PointCloudLibrary / PointCloudLibrary/pcl
[LNK2019] "Pcl with surface on nurbs getting unresolved external"
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- C++
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Description
Describe the error
I am attempting to use the third-party library OpenNURBS from PCL while the surface-on-NURBS module is enabled,
but I am experiencing some unresolved external errors.
I am using PCL from VCPKG, which has been compiled for the x86-windows triplet."
pcl 1.13.0#3
I am able to link successfully with pcl_surface and use classes from pcl\surface\on_nurbs, but I am got unresolved external errors when attempting to use classes from pcl\surface\3rdparty\opennurbs.
error LNK2019: unresolved external symbol "int __cdecl ON_KnotCount(int,int)" (?ON_KnotCount@@YAHHH@Z) referenced in function _main
Here a small and simple project to test the issue:
CMakeLists.txt
pcl_test .txt
command line used to generate makefile considering my local paths for vcpkg pcl.
cmake -G "NMake Makefiles" ..\CMakeLists.txt -DCMAKE_BUILD_TYPE=Debug -DPCL_INCLUDE_DIRS="./pcl/x86-windows/include" -DPCL_LIBRARIES="../pcl/x86-windows/debug/lib/pcl_surfaced.lib"
Despite linking all PCL libraries, I am still unable to determine the root cause of the issue.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by running the provided CMakeLists.txt and pcl_test project with the reported vcpkg x86-windows triplet and pcl 1.13.0. Inspect how pcl_surface, pcl\surface\on_nurbs, and pcl\surface\3rdparty\opennurbs are linked, focusing on the missing ON_KnotCount symbol. Done means the sample links successfully and uses the NURBS classes without LNK2019 errors.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cmake, cpp
- Domain
- build-system, computer-vision
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100