See the perl online documentation; try running man perl. The same text is available at PERL: Home: Documentation.
Please try to make your shell scripts as portable as possible. See the Single UNIX Specification, Version 2, sh.
The upstream documentation is texinfo and should be installed in some CVS package: try info cvs. Or see CVS - Table of Contents.
A GNU program to generate configure scripts that test for system feature availability. The results of these tests are used to transform FILENAME.in to FILENAME by replacing doing substitutions like (in sed) s,@PERL@,/usr/local/bin/perl5.
A program used with autoconf to produce Makefile.in files in each source directory each of which will be made into a Makefile by the configure script. It bases its work on the Makefile.am files.
You do not need to have autoconf or automake to use Wigwam, but you would need it for building Wigwam from CVS, and we recommended it if you are developing C code.
autoconf and automake come with documentation in the INFO format. It is available for download from ftp.gnu.org, but most systems come with it. It requires m4.
A program to synchronize the contents of two directories on two different machines. This program relies on SSH (or an equivalent) to connect securely between the machines.