• Sonia Hamilton (18/18) Dec 18 2012 Hi, I'm trying to get a "hello world" going to call a C function from
• Mike Parker (8/20) Dec 18 2012 Your problem isn't the command line options, but that you're
• Mike Parker (5/19) Dec 18 2012 I just took a look at the GLib docs and see that both of these
• Artur Skawina (20/37) Dec 18 2012 And if you don't want to do all of that manually, you could use
• Sonia Hamilton (3/52) Dec 19 2012 Thanks for all those replies, they really help :)

Sonia Hamilton <sonia snowfrog.net> writes:

Hi, I'm trying to get a "hello world" going to call a C function from
[1]glib. I'm having problems compiling, what would the correct command
line options?

% dmd -I/usr/include/glib-2.0 hello.d -L-L/usr/local/lib -L-lglib-2.0
hello.d(3): Error: undefined identifier GDateTime
hello.d(3): Error: undefined identifier GTimeZone

% cat hello.d
import std.stdio;
extern(C) GDateTime *g_date_time_new_now (GTimeZone *tz);
void main() {
  writeln("Hello, world");
  GDateTime *gdt;
}

I've got the [2]Interfacing to C page bookmarked :-)

Thanks for any help, Sonia.

References

1. http://developer.gnome.org/glib/2.34/
2. http://dlang.org/interfaceToC.html

"Mike Parker" <aldacron gmail.com> writes:

On Tuesday, 18 December 2012 at 18:24:03 UTC, Sonia Hamilton 
wrote:

 [1]glib. I'm having problems compiling, what would the correct 
 command
 line options?

 % dmd -I/usr/include/glib-2.0 hello.d -L-L/usr/local/lib 
 -L-lglib-2.0
 hello.d(3): Error: undefined identifier GDateTime
 hello.d(3): Error: undefined identifier GTimeZone

Your problem isn't the command line options, but that you're 
missing definitions of GDateTime and GTimeZone. You'll need to 
define those somewhere, perhaps the top of your file here for 
testing, so that D can know what they are.

 I've got the [2]Interfacing to C page bookmarked :-)

 Thanks for any help, Sonia.

 References

 1. http://developer.gnome.org/glib/2.34/
 2. http://dlang.org/interfaceToC.html

You might want to add this series as well, starting with part 1:
http://www.gamedev.net/blog/1140/entry-2254003-binding-d-to-c/

"Mike Parker" <aldacron gmail.com> writes:

On Tuesday, 18 December 2012 at 19:21:09 UTC, Mike Parker wrote:
 On Tuesday, 18 December 2012 at 18:24:03 UTC, Sonia Hamilton 
 wrote:

 [1]glib. I'm having problems compiling, what would the correct 
 command
 line options?

 % dmd -I/usr/include/glib-2.0 hello.d -L-L/usr/local/lib 
 -L-lglib-2.0
 hello.d(3): Error: undefined identifier GDateTime
 hello.d(3): Error: undefined identifier GTimeZone

 Your problem isn't the command line options, but that you're 
 missing definitions of GDateTime and GTimeZone. You'll need to 
 define those somewhere, perhaps the top of your file here for 
 testing, so that D can know what they are.

I just took a look at the GLib docs and see that both of these 
are opaque structs, so this should do it for you:

struct GDateTime;
struct GTimeZone;

Artur Skawina <art.08.09 gmail.com> writes:

On 12/18/12 20:23, Mike Parker wrote:
 On Tuesday, 18 December 2012 at 19:21:09 UTC, Mike Parker wrote:
 On Tuesday, 18 December 2012 at 18:24:03 UTC, Sonia Hamilton wrote:

 [1]glib. I'm having problems compiling, what would the correct command
 line options?

 % dmd -I/usr/include/glib-2.0 hello.d -L-L/usr/local/lib -L-lglib-2.0
 hello.d(3): Error: undefined identifier GDateTime
 hello.d(3): Error: undefined identifier GTimeZone

 Your problem isn't the command line options, but that you're missing
definitions of GDateTime and GTimeZone. You'll need to define those somewhere,
perhaps the top of your file here for testing, so that D can know what they are.

 
 I just took a look at the GLib docs and see that both of these are opaque
structs, so this should do it for you:
 
 struct GDateTime;
 struct GTimeZone;
 

And if you don't want to do all of that manually, you could use

   http://repo.or.cz/w/girtod.git

which would make a simple glib D hello-world program look like

   import glib = gtk2.glib2;
   import std.stdio, std.conv;

   void main() {
      auto tz = glib.TimeZone.new_local();
      scope (exit) tz.unref();
      auto dt = glib.DateTime.new_now(tz);
      scope (exit) dt.unref();
      writeln("Hello World! It is " ~ to!string(dt.format("%c")));
   }

Compile with

   gdc -fdeprecated -O2 -I $PATH_TO_GIRTOD  glibhello.d
$PATH_TO_GIRTOD/gtk2/glib2.o `pkg-config --libs glib-2.0`
 

This might only work with GDC right now; I have no idea about DMD - never tried
it.
There are other gtk bindings out there (eg gtkd) that may work with that
compiler
and probably support glib too.

artur   

Sonia Hamilton <sonia snowfrog.net> writes:

Thanks for all those replies, they really help :)

Sonia.

On Wed, Dec 19, 2012, at 7:05, Artur Skawina wrote:
 On 12/18/12 20:23, Mike Parker wrote:
 On Tuesday, 18 December 2012 at 19:21:09 UTC, Mike Parker wrote:
 On Tuesday, 18 December 2012 at 18:24:03 UTC, Sonia Hamilton wrote:

 [1]glib. I'm having problems compiling, what would the correct command
 line options?

 % dmd -I/usr/include/glib-2.0 hello.d -L-L/usr/local/lib -L-lglib-2.0
 hello.d(3): Error: undefined identifier GDateTime
 hello.d(3): Error: undefined identifier GTimeZone

 Your problem isn't the command line options, but that you're missing
definitions of GDateTime and GTimeZone. You'll need to define those somewhere,
perhaps the top of your file here for testing, so that D can know what they are.

 
 I just took a look at the GLib docs and see that both of these are opaque
structs, so this should do it for you:
 
 struct GDateTime;
 struct GTimeZone;
 

 
 And if you don't want to do all of that manually, you could use
 
    http://repo.or.cz/w/girtod.git
 
 which would make a simple glib D hello-world program look like
 
    import glib = gtk2.glib2;
    import std.stdio, std.conv;
 
    void main() {
       auto tz = glib.TimeZone.new_local();
       scope (exit) tz.unref();
       auto dt = glib.DateTime.new_now(tz);
       scope (exit) dt.unref();
       writeln("Hello World! It is " ~ to!string(dt.format("%c")));
    }
 
 Compile with
 
    gdc -fdeprecated -O2 -I $PATH_TO_GIRTOD  glibhello.d
    $PATH_TO_GIRTOD/gtk2/glib2.o `pkg-config --libs glib-2.0`
  
 
 This might only work with GDC right now; I have no idea about DMD - never
 tried it.
 There are other gtk bindings out there (eg gtkd) that may work with that
 compiler
 and probably support glib too.
 
 artur