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20 lines
1013 B
20 lines
1013 B
8 months ago
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``incremental``
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Compiles each Swift source in the module separately, resulting in better
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parallelism in the build. The compiler emits additional information into
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the build directory improving rebuild performance when small changes are made
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to the source between rebuilds. This is the best option to use while
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iterating on changes in a project.
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``wholemodule``
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Whole-module optimizations are slowest to compile, but results in the most
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optimized library. The entire context is loaded into once instance of the
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compiler, so there is no parallelism across source files in the module.
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``singlefile``
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Compiles each source in a Swift modules separately, resulting in better
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parallelism. Unlike the ``incremental`` build mode, no additional information
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is emitted by the compiler during the build, so rebuilding after making small
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changes to the source file will not run faster. This option should be used
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sparingly, preferring ``incremental`` builds, unless working around a compiler
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bug.
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