问题
I am using the armadillo library inside a package (LAMMPS package). I also used Armadillo to compile different codes, and it works fines, and I use the following compiling command:
g++ example2.cpp -o example2 -O3 -larmadillo -DARMA_DONT_USE_WRAPPER -lblas -llapack
Armadillo works fine for matrix storage and loading inside the package, however, when it comes to matrix-vector multiplication, it gives me the following error:
/usr/include/armadillo_bits/wrapper_blas.hpp:42: undefined reference to `dgemv_'
Any suggestion on how to go around it?
来源：https://stackoverflow.com/questions/61999416/armadillo-blas-lapack