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28 lines
1.1 KiB
ReStructuredText
28 lines
1.1 KiB
ReStructuredText
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CMP0097
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-------
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.. versionadded:: 3.16
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:command:`ExternalProject_Add` with ``GIT_SUBMODULES ""`` initializes no
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submodules. The policy also applies to :command:`FetchContent_Declare`,
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which uses the same download and update features as
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:command:`ExternalProject_Add`.
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The commands provide a ``GIT_SUBMODULES`` option which controls what submodules
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to initialize and update. Starting with CMake 3.16, explicitly setting
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``GIT_SUBMODULES`` to an empty string means no submodules will be initialized
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or updated.
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This policy provides compatibility for projects that have not been updated
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to expect the new behavior.
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The ``OLD`` behavior for this policy is for ``GIT_SUBMODULES`` when set to
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an empty string to initialize and update all git submodules.
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The ``NEW`` behavior for this policy is for ``GIT_SUBMODULES`` when set to
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an empty string to initialize and update no git submodules.
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This policy was introduced in CMake version 3.16. Use the
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:command:`cmake_policy` command to set it to ``OLD`` or ``NEW`` explicitly.
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Unlike most policies, CMake version |release| does *not* warn
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when this policy is not set and simply uses ``OLD`` behavior.
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