• kll <kl mailinator.com> Feb 28 2009
• Jarrett Billingsley <jarrett.billingsley gmail.com> Feb 28 2009
• kll <kl mailinator.com> Mar 02 2009
• Jarrett Billingsley <jarrett.billingsley gmail.com> Mar 02 2009

kll <kl mailinator.com> writes:

Can D code be linked as part of C programs?

e.g. can I write Apache module (dynamically linked .so file) using D?

I wonder if that's a matter of sneaking in D's runtime, starting GC, etc., or
is it not possible at all?

Jarrett Billingsley <jarrett.billingsley gmail.com> writes:

On Sat, Feb 28, 2009 at 3:40 PM, kll <kl mailinator.com> wrote:
 Can D code be linked as part of C programs?

 e.g. can I write Apache module (dynamically linked .so file) using D?


Sure.

 I wonder if that's a matter of sneaking in D's runtime, starting GC, etc., or
is it not possible at all?


That's precisely what you do.  If you compile the D piece of your
program as a lib, including its runtime, you should be able to link C
code to it.  You'll have to call the runtime startup/teardown
functions yourself, but it should work.  I'm pretty sure people have
made Apache modules in D before.

kll <kl mailinator.com> writes:

Jarrett Billingsley Wrote:

 e.g. can I write Apache module (dynamically linked .so file) using D?


 Sure.
 
 I wonder if that's a matter of sneaking in D's runtime, starting GC, etc., or
is it not possible at all?


 That's precisely what you do.  If you compile the D piece of your
 program as a lib, including its runtime, you should be able to link C
 code to it.  You'll have to call the runtime startup/teardown
 functions yourself, but it should work.  I'm pretty sure people have
 made Apache modules in D before.


Sorry, I couldn't find information how to do this (I'm a D noob). D site has
only info how to link C with D, not D with C. 

It seems that DLL's a close to what I need (and I've found Apache module that
uses them), but I'm not interested in Windows platform at all, I'm looking for
Linux and OS X solution.

Where should I look for this?

Jarrett Billingsley <jarrett.billingsley gmail.com> writes:

On Mon, Mar 2, 2009 at 7:57 AM, kll <kl mailinator.com> wrote:
 Jarrett Billingsley Wrote:

 e.g. can I write Apache module (dynamically linked .so file) using D?


 Sure.

 I wonder if that's a matter of sneaking in D's runtime, starting GC, e=






 That's precisely what you do. =A0If you compile the D piece of your
 program as a lib, including its runtime, you should be able to link C
 code to it. =A0You'll have to call the runtime startup/teardown
 functions yourself, but it should work. =A0I'm pretty sure people have
 made Apache modules in D before.


 Sorry, I couldn't find information how to do this (I'm a D noob). D site =


 It seems that DLL's a close to what I need (and I've found Apache module =


king for Linux and OS X solution.
 Where should I look for this?


It's strange, there doesn't seem to be much info on building shared
libraries on Linux or OSX.  It's actually pretty simple to do so.

For one, I know you can't use DMD on Linux to build SOs.  You'll have
to use either GDC or LDC.  I don't know what the situation is on OSX,
but perhaps DMD will build dylibs correctly there since Walter's done
a lot more work on making it generate correct position-independent
code.  I have no idea, though.

To build an SO, you more or less just build your library as normal,
and just link it a bit differently.  I think DSSS/rebuild will also
insert the init/fini code necessary for setting up and tearing down
the runtime when the SO is loaded and unloaded.  That's probably your
best bet.