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UnrealBuildTool: LINK : fatal error LNK1181: cannot open input file 'libfbxsdk-md.lib'

I'm trying to package my game in UE4.17 after upgrading from 4.15 but am getting an error finding libfxdsk-md.lib.

I can find libfbxdsk.lib but there is no -md variant. I upgraded VS2017 to the latest update last night and verified that I have the latest windows 10 SDK installed. Still no luck. At one point awhile ago I had packaged with 4.15, but I am not sure if it was still able to be packaged when I did the upgrade.

Product Version: UE 4.17
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asked Aug 26 '17 at 01:15 PM in Packaging & Deployment

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Sessional
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avatar image RVillani Aug 31 '17 at 10:50 PM

I tried renaming libfbxsdk.lib to libfbxsdk-md.lib. Now the error is

 LINK : fatal error LNK1181: cannot open input file 'C:\Program Files\Epic Games\UE_4.17\Engine\Binaries\Win64\UE4-UnrealEd.lib'

I'm gonna try an Engine verification and report back here.

Edit: no deal. It's still asking for C:\Program Files\Epic Games\UE_4.17\Engine\Binaries\Win64\UE4-UnrealEd.lib

Edit 2: I reproduced the same problem in another project. Both converted from 4.16.3. Clean projects (either BP or Code) build fine in Development and Shipping modes.

avatar image RVillani Sep 01 '17 at 01:47 AM

Do you have some plugin using the new IWYU pattern? I'm starting to think that's the culprit. Because the modules I used are used by other engine plugins or even the Substance plugin, but I found none using IWYU.

Edit: I converted one of my other plugins that used the IWYU pattern to 4.17 and it packaged ok. I'm starting to think the problems have to do with using the UnrealEd module in a IWYU plugin in 4.17.

Edit 2: yup. Usage of the UnrealEd module in the plugin's Build.cs file seems to be broken if its module is set to be of any type other than Editor. I just added it to my PublicDependencyModules on a previously packageable plugin (didn't even include any header from it in code) and the plugin compiled but I wasn't able to package the game, getting the the same error as OP.

avatar image Sessional Sep 01 '17 at 01:48 PM

@RVillani It appears that my problem was in the .uproject I had accrued some references to things that I didn't need (no clue where/when they showed up). I removed them one by one until it went away. The culprit appears to have been the UMGEditor line in my .uproject?

avatar image RVillani Sep 07 '17 at 12:25 AM

@Sessional Yeah, probably. Editor related modules seem to be the problem.

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1 answer: sort voted first

This helped me:

https://forums.unrealengine.com/development-discussion/c-gameplay-programming/28514-unrealed-dependency-causes-package-failure

Basically in the Game.Build.cs file you need to conditionally add the UnrealEd dependency depending whether you're building with editor or not.

 if (UEBuildConfiguration.bBuildEditor)
 {
     PublicDependencyModuleNames.AddRange(
         new string[] {
             "UnrealEd",
         }
     );
 }
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answered Feb 13 '18 at 05:33 PM

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jonimake
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