> mkdir alpgen

Copy to alpgen/ the ALPGEN package downloaded from the ALPGEN home page, e.g. v212.tgz, and unpack it issuing the following commnad in teh alpgen/ directory:

> tar -zxvf v212.tgz

Verify that the compiler options coded in the make procedure are consistent with the F77 or F90 compiler available on your platform. To do this, open the file alpgen/compile.mk and verify the FFF and FF90 assignements. If you need to change them, just add your preferred FFF and FF90 compile options at the end of the file

To verify that all is well, do a validation test. Issue the command:

> make validate

This will compile and link the executables for each subprocess, make a test run, and compare the outcome with the reference results provided with the package. The result of the validation test will appear in the file validation/val.summary . If all is well, it will look like:

> more validation/val.summary
For process=wqq
Diff between REF and NEW:
*****
For process=zqq
Diff between REF and NEW:
1c1
< NEWzqq_0

---

etc.

If your run generates results different than the reference values, these will appear with lines like

3,4c3,4
< 25.0 0.285363E-01 0.152986E-01 0.111788E+01
< NEWzqq_1

---

Small differences are likely due to a possible compiler dependence in the rounding off. Larger differences are an indication that something may be wrong. In this case, please contact the authors.