CMAKE_MSVC_RUNTIME_CHECKS

.. versionadded:: 4.0

Select the list of enabled runtime checks when targeting the MSVC ABI. This variable is used to initialize the :prop_tgt:MSVC_RUNTIME_CHECKS property on all targets as they are created. It is also propagated by calls to the :command:try_compile command into the test project.

The allowed values are:

.. include:: ../prop_tgt/include/MSVC_RUNTIME_CHECKS-VALUES.rst

Use :manual:generator expressions <cmake-generator-expressions(7)> to support per-configuration specification. For example, the code:

.. code-block:: cmake

set(CMAKE_MSVC_RUNTIME_CHECKS "$<$CONFIG:Debug,RelWithDebInfo:PossibleDataLoss;UninitializedVariable>")

enables for the target foo the possible data loss and uninitialized variables checks for the Debug and RelWithDebInfo configurations.

If this variable is not set, the :prop_tgt:MSVC_RUNTIME_CHECKS target property will not be set automatically. If that property is not set, CMake selects runtime checks using the default value $<$<CONFIG:Debug>:StackFrameErrorCheck;UninitializedVariable>, if supported by the compiler, or empty value otherwise.

.. note::

This variable has effect only when policy :policy:CMP0184 is set to NEW prior to the first :command:project or :command:enable_language command that enables a language using a compiler targeting the MSVC ABI.