I have a very basic program that does ABSOLUTELY NOTHING. Here is the code:

import gtk.Main;
import gtk.MainWindow;
import gtk.Widget;
void main()   {
}

I am using gdc version 10.3.0 on Ubuntu 20.04. Assuming the file name is test.d, here is my command line:

gdc -I/usr/include/gtkd-3 -L-ldl -L-libgtkd-3 test.d

It generates the following errors:

/usr/bin/ld: /tmp/ccelqCb4.o:(.data.rel+0x10): undefined reference to _D3gtk10MainWindow12__ModuleInfoZ' /usr/bin/ld: /tmp/ccelqCb4.o:(.data.rel+0x18): undefined reference to _D3gtk4Main12__ModuleInfoZ'
/usr/bin/ld: /tmp/ccelqCb4.o:(.data.rel+0x20): undefined reference to `_D3gtk6Widget12__ModuleInfoZ'
collect2: error: ld returned 1 exit status

Why is this, and how can I fix it? Thanks in advance.

On Monday, 23 August 2021 at 20:21:13 UTC, Ruby The Roobster wrote:

import gtk.Main;
import gtk.MainWindow;
import gtk.Widget;
void main()   {
}

I can only guess that module imports trigger module constructor including some code that requires c linkage (Gtk).

On Monday, 23 August 2021 at 20:21:13 UTC, Ruby The Roobster wrote:

You're using command-line arguments as if you are compiling with dmd.

On gcc -L-libgtkd-3 means "add directory ./-libgtkd-3 to the list of directories to be searched for -l".

https://gcc.gnu.org/onlinedocs/gcc-11.2.0/gcc/Directory-Options.html#index-L

Correct invocation:

gdc -I/usr/include/gtkd-3 -ldl -lgtkd-3 test.d

On Tuesday, 24 August 2021 at 08:08:05 UTC, Iain Buclaw wrote:

No matter what I try(including correct invocation), it won't work with gdc.

Doing this, works though:

dub add gtkd-3@3.9.0
then
dub fetch gtkd-3@3.9.0
then dub test.d

Will cause the program to run and execute. However, it doesn't save an executable to disk, which is what I want. Is there a way, to get it saved to disk?

On Tuesday, 24 August 2021 at 19:07:11 UTC, Ruby The Roobster wrote:

There's nothing special you have to do. You should always see an executable after invoking dub for a run or build. But you've got some mixed-up commands here.

1. dub add requires a dub.json/sdl. I assume you have one, else the invocation would fail. But if you do, you aren't using it because of your invocation of dub test.d (see point 3 below).
2. dub fetch is not needed after dub add. If a dependency is added to your config file, dub will fetch it automatically.
3. dub test.d is for building a single file. To do that, you have to add your dub config in a comment at the top of the source file rather than as a separate dub.json/sdl. If you try to invoke dub with a source file name and there is no config at the top of the file, then the invocation will fail. And if you do have this, then your invocation of dub add isn't doing anything for you---it won't add dependencies to single-file configs.

If the first and last invocations really are succeeding, then it looks like you've got both a dub.json/sdl and a single-file config. And in that case, your dub.json/sdl isn't doing anything and dub is using the config at the top of test.d. And you should see an executable next to test.d after it completes.

So this is all rather confusing looking only at these command lines. How exactly have you configured this? What does test.d look like?

On Tuesday, 24 August 2021 at 22:21:44 UTC, Mike Parker wrote:

I changed test.d to be the same code as in the HelloWorld.d(https://github.com/gtkd-developers/GtkD/blob/master/demos/gtk/HelloWorld.d)example that is provided by the GtkD github. Adding the comment to the top of the file and removing the .json doesn't change what happens. Dub runs the program, but an executable file doesn't pop up next to it. Running ./test in the terminal returns a no file or directory error. Another thing. Apparently dub run is the default command, but running dub run test.d gives an error that the package test could not be found. Same with dub build. Running dub test.d still works just fine, for some reason.

On Tuesday, 24 August 2021 at 23:30:22 UTC, Ruby The Roobster wrote:

In other words, given:

- projectDir
-- dub.sdl
-- source
--- app.d

Then you can:

cd projectDir
dub

This will build and run the application with the default configuration. This is documented here:

https://dub.pm/getting_started.html

When you instead do dub test.d, dub looks for the configuration in a comment at the top of the source file. It then will build and run that file and any dependencies listed in the configuration. That's documented here:

https://dub.pm/advanced_usage

But either way, if the app successfully compiles and executes, you should be seeing an executable. If you could paste the source of test.d here and specify which platform you're on, then maybe I or someone else can take a look.

On Wednesday, 25 August 2021 at 01:40:39 UTC, Mike Parker wrote:

So the formatting got borked and my first paragraph ended up with the quoted text. In case it isn't clear:

On Wednesday, 25 August 2021 at 01:41:53 UTC, Mike Parker wrote:

Thank you. Now I see the executable pop up. I was using dub wrong, having never used it before. Again, thanks for all the help.