Armadillo + BLAS + LAPACK: Linking error?

Question

When I try to compile example1.cpp that comes with Armadillo 2.4.2, I keep getting the following linking error:

/tmp/ccbnLbA0.o: In function `double arma::bl         


        

Answer 1

As of 5.0.0 (might also apply to earlier versions)

You actually need -larmadillo, on Fedora 21 -llapack and -lopenblas are not excplicitly necessary anymore.