NAME

       pg_config - retrieve information about the installed version of PostgreSQL

SYNOPSIS

       pg_config [option...]

DESCRIPTION

       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 and libraries.

OPTIONS

       To use pg_config, supply one or more of the following options:

       --bindir
           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.

       --docdir
           Print the location of documentation files.

       --htmldir
           Print the location of HTML documentation files.

       --includedir
           Print the location of C header files of the client interfaces.

       --pkgincludedir
           Print the location of other C header files.

       --includedir-server
           Print the location of C header files for server programming.

       --libdir
           Print the location of object code libraries.

       --pkglibdir
           Print the location of dynamically loadable modules, or where the server would search
           for them. (Other architecture-dependent data files might also be installed in this
           directory.)

       --localedir
           Print the location of locale support files. (This will be an empty string if locale
           support was not configured when PostgreSQL was built.)

       --mandir
           Print the location of manual pages.

       --sharedir
           Print the location of architecture-independent support files.

       --sysconfdir
           Print the location of system-wide configuration files.

       --pgxs
           Print the location of extension makefiles.

       --configure
           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 patches.) See also the examples below.

       --cc
           Print the value of the CC variable that was used for building PostgreSQL. This shows
           the C compiler used.

       --cppflags
           Print the value of the CPPFLAGS variable that was used for building PostgreSQL. This
           shows C compiler switches needed at preprocessing time (typically, -I switches).

       --cflags
           Print the value of the CFLAGS variable that was used for building PostgreSQL. This
           shows C compiler switches.

       --cflags_sl
           Print the value of the CFLAGS_SL variable that was used for building PostgreSQL. This
           shows extra C compiler switches used for building shared libraries.

       --ldflags
           Print the value of the LDFLAGS variable that was used for building PostgreSQL. This
           shows linker switches.

       --ldflags_ex
           Print the value of the LDFLAGS_EX variable that was used for building PostgreSQL. This
           shows linker switches used for building executables only.

       --ldflags_sl
           Print the value of the LDFLAGS_SL variable that was used for building PostgreSQL. This
           shows linker switches used for building shared libraries only.

       --libs
           Print the value of the LIBS variable that was used for building PostgreSQL. This
           normally contains -l switches for external libraries linked into PostgreSQL.

       --version
           Print the version of PostgreSQL.

       -?, --help
           Show help about pg_config command line arguments, and exit.
       If more than one option is given, the information is printed in that order, one item per
       line. If no options are given, all available information is printed, with labels.

NOTES

       The option --includedir-server was added 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 option --includedir. To make your package handle both cases, try the
       newer option first and test the exit status to see whether it succeeded.

       The options --docdir, --pkgincludedir, --localedir, --mandir, --sharedir, --sysconfdir,
       --cc, --cppflags, --cflags, --cflags_sl, --ldflags, --ldflags_sl, and --libs were added in
       PostgreSQL 8.1. The option --htmldir was added in PostgreSQL 8.4. The option --ldflags_ex
       was added in PostgreSQL 9.0.

       In releases prior to PostgreSQL 7.1, before pg_config came to be, a method for finding the
       equivalent configuration information did not exist.

EXAMPLE

       To reproduce the build configuration of the current PostgreSQL installation, run the
       following command:

           eval ./configure `pg_config --configure`

       The output of pg_config --configure contains shell quotation marks so arguments with
       spaces are represented correctly. Therefore, using eval is required for proper results.