Irix download

[Jacques Gabarro-Arpa]

I downloaded  abisuite.0.7.12.tar.gz for Irix. Once the file gunziped and tared I entered the just created directory AbiSuite.
Following instructions next thing to do is to run the script

./install.sh

but this script appears nowhere in this directory. Here is a list of its contents

drwxr--r--    5 mordev   dev         4096 Jan 19 15:19 AbiWord
-rw-r-----    1 mordev   dev        17989 Dec 11 09:44 COPYING
drwxr--r--    2 mordev   dev           60 Jan 19 15:19 bin
drwxr--r--    2 mordev   dev           31 Jan 19 15:19 dictionary
drwxr--r--    2 mordev   dev         4096 Jan 19 15:19 fonts
drwxr--r--    2 mordev   dev           78 Jan 19 15:19 icons
-rw-r-----    1 mordev   dev         4580 Dec 11 09:44 readme.txt

this script also appears nowhere in the directory tree.
Can someone explain me what I did wrong ?