Calling D function from C

[Johan Granberg]

Jonathan Crapuchettes wrote:

> Is there a way to compile a D object file with some C code? I am looking
> into creating a PHP extension from D instead of C and as I see it, I would
> need to be able to create and interface function in C that can call a D
> function.
> 
> I tried a simple example of this, but ran into some linking problems. The
> example follows:
> 
> ------------- D code -----------------
> import std.stdio;
> 
> extern (C)
> {
>      void test()
>      {
> test2();
>      }
> 
> } //end extern
> 
> void test2()
> {
>      writefln("test");
> }
> 
> ------------- C code -------------------
> #include <stdio.h>
> 
> void test();
> 
> int main(int argc, char* argv[])
> {
>      test();
> 
>      return 0;
> }
> 
> ------------ Compiled As ---------------
> /opt/dmd/bin/dmd test.d -c
> gcc main.c test.o -m32 -o tester -lphobos -lpthread -lm
> Linker Error...

The code looks ok to me, wath if you compile the c code first and then use
dmd to link it (dmd probably uses some linker flags you did not think of)