Locate the library libmkl_lapack.a then use --with-blas-lapack- dir=/the path to the libmkl_lapack.a Good luck, Barry On Feb 3, 2008, at 4:29 PM, Gideon Simpson wrote: > If I wished to use the intel MKL instead of Apple's vecLib framework > for my BLAS/LAPACK, what would be the appropriate flags to give > petsc when it's configuring? > > -gideon >