232 lines
7.5 KiB
Groff
232 lines
7.5 KiB
Groff
.\" Copyright (c) 2011, 2012, 2013, 2014, 2015, 2016 pkgconf authors (see AUTHORS).
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.\"
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.\" Permission to use, copy, modify, and/or distribute this software for any
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.\" purpose with or without fee is hereby granted, provided that the above
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.\" copyright notice and this permission notice appear in all copies.
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.\"
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.\" This software is provided 'as is' and without any warranty, express or
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.\" implied. In no event shall the authors be liable for any damages arising
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.\" from the use of this software.
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.Dd November 15, 2016
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.Dt PKGCONF 1
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.Os
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.Sh NAME
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.Nm pkgconf
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.Nd a system for configuring build dependency information
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.Sh SYNOPSIS
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.Nm
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.Op Ar options
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.Op Ar list of modules
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.Sh DESCRIPTION
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.Nm
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is a program which helps to configure compiler and linker flags for
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development libraries.
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This allows build systems to detect other dependencies and use them with the
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system toolchain.
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.Sh GENERAL OPTIONS
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.Bl -tag -width indent
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.It Fl -version
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Display the supported pkg-config version and exit.
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.It Fl -atleast-pkgconfig-version Ns = Ns Ar VERSION
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Exit with error if we do not support the requested pkg-config version.
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.It Fl -errors-to-stdout
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Print all errors on the main output stream instead of the error output stream.
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.It Fl -silence-errors
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Do not display any errors at all.
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.It Fl -list-all
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Walk all directories listed in the
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.Va PKG_CONFIG_PATH
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environmental variable and display information on packages which have registered
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information there.
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.It Fl -simulate
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Simulates resolving a dependency graph based on the requested modules on the
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command line.
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Dumps a series of trees denoting pkgconf's resolver state.
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.It Fl -no-cache
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Skip caching packages when they are loaded into the internal resolver.
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This may result in an alternate dependency graph being computed.
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.It Fl -ignore-conflicts
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Ignore
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.Sq Conflicts
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rules in modules.
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.It Fl -env-only
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Learn about pkgconf's configuration strictly from environmental variables.
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.It Fl -validate Ar package ...
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Validate specific
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.Sq .pc
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files for correctness.
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.It Fl -maximum-traverse-depth Ns = Ns Ar DEPTH
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Impose a limit on the allowed depth in the dependency graph.
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For example, a depth of 2 will restrict the resolver from acting on child
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dependencies of modules added to the resolver's solution.
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.It Fl -static
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Compute a deeper dependency graph and use compiler/linker flags intended for
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static linking.
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.It Fl -shared
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Compute a simple dependency graph that is only suitable for shared linking.
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.It Fl -pure
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Treats the computed dependency graph as if it were pure.
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This is mainly intended for use with the
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.Fl -static
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flag.
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.It Fl -no-provides
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Ignore
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.Sq Provides
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rules in modules when resolving dependencies.
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.It Fl -with-path Ns = Ns Ar PATH
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Adds a new module search path to pkgconf's dependency resolver.
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Paths added in this way are given preference before other paths.
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.It Fl -define-prefix
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Attempts to determine the prefix variable to use for CFLAGS and LIBS entry relocations.
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This is mainly useful for platforms where framework SDKs are relocatable, such as Windows.
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.It Fl -dont-define-prefix
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Disables the
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.Sq define-prefix
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feature.
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.It Fl -prefix-variable Ns = Ns Ar VARIABLE
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Sets the
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.Sq prefix
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variable used by the
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.Sq define-prefix
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feature.
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.It Fl -relocate Ns = Ns Ar PATH
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Relocates a path using the pkgconf_path_relocate API.
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This is mainly used by the testsuite to provide a guaranteed interface
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to the system's path relocation backend.
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.It Fl -dont-relocate-paths
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Disables the path relocation feature.
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.El
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.Sh MODULE-SPECIFIC OPTIONS
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.Bl -tag -width indent
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.It Fl -atleast-version Ns = Ns Ar VERSION
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Exit with error if a module's version is less than the specified version.
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.It Fl -exact-version Ns = Ns Ar VERSION
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Exit with error if a module's version is not exactly the specified version.
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.It Fl -max-version Ns = Ns Ar VERSION
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Exit with error if a module's version is greater than the specified version.
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.It Fl -exists
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Exit with a non-zero result if the dependency resolver was unable to find all of
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the requested modules.
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.It Fl -uninstalled
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Exit with a non-zero result if the dependency resolver uses an
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.Sq uninstalled
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module as part of its solution.
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.It Fl -no-uninstalled
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Forbids the dependency resolver from considering 'uninstalled' modules as part
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of a solution.
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.El
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.Sh QUERY-SPECIFIC OPTIONS
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.Bl -tag -width indent
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.It Fl -cflags , Fl -cflags-only-I , Fl -cflags-only-other
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Display either all CFLAGS, only
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.Fl I
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CFLAGS or only CFLAGS that are not
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.Fl I .
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.It Fl -libs , Fl -libs-only-L , Fl -libs-only-l , Fl -libs-only-other
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Display either all linker flags, only
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.Fl L
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linker flags, only
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.Fl l
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linker flags or only linker flags that are not
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.Fl L
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or
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.Fl l .
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.It Fl -keep-system-cflags , Fl -keep-system-libs
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Keep CFLAGS or linker flag fragments that would be filtered due to being
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included by default in the compiler.
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.It Fl -define-variable Ns = Ns Ar VARNAME Ns = Ns Ar VALUE
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Define
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.Va VARNAME
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as
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.Va VALUE .
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Variables are used in query output, and some modules' results may change based
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on the presence of a variable definition.
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.It Fl -print-variables
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Print all seen variables for a module to the output channel.
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.It Fl -print-provides
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Print all relevant
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.Sq Provides
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entries for a module to the output channel.
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.It Fl -variable Ns = Ns Ar VARNAME
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Print the value of
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.Va VARNAME .
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.It Fl -print-requires , Fl -print-requires-private
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Print the modules included in either the
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.Va Requires
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field or the
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.Va Requires.private
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field.
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.It Fl -digraph
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Dump the dependency resolver's solution as a graphviz
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.Sq dot
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file.
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This can be used with graphviz to visualize module interdependencies.
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.It Fl -path
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Display the filenames of the
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.Sq .pc
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files used by the dependency resolver for a given dependency set.
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.It Fl -env Ns = Ns Ar VARNAME
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Print the requested values as variable declarations in a similar format as the
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.Xr env 1
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command.
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.It Fl -fragment-filter Ns = Ns Ar TYPES
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Filter the fragment lists for the specified types.
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.It Fl -modversion
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Print the version of the queried module.
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.El
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.Sh ENVIRONMENT
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.Bl -tag -width indent
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.It Va PKG_CONFIG_PATH
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List of secondary directories where
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.Sq .pc
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files are looked up.
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.It Va PKG_CONFIG_LIBDIR
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List of primary directories where
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.Sq .pc
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files are looked up.
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.It Va PKG_CONFIG_SYSROOT_DIR
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.Sq sysroot
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directory, will be prepended to every path defined in
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.Va PKG_CONFIG_PATH .
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Useful for cross compilation.
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.It Va PKG_CONFIG_TOP_BUILD_DIR
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Provides an alternative setting for the
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.Sq pc_top_builddir
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global variable.
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.It Va PKG_CONFIG_PURE_DEPGRAPH
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If set, enables the same behaviour as the
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.Fl -pure
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flag.
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.It Va PKG_CONFIG_SYSTEM_INCLUDE_PATH
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List of paths that are considered system include paths by the toolchain.
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This is a pkgconf-specific extension.
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.It Va PKG_CONFIG_SYSTEM_LIBRARY_PATH
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List of paths that are considered system library paths by the toolchain.
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This is a pkgconf-specific extension.
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.It Va PKG_CONFIG_DISABLE_UNINSTALLED
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If set, enables the same behaviour as the
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.Fl -no-uninstalled
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flag.
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.It Va PKG_CONFIG_LOG
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.Sq logfile
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which is used for dumping audit information concerning installed module versions.
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.It Va PKG_CONFIG_DEBUG_SPEW
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If set, enables additional debug logging.
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The format of the debug log messages is implementation-specific.
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.It Va PKG_CONFIG_DONT_RELOCATE_PATHS
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If set, disables the path relocation feature.
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.It Va PKG_CONFIG_MSVC_SYNTAX
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If set, uses MSVC syntax for fragments.
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.It Va PKG_CONFIG_FDO_SYSROOT_RULES
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If set, follow the sysroot prefixing rules that freedesktop.org pkg-config uses.
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.It Va DESTDIR
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If set to PKG_CONFIG_SYSROOT_DIR, assume that PKG_CONFIG_FDO_SYSROOT_RULES is set.
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.El
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.Sh EXAMPLES
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Displaying the CFLAGS of a package:
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.Dl $ pkgconf --cflags foo
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.Dl -fPIC -I/usr/include/foo
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.Sh SEE ALSO
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.Xr pc 5 ,
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.Xr pkg.m4 7
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