PKG-CONFIG(1) OpenBSD Reference Manual PKG-CONFIG(1)NAMEpkg-config - fetch metadata about installed software packages
SYNOPSISpkg-config [options] pkg-name [pkg-name ...]
DESCRIPTION
The pkg-config utility retrieves metadata about the installation of
software packages. This metadata includes version, compiler and linker
flags, and dependency information. It is inspired by, and intended to
operate as a drop-in replacement to, the program of the same name
available from freedesktop.org.
Metadata is stored in files named after the package they describe; the
Yoyodyne package would likely be described by "yoyodyne.pc". Not all
software packages provide pkg-config metadata. Libraries from base
install their metadata in /usr/lib/pkgconfig; packages controlled by the
ports(7) system store their metadata, if provided, in
${LOCALBASE}/lib/pkgconfig; the X Window System stores its metadata in
${X11BASE}/lib/pkgconfig. The pkg-config utility will search these
locations by default.
Because pkg-config attempts to output the full set of compiler or linker
flags required to use a package, it will also output the flags required
for any prerequisite packages. If the "foo" package depends on the "bar"
package, "pkg-config --cflags foo" might output something like "-
I/usr/local/include/foo -I/usr/local/include/bar", even though the
compiler flags for "bar" were not explicitly requested.
The options are as follows:
--atleast-pkgconfig-version version
Exit with error if the version of pkg-config is not greater than
or equal to the specified version.
--atleast-version version
Exit with error if the specified package's version is not greater
than or equal to the specified version.
--cflags
Return all compiler flags required to compile against the
package.
--cflags-only-I
Return only the include path flags required to compile against
the package.
--cflags-only-other
Return all compiler flags, other than the include path flags,
required to compile against the package.
--debug
Enable internal development and debugging messages.
--errors-to-stdout
Direct error messages to stdout rather than stderr.
--exists
Return true if all the specified packages are installed. This is
the default operation.
--help | --usage
Print a help message and exit.
--libs Return all linker flags required to link against the package.
--libs-only-L
Return only the library path (-L/path/to/lib) flags required to
link against the package.
--libs-only-l
Return only the library (-lwhatever) flags required to link
against the package.
--libs-only-other
Return linker flags, other than the library and path flags,
required to compile against the package.
--list-all
List all installed packages and exit.
--modversion
Fetch package version. If no package is given, pkg-config
returns its own version.
--print-errors
Print error messages and exit with an error when errors occur.
This is the default operation.
--silence-errors
Do not print error messages, just exit with an error.
--static
Return the compiler and/or linker flags required for static
linking.
--uninstalled
Allow packages not controlled by pkg-config to be used.
--variable name
Fetch the value of the named variable.
--version
Print version of pkg-config and exit.
ENVIRONMENT
PKG_CONFIG_PATH This can be used to specify a colon-separated list of
paths to search for package files. If given, this list
of paths is prepended to the standard search path.
EXIT STATUS
The pkg-config utility exits 0 on success, and >0 if an error occurs.
SEE ALSOpkg_info(1), ports(7)HISTORY
The pkg-config utility first appeared in OpenBSD 4.1.
OpenBSD 4.9 December 28, 2010 OpenBSD 4.9
