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<h3>Download Instructions</h3>
<p>
On a Linux machine with GAP installed, the HAP library can be loaded as
follows:<
br>
</p>
<
ul>
<
li>First download the file <a
href=
"https://github.com/gap-packages/hap/releases/download/v1.70/hap-1.70.tar.gz">hap1.70.tar.gz</a>
which contains the most recent development version of HAP to the
subdirectory
"pkg/" of GAP. If you don
't have access to this subdirectory,
then create a directory
"pkg" in your home directory and download the
file there. (If you
'd prefer to download the most
recent development version of HAP then download the file <a
href=
"https://github.com/gap-packages/hap/releases/download/v1.47/hap-1.47.tar.gz">hap1.70-dev.tar.gz</a>
instead.)<
br>
</
li>
</
ul>
<
ul>
<
li>Change to directory
"pkg/" and type
"gunzip
hap1.70.tar.gz
"
followed
by
"tar
-xvf hap1.70.tar
" .
</
ul>
<
ul>
<
li>Start GAP. (If you have created
"pkg" in your home
directory then
start GAP with the
command "gap -l 'path/homedir;' " where
path/homedir is the path to your home directory.)</
li>
</
ul>
<
ul>
<
li>In GAP type
" LoadPackage("HAP
"); "<
br>
</
li>
</
ul>
<
ul>
<
li>Help on HAP can be found on the <a
href=
"https://gap-packages.github.io/hap/" target=
"index">HAP
home page</a> (a version of which is included in directory
"pkg/Hap1.70/www" of the distribution).</
li>
</
ul>
<
ul>
<
li>A few of HAP
's (optional) functions rely on Polymake
software
(available from www.math.tu-berlin.de/polymake/) which should be
installed so that it
starts using the
command "polymake" at the Linux prompt. A few
(optional) functions rely on Graphviz software (available from
https://www.graphviz.org/).<
br>
</
li>
</
ul>
<
ul>
<
li>Performance can be improved by using a compiled
version of the HAP library. The following steps will produce a compiled
version. <
br>
(1) Change to the directory
"pkg/Hap1.70/" .<
br>
(2) Edit the file
"compile" so that: PKGDIR is equal to the path to the<
br>
directory
"pkg" where your GAP packages are stored; GACDIR is equal to
the<
br>
path to the directory where the GAP compiler
"gac" is stored.<
br>
(3) Type
"./compile" .<
br>
The next
time HAP is loaded a compiled version will be loaded.</
li>
</
ul>
<
ul>
<
li>Should you want to return to an uncompiled version, change
to the directory<
br>
"pkg/Hap1.70/" and type
"./uncompile".</
li>
</
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