This appendix describes the procedure of installing the package.
Installing Unipot should be easy once you have installed GAP itself.
We assume here that you want to install Unipot in its standard
location, which is in the pkg' ubdirectory of the main GAP4
installation.
You have to perform the following steps to install Unipot:
unzoo utility.
ALLPKG file so that the Unipot
documentation will be available when GAP starts up.
A.2 What you need to install unipot
Being a package for GAP4 and implemented in the GAP4 language, Unipot of course needs GAP4, at least version 4.2. (See Root Systems why you shouldn't use it with GAP4.1.) Unipot runs on any system supporting GAP4. It is tested with GAP4.2, but should work with any non-beta version of GAP4 (with exceptions stated in Root Systems for GAP4.1).
A.3 Getting and unpacking the sources
You can download the sources from the same places as GAP. So the main FTP servers are:
ftp://ftp-gap.dcs.st-and.ac.uk/pub/gap/gap4/ ftp://ftp.math.rwth-aachen.de/pub/gap4/ ftp://ftp.ccs.neu.edu/pub/mirrors/ftp-gap.dcs.st-and.ac.uk/pub/gap/gap4/ ftp://pell.anu.edu.au/pub/algebra/gap4/
You need only one file with the name unipot1r1.zoo which is in the
subdirectory for the packages. When you installed GAP you used
the utility unzoo to unpack the distribution. You will need this here
again. See the GAP Reference manual, chapter Installing GAP for
instructions on how to get and compile this. You now change your current
directory to the pkg subdirectory of the location where you installed
GAP (when you used unzoo to unpack the GAP distribution archive,
a new directory called gap4rX
for some X was created; this directory contains the pkg
subdirectory). The standard location would be:
(do not type the prompt character #)
# cd /usr/local/lib/gap4rX/pkg
Now you extract the sources for the Unipot package:
# unzoo -x unipot1r1.zoo unipot/README -- extracted as text ... /bin/mkdir: cannot make directory `unipot': File exists ...
Note that the warning is not serious.
The unzoo utility unpacks the files and stores them into the apropriate
subdirectories. Unipot resides completely in the following subdirectory
(assuming standard location):
/usr/local/lib/gap4rX/pkg/unipot
A.4 Installing in a different than the standard location
It could happen that you do not want to install Unipot in its
standard location, perhaps because you do not want to bother your
system administrator and have no access to the GAP directory. In
this case you can unpack Unipot in any other location within a
pkg directory with the unzoo command as described above. Let us
call this directory pkg for the moment. You get an Unipot
subdirectory with all the files of Unipot in it. Then you follow the
standard procedure with following exceptions:
Say, the directory containing the pkg directory is
/home/user/mygap.
Note that you have either to edit the startup script gap.sh:
Add /home/user/mygap separating it with semicolon ; from previous
directories for the variable GAP_DIR.
Or you have to start GAP with following command line option:
# gap4 -l "/usr/local/lib/gap4rX;/home/user/mygap"
Add a line to the ALLPKG file in the pkg directory
# cd /name-of-gap-directory/pkg # echo unipot >> ALLPKG
This makes the documentation of the package available in any GAP4 session, even if the package is not loaded. Like any other package, Unipot is loaded in GAP with
gap> RequirePackage("unipot");
within the GAP4 session.
If you have problems with this package, wish to make comments or suggestions, or if you find bugs, please send e-mail to me.
Sergei Haller, Sergei.Haller@math.uni-giessen.de
Also, I would like to hear about applications of this package. (See Citing Unipot.)
Unipot manual