102 lines
3.9 KiB
Markdown
102 lines
3.9 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 trackers](https://sr.ht/~retropikzel/r7rs-pffi/trackers)
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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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For status of what tests pass on which implementations see
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[Jenkins](https://jenkins.staging.scheme.org/job/r7rs-pffi/job/master/).
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## Goals
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- Support only R7RS implementations
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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 have every possible FFI feature
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- Compiling of used library 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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- The pffi library itself may require compilation on installation
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## Known issues that are worked on
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- Passing struct does not work on Chicken
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- For example [SDL2-ttf TTF_RenderUTF8_Solid](https://wiki.libsdl.org/SDL2_ttf/TTF_RenderUTF8_Solid)
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wants the color to be passed as struct.
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- Not a problem on Guile, Sagittarius or Racket
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- Cyclone status unknown, assumed same as Chicken
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## Status
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Currently the interface of the library is in okay shape. It propably will not change much but no
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guarantees are being made just yet.
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### Usable
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- [Guile](https://www.gnu.org/software/guile/)
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- [Sagittarius](https://bitbucket.org/ktakashi/sagittarius-scheme/wiki/Home)
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- [Chicken 5](https://www.call-cc.org/)
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- Needs [r7rs egg](https://wiki.call-cc.org/eggref/5/r7rs)
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- [Racket](https://racket-lang.org/)
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- Needs [racket-r7rs](https://github.com/lexi-lambda/racket-r7rs)
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### Work in progress
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- [Cyclone](https://justinethier.github.io/cyclone/)
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- No callbacks implemented yet
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- [Kawa](https://www.gnu.org/software/kawa/index.html)
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- No callbacks implemented yet
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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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- [Gambit](https://gambitscheme.org)
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- [Mosh](https://mosh.monaos.org)
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- [STKlos](https://stklos.net/)
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### Design/exploration
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- [LIPS](https://lips.js.org/)
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- Will work on nodejs by using some Javascript FFI
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- Javascript side needs design
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- [Biwascheme](https://www.biwascheme.org/)
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- Will work on nodejs by using some Javascript FFI
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- Javascript side needs design
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- [Chibi](https://synthcode.com/scheme/chibi)
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- [MIT-Scheme](https://www.gnu.org/software/mit-scheme/)
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- [tr7](https://gitlab.com/jobol/tr7)
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- [Gauche](https://practical-scheme.net/gauche/)
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- [s7](https://scheme.fail://ccrma.stanford.edu/software/snd/snd/s7.html)
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- [Gerbil](https://cons.io/)
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- Should be possible as built on gambit, but makes sense to make gambit support first
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- [Ypsilon](http://www.littlewingpinball.com/doc/en/ypsilon/)
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- [Larceny](https://larcenists.org/)
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- [Skint](https://github.com/false-schemers/skint)
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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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- [s48-r7rs](https://codeberg.org/prescheme/s48-r7rs)
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- [prescheme](https://codeberg.org/prescheme/prescheme)
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### Will/can not be supported
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- [Loko](https://scheme.fail/)
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- Desires no C interop, I can respect that
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