Beginner DUB user question...

[Mike Parker via Digitalmars-d-learn]

On Sunday, 9 October 2016 at 01:24:57 UTC, WhatMeWorry wrote:
>
> I've got a little hello_window DUB project which uses these 
> dependencies:
>
> dependency "derelict-util"  version="~>2.0.6"
> dependency "derelict-glfw3" version="~>3.1.0"	
> dependency "derelict-gl3"   version="~>1.0.19"	
> dependency "derelict-fi"    version="~>2.0.3"
> dependency "derelict-ft"    version="~>1.1.2"
> dependency "derelict-al"    version="~>1.0.1"
>
>
> dub run --verbose --arch=x86_64 --force
>
> successfully compiles and links hello_window.exe
>
> Going forward, I want to reuse common code, so I created a 
> sub-directory called appropiately enough: common.
>
> And to quote M. Parker's Learning D, "...for imported modules 
> to be compiled and linked, they should be passed to the 
> compiler as well."
>
> So how do I get dub to call dmd with this pattern?
>
> dmd hellow_window.d common/load_libraries.d
>

Subpackages are useful if you have mutiple projects in the same 
git repository. Otherwise,  there are several ways to go about 
this, depending on what your intentions and what your directory 
structure looks like. Is the common subdirectory part of the same 
project? Is it  an independent project you want to share between 
multiple projects? Are you planning on distributing the code 
(e.g. on github) or is it only for your local build system?

If common is an independent project with its own dub 
configuration, then you might use `dub add-local` to make it 
available to all of your other projects or, if you don't plan to 
distribute it, use a `path` instead of `version` for any projects 
that depend on it (in project A's dub.sdl: dependency "libcommon" 
path="../path/to/common").

If common is not an independent project (it has no dub 
configuration) then you can use `sourcePaths` (or `sourceFiles`) 
in the dub configuration of any projects that need it. Or you 
could copy it around into the source directory of any project 
that uses it and dub will compile it automatically:

- projectA
-- dub.sdl
--- source
----projecta
----common