For compiling this extension without compiling imap from sources I did (this was mandrake):
Install the following rpms:
imap
imap-devel
openssl
openssl-devel
krb5
krb5-devel
pam
pam-devel
Do the trick:
# mkdir /usr/include/imap/lib
# cp /usr/lib/libc-client-PHP4.a /usr/include/imap/lib/libc-client.a
And the configure line:
./configure <options> --with-imap=/usr/include/imap --with-imap-ssl
(don't forget --enable-pear ;)
