I think the original poster was having trouble with the initial pre compile ./configure not the actual eggdrop config set up. I have seen this before a long time ago and cant remember the solution. Try contacting the shell admin.
Sorry I cannot help
good luck
This error is caused by bash whenever it is unable to find the executable to parse the script, so Alchera's post is partially on target, although he got the wrong file.
Most likely the system in question has some non-standard shell-definitions, most likely lacking a symbolic link from /bin/sh to bash (or any other viable shell on the system).
A quick-fix would be to bug someone with root privileges to execute this: