Undefined symbols for architecture x86_64: "Nabo::NearestNeighbourSearch<double, Eigen::Matrix<doubl...

[drhalftone]

I'm running the following:

Mac OS X version 12.6.6
gcc version Apple clang version 14.0.0 (clang-1400.0.29.202)
Homebrew 4.0.20
boost: stable 1.81.0 (bottled), HEAD
git version 2.40.1
cmake version 3.26.4
eigen: stable 3.4.0 (bottled), HEAD

Followed directions for Mac OS X and got down to this when making libpointmatcher:

[ 92%] Linking CXX executable icp_simple
Undefined symbols for architecture x86_64:
"Nabo::NearestNeighbourSearch<double, Eigen::Matrix<double, -1, -1, 0, -1, -1> >::create(Eigen::Matrix<double, -1, -1, 0, -1, -1> const&, int, Nabo::NearestNeighbourSearch<double, Eigen::Matrix<double, -1, -1, 0, -1, -1> >::SearchType, unsigned int, Nabo::Parameters const&)", referenced from:
MatchersImpl::KDTreeMatcher::init(PointMatcher::DataPoints const&) in libpointmatcher.a(MatchersImpl.cpp.o)
MatchersImpl::KDTreeVarDistMatcher::init(PointMatcher::DataPoints const&) in libpointmatcher.a(MatchersImpl.cpp.o)
TensorVoting::computeKnn(PointMatcher::DataPoints const&) in libpointmatcher.a(Saliency.cpp.o)
TensorVoting::computeKnn(PointMatcher::DataPoints const&) in libpointmatcher.a(SpectralDecomposition.cpp.o)
"Nabo::NearestNeighbourSearch<float, Eigen::Matrix<float, -1, -1, 0, -1, -1> >::create(Eigen::Matrix<float, -1, -1, 0, -1, -1> const&, int, Nabo::NearestNeighbourSearch<float, Eigen::Matrix<float, -1, -1, 0, -1, -1> >::SearchType, unsigned int, Nabo::Parameters const&)", referenced from:
MatchersImpl::KDTreeMatcher::init(PointMatcher::DataPoints const&) in libpointmatcher.a(MatchersImpl.cpp.o)
MatchersImpl::KDTreeVarDistMatcher::init(PointMatcher::DataPoints const&) in libpointmatcher.a(MatchersImpl.cpp.o)
TensorVoting::computeKnn(PointMatcher::DataPoints const&) in libpointmatcher.a(Saliency.cpp.o)
TensorVoting::computeKnn(PointMatcher::DataPoints const&) in libpointmatcher.a(SpectralDecomposition.cpp.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

[pomerlef]

It seems related to libnabo not being found. Any idea what changed in your build procedure?

[drhalftone]

Worked totally fine on my Mac Book Pro running 13.4 but not on my old trashcan Mac. Is it possible it sees an old copy of libnabo from a previous libpointmatcher build from a few years ago? On Jun 6, 2023, at 8:17 PM, François Pomerleau ***@***.***> wrote: It seems related to libnabo not being found. Any idea what changed in your build procedure? — Reply to this email directly, view it on GitHub <#514 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACRPLIWWBQVOD6G2LLT4ZD3XJ7CBBANCNFSM6AAAAAAYXEYXXE>. You are receiving this because you authored the thread.

[Brac24]

I'm having a similar issue. I'm building a docker image for ARM. But I ran this same thing about a month ago with no issues. Now it looks like it has issues compiling the examples.

At the start of the compilation it says libnabo found. Is there an environment variable or CMake flag that needs to be set?

[Brac24]

Sure enough it did build if I don't build the examples using the cmake flag -DPOINTMATCHER_BUILD_EXAMPLES=OFF
So there's something specific with the examples that it can't find libnabo maybe?

[pomerlef]

@drhalftone can you check if the proposed PR #513 resolve your issue?

[Brac24]

That seems to have worked for me hopefully it works for @drhalftone

[pomerlef]

Should be resolved with #513