The pg_config utility prints configuration parameters
of the currently installed version of PostgreSQL. It is
intended, for example, to be used by software packages that want to interface
to PostgreSQL to facilitate finding the required header files
To use pg_config, supply one or more of the following options:
Print the location of user executables. Use this, for example, to find
the psql program. This is normally also the location
where the pg_config program resides.
Print the location of C header files of the client interfaces.
Print the location of C header files for server
Print the location of object code libraries.
Print the location of dynamically loadable modules, or where
the server would search for them. (Other
architecture-dependent data files may also be installed in this
Print the options that were given to the configure
script when PostgreSQL was configured for building.
This can be used to reproduce the identical configuration, or
to find out with what options a binary package was built. (Note
however that binary packages often contain vendor-specific custom
Print the version of PostgreSQL and exit.
If more than one option (except for --version) is given, the
information is printed in that order, one item per line.
The option --includedir-server is new in
PostgreSQL 7.2. In prior releases, the server include files were
installed in the same location as the client headers, which could
be queried with the --includedir. To make your
package handle both cases, try the newer option first and test the
exit status to see whether it succeeded.
In releases prior to PostgreSQL 7.1, before the
pg_config came to be, a method for finding the
equivalent configuration information did not exist.
The pg_config utility first appeared in PostgreSQL 7.1.