NAME

       pkgconf - a system for configuring build dependency information

SYNOPSIS

       pkgconf [options] [list of modules]

DESCRIPTION

       pkgconf  is a program which helps to configure compiler and linker flags for development frameworks. This
       allows build systems to detect other dependencies and use them with the system toolchain.

GENERAL OPTIONS

       --version
              Display the supported pkg-config version and exit.

       --atleast-pkgconfig-version=VERSION
              Exit with error if we do not support the requested pkg-config version.

       --errors-to-stdout
              Print all errors on the main output stream instead of the error output stream.

       --silence-errors
              Do not display any errors at all.

       --list-all
              Walk all directories listed in the PKG_CONFIG_PATH environmental variable and display  information
              on packages which have registered information there.

       --simulate
              Simulates resolving a dependency graph based on the requested modules on the command line. Dumps a
              series of trees denoting pkgconf's resolver state.

       --no-cache
              Skip  caching  packages  when  they  are loaded into the internal resolver.  This may result in an
              alternate dependency graph being computed.

       --ignore-conflicts
              Ignore 'Conflicts' rules in modules.

       --env-only
              Learn about pkgconf's configuration strictly from environmental variables.

       --maximum-traverse-depth=DEPTH
              Impose a limit on the allowed depth in the dependency graph.  For  example,  a  depth  of  2  will
              restrict  the  resolver  from  acting  on  child  dependencies  of modules added to the resolver's
              solution.

       --static
              Compute a deeper dependency graph and use compiler/linker flags intended for static linking.

MODULE-SPECIFIC OPTIONS

       --atleast-version=VERSION
              Exit with error if a module's version is less than the specified version.

       --exact-version=VERSION
              Exit with error if a module's version is not exactly the specified version.

       --max-version=VERSION
              Exit with error if a module's version is greater than the specified version.

       --exists
              Exit with a non-zero result if the dependency resolver was able  to  find  all  of  the  requested
              modules.

       --uninstalled
              Exit  with  a  non-zero  result if the dependency resolver uses an 'uninstalled' module as part of
              it's solution.

       --no-uninstalled
              Forbids the dependency resolver from considering 'uninstalled' modules as part of a solution.

QUERY-SPECIFIC OPTIONS

       --cflags, --cflags-only-I, --cflags-only-other
              Display either all CFLAGS, only -I CFLAGS or only CFLAGS that are not -I.

       --libs, --libs-only-L, --libs-only-l, --libs-only-other
              Display either all linker flags, only -L linker flags, only -l linker flags or only  linker  flags
              that are not -L or -l.

       --keep-system-cflags, --keep-system-libs
              Keep  CFLAGS  or  linker flag fragments that would be filtered due to being included by default in
              the compiler.

       --define-variable=VARNAME=VALUE
              Define VARNAME as VALUE. Variables are used in query output, and some modules' results may  change
              based on the presence of a variable definition.

       --print-variables
              Print all seen variables for a module to the output channel.

       --variable=VARNAME
              Print the value of VARNAME.

       --print-requires, --print-requires-private
              Print the modules included in either the Requires field or the Requires.private field.

       --digraph
              Dump  the dependency resolver's solution as a graphviz 'dot' file.  This can be used with graphviz
              to visualize module interdependencies.

EXAMPLES

       Displaying the CFLAGS of a package:
              shell> pkgconf --cflags foo
              -fPIC -I/usr/include/foo

                                                  December 2013                                       pkgconf(1)