sendmail, 4th Edition

Create libmilter

The libmilter Milter library is not automatically built when you build sendmail. If you wish to build and install it you must do so manually.^[444] Note that you do not need to define the -DMILTER Build macro to build the library, but including it does not hurt.

First build sendmail in your usual manner. Then cd into the libmilter directory and build again there:

% ./Build -c -f ../../mybulid.m4
... lots of output here
% cd libmilter
% ./Build
... lots of output here

Here, a number of Build-time switches were specified to build sendmail. Recall (Build sendmail on page 53) that those switches create a Makefile, and thereafter are no longer needed. That is why a bare ./Build command can be used in the libmilter directory.

After the libmilter is built, you must install it. The place where it is installed, and the permissions given to it, are defined by the various confLIB... Build macros (confLIB... on page 81). By default, libmilter will be installed in /usr/lib, so the install command must be run by root:

# ./Build install
... lots of output here

The library file, libmilter.a, is installed by default in the /usr/lib directory. Two corresponding #include files, mfapi.h and mfdef.h, are installed by default in the /usr/include/libmilter directory. No Unix manual pages are installed. Instead, you must read HTML files located under the sendmail source tree, in libmilter/docs, to learn how to use this library.

^{[444] †} For Linux, the sendmail rpm package includes a prebuilt