PKG.M4(7) BSD Miscellaneous Information Manual PKG.M4(7)
NAME
pkg.m4 — autoconf macros for using pkgconf
SYNOPSIS
PKG_PREREQ
PKG_PROG_PKG_CONFIG
PKG_CHECK_MODULES
PKG_CHECK_MODULES_STATIC
PKG_INSTALLDIR
PKG_NOARCH_INSTALLDIR
PKG_CHECK_VAR
PKG_WITH_MODULES
PKG_HAVE_WITH_MODULES
PKG_HAVE_DEFINE_WITH_MODULES
DESCRIPTION
pkg.m4 is a collection of autoconf macros which help to configure com-
piler and linker flags for development libraries. This allows build sys-
tems to detect other dependencies and use them with the system toolchain.
AUTOCONF MACROS
PKG_PREREQ(MIN-VERSION)
Checks that the version of the pkg.m4 autoconf macros in use is at least
MIN-VERSION. This can be used to ensure a particular pkg.m4 macro will
be available.
PKG_PROG_PKG_CONFIG([MIN-VERSION])
Checks for an implementation of pkg-config which is at least MIN-VERSION
or newer.
PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES [,ACTION-IF-FOUND [,ACTION-IF-
NOT-FOUND]])
PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES [,ACTION-IF-FOUND
[,ACTION-IF-NOT-FOUND]])
Checks whether a given module set exists, and if so, defines CFLAGS and
LIBS variables prefixed by VARIABLE-PREFIX with the output from --cflags
and --libs respectively.
The optional ACTION-IF-FOUND and ACTION-IF-NOT-FOUND arguments are shell
fragments that should be executed if the module set is found or not
found.
If $PKG_CONFIG is not defined, the PKG_PROG_PKG_CONFIG macro will be exe-
cuted to locate a pkg-config implementation.
The PKG_CHECK_MODULES_STATIC macro provides the same behaviour as
PKG_CHECK_MODULES with static linking enabled via the --static flag.
PKG_INSTALLDIR(DIRECTORY)
Defines the variable $pkgconfigdir as the location where a package should
install pkg-config .pc files.
By default the directory is $libdir/pkgconfig, but the default can be
changed by passing the DIRECTORY parameter.
This value can be overridden with the --with-pkgconfigdir configure pa-
rameter.
PKG_NOARCH_INSTALLDIR(DIRECTORY)
Defines the variable $noarch_pkgconfigdir as the location where a package
should install pkg-config .pc files.
By default the directory is $datadir/pkgconfig, but the default can be
changed by passing the DIRECTORY parameter.
This value can be overridden with the --with-noarch-pkgconfigdir config-
ure parameter.
PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE, [ACTION-IF-FOUND],
[ACTION-IF-NOT-FOUND])
Retrieves the value of the pkg-config variable CONFIG-VARIABLE from
MODULE and stores it in the VARIABLE variable.
Note that repeated usage of VARIABLE is not recommended as the check will
be skipped if the variable is already set.
PKG_WITH_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],[ACTION-IF-
NOT-FOUND], [DESCRIPTION], [DEFAULT])
Prepares a "--with-" configure option using the lowercase VARIABLE-PREFIX
name, merging the behaviour of AC_ARG_WITH and PKG_CHECK_MODULES in a
single macro.
PKG_HAVE_WITH_MODULES(VARIABLE-PREFIX, MODULES, [DESCRIPTION], [DEFAULT])
Convenience macro to trigger AM_CONDITIONAL after a PKG_WITH_MODULES
check. VARIABLE-PREFIX is exported as a make variable.
PKG_HAVE_DEFINE_WITH_MODULES(VARIABLE-PREFIX, MODULES, [DESCRIPTION],
[DEFAULT])
Convenience macro to trigger AM_CONDITIONAL and AC_DEFINE after a
PKG_WITH_MODULES check. VARIABLE-PREFIX is exported as a make variable.
BSD December 5, 2017 BSD
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