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Resolve dub dependency
Sep 21, 2020
JN
Sep 21, 2020
Paul Backus
Sep 21, 2020
JN
September 21, 2020
Gravatar of JNPosted by JNReply
JN
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I am trying to use bindbc-sdl and bindbc-wgpu at the same time. The error is:

Unresolvable dependencies to package bindbc-loader:
  bindbc-sdl 0.19.1 depends on bindbc-loader ~>0.3.0
  bindbc-sdl 0.19.1 depends on bindbc-loader ~>0.3.0
  bindbc-wgpu 0.1.0-alpha8 depends on bindbc-loader ~>0.2.1

What is the cleanest way to resolve this? I don't understand why can't -sdl and -wgpu use different versions of the loader library.
September 21, 2020
Gravatar of Paul BackusPosted by Paul Backus
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Paul Backus
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On Monday, 21 September 2020 at 19:16:17 UTC, JN wrote:
> I am trying to use bindbc-sdl and bindbc-wgpu at the same time. The error is:
>
> Unresolvable dependencies to package bindbc-loader:
>   bindbc-sdl 0.19.1 depends on bindbc-loader ~>0.3.0
>   bindbc-sdl 0.19.1 depends on bindbc-loader ~>0.3.0
>   bindbc-wgpu 0.1.0-alpha8 depends on bindbc-loader ~>0.2.1
>
> What is the cleanest way to resolve this? I don't understand why can't -sdl and -wgpu use different versions of the loader library.

You can't use different versions of a library in the same library in the same program because library version isn't included in name mangling, so you'll get link errors for having multiple definitions of the same symbol.
September 21, 2020
Gravatar of JNPosted by JN
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JN
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On Monday, 21 September 2020 at 19:38:12 UTC, Paul Backus wrote:
> On Monday, 21 September 2020 at 19:16:17 UTC, JN wrote:
>> I am trying to use bindbc-sdl and bindbc-wgpu at the same time. The error is:
>>
>> Unresolvable dependencies to package bindbc-loader:
>>   bindbc-sdl 0.19.1 depends on bindbc-loader ~>0.3.0
>>   bindbc-sdl 0.19.1 depends on bindbc-loader ~>0.3.0
>>   bindbc-wgpu 0.1.0-alpha8 depends on bindbc-loader ~>0.2.1
>>
>> What is the cleanest way to resolve this? I don't understand why can't -sdl and -wgpu use different versions of the loader library.
>
> You can't use different versions of a library in the same library in the same program because library version isn't included in name mangling, so you'll get link errors for having multiple definitions of the same symbol.

Ahh ok, that makes sense. I patched bindbc-wgpu locally to use loader ~>0.3.0 and it's working now.