File: autoconf.info,  Node: Compilers and Options,  Next: Multiple Architectures,  Prev: Basic Installation,  Up: Running configure Scripts

16.2 Compilers and Options
==========================

Some systems require unusual options for compilation or linking that the
‘configure’ script does not know about.  Run ‘./configure --help’ for
details on some of the pertinent environment variables.

   You can give ‘configure’ initial values for configuration parameters
by setting variables in the command line or in the environment.  Here is
an example:

     ./configure CC=gcc CFLAGS=-g LIBS=-lposix

   *note Defining Variables:: and *note Preset Output Variables:: for
more details.