Criteria for 1.0 (was: Re: If D becomes a failure, what's the key reason, do you think?)

[Kirk McDonald]

Walter Bright wrote:
> Kirk McDonald wrote:
> 
>> Here's something that has been annoying me, and this week-old thread 
>> is as good a place as any to bring it up: Shared library support on 
>> Linux. I could not take D seriously if it did a "1.0" release without 
>> this. I do hate to cram more on your plate, Walter, but I consider 
>> this a more serious issue than even this import thing that has gripped 
>> the newsgroup for the past week.
> 
> 
> I know about the shared library issue on Linux. And to tell the truth, 
> I've been procrastinating on it. The big job, -fPIC, is done. I don't 
> know how much beyond that needs to be done.
> 
> Will the shared libraries work with GDC?

Ha! Well, at least this simple case does:

[myso2.d]
import std.stdio;

export extern(C)
void mysoprint() { writefln("Hello 'so' world!"); }

[myso.d]
export extern(C) void mysoprint();

[test.d]
import myso;

void main() {
     mysoprint();
}

$ gdc -shared -Wl,-soname,libmyso.so -o libmyso.so myso2.o -lc
/usr/bin/ld: warning: creating a DT_TEXTREL in object.

(Not sure what that means...)

$ sudo cp libmyso.so /usr/lib
$ gdc -c test.d
$ gdc test.o -Wl,-lmyso -o test
$ ./test
Hello 'so' world!

Sweet. However, I am a little concerned. When making DLLs on Windows, 
there is some boilerplate code needed to initialize and shut down the GC 
and do some other routine things. Is something like that needed here?

-- 
Kirk McDonald
Pyd: Wrapping Python with D
http://dsource.org/projects/pyd/wiki