111 lines
3.8 KiB
Markdown
111 lines
3.8 KiB
Markdown
# Portable Foreign Function Interface for R7RS schemes
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Foreign function interface that is supported on multiple R7RS Sceheme implementations.
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Note that this software is in **alpha** stage. That said the interface should not be changing anymore.
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Any help in form of constructive advice and bug reports are appreciated.
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[Documentation](https://retropikzel.neocities.org/r7rs-pffi/) or run mkdocs serve or see docs/.
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[Issue tracker](https://todo.sr.ht/~retropikzel/r7rs-pffi)
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[Maling lists](https://sr.ht/~retropikzel/r7rs-pffi/lists)
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For documentation see [retropikzel.neocities.org/r7rs-pffi](retropikzel.neocities.org/r7rs-pffi)
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or run mkdocs serve or see or docs/ directory.
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# Goals
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- Support only R7RS implementations
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- Needs to have cond-expand and library support atleast (propably much more)
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- Same interface on all implementations
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- Some things that are procedures on one implementation are macros on other,
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but they must behave the same
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# Non goals
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- To support all R7RS implementations
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- To have every possible FFI feature
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- Compiling of C code at any point
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- That is no stubs, no C code generated by the library and so on
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# Support tiers
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Support is defined in tiers, each tier has short explanation about it after the title.
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Currently the interface of the library is okay. Now work needs to be done to make tests and see
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that each implementation passes those tests. This will be done in tiered order starting from tier 1.
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## Tier 1
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- [Chicken](https://www.call-cc.org/)
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- [Guile](https://www.gnu.org/software/guile/)
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- [Kawa](https://www.gnu.org/software/kawa/index.html)
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- Needs at least java version 22
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- Needs jvm flags:
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- --add-exports java.base/jdk.internal.foreign.abi=ALL-UNNAMED
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- --add-exports java.base/jdk.internal.foreign.layout=ALL-UNNAMED
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- --add-exports java.base/jdk.internal.foreign=ALL-UNNAMED
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- --enable-native-access=ALL-UNNAMED
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- [Sagittarius](https://bitbucket.org/ktakashi/sagittarius-scheme/wiki/Home)
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- [Racket](https://racket-lang.org/)
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## Tier 2
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- [Gambit](https://gambitscheme.org)
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- Propably able to support everything but so annoying to deal with that it's currently in tier 2
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- Still needs work
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- [STKlos](https://stklos.net/)
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- No callback support
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- Still needs work
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- [Cyclone](https://justinethier.github.io/cyclone/)
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- No callback support
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- Still needs work
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## Tier 3
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- [LIPS](https://lips.js.org/)
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- Waiting for implementation to have cond-expand and library support
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- Will only work on nodejs
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- [Biwascheme](https://www.biwascheme.org/)
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- Waiting for implementation to have cond-expand and library support
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- Will only work on nodejs
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## Tier 4
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Support needs to be investigated.
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- [Gerbil](https://cons.io/)
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- [Ypsilon](http://www.littlewingpinball.com/doc/en/ypsilon/)
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- [Larceny](https://larcenists.org/)
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- [Mosh](https://mosh.monaos.org)
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- [Skint](https://github.com/false-schemers/skint)
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## Tier 5
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Support maybe possible/dreaming about.
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- [Airship](https://gitlab.com/mbabich/airship-scheme)
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- [Other gambit targets](https://gambitscheme.org/)
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- Gambit compiles to different targets other than C too, for example Javascript. It would be cool
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and interesting to see if this FFI could also support some of those
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## Tier 6
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Not supported currently, and may never be.
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- [Chibi](https://synthcode.com/scheme/chibi)
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- FFI requires C code
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- [MIT-Scheme](https://www.gnu.org/software/mit-scheme/)
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- FFI requires C code
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- [tr7](https://gitlab.com/jobol/tr7)
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- FFI requires C code
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- [Gauche](https://practical-scheme.net/gauche/)
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- FFI requires C code
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- [s7](https://scheme.fail://ccrma.stanford.edu/software/snd/snd/s7.html)
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- No library support
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- Might have other things missing too
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- [Loko](https://scheme.fail/)
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- Desires no C interop, I can respect that
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