title: Linking brew installed openblas to /usr/local
body: <p>I have installed <code>R</code> that in turns installs <code>openblas</code> - but <em>not</em> to <code>/usr/local</code> : </p>
  
  <pre><code>==&gt; openblas
  openblas is keg-only, which means it was not symlinked into /usr/local,
  because macOS provides BLAS and LAPACK in the Accelerate framework.
  
  For compilers to find openblas you may need to set:
    export LDFLAGS="-L/usr/local/opt/openblas/lib"
    export CPPFLAGS="-I/usr/local/opt/openblas/include"
  
  For pkg-config to find openblas you may need to set:
    export PKG_CONFIG_PATH="/usr/local/opt/openblas/lib/pkgconfig"
  </code></pre>
  
  <p>My primary use case for <code>openblas</code> is with <code>R</code> and <code>scipy</code>. The latter _no longer supports the Macos Accelerate package`: so there's no problem with redirecting to brew. The former will be using the brew anyways: so I see no harm in doing this. But <em>how</em> to do it? </p>