How to use a function without their sources

[nazriel]

On Friday, 18 January 2013 at 18:34:24 UTC, Jordi Sayol wrote:
> Al 18/01/13 18:47, En/na nazriel ha escrit:
>> On Friday, 18 January 2013 at 17:02:51 UTC, Jordi Sayol wrote:
>>> Is there a way to use a function from a static D library 
>>> without importing their D sources nor their DI interface?
>> 
>> lib.d:
>> 
>> extern(C) void printf(const char*, ...);
>> 
>> void foo() {
>>     printf("%s".ptr, "hi".ptr);   }
>> 
>> test.d:
>> 
>> extern(C) void _D3lib3fooFZv();
>> 
>> void main() {
>>     _D3lib3fooFZv();
>> }
>> 
>> Hehe.
>> 
>> Now, to be honest that is a good question. How to handle name 
>> mangling?
>> Maybe pragma(mangleOf, "") by Alex Petterson could help.
>> 
>
> Thanks!
>
> Why it works with "extern(C)", but not works with "extern(D)"?

I shouldn't paste this code in first place.

As far as I know and other folks mentioned there is no "clean" 
way to call function from D library without using .DI files or 
marking function in library as extern (C).

You can always look up symbol table like I did for this example.

Summary:
If you write library - you can mark function as extern (C) to 
call it later from other app without .DI fil.
You need to create .DI file if you use someone else library.