Using the MINUIT libraryXSPEC can be linked with the CERN MINUIT library to provide additional optimization methods. CERN have now released the source code under the GPL so it can be included in the XSPEC source tree. This is standard in the XSPEC v11.2 (HEAsoft 5.2) release. If you are running this release you need take no further action.
If you are still running v11.1 (HEAsoft 5.1) and wish to add MINUIT to the source tree follow these steps.
Xspec Home Page
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