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Problem with linking boost in plugin (LNK1104)

Hi,

I´m including the pcl library (and therefore also boost and eigen) in a plugin, using the Tutorial from Valentin Kraft. Actually I did use his code from github and had no problems compiling it.

Then I wanted to use a PCDWriter in a method - since then I got a linking error:

LNK1104 cannot open file 'libboost_thread-vc141-mt-1_64.lib'

But in my project, everything is there: alt text

I also tried deleting the Binary and Intermediate folder and refreshing the VS project as this is sometimes mentioned als solution for linking problems.

Any Ideas what I can try?

Product Version: UE 4.19
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asked Sep 25 '18 at 10:56 AM in C++ Programming

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DaKenpachi
79 4 6 10

avatar image DaKenpachi Sep 27 '18 at 12:16 PM

Ok I found out some things:

1) The Path to the lib file was not there. Somehow the line PublicAdditionalLibraries.Add(Path.Combine(ModulePath, "Boost/lib/libboost_thread-vc141-mt-1_64.lib")); in the PCL.build.cs did not do the job. If I add the path to the lib files manually in the VS project settings, the error goes away (and is replaced by some other, internal error meaning I actually cant use the lib file).

2) The need of having the libboost_thread-vc141-mt-1_64.lib is also defined somewhere else, and I cant find where. Because when I want to include another version of the lib ( libboost_thread-vc140-mt-1_64.lib comming with the current download of PCL 1.8.1) and change the line to PublicAdditionalLibraries.Add(Path.Combine(ModulePath, "Boost/lib/libboost_thread-vc140-mt-1_64.lib")); it still has the error "cant open libboost_thread-vc14 1 -mt-1_64.lib"

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