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33 lines
1.4 KiB
ReStructuredText
33 lines
1.4 KiB
ReStructuredText
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CMP0098
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-------
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.. versionadded:: 3.17
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:module:`FindFLEX` runs ``flex`` in directory
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:variable:`CMAKE_CURRENT_BINARY_DIR` when executing.
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The module provides a ``FLEX_TARGET`` macro which generates FLEX output.
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In CMake 3.16 and below the macro would generate a custom command that runs
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``flex`` in the current source directory. CMake 3.17 and later prefer to
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run it in the build directory and use :variable:`CMAKE_CURRENT_BINARY_DIR`
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as the ``WORKING_DIRECTORY`` of its :command:`add_custom_command` invocation.
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This ensures that any implicitly generated file is written relative to the
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build tree rather than the source tree, unless the generated file is
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provided as absolute path.
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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 ``FLEX_TARGET`` to use
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the current source directory for the ``WORKING_DIRECTORY`` and where
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to generate implicit files. The ``NEW`` behavior of this policy is to
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use the current binary directory for the ``WORKING_DIRECTORY`` relative to
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which implicit files are generated unless provided as absolute path.
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This policy was introduced in CMake version 3.17. Use the
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:command:`cmake_policy` command to set it to ``OLD`` or ``NEW`` explicitly.
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Unlike many 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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.. include:: DEPRECATED.txt
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