This document describes how to compile php IMAP support. Please don't treat it as a complete and prescriptive manual. Different versions and platforms may require additional steps or packages, and we recommend that the compilation is performed by a qualified system administrator.

1. Log in as root:
   su -
2. Download IMAP installation
3. Untar the package:
   tar -zxf IMAP_PACKAGE_FILENAME
4. Enter the source directory:
   cd IMAP_PACKAGE_DIRECTORY
5. Create a symlink for SSL:
   # [ -d /usr/local/ssl ] || ln -s /usr /usr/local/ssl
6. Build the package.
   Linux RedHat ES3:
   # make lrh EXTRACFLAGS="-I/usr/kerberos/include"
   Linux RedHat 7.x:
   # make lrh
   FreeBSD:
   # make bsf
7. Change file permissions:
   Linux:
   # chown root:root `find ./ | grep ".*.h$" | xargs` c-client/c-client.a
   FreeBSD:
   # chown root:wheel `find ./ | grep ".*.h$" | xargs` c-client/c-client.a
8. Install the lib and include files:
   # mkdir -p /hsphere/shared/lib
   # mkdir -p /hsphere/shared/include/c-client
   # cp -f c-client/c-client.a /hsphere/shared/lib/
   # cp -f src/c-client/*.h /hsphere/shared/include/c-client/
   # cp -f c-client/linkage.h /hsphere/shared/include/c-client/
   # cp -f src/osdep/unix/*.h /hsphere/shared/include/c-client/
   # [ -f /hsphere/shared/include/c-client/osdep.h ] && \
   rm -f /hsphere/shared/include/c-client/osdep.h
9. Create the osdep.h link:
   Linux:
   # ln -s /hsphere/shared/include/c-client/os_slx.h \
   /hsphere/shared/include/c-client/osdep.h
   FreeBSD:
   # ln -s /hsphere/shared/include/c-client/os_bsf.h \
   /hsphere/shared/include/c-client/osdep.h