Kotlin classes aren't being generated for blank C ...

# kotlin-native

[napperley]

Kotlin classes aren't being generated for blank C Structs. Is this normal behaviour for K/N C interop? Below is the definition of the structs from the gpiod.h file:

struct gpiod_chip;
struct gpiod_line;
struct gpiod_chip_iter;
struct gpiod_line_iter;
struct gpiod_line_bulk;

[napperley]

Presumably I can get around this by passing around a CPointer<*> type, and converting it via the reinterpret function in the relevant function, e.g.:

private fun toggleGpioPin(chip: CPointer<*>, line: CPointer<*>) {
var value = 0
while (true) {
sleep(1u)
value = if (value == 0) 1 else 0
if (gpiod_line_set_value(line.reinterpret(), value) == -1) {
gpiod_chip_close(chip.reinterpret())
throw IllegalStateException("Cannot set value for GPIO pin")
}
}
}

[Adam S]

iirc you can import them as as cname structs (e.g. import cnames.structs.gpiod_chip). cname structs are unrelated to cinterop, and the Kotlin compiler will just pretend that there's a struct with that name, but it might fail at runtime

https://kotlinlang.org/docs/native-c-interop.html#forward-declarations

[napperley]

Would the, might fail at runtime be applicable regardless of whether the library is statically or dynamically linked?

[napperley]

After trying out what you have suggested the program didn't fail at runtime 😄 .

[Adam S]

d'oh, I'm misremembering then

[Adam S]

did it help though, importing them with cnames.structs?