Hi all. I'm having trouble with using green-card 2 on Windows with GHC-4.08.2. As the default output for -target ghc seems to be for the C back-end rather than native code, I thought I would try the FFI target. Using the example from the green-card doc: --------------------------------------------- module GCTest where import StdDIS %fun my_sin :: Double -> Double %code res1=sin(arg1); --------------------------------------------- Compiling for target FFI: --------------------------------------------- green-card -c GCTest.gc -o GCTest.hs --target ffi ghc -c GCTest.hs -fglasgow-exts --------------------------------------------- Linking with this main module: --------------------------------------------- module Main(main) where import GCTest main :: IO() main = putStrLn (show (my_sin (20.0))) --------------------------------------------- I get: --------------------------------------------- $ ghc main.hs -o main.exe GCTest.o StdDIS.o -package lang -package greencard Compilation IS NOT required GCTest.o(.text+0x7f):fake: undefined reference to `prim_my_sin' StdDIS.o(.text+0x549):fake: undefined reference to `prim_free' StdDIS.o(.text+0x600):fake: undefined reference to `prim_allocCharStar' StdDIS.o(.text+0x731):fake: undefined reference to `prim_readCharAddr' StdDIS.o(.text+0xc84):fake: undefined reference to `prim_malloc' StdDIS.o(.text+0xd38):fake: undefined reference to `access_prim_malloc_res1' StdDIS.o(.text+0xdec):fake: undefined reference to `access_prim_malloc_gc_failed ' StdDIS.o(.text+0xea0):fake: undefined reference to `access_prim_malloc_gc_failst ring' StdDIS.o(.text+0x1206):fake: undefined reference to `prim_writeCharAddr' collect2: ld returned 1 exit status --------------------------------------------- Where have I gone wrong? Cheers Mike Thomas.