Re: Initializing D in C to use?

[bachmeier via Digitalmars-d-learn]

On Friday, 17 October 2014 at 17:18:34 UTC, Adam D. Ruppe wrote:
On Friday, 17 October 2014 at 16:35:46 UTC, Jeremy DeHaan wrote:
I remember reading something(but my googlefu is weak today) 
about having to initialize the runtime if you are using D 
inside another language. Can anyone confirm this is the case?

Yeah, unless the main() is in D, you need to run initialization 
functions.

The way I recommend doing it is to write your own extern(C) 
MyLib_Init and MyLib_Term functions. Then have their 
implementations call the import core.runtime; 
Runtime.initialize()

http://dlang.org/phobos/core_runtime.html#initialize

This way, you can do other init stuff for your lib too without 
the user worrying about those details. Furthermore, having to 
call a library init function is somewhat normal for C libs, so 
the user shouldn't think much of it.

Just for completeness, here's an example for Googlers that come 
across this, taken from code I write all the time:

import core.runtime;

extern(C) {
  void R_init_libfoo() {
    Runtime.initialize();
  }
}