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36 lines
1.3 KiB
ReStructuredText
36 lines
1.3 KiB
ReStructuredText
*************************
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C with Reference Counting
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*************************
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There is an experimental code generator which compiles to an executable via C,
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using a reference counting garbage collector. This is intended as a lightweight
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(i.e. minimal dependencies) code generator that can be ported to multiple
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platforms, especially those with memory constraints.
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Performance is not as good as the Scheme based code generators, partly because
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the reference counting has not yet had any optimisation, and partly because of
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the limitations of C. However, the main goal is portability: the generated
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code should run on any platform that supports a C compiler.
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This code generator can be accessed via the REPL command:
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::
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Main> :set cg refc
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Alternatively, you can set it via the ``IDRIS2_CG`` environment variable:
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::
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$ export IDRIS2_CG=refc
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The C compiler it invokes is determined by either the ``IDRIS2_CC`` or ``CC``
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environment variables. If neither is set, it uses ``cc``.
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This code generator does not yet support `:exec`, just `:c`.
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Also note that, if you link with any dynamic libraries for interfacing with
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C, you will need to arrange for them to be accessible via ``LD_LIBRARY_PATH``
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when running the executable. The default Idris 2 support libraries are
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statically linked.
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