Calling a D function from C

[Michal Minich]

V Fri, 12 Nov 2010 16:14:30 +0100, Carlo wrote:

> Sorry if I bother you again with this probably silly problem. Here is
> the point. I want to call the D function "fun" from a .c file:
> 
> \\file libforc.d
> extern (C) int fun(int x,int y){
>          return x;
> }
> \\EOF
> 
> \\file ctest.c
> #include <stdio.h>
> 
> int fun(int,int);
> 
> int main(int argc, char* argv[])
> {
>       printf("%d",fun(2,3));
> 
>       return 0;
> }
> \\EOF
> 
> This what I get trying to compile the .c file:
> 
> $ dmd libforc.d -c
> $ gcc libforc.o ctest.c -m32
> libforc.o: In function `no symbol':
> libforc.d:(.text+0x8): undefined reference to `_Dmodule_ref' collect2:
> ld returned 1 exit status
> 
> What did I miss?

You probably need to include phobos library in gcc command line.