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neonichu/DynamicFunctions.swift

Created October 7, 2014 21:50
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Using dlopen / dlsym to call C functions from Swift
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DynamicFunctions.swift
import Darwin
let handle = dlopen("/usr/lib/libc.dylib", RTLD_NOW)
let sym = dlsym(handle, "random")
let functionPointer = UnsafeMutablePointer<() -> CLong>(sym)
let result = functionPointer.memory()
println(result)
@kjunichi
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Hello! Thanks your code.I made it work.

import Darwin

let handle = dlopen("/usr/lib/libc.dylib", RTLD_NOW)
let sym = dlsym(handle, "random")

typealias randomFunc = @convention(c) () -> CInt
let f = unsafeBitCast(sym, randomFunc.self)
let result = f()
dlclose(handle)
print(result)

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