Just found a weird error with cinterop on OSX.

# kotlin-native

[Iaroslav Postovalov]

Just found a weird error with cinterop on OSX.

[atsushi-koshikizawa]

Have you declared the path to gsl/gsl_blas.h ?
It looks like Kotlin compler cannot find it.
Could you show me your *.def file and cinterop block in build.gradle.kts?

see also: https://kotlinlang.org/docs/reference/native/gradle_plugin.html#cinterop-support

[Iaroslav Postovalov]

https://github.com/mipt-npm/kmath/blob/gsl-experiment/kmath-gsl/build.gradle.kts
https://github.com/mipt-npm/kmath/blob/gsl-experiment/kmath-gsl/src/nativeInterop/cinterop/libgsl.def

[aleksey.tomin]

I haven’t understood what you want, but if I were you I would not use headerFilterOnly("/usr/include/", "/usr/local/") and headerFilter=gsl/** the same time.

[Iaroslav Postovalov]

The headers on OSX are installed to /usr/local/gsl/...

[aleksey.tomin]

May be use compilerOpts = -I /usr/local/gsl ?

[Iaroslav Postovalov]

So, compilerOpts property is equal to includeDirs?

[atsushi-koshikizawa]

If the header gsl_blas.h locates at /usr/include/gsl/gsl_blas.h, compilerOpts must be -I/usr/include, not -I/usr/include/gsl.
-I parameter in compilerOpts is equal to includeDirs in build.gradle.kts .

[atsushi-koshikizawa]

kmath-gsl/build.gradle.kts

val libgsl by creating {
    includeDirs {
        defFile = File(projectDir, "src/nativeInterop/cinterop/libgsl.def")
    }
}

[Iaroslav Postovalov]

Oh, thank you