefore code like
set(var1 OFF)
set(var2 "var1")
if(${var2})
appears to the if command as
if(var1)
and is evaluated according to the if(<variable>) case documented
above. The result is OFF which is false. However, if we remove
the ${} from the example then the command sees
if(var2)
which is true because var2 is defined to "var1" which is not a
false constant.
Automatic evaluation applies in the other cases whenever the
above-documented signature accepts <variable|string>:
1) The left hand argument to MATCHES is first checked to see if
it is a defined variable, if so the variable's value is used,
otherwise the original value is used.
2) If the left hand argument to MATCHES is missing it returns
false without error
3) Both left and right hand arguments to LESS GREATER EQUAL are
independently tested to see if they are defined variables, if so
their defined values are used otherwise the original value is
used.
4) Both left and right hand arguments to STRLESS STREQUAL STR-
GREATER are independently tested to see if they are defined
variables, if so their defined values are used otherwise the
original value is used.
5) Both left and right hand argumemnts to VERSION_LESS VER-
SION_EQUAL VERSION_GREATER are independently tested to see if
they are defined variables, if so their defined values are used
otherwise the original value is used.
6) The right hand argument to NOT is tested to see if it is a
boolean constant, if so the value is used, otherwise it is
assumed to be a variable and it is dereferenced.
7) The left and right hand arguments to AND OR are independently
tested to see if they are boolean constants, if so they are used
as such, otherwise they are assumed to be variables and are
dereferenced.
include
Read CMake listfile code from the given file.
include(<file|module> [OPTIONAL] [RESULT_VARIABLE <VAR>]
[NO_POLICY_SCOPE])
Reads CMake listfile code from the given file. Commands in the
file are processed immediately as if they were written in place
of the include command. If OPTIONAL is present, then no error
is raised if the file does not exist. If RESULT_VARIABLE is
given the variable will be set to the full filename which has
been included or NOTFOUND if it failed.
If a module is specified instead of a file, the file with name
<modulename>.cmake is searched first in CMAKE_MODULE_PATH, then
in the CMake module directory. There is one exception to this:
if the file which calls include() is located itself in the CMake
module directory, then first the CMake module directory is
searched and CMAKE_MODULE_PATH afterwards. See also policy
CMP0017.
See the cmake_policy() command documentation for discussion of
the NO_POLICY_SCOPE option.
list List operations.
list(LENGTH <list> <output variable>)
list(GET <list> <element index> [<element index> ...]
<output variable>)
list(APPEND <list> <element> [<element> ...])
list(FIND <list> <value> <output variable>)
list(INSERT <list> <element_index> <element> [<element> ...])
list(REMOVE_ITEM <list> <value> [<value> ...])
list(REMOVE_AT <list> <index> [<index> ...])
list(REMOVE_DUPLICATES <list>)
list(REVERSE <list>)
list(SORT <list>)
LENGTH will return a given list's length.
GET will return list of elements specified by indices from the
list.
APPEND will append elements to the list.
FIND will return the index of the element specified in the list
or -1 if it wasn't found.
INSERT will insert elements to the list to the specified loca-
tion.
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.
REMOVE_DUPLICATES will remove duplicated items in the list.
REVERSE reverses the contents of the list in-place.
SORT sorts the list in-place alphabetically.
The list subcommands APPEND, INSERT, 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
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 SET with PARENT_SCOPE, 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.
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 repre-
senting 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.
macro Start recording a macro for later invocation as a command.
macro(<name> [arg1 [arg2 [arg3 ...]]])
COMMAND1(ARGS ...)
COMMAND2(ARGS ...)
...
endmacro(<name>)
Define a macro named <name> that takes arguments named arg1 arg2
arg3 (...). Commands listed after macro, but before the match-
ing endmacro, are not invoked until the macro is invoked. When
it is invoked, the commands recorded in the macro are first mod-
ified by replacing formal parameters (${arg1}) with the argu-
ments passed, and then invoked as normal commands. In addition
to referencing the formal parameters you can reference the val-
ues ${ARGC} which will be set to the number of arguments passed
into the function as well as ${ARGV0} ${ARGV1} ${ARGV2} ...
which will have the actual values of the arguments passed in.
This facilitates creating macros with optional arguments. Addi-
tionally ${ARGV} holds the list of all arguments given to the
macro and ${ARGN} holds the list of argument past the last
expected argument. Note that the parameters to a macro and val-
ues such as ARGN are not variables in the usual CMake sense.
They are string replacements much like the c preprocessor would
do with a macro. If you want true CMake variables you should
look at the function command.
See the cmake_policy() command documentation for the behavior of
policies inside macros.
make_directory
Deprecated. Use the file(MAKE_DIRECTORY ) command instead.
make_directory(directory)
Creates the specified directory. Full paths should be given.
Any parent directories that do not exist will also be created.
Use with care.
mark_as_advanced
Mark cmake cached variables as advanced.
mark_as_advanced([CLEAR|FORCE] VAR VAR2 VAR...)
Mark the named cached variables as advanced. An advanced vari-
able will not be displayed in any of the cmake GUIs unless the
show advanced option is on. If CLEAR is the first argument
advanced variables are changed back to unadvanced. If FORCE is
the first argument, then the variable is made advanced. If nei-
ther FORCE nor CLEAR is specified, new values will be marked as
advanced, but if the variable already has an
advanced/non-advanced state, it will not be changed.
It does nothing in script mode.
math Mathematical expressions.
math(EXPR <output variable> <math expression>)
EXPR evaluates mathematical expression and return result in the
output variable. Example mathematical expression is '5 * ( 10 +
13 )'. Supported operators are + - * / % | & ^ ~ << >> * / %.
They have the same meaning as they do in c code.
message
Display a message to the user.
message([STATUS|WARNING|AUTHOR_WARNING|FATAL_ERROR|SEND_ERROR]
"message to display" ...)
The optional keyword determines the type of message:
(none) = Important information
STATUS = Incidental information
WARNING = CMake Warning, continue processing
AUTHOR_WARNING = CMake Warning (dev), continue processing
SEND_ERROR = CMake Error, continue but skip generation
FATAL_ERROR = CMake Error, stop all processing
The CMake command-line tool displays STATUS messages on stdout
and all other message types on stderr. The CMake GUI displays
all messages in its log area. The interactive dialogs (ccmake
and CMakeSetup) show STATUS messages one at a time on a status
line and other messages in interactive pop-up boxes.
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.
option Provides an option that the user can optionally select.
option(<option_variable> "help string describing option"
[initial value])
Provide an option for the user to select as ON or OFF. If no
initial value is provided, OFF is used.
If you have options that depend on the values of other options,
see the module help for CMakeDependentOption.
remove Deprecated. Use the list(REMOVE_ITEM ) command instead.
remove(VAR VALUE VALUE ...)
Removes VALUE from the variable VAR. This is typically used to
remove entries from a vector (e.g. semicolon separated list).
VALUE is expanded.
return Return from a file, directory or function.
return()
Returns from a file, directory or function. When this command is
encountered in an included file (via include() or find_pack-
age()), it causes processing of the current file to stop and
control is returned to the including file. If it is encountered
in a file which is not included by another file, e.g. a CMake-
Lists.txt, control is returned to the parent directory if there
is one. If return is called in a function, control is returned
to the caller of the function. Note that a macro is not a func-
tion and does not handle return like a function does.
separate_arguments
Parse space-separated arguments into a semicolon-separated list.
separate_arguments(<var> <UNIX|WINDOWS>_COMMAND "<args>")
Parses a unix- or windows-style command-line string "<args>" and
stores a semicolon-separated list of the arguments in <var>.
The entire command line must be given in one "<args>" argument.
The UNIX_COMMAND mode separates arguments by unquoted white-
space. It recognizes both single-quote and double-quote pairs.
A backslash escapes the next literal character (\" is "); there
are no special escapes (\n is just n).
The WINDOWS_COMMAND mode parses a windows command-line using the
same syntax the runtime library uses to construct argv at
startup. It separates arguments by whitespace that is not dou-
ble-quoted. Backslashes are literal unless they precede dou-
ble-quotes. See the MSDN article "Parsing C Command-Line Argu-
ments" for details.
separate_arguments(VARIABLE)
Convert the value of VARIABLE to a semi-colon separated list.
All spaces are replaced with ';'. This helps with generating
command lines.
set Set a CMAKE variable to a given value.
set(<variable> <value>
[[CACHE <type> <docstring> [FORCE]] | PARENT_SCOPE])
Within CMake sets <variable> to the value <value>. <value> is
expanded before <variable> is set to it. If CACHE is present,
then the <variable> is put in the cache. <type> and <docstring>
are then required. <type> is used by the CMake GUI to choose a
widget with which the user sets a value. The value for <type>
may be one of
FILEPATH = File chooser dialog.
PATH = Directory chooser dialog.
STRING = Arbitrary string.
BOOL = Boolean ON/OFF checkbox.
INTERNAL = No GUI entry (used for persistent variables).
If <type> is INTERNAL, then the <value> is always written into
the cache, replacing any values existing in the cache. If it is
not a cache variable, then this always writes into the current
makefile. The FORCE option will overwrite the cache value remov-
ing any changes by the user.
If PARENT_SCOPE is present, the variable will be set in the
scope above the current scope. Each new directory or function
creates a new scope. This command will set the value of a vari-
able into the parent directory or calling function (whichever is
applicable to the case at hand).
If <value> is not specified then the variable is removed instead
of set. See also: the unset() command.
set(<variable> <value1> ... <valueN>)
In this case <variable> is set to a semicolon separated list of
values.
<variable> can be an environment variable such as:
set( ENV{PATH} /home/martink )
in which case the environment variable will be set.
set_directory_properties
Set a property of the directory.
set_directory_properties(PROPERTIES prop1 value1 prop2 value2)
Set a property for the current directory and subdirectories. If
the property is not found, CMake will report an error. The prop-
erties include: INCLUDE_DIRECTORIES, LINK_DIRECTORIES,
INCLUDE_REGULAR_EXPRESSION, and ADDITIONAL_MAKE_CLEAN_FILES.
ADDITIONAL_MAKE_CLEAN_FILES is a list of files that will be
cleaned as a part of "make clean" stage.
set_property
Set a named property in a given scope.
set_property(<GLOBAL |
DIRECTORY [dir] |
TARGET [target1 [target2 ...]] |
SOURCE [src1 [src2 ...]] |
TEST [test1 [test2 ...]] |
CACHE [entry1 [entry2 ...]]>
[APPEND] [APPEND_STRING]
PROPERTY <name> [value1 [value2 ...]])
Set one property on zero or more objects of a scope. The first
argument determines the scope in which the property is set. It
must be one of the following:
GLOBAL scope is unique and does not accept a name.
DIRECTORY scope defaults to the current directory but another
directory (already processed by CMake) may be named by full or
relative path.
TARGET scope may name zero or more existing targets.
SOURCE scope may name zero or more source files. Note that
source file properties are visible only to targets added in the
same directory (CMakeLists.txt).
TEST scope may name zero or more existing tests.
CACHE scope must name zero or more cache existing entries.
The required PROPERTY option is immediately followed by the name
of the property to set. Remaining arguments are used to compose
the property value in the form of a semicolon-separated list.
If the APPEND option is given the list is appended to any exist-
ing property value.If the APPEND_STRING option is given the
string is append to any existing property value as string, i.e.
it results in a longer string and not a list of strings.
site_name
Set the given variable to the name of the computer.
site_name(variable)
string String operations.
string(REGEX MATCH <regular_expression>
<output variable> <input> [<input>...])
string(REGEX MATCHALL <regular_expression>
<output variable> <input> [<input>...])
string(REGEX REPLACE <regular_expression>
<replace_expression> <output variable>
<input> [<input>...])
string(REPLACE <match_string>
<replace_string> <output variable>
<input> [<input>...])
string(COMPARE EQUAL <string1> <string2> <output variable>)
string(COMPARE NOTEQUAL <string1> <string2> <output variable>)
string(COMPARE LESS <string1> <string2> <output variable>)
string(COMPARE GREATER <string1> <string2> <output variable>)
string(ASCII <number> [<number> ...] <output variable>)
string(CONFIGURE <string1> <output variable>
[@ONLY] [ESCAPE_QUOTES])
string(TOUPPER <string1> <output variable>)
string(TOLOWER <string1> <output variable>)
string(LENGTH <string> <output variable>)
string(SUBSTRING <string> <begin> <length> <output variable>)
string(STRIP <string> <output variable>)
string(RANDOM [LENGTH <length>] [ALPHABET <alphabet>]
[RANDOM_SEED <seed>] <output variable>)
string(FIND <string> <substring> <output variable> [REVERSE])
REGEX MATCH will match the regular expression once and store the
match in the output variable.
REGEX MATCHALL will match the regular expression as many times
as possible and store the matches in the output variable as a
list.
REGEX REPLACE will match the regular expression as many times as
possible and substitute the replacement expression for the match
in the output. The replace expression may refer to paren-delim-
ited subexpressions of the match using \1, \2, ..., \9. Note
that two backslashes (\\1) are required in CMake code to get a
backslash through argument parsing.
REPLACE will replace all occurrences of match_string in the
input with replace_string and store the result in the output.
COMPARE EQUAL/NOTEQUAL/LESS/GREATER will compare the strings and
store true or false in the output variable.
ASCII will convert all numbers into corresponding ASCII charac-
ters.
CONFIGURE will transform a string like CONFIGURE_FILE transforms
a file.
TOUPPER/TOLOWER will convert string to upper/lower characters.
LENGTH will return a given string's length.
SUBSTRING will return a substring of a given string. If length
is -1 the remainder of the string starting at begin will be
returned.
STRIP will return a substring of a given string with leading and
trailing spaces removed.
RANDOM will return a random string of given length consisting of
characters from the given alphabet. Default length is 5 charac-
ters and default alphabet is all numbers and upper and lower
case letters. If an integer RANDOM_SEED is given, its value
will be used to seed the random number generator.
FIND will return the position where the given substring was
found in the supplied string. If the REVERSE flag was used, the
command will search for the position of the last occurrence of
the specified substring.
The following characters have special meaning in regular expres-
sions:
^ Matches at beginning of a line
$ Matches at end of a line
. Matches any single character
[ ] Matches any character(s) inside the brackets
[^ ] Matches any character(s) not inside the brackets
- Matches any character in range on either side of a dash
* Matches preceding pattern zero or more times
+ Matches preceding pattern one or more times
? Matches preceding pattern zero or once only
| Matches a pattern on either side of the |
() Saves a matched subexpression, which can be referenced
in the REGEX REPLACE operation. Additionally it is saved
by all regular expression-related commands, including
e.g. if( MATCHES ), in the variables CMAKE_MATCH_(0..9).
unset Unset a variable, cache variable, or environment variable.
unset(<variable> [CACHE])
Removes the specified variable causing it to become undefined.
If CACHE is present then the variable is removed from the cache
instead of the current scope.
<variable> can be an environment variable such as:
unset(ENV{LD_LIBRARY_PATH})
in which case the variable will be removed from the current
environment.
use_mangled_mesa
Copy mesa headers for use in combination with system GL.
use_mangled_mesa(PATH_TO_MESA OUTPUT_DIRECTORY)
The path to mesa includes, should contain gl_mangle.h. The mesa
headers are copied to the specified output directory. This
allows mangled mesa headers to override other GL headers by
being added to the include directory path earlier.
variable_watch
Watch the CMake variable for change.
variable_watch(<variable name> [<command to execute>])
If the specified variable changes, the message will be printed
about the variable being changed. If the command is specified,
the command will be executed. The command will receive the fol-
lowing arguments: COMMAND(<variable> <access> <value> <current
list file> <stack>)
while Evaluate a group of commands while a condition is true
while(condition)
COMMAND1(ARGS ...)
COMMAND2(ARGS ...)
...
endwhile(condition)
All commands between while and the matching endwhile are
recorded without being invoked. Once the endwhile is evaluated,
the recorded list of commands is invoked as long as the condi-
tion is true. The condition is evaluated using the same logic as
the if command.
write_file
Deprecated. Use the file(WRITE ) command instead.
write_file(filename "message to write"... [APPEND])
The first argument is the file name, the rest of the arguments
are messages to write. If the argument APPEND is specified, then
the message will be appended.
NOTE 1: file(WRITE ... and file(APPEND ... do exactly the same
as this one but add some more functionality.
NOTE 2: When using write_file the produced file cannot be used
as an input to CMake (CONFIGURE_FILE, source file ...) because
it will lead to an infinite loop. Use configure_file if you want
to generate input files to CMake.
PROPERTIES
CMake Properties - Properties supported by CMake, the Cross-Platform Makefile Generator.
This is the documentation for the properties supported by CMake. Prop-
erties can have different scopes. They can either be assigned to a
source file, a directory, a target or globally to CMake. By modifying
the values of properties the behaviour of the build system can be cus-
tomized.
COMPATIBILITY COMMANDS
CMake Compatibility Listfile Commands - Obsolete commands supported by CMake for compatibility.
This is the documentation for now obsolete listfile commands from pre-
vious CMake versions, which are still supported for compatibility rea-
sons. You should instead use the newer, faster and shinier new com-
mands. ;-)
MODULES
COPYRIGHT
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium. All
rights reserved.
Redistribution and use in source and binary forms, with or without mod-
ification, are permitted provided that the following conditions are
met:
Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
Neither the names of Kitware, Inc., the Insight Software Consortium,
nor the names of their contributors may be used to endorse or promote
products derived from this software without specific prior written per-
mission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTIC-
ULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+---------------+-----------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-----------------------+
|Availability | developer/build/cmake |
+---------------+-----------------------+
|Stability | Uncommitted |
+---------------+-----------------------+
SEE ALSO
cmake(1), ccmake(1)
The following resources are available to get help using CMake:
Home Page
http://www.cmake.org
The primary starting point for learning about CMake.
Frequently Asked Questions
http://www.cmake.org/Wiki/CMake_FAQ
A Wiki is provided containing answers to frequently asked ques-
tions.
Online Documentation
http://www.cmake.org/HTML/Documentation.html
Links to available documentation may be found on this web page.
Mailing List
http://www.cmake.org/HTML/MailingLists.html
For help and discussion about using cmake, a mailing list is
provided at cmake@cmake.org. The list is member-post-only but
one may sign up on the CMake web page. Please first read the
full documentation at http://www.cmake.org before posting ques-
tions to the list.
Summary of helpful links:
Home: http://www.cmake.org
Docs: http://www.cmake.org/HTML/Documentation.html
Mail: http://www.cmake.org/HTML/MailingLists.html
FAQ: http://www.cmake.org/Wiki/CMake_FAQ
AUTHOR
This manual page was generated by the "--help-man" option.
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original community
source was downloaded from
http://www.cmake.org/files/v2.8/cmake-2.8.6.tar.gz
Further information about this software can be found on the open source
community website at http://www.cmake.org/.
ctest 2.8.6 August 19, 2015 ctest(1)