I just have simply more experience with `nimterop` (the first one I used), and
now I end up using most of the times `c2nim`. Given that sometimes both fails I
end up using `c2nim` and `nimterop` in order to get inspiration about how to
get thinks working.
I tried `cinterop` once, but I think it is only worth it when you are
interested in using only a small portion from a library.
Regarding `futhark`, I have never tried it. I just tried the following:
import futhark
importc:
path "/usr/include/leptonica"
"allheaders.h"
{.passL:"-lleptopnica".}
var inputPix = pixRead("/home/jose/docs/scanned/salida.png".cstring)
var rotatedPix = pixRotate90(inputPix, 1.cint)
discard pixWrite("rotated_image.jpg".cstring, rotatedPix,
IFF_JFIF_JPEG.cint)
Run
But it fails with:
➜ src nim c leptonica.nim
Hint: used config file
'/home/jose/.choosenim/toolchains/nim-2.0.2/config/nim.cfg' [Conf]
Hint: used config file
'/home/jose/.choosenim/toolchains/nim-2.0.2/config/config.nims' [Conf]
..............................................................................................................................................
/home/jose/.nimble/pkgs2/futhark-0.12.2-cd781cfc8519fb2353979af90972e6749ab5a3ac/futhark.nim(716,
7) Hint: Running: opir -I/usr/include/leptonica -I/usr/lib/clang/16/include
/home/jose/.cache/nim/leptonica_d/futhark-includes.h [User]
/home/jose/.nimble/pkgs2/futhark-0.12.2-cd781cfc8519fb2353979af90972e6749ab5a3ac/futhark.nim(734,
3) Hint: Parsing Opir output [User]
stack trace: (most recent call last)
/home/jose/.nimble/pkgs2/futhark-0.12.2-cd781cfc8519fb2353979af90972e6749ab5a3ac/futhark.nim(738,
13) importcImpl
/home/jose/.choosenim/toolchains/nim-2.0.2/lib/pure/json.nim(1040, 23)
parseJson
/home/jose/.choosenim/toolchains/nim-2.0.2/lib/pure/json.nim(953, 4)
parseJson
/home/jose/.choosenim/toolchains/nim-2.0.2/lib/pure/parsejson.nim(113, 15)
open
/home/jose/.choosenim/toolchains/nim-2.0.2/lib/pure/lexbase.nim(150, 13)
open
/home/jose/.choosenim/toolchains/nim-2.0.2/lib/pure/lexbase.nim(89, 32)
fillBuffer
/home/jose/.choosenim/toolchains/nim-2.0.2/lib/pure/streams.nim(254, 31)
readDataStr
/home/jose/.choosenim/toolchains/nim-2.0.2/lib/pure/streams.nim(1219, 50)
ssReadDataStr
/home/jose/.choosenim/toolchains/nim-2.0.2/lib/system/indices.nim(86, 12) []
/home/jose/src/nimlang/leptonica_futhark/src/leptonica.nim(3, 1)
template/generic instantiation of `importc` from here
/home/jose/.nimble/pkgs2/futhark-0.12.2-cd781cfc8519fb2353979af90972e6749ab5a3ac/futhark.nim(660,
14) template/generic instantiation of `importcImpl` from here
/home/jose/.choosenim/toolchains/nim-2.0.2/lib/system/indices.nim(86, 12)
Error: interpretation requires too many iterations; if you are sure this is not
a bug in your code, compile with `--maxLoopIterationsVM:number` (current value:
10000000)
Run
I don't know if I am using it correctly.
I think futhark would benefit from having links to some working examples. If
you look at `nimterop`, they have
[this](https://github.com/nimterop/nimterop/wiki/Wrappers) that can serve as
inspiration.
