Stubborn Linker Error? (linear_solver.cc)

[ankitm]

You may want to ask @isolin who had solved the same error

Blender 2.90 Local build fails

Updates: I managed to install both gcc-8 and gcc-9 (on Ubuntu 18.04). The key was to install gcc-9 first and gcc-8 after that. CUDA requires gcc-8 and fails with a different version, but Blender now requires a different version. The build went better, but it still fails. Now with a different error! [100%] Built target cycles ../../lib/libbf_intern_eigen.a(linear_solver.cc.o):linear_solver.cc:function Eigen::internal::sparse_time_dense_product_impl<Eigen::Transpose<Eigen::SparseMatrix<do…