Questions about Using OpenMesh in Mac OS X
Hi, I’m a beginner in OpenMesh so this question may seem to be funny. I’ve successfully installed OpenMesh using homebrew. But when I tried to run a simple testing program in CLion, things went wrong. Messages are like this: /Applications/CLion.app/Contents/bin/cmake/bin/cmake --build /Users/felix/Desktop/Learning/FillHole/FillHole/cmake-build-debug --target FillHole -- -j 4 Scanning dependencies of target FillHole [ 50%] Building CXX object CMakeFiles/FillHole.dir/main.cpp.o [100%] Linking CXX executable FillHole Undefined symbols for architecture x86_64: "OpenMesh::PolyConnectivity::add_face(std::vector<OpenMesh::VertexHandle, std::allocator<OpenMesh::VertexHandle> > const&)", referenced from: _main in main.cpp.o "OpenMesh::IO::_IOManager_::write(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, OpenMesh::IO::BaseExporter&, OpenMesh::IO::Options, long)", referenced from: bool OpenMesh::IO::write_mesh<OpenMesh::PolyMesh_ArrayKernelT<OpenMesh::DefaultTraits> >(OpenMesh::PolyMesh_ArrayKernelT<OpenMesh::DefaultTraits> const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, OpenMesh::IO::Options, long) in main.cpp.o "OpenMesh::BaseProperty::stats(std::basic_ostream<char, std::char_traits<char> >&) const", referenced from: vtable for OpenMesh::PropertyT<OpenMesh::DefaultTraits::EdgeT<OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::ITraits, OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::Refs> > in main.cpp.o vtable for OpenMesh::PropertyT<OpenMesh::DefaultTraits::HalfedgeT<OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::ITraits, OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::Refs> > in main.cpp.o vtable for OpenMesh::PropertyT<OpenMesh::DefaultTraits::FaceT<OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::ITraits, OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::Refs> > in main.cpp.o vtable for OpenMesh::PropertyT<OpenMesh::DefaultTraits::VertexT<OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::ITraits, OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::Refs> > in main.cpp.o vtable for OpenMesh::PropertyT<OpenMesh::VectorT<float, 3> > in main.cpp.o ld: symbol(s) not found for architecture x86_64 collect2: error: ld returned 1 exit status make[3]: *** [FillHole] Error 1 make[2]: *** [CMakeFiles/FillHole.dir/all] Error 2 make[1]: *** [CMakeFiles/FillHole.dir/rule] Error 2 make: *** [FillHole] Error 2 I think I’ve written my CMakeLists.txt correctly, so how can this happen? Here is my CMakeLists.txt: cmake_minimum_required(VERSION 3.9) project(FillHole) set(CMAKE_CXX_STANDARD 11) set(OpenMesh_FILE /usr/local/Cellar/open-mesh/7.1) INCLUDE_DIRECTORIES(${OpenMesh_FILE}/include) link_directories(${OpenMesh_FILE}/lib) add_executable(FillHole main.cpp) target_link_libraries(FillHole libOpenMeshCore.7.1.dylib libOpenMeshTools.7.1.dylib) And here is my program: #include <iostream> // -------------------- OpenMesh #include<unistd.h> #include <OpenMesh/Core/IO/MeshIO.hh> #include <OpenMesh/Core/Mesh/PolyMesh_ArrayKernelT.hh> // ---------------------------------------------------------------------------- typedef OpenMesh::PolyMesh_ArrayKernelT<> MyMesh; // ---------------------------------------------------------------------------- // Build a simple cube and write it to std::cout int main() { MyMesh mesh; // generate vertices MyMesh::VertexHandle vhandle[8]; vhandle[0] = mesh.add_vertex(MyMesh::Point(-1, -1, 1)); vhandle[1] = mesh.add_vertex(MyMesh::Point( 1, -1, 1)); vhandle[2] = mesh.add_vertex(MyMesh::Point( 1, 1, 1)); vhandle[3] = mesh.add_vertex(MyMesh::Point(-1, 1, 1)); vhandle[4] = mesh.add_vertex(MyMesh::Point(-1, -1, -1)); vhandle[5] = mesh.add_vertex(MyMesh::Point( 1, -1, -1)); vhandle[6] = mesh.add_vertex(MyMesh::Point( 1, 1, -1)); vhandle[7] = mesh.add_vertex(MyMesh::Point(-1, 1, -1)); // generate (quadrilateral) faces std::vector<MyMesh::VertexHandle> face_vhandles; face_vhandles.clear(); face_vhandles.push_back(vhandle[0]); face_vhandles.push_back(vhandle[1]); face_vhandles.push_back(vhandle[2]); face_vhandles.push_back(vhandle[3]); mesh.add_face(face_vhandles); face_vhandles.clear(); face_vhandles.push_back(vhandle[7]); face_vhandles.push_back(vhandle[6]); face_vhandles.push_back(vhandle[5]); face_vhandles.push_back(vhandle[4]); mesh.add_face(face_vhandles); face_vhandles.clear(); face_vhandles.push_back(vhandle[1]); face_vhandles.push_back(vhandle[0]); face_vhandles.push_back(vhandle[4]); face_vhandles.push_back(vhandle[5]); mesh.add_face(face_vhandles); face_vhandles.clear(); face_vhandles.push_back(vhandle[2]); face_vhandles.push_back(vhandle[1]); face_vhandles.push_back(vhandle[5]); face_vhandles.push_back(vhandle[6]); mesh.add_face(face_vhandles); face_vhandles.clear(); face_vhandles.push_back(vhandle[3]); face_vhandles.push_back(vhandle[2]); face_vhandles.push_back(vhandle[6]); face_vhandles.push_back(vhandle[7]); mesh.add_face(face_vhandles); face_vhandles.clear(); face_vhandles.push_back(vhandle[0]); face_vhandles.push_back(vhandle[3]); face_vhandles.push_back(vhandle[7]); face_vhandles.push_back(vhandle[4]); mesh.add_face(face_vhandles); OpenMesh::IO::write_mesh(mesh, "output.off"); // write mesh to output.obj try { if ( !OpenMesh::IO::write_mesh(mesh, "output.off") ) { std::cerr << "Cannot write mesh to file 'output.off'" << std::endl; return 1; } } catch( std::exception& x ) { std::cerr << x.what() << std::endl; return 1; } std::cout << "nice"<<std::endl; return 0; } Can you help me find where the problem is? Thank you very much!
Hi, You are building in debug mode but your cmake config tells it to ling against the release version of OpenMesh. Can you try addind a "d" before the .dylib in your cmake file? Regards, Jan Möbius On 22.05.19 18:03, 梓欣 张 wrote:
Hi, I’m a beginner in OpenMesh so this question may seem to be funny. I’ve successfully installed OpenMesh using homebrew. But when I tried to run a simple testing program in CLion, things went wrong. Messages are like this:
const&)", referenced from: _main in main.cpp.o "OpenMesh::IO::_IOManager_::write(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, OpenMesh::IO::BaseExporter&, OpenMesh::IO::Options, long)", referenced from: bool OpenMesh::IO::write_mesh<OpenMesh::PolyMesh_ArrayKernelT<OpenMesh::DefaultTraits> (OpenMesh::PolyMesh_ArrayKernelT<OpenMesh::DefaultTraits> const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, OpenMesh::IO::Options, long) in main.cpp.o "OpenMesh::BaseProperty::stats(std::basic_ostream<char, std::char_traits<char> >&) const", referenced from: vtable for OpenMesh::PropertyT<OpenMesh::DefaultTraits::EdgeT<OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::ITraits, OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::Refs> > in main.cpp.o vtable for OpenMesh::PropertyT<OpenMesh::DefaultTraits::HalfedgeT<OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::ITraits, OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::Refs> > in main.cpp.o vtable for OpenMesh::PropertyT<OpenMesh::DefaultTraits::FaceT<OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::ITraits, OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::Refs> > in main.cpp.o vtable for OpenMesh::PropertyT<OpenMesh::DefaultTraits::VertexT<OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::ITraits, OpenMesh::FinalMeshItemsT<OpenMesh::DefaultTraits, false>::Refs> > in main.cpp.o vtable for OpenMesh::PropertyT<OpenMesh::VectorT<float, 3> > in
/Applications/CLion.app/Contents/bin/cmake/bin/cmake --build /Users/felix/Desktop/Learning/FillHole/FillHole/cmake-build-debug --target FillHole -- -j 4 Scanning dependencies of target FillHole [ 50%] Building CXX object CMakeFiles/FillHole.dir/main.cpp.o [100%] Linking CXX executable FillHole Undefined symbols for architecture x86_64: "OpenMesh::PolyConnectivity::add_face(std::vector<OpenMesh::VertexHandle, std::allocator<OpenMesh::VertexHandle> main.cpp.o ld: symbol(s) not found for architecture x86_64 collect2: error: ld returned 1 exit status make[3]: *** [FillHole] Error 1 make[2]: *** [CMakeFiles/FillHole.dir/all] Error 2 make[1]: *** [CMakeFiles/FillHole.dir/rule] Error 2 make: *** [FillHole] Error 2
I think I’ve written my CMakeLists.txt correctly, so how can this happen? Here is my CMakeLists.txt:
cmake_minimum_required(VERSION 3.9) project(FillHole)
set(CMAKE_CXX_STANDARD 11)
set(OpenMesh_FILE /usr/local/Cellar/open-mesh/7.1) INCLUDE_DIRECTORIES(${OpenMesh_FILE}/include) link_directories(${OpenMesh_FILE}/lib)
add_executable(FillHole main.cpp)
target_link_libraries(FillHole libOpenMeshCore.7.1.dylib libOpenMeshTools.7.1.dylib)
And here is my program:
#include <iostream> // -------------------- OpenMesh #include<unistd.h> #include <OpenMesh/Core/IO/MeshIO.hh> #include <OpenMesh/Core/Mesh/PolyMesh_ArrayKernelT.hh> // ---------------------------------------------------------------------------- typedef OpenMesh::PolyMesh_ArrayKernelT<> MyMesh; // ---------------------------------------------------------------------------- // Build a simple cube and write it to std::cout
int main() { MyMesh mesh; // generate vertices MyMesh::VertexHandle vhandle[8]; vhandle[0] = mesh.add_vertex(MyMesh::Point(-1, -1, 1)); vhandle[1] = mesh.add_vertex(MyMesh::Point( 1, -1, 1)); vhandle[2] = mesh.add_vertex(MyMesh::Point( 1, 1, 1)); vhandle[3] = mesh.add_vertex(MyMesh::Point(-1, 1, 1)); vhandle[4] = mesh.add_vertex(MyMesh::Point(-1, -1, -1)); vhandle[5] = mesh.add_vertex(MyMesh::Point( 1, -1, -1)); vhandle[6] = mesh.add_vertex(MyMesh::Point( 1, 1, -1)); vhandle[7] = mesh.add_vertex(MyMesh::Point(-1, 1, -1)); // generate (quadrilateral) faces std::vector<MyMesh::VertexHandle> face_vhandles; face_vhandles.clear(); face_vhandles.push_back(vhandle[0]); face_vhandles.push_back(vhandle[1]); face_vhandles.push_back(vhandle[2]); face_vhandles.push_back(vhandle[3]); mesh.add_face(face_vhandles);
face_vhandles.clear(); face_vhandles.push_back(vhandle[7]); face_vhandles.push_back(vhandle[6]); face_vhandles.push_back(vhandle[5]); face_vhandles.push_back(vhandle[4]); mesh.add_face(face_vhandles); face_vhandles.clear(); face_vhandles.push_back(vhandle[1]); face_vhandles.push_back(vhandle[0]); face_vhandles.push_back(vhandle[4]); face_vhandles.push_back(vhandle[5]); mesh.add_face(face_vhandles); face_vhandles.clear(); face_vhandles.push_back(vhandle[2]); face_vhandles.push_back(vhandle[1]); face_vhandles.push_back(vhandle[5]); face_vhandles.push_back(vhandle[6]); mesh.add_face(face_vhandles); face_vhandles.clear(); face_vhandles.push_back(vhandle[3]); face_vhandles.push_back(vhandle[2]); face_vhandles.push_back(vhandle[6]); face_vhandles.push_back(vhandle[7]); mesh.add_face(face_vhandles); face_vhandles.clear(); face_vhandles.push_back(vhandle[0]); face_vhandles.push_back(vhandle[3]); face_vhandles.push_back(vhandle[7]); face_vhandles.push_back(vhandle[4]); mesh.add_face(face_vhandles); OpenMesh::IO::write_mesh(mesh, "output.off"); // write mesh to output.obj try { if ( !OpenMesh::IO::write_mesh(mesh, "output.off") ) { std::cerr << "Cannot write mesh to file 'output.off'" << std::endl; return 1; } } catch( std::exception& x ) { std::cerr << x.what() << std::endl; return 1; } std::cout << "nice"<<std::endl; return 0; }
Can you help me find where the problem is? Thank you very much!
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-- Jan Möbius Department of Computer Science VIII Aachen University of Technology (RWTH) Ahornstrasse 55, 52074 Aachen, Germany Phone ++49 (0)241 80-21802 Fax ++49 (0)241 80-22899 mailto:moebius@cs.rwth-aachen.de http://www.rwth-graphics.de
participants (2)
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Jan Möbius -
梓欣 张