MIT Kerberos Documentation

Building Kerberos V5

This section details how to build and install MIT Kerberos software from the source.


In order to build Kerberos V5, you will need approximately 60-70 megabytes of disk space. The exact amount will vary depending on the platform and whether the distribution is compiled with debugging symbol tables or not.

Your C compiler must conform to ANSI C (ISO/IEC 9899:1990, “c89”). Some operating systems do not have an ANSI C compiler, or their default compiler requires extra command-line options to enable ANSI C conformance.

If you wish to keep a separate build tree, which contains the compiled *.o file and executables, separate from your source tree, you will need a make program which supports VPATH, or you will need to use a tool such as lndir to produce a symbolic link tree for your build tree.

Obtaining the software

The source code can be obtained from MIT Kerberos Distribution page, at The MIT Kerberos distribution comes in an archive file, generally named krb5-VERSION-signed.tar, where VERSION is a placeholder for the major and minor versions of MIT Kerberos. (For example, MIT Kerberos 1.9 has major version “1” and minor version “9”.)

The krb5-VERSION-signed.tar contains a compressed tar file consisting of the sources for all of Kerberos (generally named krb5-VERSION.tar.gz) and a PGP signature file for this source tree (generally named krb5-VERSION.tar.gz.asc). MIT highly recommends that you verify the integrity of the source code using this signature, e.g., by running:

tar xf krb5-VERSION-signed.tar
gpg --verify krb5-VERSION.tar.gz.asc

Unpack krb5-VERSION.tar.gz in some directory. In this section we will assume that you have chosen the top directory of the distribution the directory /u1/krb5-VERSION.

Review the README file for the license, copyright and other sprecific to the distribution information.