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Ideally, a highly optimized version of the BLAS library already
exists on your machine.
In this case you can go directly to Section 6.3 to
make the BLAS test programs.
You may already have a library containing some of the BLAS,
but not all (Level 1 and 2, but not Level 3, for example).
If so, you should use your local version of the BLAS wherever
possible.

- a)
- Go to
`LAPACK` and edit the definition of `blaslib` in the
file `Makefile` to specify the data types desired, as in the example
in Section 5.3.
If you already have some of the BLAS, you will need to edit the file
`LAPACK/BLAS/SRC/Makefile` to comment out the lines
defining the BLAS you have.

- b)
- Type
`make blaslib`.
The make command can be run more than once to add another
data type to the library if necessary.

The BLAS library is created in `LAPACK/blas_PLAT.a`, where `PLAT` is the user-defined architecture suffix specified in the file `LAPACK/make.inc`.

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Susan Blackford
2001-08-13