3.3 @command{autoconf}

The @command{autoconf} program produces a Bourne shell script called `configure' from a template file called `configure.in'. `configure.in' contains both Bourne shell script, and @command{m4} macros. @command{autoconf} expands the @command{m4} macros into `real' shell script. The resulting `configure' script performs various checks for installed programs, compiler characteristics and other system information such as available headers and libraries. See Info file `autoconf', node `Top', for more information.

GIMP-Print provides an @command{m4} macro, AM_PATH_GIMPPRINT, suitable for use in a `configure.in'. It defines the environment variables @env{GIMPPRINT_CFLAGS}, @env{GIMPPRINT_LIBS} and @env{GIMPPRINT_CONFIG}. You can optionally specify a minimum version of the library to use, and shell script to run if the test suceeds or fails.

Macro: AM_PATH_GIMPPRINT ([minimum-version [, action-if-found [, action-if-not-found]]])

Check for an installed version of GIMP-Print greater than or equal to minimum-version.

action-if-found is a list of shell commands to run if the check for the library succeeds; action-if-not-found is a list of shell commands to run if the check fails.

The macro sets the following environment variables: @env{GIMPPRINT_CFLAGS}, @env{GIMPPRINT_LIBS} and @env{GIMPPRINT_CONFIG}. It also will substitute them into any `Makefile.in' you specify in AC_OUTPUT because it calls AC_SUBST for each of them. However, you will probably be using @command{automake} to generate your `Makefile.in' files (see section 3.4 @command{automake}).

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