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-.. cmake-manual-description: CMake Policies Reference
-
-cmake-policies(7)
-*****************
-
-.. only:: html
-
- .. contents::
-
-Introduction
-============
-
-Policies in CMake are used to preserve backward compatible behavior
-across multiple releases. When a new policy is introduced, newer CMake
-versions will begin to warn about the backward compatible behavior. It
-is possible to disable the warning by explicitly requesting the OLD, or
-backward compatible behavior using the :command:`cmake_policy` command.
-It is also possible to request ``NEW``, or non-backward compatible behavior
-for a policy, also avoiding the warning. Each policy can also be set to
-either ``NEW`` or ``OLD`` behavior explicitly on the command line with the
-:variable:`CMAKE_POLICY_DEFAULT_CMP<NNNN>` variable.
-
-A policy is a deprecation mechanism and not a reliable feature toggle.
-A policy should almost never be set to ``OLD``, except to silence warnings
-in an otherwise frozen or stable codebase, or temporarily as part of a
-larger migration path. The ``OLD`` behavior of each policy is undesirable
-and will be replaced with an error condition in a future release.
-
-The :command:`cmake_minimum_required` command does more than report an
-error if a too-old version of CMake is used to build a project. It
-also sets all policies introduced in that CMake version or earlier to
-``NEW`` behavior. To manage policies without increasing the minimum required
-CMake version, the :command:`if(POLICY)` command may be used:
-
-.. code-block:: cmake
-
- if(POLICY CMP0990)
- cmake_policy(SET CMP0990 NEW)
- endif()
-
-This has the effect of using the ``NEW`` behavior with newer CMake releases which
-users may be using and not issuing a compatibility warning.
-
-The setting of a policy is confined in some cases to not propagate to the
-parent scope. For example, if the files read by the :command:`include` command
-or the :command:`find_package` command contain a use of :command:`cmake_policy`,
-that policy setting will not affect the caller by default. Both commands accept
-an optional ``NO_POLICY_SCOPE`` keyword to control this behavior.
-
-The :variable:`CMAKE_MINIMUM_REQUIRED_VERSION` variable may also be used
-to determine whether to report an error on use of deprecated macros or
-functions.
-
-Policies Introduced by CMake 3.10
-=================================
-
-.. toctree::
- :maxdepth: 1
-
- CMP0071: Let AUTOMOC and AUTOUIC process GENERATED files. </policy/CMP0071>
- CMP0070: Define file(GENERATE) behavior for relative paths. </policy/CMP0070>
-
-Policies Introduced by CMake 3.9
-================================
-
-.. toctree::
- :maxdepth: 1
-
- CMP0069: INTERPROCEDURAL_OPTIMIZATION is enforced when enabled. </policy/CMP0069>
- CMP0068: RPATH settings on macOS do not affect install_name. </policy/CMP0068>
-
-Policies Introduced by CMake 3.8
-================================
-
-.. toctree::
- :maxdepth: 1
-
- CMP0067: Honor language standard in try_compile() source-file signature. </policy/CMP0067>
-
-Policies Introduced by CMake 3.7
-================================
-
-.. toctree::
- :maxdepth: 1
-
- CMP0066: Honor per-config flags in try_compile() source-file signature. </policy/CMP0066>
-
-Policies Introduced by CMake 3.4
-================================
-
-.. toctree::
- :maxdepth: 1
-
- CMP0065: Do not add flags to export symbols from executables without the ENABLE_EXPORTS target property. </policy/CMP0065>
- CMP0064: Support new TEST if() operator. </policy/CMP0064>
-
-Policies Introduced by CMake 3.3
-================================
-
-.. toctree::
- :maxdepth: 1
-
- CMP0063: Honor visibility properties for all target types. </policy/CMP0063>
- CMP0062: Disallow install() of export() result. </policy/CMP0062>
- CMP0061: CTest does not by default tell make to ignore errors (-i). </policy/CMP0061>
- CMP0060: Link libraries by full path even in implicit directories. </policy/CMP0060>
- CMP0059: Do not treat DEFINITIONS as a built-in directory property. </policy/CMP0059>
- CMP0058: Ninja requires custom command byproducts to be explicit. </policy/CMP0058>
- CMP0057: Support new IN_LIST if() operator. </policy/CMP0057>
-
-Policies Introduced by CMake 3.2
-================================
-
-.. toctree::
- :maxdepth: 1
-
- CMP0056: Honor link flags in try_compile() source-file signature. </policy/CMP0056>
- CMP0055: Strict checking for break() command. </policy/CMP0055>
-
-Policies Introduced by CMake 3.1
-================================
-
-.. toctree::
- :maxdepth: 1
-
- CMP0054: Only interpret if() arguments as variables or keywords when unquoted. </policy/CMP0054>
- CMP0053: Simplify variable reference and escape sequence evaluation. </policy/CMP0053>
- CMP0052: Reject source and build dirs in installed INTERFACE_INCLUDE_DIRECTORIES. </policy/CMP0052>
- CMP0051: List TARGET_OBJECTS in SOURCES target property. </policy/CMP0051>
-
-Policies Introduced by CMake 3.0
-================================
-
-.. toctree::
- :maxdepth: 1
-
- CMP0050: Disallow add_custom_command SOURCE signatures. </policy/CMP0050>
- CMP0049: Do not expand variables in target source entries. </policy/CMP0049>
- CMP0048: project() command manages VERSION variables. </policy/CMP0048>
- CMP0047: Use QCC compiler id for the qcc drivers on QNX. </policy/CMP0047>
- CMP0046: Error on non-existent dependency in add_dependencies. </policy/CMP0046>
- CMP0045: Error on non-existent target in get_target_property. </policy/CMP0045>
- CMP0044: Case sensitive Lang_COMPILER_ID generator expressions. </policy/CMP0044>
- CMP0043: Ignore COMPILE_DEFINITIONS_Config properties. </policy/CMP0043>
- CMP0042: MACOSX_RPATH is enabled by default. </policy/CMP0042>
- CMP0041: Error on relative include with generator expression. </policy/CMP0041>
- CMP0040: The target in the TARGET signature of add_custom_command() must exist. </policy/CMP0040>
- CMP0039: Utility targets may not have link dependencies. </policy/CMP0039>
- CMP0038: Targets may not link directly to themselves. </policy/CMP0038>
- CMP0037: Target names should not be reserved and should match a validity pattern. </policy/CMP0037>
- CMP0036: The build_name command should not be called. </policy/CMP0036>
- CMP0035: The variable_requires command should not be called. </policy/CMP0035>
- CMP0034: The utility_source command should not be called. </policy/CMP0034>
- CMP0033: The export_library_dependencies command should not be called. </policy/CMP0033>
- CMP0032: The output_required_files command should not be called. </policy/CMP0032>
- CMP0031: The load_command command should not be called. </policy/CMP0031>
- CMP0030: The use_mangled_mesa command should not be called. </policy/CMP0030>
- CMP0029: The subdir_depends command should not be called. </policy/CMP0029>
- CMP0028: Double colon in target name means ALIAS or IMPORTED target. </policy/CMP0028>
- CMP0027: Conditionally linked imported targets with missing include directories. </policy/CMP0027>
- CMP0026: Disallow use of the LOCATION target property. </policy/CMP0026>
- CMP0025: Compiler id for Apple Clang is now AppleClang. </policy/CMP0025>
- CMP0024: Disallow include export result. </policy/CMP0024>
-
-Policies Introduced by CMake 2.8
-================================
-
-.. toctree::
- :maxdepth: 1
-
- CMP0023: Plain and keyword target_link_libraries signatures cannot be mixed. </policy/CMP0023>
- CMP0022: INTERFACE_LINK_LIBRARIES defines the link interface. </policy/CMP0022>
- CMP0021: Fatal error on relative paths in INCLUDE_DIRECTORIES target property. </policy/CMP0021>
- CMP0020: Automatically link Qt executables to qtmain target on Windows. </policy/CMP0020>
- CMP0019: Do not re-expand variables in include and link information. </policy/CMP0019>
- CMP0018: Ignore CMAKE_SHARED_LIBRARY_Lang_FLAGS variable. </policy/CMP0018>
- CMP0017: Prefer files from the CMake module directory when including from there. </policy/CMP0017>
- CMP0016: target_link_libraries() reports error if its only argument is not a target. </policy/CMP0016>
- CMP0015: link_directories() treats paths relative to the source dir. </policy/CMP0015>
- CMP0014: Input directories must have CMakeLists.txt. </policy/CMP0014>
- CMP0013: Duplicate binary directories are not allowed. </policy/CMP0013>
- CMP0012: if() recognizes numbers and boolean constants. </policy/CMP0012>
-
-Policies Introduced by CMake 2.6
-================================
-
-.. toctree::
- :maxdepth: 1
-
- CMP0011: Included scripts do automatic cmake_policy PUSH and POP. </policy/CMP0011>
- CMP0010: Bad variable reference syntax is an error. </policy/CMP0010>
- CMP0009: FILE GLOB_RECURSE calls should not follow symlinks by default. </policy/CMP0009>
- CMP0008: Libraries linked by full-path must have a valid library file name. </policy/CMP0008>
- CMP0007: list command no longer ignores empty elements. </policy/CMP0007>
- CMP0006: Installing MACOSX_BUNDLE targets requires a BUNDLE DESTINATION. </policy/CMP0006>
- CMP0005: Preprocessor definition values are now escaped automatically. </policy/CMP0005>
- CMP0004: Libraries linked may not have leading or trailing whitespace. </policy/CMP0004>
- CMP0003: Libraries linked via full path no longer produce linker search paths. </policy/CMP0003>
- CMP0002: Logical target names must be globally unique. </policy/CMP0002>
- CMP0001: CMAKE_BACKWARDS_COMPATIBILITY should no longer be used. </policy/CMP0001>
- CMP0000: A minimum required CMake version must be specified. </policy/CMP0000>