OpenMP issues pertaining to pose graph library

[sushrutsurve]

Hi ! I am trying to build the SVIn but the build fails specifically when it tries to link this CXX executable [ 90%] Linking CXX executable /data/svin_ws/devel/lib/pose_graph/pose_graph

I think the issue is the following /usr/local/lib/libceres.a(evaluator.cc.o): In function.omp_outlined.': evaluator.cc:(.text+0x177): undefined reference to __kmpc_global_thread_num' evaluator.cc:(.text+0x1d9): undefined reference tokmpc_for_static_init_4' evaluator.cc:(.text+0x214): undefined reference to `kmpc_flush' evaluator.cc:(.text+0x22e): undefined reference to __kmpc_flush' evaluator.cc:(.text+0x26a): undefined reference tokmpc_flush' evaluator.cc:(.text+0x971): undefined reference to __kmpc_for_static_fini' /usr/local/lib/libceres.a(evaluator.cc.o): In function.omp_outlined..12': evaluator.cc:(.text+0x9f4): undefined reference to __kmpc_global_thread_num' evaluator.cc:(.text+0xa57): undefined reference tokmpc_for_static_init_4' evaluator.cc:(.text+0xa92): undefined reference to __kmpc_flush' evaluator.cc:(.text+0xaac): undefined reference tokmpc_flush' evaluator.cc:(.text+0xae8): undefined reference to __kmpc_flush' evaluator.cc:(.text+0xf01): undefined reference tokmpc_for_static_fini' /usr/local/lib/libceres.a(evaluator.cc.o): In function .omp_outlined..13': evaluator.cc:(.text+0xf72): undefined reference tokmpc_global_thread_num' evaluator.cc:(.text+0xfd4): undefined reference to __kmpc_for_static_init_4' evaluator.cc:(.text+0x101d): undefined reference to__kmpc_flush' evaluator.cc:(.text+0x103a): undefined reference to `kmpc_flush' evaluator.cc:(.text+0x107b): undefined reference to __kmpc_flush' evaluator.cc:(.text+0x14c1): undefined reference to__kmpc_for_static_fini'`

I am using Ubuntu 18.04.5 LTS with ROS melodic.

Any suggestions on how to solve this issue would be really helpful. Thanks !

[sushrutsurve]

Just reinstalled OpenMP libraries using sudo apt-get install libomp5 sudo apt-get install libomp-dev