# plugin.nimvar data = 0{.push dynlib exportc.}proc setup*(num:int) =  data = num  echo "Plugin Setup!"proc getData*: int = data{.pop.}

# app.nimimport dynlibtype  SetupProc = proc(num:int) {.nimcall.}  GetDataProc = proc(): int {.nimcall.}proc testPlugin(path:string) =  let lib = loadLib(path)  if lib != nil:    let setupAddr = lib.symAddr("setup")    let getDataAddr = lib.symAddr("getData")        if setupAddr != nil and getDataAddr != nil:      let setup = cast[SetupProc](setupAddr)      let getData = cast[GetDataProc](getDataAddr)            setup(123)      echo "Plugin Data: ", getData()        unloadLib(lib)testPlugin("./libplugin.so") # unix pathtestPlugin("./libplugin.dylib")

$ nim c --app:lib plugin$ nim c -r appPlugin Setup!Plugin Data: 123

nimcall其实就是fastcall.

如果想使用nim来写dll可以参考:

代码转自