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2b2344b412
Replace our hard-coded default for `/RTC1` with a first-class abstraction to select runtime checks from an enumeration of logical names. Add a `MSVC_RUNTIME_CHECKS` target property and corresponding `CMAKE_MSVC_RUNTIME_CHECKS` variable. Removing the old default flag requires a policy because existing projects may rely on string processing to edit them and choose runtime checks under the old behavior. Add policy CMP0184 to provide compatibility. Fixes: #26614
37 lines
1.4 KiB
ReStructuredText
37 lines
1.4 KiB
ReStructuredText
CMAKE_MSVC_RUNTIME_CHECKS
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-------------------------
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.. versionadded:: 4.0
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Select the list of enabled runtime checks when targeting the MSVC ABI.
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This variable is used to initialize the
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:prop_tgt:`MSVC_RUNTIME_CHECKS` property on all targets as they are
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created. It is also propagated by calls to the :command:`try_compile` command
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into the test project.
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The allowed values are:
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.. include:: ../prop_tgt/MSVC_RUNTIME_CHECKS-VALUES.txt
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Use :manual:`generator expressions <cmake-generator-expressions(7)>` to
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support per-configuration specification. For example, the code:
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.. code-block:: cmake
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set(CMAKE_MSVC_RUNTIME_CHECKS "$<$<CONFIG:Debug,RelWithDebInfo>:PossibleDataLoss;UninitializedVariable>")
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enables for the target ``foo`` the possible data loss and uninitialized variables checks
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for the ``Debug`` and ``RelWithDebInfo`` configurations.
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If this variable is not set, the :prop_tgt:`MSVC_RUNTIME_CHECKS`
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target property will not be set automatically. If that property is not set,
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CMake selects runtime checks using the default value
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``$<$<CONFIG:Debug>:StackFrameErrorCheck;UninitializedVariable>``,
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if supported by the compiler, or empty value otherwise.
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.. note::
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This variable has effect only when policy :policy:`CMP0184` is set to ``NEW``
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prior to the first :command:`project` or :command:`enable_language` command
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that enables a language using a compiler targeting the MSVC ABI.
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