Requirements

This extension requires the c-client library to be
installed. Grab the latest version from » https://www.washington.edu/imap/
and compile it.

It’s important that you do not copy the IMAP source
files directly into the system include directory as there may be
conflicts. Instead, create a new directory inside the system
include directory, such as /usr/local/imap-2000b/ (location and name depend
on your setup and IMAP version), and inside this new directory
create additional directories named lib/ and include/.
From the c-client directory from your
IMAP source tree, copy all the *.h
files into include/ and all the
*.c files into lib/. Additionally when you compiled IMAP, a file
named c-client.a was created. Also put
this in the lib/ directory but rename
it as libc-client.a.

Note:

To build the c-client library with SSL or/and
Kerberos support read the docs supplied with the package.

Note: In
Mandrake Linux, the IMAP library (libc-client.a) is compiled without Kerberos
support. A separate version with SSL (client-PHP4.a) is installed. The library must be
recompiled in order to add Kerberos support.