code:
<!DOCTYPE html>

    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="generator" content="Docutils 0.19: https://docutils.sourceforge.io/" />

  <title>cmake-file-api(7) — CMake 3.29.0-rc3 Documentation</title>

    <link rel="stylesheet" type="text/css" href="../_static/pygments.css" />
    <link rel="stylesheet" type="text/css" href="../_static/cmake.css" />

    <link rel="icon" href="../_static/cmake-favicon.ico"/>
    <link rel="index" title="Index" href="../genindex.html" />
    <link rel="search" title="Search" href="../search.html" />
    <link rel="next" title="cmake-generator-expressions(7)" href="cmake-generator-expressions.7.html" />
    <link rel="prev" title="CCMAKE_COLORS" href="../envvar/CCMAKE_COLORS.html" />

Navigation

          index

          next |

          previous |

    CMake »

    3.29.0-rc3 Documentation »

cmake-file-api(7)

cmake-file-api(7)¶

Contents

cmake-file-api(7)

Introduction

API v1

v1 Shared Stateless Query Files

v1 Client Stateless Query Files

v1 Client Stateful Query Files

v1 Reply Index File

v1 Reply File Reference

v1 Reply Files

Object Kinds

Object Kind "codemodel"

"codemodel" version 2

"codemodel" version 2 "directory" object

"codemodel" version 2 "target" object

"codemodel" version 2 "backtrace graph"

Object Kind "configureLog"

"configureLog" version 1

Object Kind "cache"

"cache" version 2

Object Kind "cmakeFiles"

"cmakeFiles" version 1

Object Kind "toolchains"

"toolchains" version 1

Introduction¶

CMake provides a file-based API that clients may use to get semantic
information about the buildsystems CMake generates.  Clients may use
the API by writing query files to a specific location in a build tree
to request zero or more Object Kinds.  When CMake generates the
buildsystem in that build tree it will read the query files and write
reply files for the client to read.

The file-based API uses a <build>/.cmake/api/ directory at the top
of a build tree.  The API is versioned to support changes to the layout
of files within the API directory.  API file layout versioning is
orthogonal to the versioning of Object Kinds used in replies.
This version of CMake supports only one API version, API v1.

New in version 3.27: Projects may also submit queries for the current run using the
cmake_file_api() command.

API v1¶

API v1 is housed in the <build>/.cmake/api/v1/ directory.
It has the following subdirectories:

query/

Holds query files written by clients.
These may be v1 Shared Stateless Query Files,
v1 Client Stateless Query Files, or v1 Client Stateful Query Files.

reply/

Holds reply files written by CMake whenever it runs to generate a build
system.  These are indexed by a v1 Reply Index File file that may
reference additional v1 Reply Files.  CMake owns all reply files.
Clients must never remove them.

Clients may look for and read a reply index file at any time.
Clients may optionally create the reply/ directory at any time
and monitor it for the appearance of a new reply index file.

v1 Shared Stateless Query Files¶

Shared stateless query files allow clients to share requests for
major versions of the Object Kinds and get all requested versions
recognized by the CMake that runs.

Clients may create shared requests by creating empty files in the
v1/query/ directory.  The form is:

<build>/.cmake/api/v1/query/<kind>-v<major>

where <kind> is one of the Object Kinds, -v is literal,
and <major> is the major version number.

Files of this form are stateless shared queries not owned by any specific
client.  Once created they should not be removed without external client
coordination or human intervention.

v1 Client Stateless Query Files¶

Client stateless query files allow clients to create owned requests for
major versions of the Object Kinds and get all requested versions
recognized by the CMake that runs.

Clients may create owned requests by creating empty files in
client-specific query subdirectories.  The form is:

<build>/.cmake/api/v1/query/client-<client>/<kind>-v<major>

where client- is literal, <client> is a string uniquely
identifying the client, <kind> is one of the Object Kinds,
-v is literal, and <major> is the major version number.
Each client must choose a unique <client> identifier via its
own means.

Files of this form are stateless queries owned by the client <client>.
The owning client may remove them at any time.

v1 Client Stateful Query Files¶

Stateful query files allow clients to request a list of versions of
each of the Object Kinds and get only the most recent version
recognized by the CMake that runs.

Clients may create owned stateful queries by creating query.json
files in client-specific query subdirectories.  The form is:

<build>/.cmake/api/v1/query/client-<client>/query.json

where client- is literal, <client> is a string uniquely
identifying the client, and query.json is literal.  Each client
must choose a unique <client> identifier via its own means.

query.json files are stateful queries owned by the client <client>.
The owning client may update or remove them at any time.  When a
given client installation is updated it may then update the stateful
query it writes to build trees to request newer object versions.
This can be used to avoid asking CMake to generate multiple object
versions unnecessarily.

A query.json file must contain a JSON object:

{
  "requests": [
    { "kind": "<kind>" , "version": 1 },
    { "kind": "<kind>" , "version": { "major": 1, "minor": 2 } },
    { "kind": "<kind>" , "version": [2, 1] },
    { "kind": "<kind>" , "version": [2, { "major": 1, "minor": 2 }] },
    { "kind": "<kind>" , "version": 1, "client": {} },
    { "kind": "..." }
  ],
  "client": {}
}

The members are:

requests

A JSON array containing zero or more requests.  Each request is
a JSON object with members:

kind

Specifies one of the Object Kinds to be included in the reply.

version

Indicates the version(s) of the object kind that the client
understands.  Versions have major and minor components following
semantic version conventions.  The value must be

a JSON integer specifying a (non-negative) major version number, or

a JSON object containing major and (optionally) minor
members specifying non-negative integer version components, or

a JSON array whose elements are each one of the above.

client

Optional member reserved for use by the client.  This value is
preserved in the reply written for the client in the
v1 Reply Index File but is otherwise ignored.  Clients may use
this to pass custom information with a request through to its reply.

For each requested object kind CMake will choose the first version
that it recognizes for that kind among those listed in the request.
The response will use the selected major version with the highest
minor version known to the running CMake for that major version.
Therefore clients should list all supported major versions in
preferred order along with the minimal minor version required
for each major version.

client

Optional member reserved for use by the client.  This value is
preserved in the reply written for the client in the
v1 Reply Index File but is otherwise ignored.  Clients may use
this to pass custom information with a query through to its reply.

Other query.json top-level members are reserved for future use.
If present they are ignored for forward compatibility.

v1 Reply Index File¶

CMake writes an index-*.json file to the v1/reply/ directory
whenever it runs to generate a build system.  Clients must read the
reply index file first and may read other v1 Reply Files only by
following references.  The form of the reply index file name is:

<build>/.cmake/api/v1/reply/index-<unspecified>.json

where index- is literal and <unspecified> is an unspecified
name selected by CMake.  Whenever a new index file is generated it
is given a new name and any old one is deleted.  During the short
time between these steps there may be multiple index files present;
the one with the largest name in lexicographic order is the current
index file.

The reply index file contains a JSON object:

{
  "cmake": {
    "version": {
      "major": 3, "minor": 14, "patch": 0, "suffix": "",
      "string": "3.14.0", "isDirty": false
    },
    "paths": {
      "cmake": "/prefix/bin/cmake",
      "ctest": "/prefix/bin/ctest",
      "cpack": "/prefix/bin/cpack",
      "root": "/prefix/share/cmake-3.14"
    },
    "generator": {
      "multiConfig": false,
      "name": "Unix Makefiles"
    }
  },
  "objects": [
    { "kind": "<kind>",
      "version": { "major": 1, "minor": 0 },
      "jsonFile": "<file>" },
    { "...": "..." }
  ],
  "reply": {
    "<kind>-v<major>": { "kind": "<kind>",
                         "version": { "major": 1, "minor": 0 },
                         "jsonFile": "<file>" },
    "<unknown>": { "error": "unknown query file" },
    "...": {},
    "client-<client>": {
      "<kind>-v<major>": { "kind": "<kind>",
                           "version": { "major": 1, "minor": 0 },
                           "jsonFile": "<file>" },
      "<unknown>": { "error": "unknown query file" },
      "...": {},
      "query.json": {
        "requests": [ {}, {}, {} ],
        "responses": [
          { "kind": "<kind>",
            "version": { "major": 1, "minor": 0 },
            "jsonFile": "<file>" },
          { "error": "unknown query file" },
          { "...": {} }
        ],
        "client": {}
      }
    }
  }
}

The members are:

cmake

A JSON object containing information about the instance of CMake that
generated the reply.  It contains members:

version

A JSON object specifying the version of CMake with members:

major, minor, patch

Integer values specifying the major, minor, and patch version components.

suffix

A string specifying the version suffix, if any, e.g. g0abc3.

string

A string specifying the full version in the format
<major>.<minor>.<patch>[-<suffix>].

isDirty

A boolean indicating whether the version was built from a version
controlled source tree with local modifications.

paths

A JSON object specifying paths to things that come with CMake.
It has members for cmake, ctest, and cpack
whose values are JSON strings specifying the absolute path to each tool,
represented with forward slashes.  It also has a root member for
the absolute path to the directory containing CMake resources like the
Modules/ directory (see CMAKE_ROOT).

generator

A JSON object describing the CMake generator used for the build.
It has members:

multiConfig

A boolean specifying whether the generator supports multiple output
configurations.

name

A string specifying the name of the generator.

platform

If the generator supports CMAKE_GENERATOR_PLATFORM,
this is a string specifying the generator platform name.

objects

A JSON array listing all versions of all Object Kinds generated
as part of the reply.  Each array entry is a
v1 Reply File Reference.

reply

A JSON object mirroring the content of the query/ directory
that CMake loaded to produce the reply.  The members are of the form

<kind>-v<major>

A member of this form appears for each of the
v1 Shared Stateless Query Files that CMake recognized as a
request for object kind <kind> with major version <major>.
The value is a v1 Reply File Reference to the corresponding
reply file for that object kind and version.

<unknown>

A member of this form appears for each of the
v1 Shared Stateless Query Files that CMake did not recognize.
The value is a JSON object with a single error member
containing a string with an error message indicating that the
query file is unknown.

client-<client>

A member of this form appears for each client-owned directory
holding v1 Client Stateless Query Files.
The value is a JSON object mirroring the content of the
query/client-<client>/ directory.  The members are of the form:

<kind>-v<major>

A member of this form appears for each of the
v1 Client Stateless Query Files that CMake recognized as a
request for object kind <kind> with major version <major>.
The value is a v1 Reply File Reference to the corresponding
reply file for that object kind and version.

<unknown>

A member of this form appears for each of the
v1 Client Stateless Query Files that CMake did not recognize.
The value is a JSON object with a single error member
containing a string with an error message indicating that the
query file is unknown.

query.json

This member appears for clients using
v1 Client Stateful Query Files.
If the query.json file failed to read or parse as a JSON object,
this member is a JSON object with a single error member
containing a string with an error message.  Otherwise, this member
is a JSON object mirroring the content of the query.json file.
The members are:

client

A copy of the query.json file client member, if it exists.

requests

A copy of the query.json file requests member, if it exists.

responses

If the query.json file requests member is missing or invalid,
this member is a JSON object with a single error member
containing a string with an error message.  Otherwise, this member
contains a JSON array with a response for each entry of the
requests array, in the same order.  Each response is

a JSON object with a single error member containing a string
with an error message, or

a v1 Reply File Reference to the corresponding reply file for
the requested object kind and selected version.

After reading the reply index file, clients may read the other
v1 Reply Files it references.

v1 Reply File Reference¶

The reply index file represents each reference to another reply file
using a JSON object with members:

kind

A string specifying one of the Object Kinds.

version

A JSON object with members major and minor specifying
integer version components of the object kind.

jsonFile

A JSON string specifying a path relative to the reply index file
to another JSON file containing the object.

v1 Reply Files¶

Reply files containing specific Object Kinds are written by CMake.
The names of these files are unspecified and must not be interpreted
by clients.  Clients must first read the v1 Reply Index File and
follow references to the names of the desired response objects.

Reply files (including the index file) will never be replaced by
files of the same name but different content.  This allows a client
to read the files concurrently with a running CMake that may generate
a new reply.  However, after generating a new reply CMake will attempt
to remove reply files from previous runs that it did not just write.
If a client attempts to read a reply file referenced by the index but
finds the file missing, that means a concurrent CMake has generated
a new reply.  The client may simply start again by reading the new
reply index file.

Object Kinds¶

The CMake file-based API reports semantic information about the build
system using the following kinds of JSON objects.  Each kind of object
is versioned independently using semantic versioning with major and
minor components.  Every kind of object has the form:

{
  "kind": "<kind>",
  "version": { "major": 1, "minor": 0 },
  "...": {}
}

The kind member is a string specifying the object kind name.
The version member is a JSON object with major and minor
members specifying integer components of the object kind's version.
Additional top-level members are specific to each object kind.

Object Kind "codemodel"¶

The codemodel object kind describes the build system structure as
modeled by CMake.

There is only one codemodel object major version, version 2.
Version 1 does not exist to avoid confusion with that from
cmake-server(7) mode.

"codemodel" version 2¶

codemodel object version 2 is a JSON object:

{
  "kind": "codemodel",
  "version": { "major": 2, "minor": 7 },
  "paths": {
    "source": "/path/to/top-level-source-dir",
    "build": "/path/to/top-level-build-dir"
  },
  "configurations": [
    {
      "name": "Debug",
      "directories": [
        {
          "source": ".",
          "build": ".",
          "childIndexes": [ 1 ],
          "projectIndex": 0,
          "targetIndexes": [ 0 ],
          "hasInstallRule": true,
          "minimumCMakeVersion": {
            "string": "3.14"
          },
          "jsonFile": "<file>"
        },
        {
          "source": "sub",
          "build": "sub",
          "parentIndex": 0,
          "projectIndex": 0,
          "targetIndexes": [ 1 ],
          "minimumCMakeVersion": {
            "string": "3.14"
          },
          "jsonFile": "<file>"
        }
      ],
      "projects": [
        {
          "name": "MyProject",
          "directoryIndexes": [ 0, 1 ],
          "targetIndexes": [ 0, 1 ]
        }
      ],
      "targets": [
        {
          "name": "MyExecutable",
          "directoryIndex": 0,
          "projectIndex": 0,
          "jsonFile": "<file>"
        },
        {
          "name": "MyLibrary",
          "directoryIndex": 1,
          "projectIndex": 0,
          "jsonFile": "<file>"
        }
      ]
    }
  ]
}

The members specific to codemodel objects are:

paths

A JSON object containing members:

source

A string specifying the absolute path to the top-level source directory,
represented with forward slashes.

build

A string specifying the absolute path to the top-level build directory,
represented with forward slashes.

configurations

A JSON array of entries corresponding to available build configurations.
On single-configuration generators there is one entry for the value
of the CMAKE_BUILD_TYPE variable.  For multi-configuration
generators there is an entry for each configuration listed in the
CMAKE_CONFIGURATION_TYPES variable.
Each entry is a JSON object containing members:

name

A string specifying the name of the configuration, e.g. Debug.

directories

A JSON array of entries each corresponding to a build system directory
whose source directory contains a CMakeLists.txt file.  The first
entry corresponds to the top-level directory.  Each entry is a
JSON object containing members:

source

A string specifying the path to the source directory, represented
with forward slashes.  If the directory is inside the top-level
source directory then the path is specified relative to that
directory (with . for the top-level source directory itself).
Otherwise the path is absolute.

build

A string specifying the path to the build directory, represented
with forward slashes.  If the directory is inside the top-level
build directory then the path is specified relative to that
directory (with . for the top-level build directory itself).
Otherwise the path is absolute.

parentIndex

Optional member that is present when the directory is not top-level.
The value is an unsigned integer 0-based index of another entry in
the main directories array that corresponds to the parent
directory that added this directory as a subdirectory.

childIndexes

Optional member that is present when the directory has subdirectories.
The value is a JSON array of entries corresponding to child directories
created by the add_subdirectory() or subdirs()
command.  Each entry is an unsigned integer 0-based index of another
entry in the main directories array.

projectIndex

An unsigned integer 0-based index into the main projects array
indicating the build system project to which the this directory belongs.

targetIndexes

Optional member that is present when the directory itself has targets,
excluding those belonging to subdirectories.  The value is a JSON
array of entries corresponding to the targets.  Each entry is an
unsigned integer 0-based index into the main targets array.

minimumCMakeVersion

Optional member present when a minimum required version of CMake is
known for the directory.  This is the <min> version given to the
most local call to the cmake_minimum_required(VERSION)
command in the directory itself or one of its ancestors.
The value is a JSON object with one member:

string

A string specifying the minimum required version in the format:

<major>.<minor>[.<patch>[.<tweak>]][<suffix>]

Each component is an unsigned integer and the suffix may be an
arbitrary string.

hasInstallRule

Optional member that is present with boolean value true when
the directory or one of its subdirectories contains any
install() rules, i.e. whether a make install
or equivalent rule is available.

jsonFile

A JSON string specifying a path relative to the codemodel file
to another JSON file containing a
"codemodel" version 2 "directory" object.

This field was added in codemodel version 2.3.

projects

A JSON array of entries corresponding to the top-level project
and sub-projects defined in the build system.  Each (sub-)project
corresponds to a source directory whose CMakeLists.txt file
calls the project() command with a project name different
from its parent directory.  The first entry corresponds to the
top-level project.

Each entry is a JSON object containing members:

name

A string specifying the name given to the project() command.

parentIndex

Optional member that is present when the project is not top-level.
The value is an unsigned integer 0-based index of another entry in
the main projects array that corresponds to the parent project
that added this project as a sub-project.

childIndexes

Optional member that is present when the project has sub-projects.
The value is a JSON array of entries corresponding to the sub-projects.
Each entry is an unsigned integer 0-based index of another
entry in the main projects array.

directoryIndexes

A JSON array of entries corresponding to build system directories
that are part of the project.  The first entry corresponds to the
top-level directory of the project.  Each entry is an unsigned
integer 0-based index into the main directories array.

targetIndexes

Optional member that is present when the project itself has targets,
excluding those belonging to sub-projects.  The value is a JSON
array of entries corresponding to the targets.  Each entry is an
unsigned integer 0-based index into the main targets array.

targets

A JSON array of entries corresponding to the build system targets.
Such targets are created by calls to add_executable(),
add_library(), and add_custom_target(), excluding
imported targets and interface libraries (which do not generate any
build rules).  Each entry is a JSON object containing members:

name

A string specifying the target name.

id

A string uniquely identifying the target.  This matches the id
field in the file referenced by jsonFile.

directoryIndex

An unsigned integer 0-based index into the main directories array
indicating the build system directory in which the target is defined.

projectIndex

An unsigned integer 0-based index into the main projects array
indicating the build system project in which the target is defined.

jsonFile

A JSON string specifying a path relative to the codemodel file
to another JSON file containing a
"codemodel" version 2 "target" object.

"codemodel" version 2 "directory" object¶

A codemodel "directory" object is referenced by a "codemodel" version 2
object's directories array.  Each "directory" object is a JSON object
with members:

paths

A JSON object containing members:

source

A string specifying the path to the source directory, represented
with forward slashes.  If the directory is inside the top-level
source directory then the path is specified relative to that
directory (with . for the top-level source directory itself).
Otherwise the path is absolute.

build

A string specifying the path to the build directory, represented
with forward slashes.  If the directory is inside the top-level
build directory then the path is specified relative to that
directory (with . for the top-level build directory itself).
Otherwise the path is absolute.

installers

A JSON array of entries corresponding to install() rules.
Each entry is a JSON object containing members:

component

A string specifying the component selected by the corresponding
install() command invocation.

destination

Optional member that is present for specific type values below.
The value is a string specifying the install destination path.
The path may be absolute or relative to the install prefix.

paths

Optional member that is present for specific type values below.
The value is a JSON array of entries corresponding to the paths
(files or directories) to be installed.  Each entry is one of:

A string specifying the path from which a file or directory
is to be installed.  The portion of the path not preceded by
a / also specifies the path (name) to which the file
or directory is to be installed under the destination.

A JSON object with members:

from

A string specifying the path from which a file or directory
is to be installed.

to

A string specifying the path to which the file or directory
is to be installed under the destination.

In both cases the paths are represented with forward slashes.  If
the "from" path is inside the top-level directory documented by the
corresponding type value, then the path is specified relative
to that directory.  Otherwise the path is absolute.

type

A string specifying the type of installation rule.  The value is one
of the following, with some variants providing additional members:

file

An install(FILES) or install(PROGRAMS) call.
The destination and paths members are populated, with paths
under the top-level source directory expressed relative to it.
The isOptional member may exist.
This type has no additional members.

directory

An install(DIRECTORY) call.
The destination and paths members are populated, with paths
under the top-level source directory expressed relative to it.
The isOptional member may exist.
This type has no additional members.

target

An install(TARGETS) call.
The destination and paths members are populated, with paths
under the top-level build directory expressed relative to it.
The isOptional member may exist.
This type has additional members targetId, targetIndex,
targetIsImportLibrary, and targetInstallNamelink.

export

An install(EXPORT) call.
The destination and paths members are populated, with paths
under the top-level build directory expressed relative to it.
The paths entries refer to files generated automatically by
CMake for installation, and their actual values are considered
private implementation details.
This type has additional members exportName and exportTargets.

script

An install(SCRIPT) call.
This type has additional member scriptFile.

code

An install(CODE) call.
This type has no additional members.

importedRuntimeArtifacts

An install(IMPORTED_RUNTIME_ARTIFACTS) call.
The destination member is populated. The isOptional member may
exist. This type has no additional members.

runtimeDependencySet

An install(RUNTIME_DEPENDENCY_SET) call or an
install(TARGETS) call with RUNTIME_DEPENDENCIES. The
destination member is populated. This type has additional members
runtimeDependencySetName and runtimeDependencySetType.

fileSet

An install(TARGETS) call with FILE_SET.
The destination and paths members are populated.
The isOptional member may exist.
This type has additional members fileSetName, fileSetType,
fileSetDirectories, and fileSetTarget.

This type was added in codemodel version 2.4.

isExcludeFromAll

Optional member that is present with boolean value true when
install() is called with the EXCLUDE_FROM_ALL option.

isForAllComponents

Optional member that is present with boolean value true when
install(SCRIPT|CODE) is called with the
ALL_COMPONENTS option.

isOptional

Optional member that is present with boolean value true when
install() is called with the OPTIONAL option.
This is allowed when type is file, directory, or target.

targetId

Optional member that is present when type is target.
The value is a string uniquely identifying the target to be installed.
This matches the id member of the target in the main
"codemodel" object's targets array.

targetIndex

Optional member that is present when type is target.
The value is an unsigned integer 0-based index into the main "codemodel"
object's targets array for the target to be installed.

targetIsImportLibrary

Optional member that is present when type is target and
the installer is for a Windows DLL import library file or for an
AIX linker import file.  If present, it has boolean value true.

targetInstallNamelink

Optional member that is present when type is target and
the installer corresponds to a target that may use symbolic links
to implement the VERSION and SOVERSION
target properties.
The value is a string indicating how the installer is supposed to
handle the symlinks: skip means the installer should skip the
symlinks and install only the real file, and only means the
installer should install only the symlinks and not the real file.
In all cases the paths member lists what it actually installs.

exportName

Optional member that is present when type is export.
The value is a string specifying the name of the export.

exportTargets

Optional member that is present when type is export.
The value is a JSON array of entries corresponding to the targets
included in the export.  Each entry is a JSON object with members:

id

A string uniquely identifying the target.  This matches
the id member of the target in the main "codemodel"
object's targets array.

index

An unsigned integer 0-based index into the main "codemodel"
object's targets array for the target.

runtimeDependencySetName

Optional member that is present when type is runtimeDependencySet
and the installer was created by an
install(RUNTIME_DEPENDENCY_SET) call. The value is a string
specifying the name of the runtime dependency set that was installed.

runtimeDependencySetType

Optional member that is present when type is runtimeDependencySet.
The value is a string with one of the following values:

library

Indicates that this installer installs dependencies that are not macOS
frameworks.

framework

Indicates that this installer installs dependencies that are macOS
frameworks.

fileSetName

Optional member that is present when type is fileSet. The value is
a string with the name of the file set.

This field was added in codemodel version 2.4.

fileSetType

Optional member that is present when type is fileSet. The value is
a string with the type of the file set.

This field was added in codemodel version 2.4.

fileSetDirectories

Optional member that is present when type is fileSet. The value
is a list of strings with the file set's base directories (determined by
genex-evaluation of HEADER_DIRS or
HEADER_DIRS_<NAME>).

This field was added in codemodel version 2.4.

fileSetTarget

Optional member that is present when type is fileSet. The value
is a JSON object with members:

id

A string uniquely identifying the target.  This matches
the id member of the target in the main "codemodel"
object's targets array.

index

An unsigned integer 0-based index into the main "codemodel"
object's targets array for the target.

This field was added in codemodel version 2.4.

scriptFile

Optional member that is present when type is script.
The value is a string specifying the path to the script file on disk,
represented with forward slashes.  If the file is inside the top-level
source directory then the path is specified relative to that directory.
Otherwise the path is absolute.

backtrace

Optional member that is present when a CMake language backtrace to
the install() or other command invocation that added this
installer is available.  The value is an unsigned integer 0-based
index into the backtraceGraph member's nodes array.

backtraceGraph

A "codemodel" version 2 "backtrace graph" whose nodes are referenced
from backtrace members elsewhere in this "directory" object.

"codemodel" version 2 "target" object¶

A codemodel "target" object is referenced by a "codemodel" version 2
object's targets array.  Each "target" object is a JSON object
with members:

name

A string specifying the logical name of the target.

id

A string uniquely identifying the target.  The format is unspecified
and should not be interpreted by clients.

type

A string specifying the type of the target.  The value is one of
EXECUTABLE, STATIC_LIBRARY, SHARED_LIBRARY,
MODULE_LIBRARY, OBJECT_LIBRARY, INTERFACE_LIBRARY,
or UTILITY.

backtrace

Optional member that is present when a CMake language backtrace to
the command in the source code that created the target is available.
The value is an unsigned integer 0-based index into the
backtraceGraph member's nodes array.

folder

Optional member that is present when the FOLDER target
property is set.  The value is a JSON object with one member:

name

A string specifying the name of the target folder.

paths

A JSON object containing members:

source

A string specifying the path to the target's source directory,
represented with forward slashes.  If the directory is inside the
top-level source directory then the path is specified relative to
that directory (with . for the top-level source directory itself).
Otherwise the path is absolute.

build

A string specifying the path to the target's build directory,
represented with forward slashes.  If the directory is inside the
top-level build directory then the path is specified relative to
that directory (with . for the top-level build directory itself).
Otherwise the path is absolute.

nameOnDisk

Optional member that is present for executable and library targets
that are linked or archived into a single primary artifact.
The value is a string specifying the file name of that artifact on disk.

artifacts

Optional member that is present for executable and library targets
that produce artifacts on disk meant for consumption by dependents.
The value is a JSON array of entries corresponding to the artifacts.
Each entry is a JSON object containing one member:

path

A string specifying the path to the file on disk, represented with
forward slashes.  If the file is inside the top-level build directory
then the path is specified relative to that directory.
Otherwise the path is absolute.

isGeneratorProvided

Optional member that is present with boolean value true if the
target is provided by CMake's build system generator rather than by
a command in the source code.

install

Optional member that is present when the target has an install()
rule.  The value is a JSON object with members:

prefix

A JSON object specifying the installation prefix.  It has one member:

path

A string specifying the value of CMAKE_INSTALL_PREFIX.

destinations

A JSON array of entries specifying an install destination path.
Each entry is a JSON object with members:

path

A string specifying the install destination path.  The path may
be absolute or relative to the install prefix.

backtrace

Optional member that is present when a CMake language backtrace to
the install() command invocation that specified this
destination is available.  The value is an unsigned integer 0-based
index into the backtraceGraph member's nodes array.

launchers

Optional member that is present on executable targets that have
at least one launcher specified by the project.  The value is a
JSON array of entries corresponding to the specified launchers.
Each entry is a JSON object with members:

command

A string specifying the path to the launcher on disk, represented
with forward slashes. If the file is inside the top-level source
directory then the path is specified relative to that directory.

arguments

Optional member that is present when the launcher command has
arguments preceding the executable to be launched.  The value
is a JSON array of strings representing the arguments.

type

A string specifying the type of launcher.  The value is one of
the following:

emulator

An emulator for the target platform when cross-compiling.
See the CROSSCOMPILING_EMULATOR target property.

test

A start program for the execution of tests.
See the TEST_LAUNCHER target property.

This field was added in codemodel version 2.7.

link

Optional member that is present for executables and shared library
targets that link into a runtime binary.  The value is a JSON object
with members describing the link step:

language

A string specifying the language (e.g. C, CXX, Fortran)
of the toolchain is used to invoke the linker.

commandFragments

Optional member that is present when fragments of the link command
line invocation are available.  The value is a JSON array of entries
specifying ordered fragments.  Each entry is a JSON object with members:

fragment

A string specifying a fragment of the link command line invocation.
The value is encoded in the build system's native shell format.

role

A string specifying the role of the fragment's content:

flags: link flags.

libraries: link library file paths or flags.

libraryPath: library search path flags.

frameworkPath: macOS framework search path flags.

lto

Optional member that is present with boolean value true
when link-time optimization (a.k.a. interprocedural optimization
or link-time code generation) is enabled.

sysroot

Optional member that is present when the CMAKE_SYSROOT_LINK
or CMAKE_SYSROOT variable is defined.  The value is a
JSON object with one member:

path

A string specifying the absolute path to the sysroot, represented
with forward slashes.

archive

Optional member that is present for static library targets.  The value
is a JSON object with members describing the archive step:

commandFragments

Optional member that is present when fragments of the archiver command
line invocation are available.  The value is a JSON array of entries
specifying the fragments.  Each entry is a JSON object with members:

fragment

A string specifying a fragment of the archiver command line invocation.
The value is encoded in the build system's native shell format.

role

A string specifying the role of the fragment's content:

flags: archiver flags.

lto

Optional member that is present with boolean value true
when link-time optimization (a.k.a. interprocedural optimization
or link-time code generation) is enabled.

dependencies

Optional member that is present when the target depends on other targets.
The value is a JSON array of entries corresponding to the dependencies.
Each entry is a JSON object with members:

id

A string uniquely identifying the target on which this target depends.
This matches the main id member of the other target.

backtrace

Optional member that is present when a CMake language backtrace to
the add_dependencies(), target_link_libraries(),
or other command invocation that created this dependency is
available.  The value is an unsigned integer 0-based index into
the backtraceGraph member's nodes array.

fileSets

A JSON array of entries corresponding to the target's file sets. Each entry
is a JSON object with members:

name

A string specifying the name of the file set.

type

A string specifying the type of the file set.  See
target_sources() supported file set types.

visibility

A string specifying the visibility of the file set; one of PUBLIC,
PRIVATE, or INTERFACE.

baseDirectories

A JSON array of strings, each specifying a base directory containing
sources in the file set.  If the directory is inside the top-level source
directory then the path is specified relative to that directory.
Otherwise the path is absolute.

This field was added in codemodel version 2.5.

sources

A JSON array of entries corresponding to the target's source files.
Each entry is a JSON object with members:

path

A string specifying the path to the source file on disk, represented
with forward slashes.  If the file is inside the top-level source
directory then the path is specified relative to that directory.
Otherwise the path is absolute.

compileGroupIndex

Optional member that is present when the source is compiled.
The value is an unsigned integer 0-based index into the
compileGroups array.

sourceGroupIndex

Optional member that is present when the source is part of a source
group either via the source_group() command or by default.
The value is an unsigned integer 0-based index into the
sourceGroups array.

isGenerated

Optional member that is present with boolean value true if
the source is GENERATED.

fileSetIndex

Optional member that is present when the source is part of a file set.
The value is an unsigned integer 0-based index into the fileSets
array.

This field was added in codemodel version 2.5.

backtrace

Optional member that is present when a CMake language backtrace to
the target_sources(), add_executable(),
add_library(), add_custom_target(), or other
command invocation that added this source to the target is
available.  The value is an unsigned integer 0-based index into
the backtraceGraph member's nodes array.

sourceGroups

Optional member that is present when sources are grouped together by
the source_group() command or by default.  The value is a
JSON array of entries corresponding to the groups.  Each entry is
a JSON object with members:

name

A string specifying the name of the source group.

sourceIndexes

A JSON array listing the sources belonging to the group.
Each entry is an unsigned integer 0-based index into the
main sources array for the target.

compileGroups

Optional member that is present when the target has sources that compile.
The value is a JSON array of entries corresponding to groups of sources
that all compile with the same settings.  Each entry is a JSON object
with members:

sourceIndexes

A JSON array listing the sources belonging to the group.
Each entry is an unsigned integer 0-based index into the
main sources array for the target.

language

A string specifying the language (e.g. C, CXX, Fortran)
of the toolchain is used to compile the source file.

languageStandard

Optional member that is present when the language standard is set
explicitly (e.g. via CXX_STANDARD) or implicitly by
compile features.  Each entry is a JSON object with two members:

backtraces

Optional member that is present when a CMake language backtrace to
the <LANG>_STANDARD setting is available.  If the language
standard was set implicitly by compile features those are used as
the backtrace(s).  It's possible for multiple compile features to
require the same language standard so there could be multiple
backtraces. The value is a JSON array with each entry being an
unsigned integer 0-based index into the backtraceGraph
member's nodes array.

standard

String representing the language standard.

This field was added in codemodel version 2.2.

compileCommandFragments

Optional member that is present when fragments of the compiler command
line invocation are available.  The value is a JSON array of entries
specifying ordered fragments.  Each entry is a JSON object with
one member:

fragment

A string specifying a fragment of the compile command line invocation.
The value is encoded in the build system's native shell format.

includes

Optional member that is present when there are include directories.
The value is a JSON array with an entry for each directory.  Each
entry is a JSON object with members:

path

A string specifying the path to the include directory,
represented with forward slashes.

isSystem

Optional member that is present with boolean value true if
the include directory is marked as a system include directory.

backtrace

Optional member that is present when a CMake language backtrace to
the target_include_directories() or other command invocation
that added this include directory is available.  The value is
an unsigned integer 0-based index into the backtraceGraph
member's nodes array.

frameworks

Optional member that is present when, on Apple platforms, there are
frameworks. The value is a JSON array with an entry for each directory.
Each entry is a JSON object with members:

path

A string specifying the path to the framework directory,
represented with forward slashes.

isSystem

Optional member that is present with boolean value true if
the framework is marked as a system one.

backtrace

Optional member that is present when a CMake language backtrace to
the target_link_libraries() or other command invocation
that added this framework is available.  The value is
an unsigned integer 0-based index into the backtraceGraph
member's nodes array.

This field was added in codemodel version 2.6.

precompileHeaders

Optional member that is present when target_precompile_headers()
or other command invocations set PRECOMPILE_HEADERS on the
target.  The value is a JSON array with an entry for each header.  Each
entry is a JSON object with members:

header

Full path to the precompile header file.

backtrace

Optional member that is present when a CMake language backtrace to
the target_precompile_headers() or other command invocation
that added this precompiled header is available.  The value is an
unsigned integer 0-based index into the backtraceGraph member's
nodes array.

This field was added in codemodel version 2.1.

defines

Optional member that is present when there are preprocessor definitions.
The value is a JSON array with an entry for each definition.  Each
entry is a JSON object with members:

define

A string specifying the preprocessor definition in the format
<name>[=<value>], e.g. DEF or DEF=1.

backtrace

Optional member that is present when a CMake language backtrace to
the target_compile_definitions() or other command invocation
that added this preprocessor definition is available.  The value is
an unsigned integer 0-based index into the backtraceGraph
member's nodes array.

sysroot

Optional member that is present when the
CMAKE_SYSROOT_COMPILE or CMAKE_SYSROOT
variable is defined.  The value is a JSON object with one member:

path

A string specifying the absolute path to the sysroot, represented
with forward slashes.

backtraceGraph

A "codemodel" version 2 "backtrace graph" whose nodes are referenced
from backtrace members elsewhere in this "target" object.

"codemodel" version 2 "backtrace graph"¶

The backtraceGraph member of a "codemodel" version 2 "directory" object,
or "codemodel" version 2 "target" object is a JSON object describing a
graph of backtraces.  Its nodes are referenced from backtrace members
elsewhere in the containing object.  The backtrace graph object members are:

nodes

A JSON array listing nodes in the backtrace graph.  Each entry
is a JSON object with members:

file

An unsigned integer 0-based index into the backtrace files array.

line

An optional member present when the node represents a line within
the file.  The value is an unsigned integer 1-based line number.

command

An optional member present when the node represents a command
invocation within the file.  The value is an unsigned integer
0-based index into the backtrace commands array.

parent

An optional member present when the node is not the bottom of
the call stack.  The value is an unsigned integer 0-based index
of another entry in the backtrace nodes array.

commands

A JSON array listing command names referenced by backtrace nodes.
Each entry is a string specifying a command name.

files

A JSON array listing CMake language files referenced by backtrace nodes.
Each entry is a string specifying the path to a file, represented
with forward slashes.  If the file is inside the top-level source
directory then the path is specified relative to that directory.
Otherwise the path is absolute.

Object Kind "configureLog"¶

The configureLog object kind describes the location and contents of
a cmake-configure-log(7) file.

There is only one configureLog object major version, version 1.

"configureLog" version 1¶

configureLog object version 1 is a JSON object:

{
  "kind": "configureLog",
  "version": { "major": 1, "minor": 0 },
  "path": "/path/to/top-level-build-dir/CMakeFiles/CMakeConfigureLog.yaml",
  "eventKindNames": [ "try_compile-v1", "try_run-v1" ]
}

The members specific to configureLog objects are:

path

A string specifying the path to the configure log file.
Clients must read the log file from this path, which may be
different than the path documented by cmake-configure-log(7).
The log file may not exist if no events are logged.

eventKindNames

A JSON array whose entries are each a JSON string naming one
of the cmake-configure-log(7) versioned event kinds.
At most one version of each configure log event kind will be listed.
Although the configure log may contain other (versioned) event kinds,
clients must ignore those that are not listed in this field.

Object Kind "cache"¶

The cache object kind lists cache entries.  These are the
Variables stored in the persistent cache
(CMakeCache.txt) for the build tree.

There is only one cache object major version, version 2.
Version 1 does not exist to avoid confusion with that from
cmake-server(7) mode.

"cache" version 2¶

cache object version 2 is a JSON object:

{
  "kind": "cache",
  "version": { "major": 2, "minor": 0 },
  "entries": [
    {
      "name": "BUILD_SHARED_LIBS",
      "value": "ON",
      "type": "BOOL",
      "properties": [
        {
          "name": "HELPSTRING",
          "value": "Build shared libraries"
        }
      ]
    },
    {
      "name": "CMAKE_GENERATOR",
      "value": "Unix Makefiles",
      "type": "INTERNAL",
      "properties": [
        {
          "name": "HELPSTRING",
          "value": "Name of generator."
        }
      ]
    }
  ]
}

The members specific to cache objects are:

entries

A JSON array whose entries are each a JSON object specifying a
cache entry.  The members of each entry are:

name

A string specifying the name of the entry.

value

A string specifying the value of the entry.

type

A string specifying the type of the entry used by
cmake-gui(1) to choose a widget for editing.

properties

A JSON array of entries specifying associated
cache entry properties.
Each entry is a JSON object containing members:

name

A string specifying the name of the cache entry property.

value

A string specifying the value of the cache entry property.

Object Kind "cmakeFiles"¶

The cmakeFiles object kind lists files used by CMake while
configuring and generating the build system.  These include the
CMakeLists.txt files as well as included .cmake files.

There is only one cmakeFiles object major version, version 1.

"cmakeFiles" version 1¶

cmakeFiles object version 1 is a JSON object:

{
  "kind": "cmakeFiles",
  "version": { "major": 1, "minor": 0 },
  "paths": {
    "build": "/path/to/top-level-build-dir",
    "source": "/path/to/top-level-source-dir"
  },
  "inputs": [
    {
      "path": "CMakeLists.txt"
    },
    {
      "isGenerated": true,
      "path": "/path/to/top-level-build-dir/.../CMakeSystem.cmake"
    },
    {
      "isExternal": true,
      "path": "/path/to/external/third-party/module.cmake"
    },
    {
      "isCMake": true,
      "isExternal": true,
      "path": "/path/to/cmake/Modules/CMakeGenericSystem.cmake"
    }
  ]
}

The members specific to cmakeFiles objects are:

paths

A JSON object containing members:

source

A string specifying the absolute path to the top-level source directory,
represented with forward slashes.

build

A string specifying the absolute path to the top-level build directory,
represented with forward slashes.

inputs

A JSON array whose entries are each a JSON object specifying an input
file used by CMake when configuring and generating the build system.
The members of each entry are:

path

A string specifying the path to an input file to CMake, represented
with forward slashes.  If the file is inside the top-level source
directory then the path is specified relative to that directory.
Otherwise the path is absolute.

isGenerated

Optional member that is present with boolean value true
if the path specifies a file that is under the top-level
build directory and the build is out-of-source.
This member is not available on in-source builds.

isExternal

Optional member that is present with boolean value true
if the path specifies a file that is not under the top-level
source or build directories.

isCMake

Optional member that is present with boolean value true
if the path specifies a file in the CMake installation.

Object Kind "toolchains"¶

The toolchains object kind lists properties of the toolchains used during
the build.  These include the language, compiler path, ID, and version.

There is only one toolchains object major version, version 1.

"toolchains" version 1¶

toolchains object version 1 is a JSON object:

{
  "kind": "toolchains",
  "version": { "major": 1, "minor": 0 },
  "toolchains": [
    {
      "language": "C",
      "compiler": {
        "path": "/usr/bin/cc",
        "id": "GNU",
        "version": "9.3.0",
        "implicit": {
          "includeDirectories": [
            "/usr/lib/gcc/x86_64-linux-gnu/9/include",
            "/usr/local/include",
            "/usr/include/x86_64-linux-gnu",
            "/usr/include"
          ],
          "linkDirectories": [
            "/usr/lib/gcc/x86_64-linux-gnu/9",
            "/usr/lib/x86_64-linux-gnu",
            "/usr/lib",
            "/lib/x86_64-linux-gnu",
            "/lib"
          ],
          "linkFrameworkDirectories": [],
          "linkLibraries": [ "gcc", "gcc_s", "c", "gcc", "gcc_s" ]
        }
      },
      "sourceFileExtensions": [ "c", "m" ]
    },
    {
      "language": "CXX",
      "compiler": {
        "path": "/usr/bin/c++",
        "id": "GNU",
        "version": "9.3.0",
        "implicit": {
          "includeDirectories": [
            "/usr/include/c++/9",
            "/usr/include/x86_64-linux-gnu/c++/9",
            "/usr/include/c++/9/backward",
            "/usr/lib/gcc/x86_64-linux-gnu/9/include",
            "/usr/local/include",
            "/usr/include/x86_64-linux-gnu",
            "/usr/include"
          ],
          "linkDirectories": [
            "/usr/lib/gcc/x86_64-linux-gnu/9",
            "/usr/lib/x86_64-linux-gnu",
            "/usr/lib",
            "/lib/x86_64-linux-gnu",
            "/lib"
          ],
          "linkFrameworkDirectories": [],
          "linkLibraries": [
            "stdc++", "m", "gcc_s", "gcc", "c", "gcc_s", "gcc"
          ]
        }
      },
      "sourceFileExtensions": [
        "C", "M", "c++", "cc", "cpp", "cxx", "mm", "CPP"
      ]
    }
  ]
}

The members specific to toolchains objects are:

toolchains

A JSON array whose entries are each a JSON object specifying a toolchain
associated with a particular language. The members of each entry are:

language

A JSON string specifying the toolchain language, like C or CXX. Language
names are the same as language names that can be passed to the
project() command. Because CMake only supports a single toolchain
per language, this field can be used as a key.

compiler

A JSON object containing members:

path

Optional member that is present when the
CMAKE_<LANG>_COMPILER variable is defined for the current
language. Its value is a JSON string holding the path to the compiler.

id

Optional member that is present when the
CMAKE_<LANG>_COMPILER_ID variable is defined for the current
language. Its value is a JSON string holding the ID (GNU, MSVC, etc.) of
the compiler.

version

Optional member that is present when the
CMAKE_<LANG>_COMPILER_VERSION variable is defined for the
current language. Its value is a JSON string holding the version of the
compiler.

target

Optional member that is present when the
CMAKE_<LANG>_COMPILER_TARGET variable is defined for the
current language. Its value is a JSON string holding the cross-compiling
target of the compiler.

implicit

A JSON object containing members:

includeDirectories

Optional member that is present when the
CMAKE_<LANG>_IMPLICIT_INCLUDE_DIRECTORIES variable is
defined for the current language. Its value is a JSON array of JSON
strings where each string holds a path to an implicit include
directory for the compiler.

linkDirectories

Optional member that is present when the
CMAKE_<LANG>_IMPLICIT_LINK_DIRECTORIES variable is
defined for the current language. Its value is a JSON array of JSON
strings where each string holds a path to an implicit link directory
for the compiler.

linkFrameworkDirectories

Optional member that is present when the
CMAKE_<LANG>_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES variable
is defined for the current language. Its value is a JSON array of JSON
strings where each string holds a path to an implicit link framework
directory for the compiler.

linkLibraries

Optional member that is present when the
CMAKE_<LANG>_IMPLICIT_LINK_LIBRARIES variable is defined
for the current language. Its value is a JSON array of JSON strings
where each string holds a path to an implicit link library for the
compiler.

sourceFileExtensions

Optional member that is present when the
CMAKE_<LANG>_SOURCE_FILE_EXTENSIONS variable is defined for
the current language. Its value is a JSON array of JSON strings where each
each string holds a file extension (without the leading dot) for the
language.

Table of Contents

cmake-file-api(7)

Introduction

API v1

v1 Shared Stateless Query Files

v1 Client Stateless Query Files

v1 Client Stateful Query Files

v1 Reply Index File

v1 Reply File Reference

v1 Reply Files

Object Kinds

Object Kind "codemodel"

"codemodel" version 2

"codemodel" version 2 "directory" object

"codemodel" version 2 "target" object

"codemodel" version 2 "backtrace graph"

Object Kind "configureLog"

"configureLog" version 1

Object Kind "cache"

"cache" version 2

Object Kind "cmakeFiles"

"cmakeFiles" version 1

Object Kind "toolchains"

"toolchains" version 1

Previous topic

CCMAKE_COLORS

Next topic

cmake-generator-expressions(7)

This Page

Show Source

Quick search

    <form class="search" action="../search.html" method="get">
      <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/>
      <input type="submit" value="Go" />
    </form>

Navigation

          index

          next |

          previous |

    CMake »

    3.29.0-rc3 Documentation »

cmake-file-api(7)

        © Copyright 2000-2024 Kitware, Inc. and Contributors.
      Created using Sphinx 6.2.1.