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#[=======================================================================[.rst:
FindJACK
--------
Finds the JACK Audio Connection Kit library.
Imported Targets
^^^^^^^^^^^^^^^^
This module provides the following imported targets, if found:
``JACK::jack``
The JACK library
#]=======================================================================]
# Prefer finding the libraries from pkgconfig rather than find_library. This is
# required to build with PipeWire's reimplementation of the JACK library.
#
# This also enables using PortAudio with the jack2 port in vcpkg. That only
# builds JackWeakAPI (not the JACK server) which dynamically loads the real
# JACK library and forwards API calls to it. JackWeakAPI requires linking `dl`
# in addition to jack, as specified in the pkgconfig file in vcpkg.
find_package(PkgConfig QUIET)
if(PkgConfig_FOUND)
pkg_check_modules(JACK jack)
else()
find_library(JACK_LINK_LIBRARIES
NAMES jack
DOC "JACK library"
)
find_path(JACK_INCLUDEDIR
NAMES jack/jack.h
DOC "JACK header"
)
endif()
if(WIN32)
# vcpkg provides CMake targets for pthreads4w
# This won't work if pthreads4w was built without vcpkg.
find_package(pthreads REQUIRED)
list(APPEND JACK_LINK_LIBRARIES PThreads4W::PThreads4W)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(
JACK
DEFAULT_MSG
JACK_LINK_LIBRARIES
JACK_INCLUDEDIR
)
if(JACK_FOUND AND NOT TARGET JACK::jack)
add_library(JACK::jack INTERFACE IMPORTED)
target_link_libraries(JACK::jack INTERFACE "${JACK_LINK_LIBRARIES}")
target_include_directories(JACK::jack INTERFACE "${JACK_INCLUDEDIR}")
endif()
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