I have continued reading the bibliography on ffi but I cannot find the solution. Please, can anyone help me?. gustavo -------- Original Message -------- Subject: Re: Foreign import From: "Gustavo Villavicencio" <gustavov@ucse.edu.ar> Date: Tue, March 4, 2003 8:35 pm To: <chak@cse.unsw.edu.au> Thanks Manuel The error message is as follows -------------------------------------- CallIncr.o: In function `sWM_entry': CallIncr.o:(.text+0xc5): undefined reference to `incr' collect2: ld returned 1 exit status -------------------------------------- where 'incr' is a toy function defined in 'mylib.h'. Obviously, in the foreign declaration I have changed 'myfun' by 'incr'. The compilation command is the typical ghc -ffi -c CallIncr.hs followed by ghc -ffi CallIncr.o which generate the previous error. Thanks again, gustavo Manuel M T Chakravarty said:
"Gustavo Villavicencio" <gustavov@ucse.edu.ar> wrote,
I'm a new ffi user and I have some problems with foreign import declaration. I'm don't have any problem to access C standard functions. However, I cannot access to my own functions in mylib.h by means of
foreign import "mylib.h myfun" hmyfun :: ...
May be I'm omitting some compilation step or parameter also, since I'm applying the same compilation process to call C standard functions.
I'm working with ghc 5.04 on SuSe Linux 7.0.
You should say what goes wrong. Eg, paste the error messages of the compiler and/or linker into your email.
Manuel