Likely build-system issue inside the repository

Hi Author

Ubuntu-like environment
GCC 11.4
Python 3.8
Conda environment
Eigen 5 attempted
Eigen 3 attempted
SuiteSparse installed
CHOLMOD installed
BLAS/LAPACK installed

CMake succeeds.

make reaches:

[100%] Linking CXX shared module

Failure:

/usr/bin/ld: cannot find -lsolver_cholmod

make solver_cholmod:
No rule to make target 'solver_cholmod'