sendmail, 4th Edition

-I

Add additional include directories Build switch

The -I switch is used to list include-file directories on the command line. When used with -L (-L on page 351), for example, it can select an experimental version of BIND:

% ./Build -I/src/bind/9.4.1x5/include -L/src/bind/9.4.1x5/lib

The value specified with this -I switch is appended to whatever values are specified in your m4 build file with confINCDIRS (confINCDIRS on page 78) and to whatever values might be preset as defaults in your devtools/OS file. The final, assembled value is made a part of your configuration file, and is also made the value of the INCDIRS= directive in your Makefile.

Multiple -I switches can be used to specify a series of include directories. For example:

% ./Build -I/usr/local/include -I/usr/tools/include

In general, include-file directories should be listed with the confINCDIRS m4 directive (confINCDIRS on page 78) in your m4 build file, instead of on the command line.