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How do I add thirdparty library?

Hello there,

I want to add a Third Party Library to my project but I dont realy know HOW! ...

Ive found Static Libraries Using The Build System , but I dont know what I must do know.

The thirdparty library, which I want to add is MySQL.

According to the MySQL Document I need to add the library to the Linker in Visual Studio, but there is no Linker. In the german unrealengine4 forum someone wrote to me that Unreal Engine 4 dont use this settings from Visual Studio and I need to add the library manually.

Can someone help me out here?

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asked Apr 27 '15 at 04:02 PM in C++ Programming

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Xearox
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2 answers: sort voted first

Have a look at this other answer to the same question.

https://answers.unrealengine.com/questions/197667/how-do-you-statically-link-an-external-dlldylib-to.html

That wiki help page is very unhelpful.

The tldr; is, in your Project.Build.cs, you need to add:

 PublicIncludePaths.Add('AbsolutePath/to/include/files');
 PublicAdditionalLibraries.Add('AbsolutePath/to/mylib.dll');

You can use the various C# methods (eg.

 var base_path = Path.GetFullPath(Path.Combine(Path.GetDirectoryName(RulesCompiler.GetModuleFilename(this.GetType().Name)), "../../mysql"));
 var includes = Path.Combine(base_path, "include");

To generate the required absolute paths.

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answered May 10 '15 at 02:49 AM

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shadowmint
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avatar image goofyseeker311 Jun 27 '16 at 08:11 PM

Somehow in the newest UE4 Target.cs files, there is no reference to those Public* variables in the TargetRules context.. Those are available in ModuleRules structure but how and where?

avatar image Slabilo Aug 17 '16 at 10:48 AM
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The article (Static Libraries Using The Build System) shows exactly how to add you third-party *.lib in a UE4 project and corresponding include directories through the C# project build (no need to include them in VS project settings). You can link to your mysqlclient.lib and include directories from there. Have you tried it ?

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answered May 09 '15 at 09:37 PM

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DrHobo
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avatar image shadowmint May 10 '15 at 02:52 AM

To be fair, that is the most useless wiki page on the site. It tells you almost absolutely nothing about how the linking works, doesn't have a complete example, and links to the a UE4 plugin (ie. V8) that uses a different method to link it's libraries.

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