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59 lines
1.8 KiB
59 lines
1.8 KiB
UNITY_BUILD_MODE
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----------------
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CMake provides different algorithms for selecting which sources are grouped
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together into a *bucket*. Selection is decided by this property,
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which has the following acceptable values:
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``BATCH``
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When in this mode CMake determines which files are grouped together.
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The :prop_tgt:`UNITY_BUILD_BATCH_SIZE` property controls the upper limit on
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how many sources can be combined per unity source file.
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Example usage:
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.. code-block:: cmake
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add_library(example_library
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source1.cxx
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source2.cxx
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source3.cxx
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source4.cxx)
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set_target_properties(example_library PROPERTIES
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UNITY_BUILD_MODE BATCH
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UNITY_BUILD_BATCH_SIZE 2
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)
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``GROUP``
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When in this mode each target explicitly specifies how to group
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source files. Each source file that has the same
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:prop_sf:`UNITY_GROUP` value will be grouped together. Any sources
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that don't have this property will be compiled individually. The
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:prop_tgt:`UNITY_BUILD_BATCH_SIZE` property is ignored when using
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this mode.
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Example usage:
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.. code-block:: cmake
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add_library(example_library
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source1.cxx
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source2.cxx
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source3.cxx
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source4.cxx)
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set_target_properties(example_library PROPERTIES
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UNITY_BUILD_MODE GROUP
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)
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set_source_files_properties(source1.cxx source2.cxx source3.cxx
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PROPERTIES UNITY_GROUP "bucket1"
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)
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set_source_files_properties(source4.cxx
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PROPERTIES UNITY_GROUP "bucket2"
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)
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If no explicit :prop_tgt:`UNITY_BUILD_MODE` has been specified, CMake will
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default to ``BATCH``.
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