On 7/27/20 3:50 AM, Jacob Carlborg wrote:> On 2020-07-27 03:03, Paul
Backus wrote:
>
>> extern(C) void hello()
>> {
>> import std.stdio: writeln;
>> writeln("Hello from D!");
>> }
>
> The D runtime needs to be initialized first [1]. Then it should be
> terminated as well [2].
>
> [1] https://dlang.org/phobos/core_runtime.html#.rt_init
> [2] https://dlang.org/phobos/core_runtime.html#.rt_term
>
They should be taken care of when the program is linked with a D compiler.
Otherwise, e.g. when the extern(C) code is part of a library written in
D, one way of doing it is to add the following two functions to the
library. (Typing by hand; may have typos).
import core.runtime;
pragma (crt_constructor)
extern (C)
int lib_init() {
return Runtime.initialize() ? 0 : 1;
}
pragma (crt_destructor)
extern (C)
int lib_deinit() {
return Runtime.terminate() ? 0 : 1;
}
Ali
