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-#.rst:
-# FindPkgConfig
-# -------------
-#
-# A `pkg-config` module for CMake.
-#
-# Finds the ``pkg-config`` executable and add the
-# :command:`pkg_check_modules` and :command:`pkg_search_module`
-# commands.
-#
-# In order to find the ``pkg-config`` executable, it uses the
-# :variable:`PKG_CONFIG_EXECUTABLE` variable or the ``PKG_CONFIG``
-# environment variable first.
-
-#=============================================================================
-# Copyright 2006-2014 Kitware, Inc.
-# Copyright 2014 Christoph GrĂ¼ninger <foss@grueninger.de>
-# Copyright 2006 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
-#
-# Distributed under the OSI-approved BSD License (the "License");
-# see accompanying file Copyright.txt for details.
-#
-# This software is distributed WITHOUT ANY WARRANTY; without even the
-# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the License for more information.
-#=============================================================================
-# (To distribute this file outside of CMake, substitute the full
-# License text for the above reference.)
-
-### Common stuff ####
-set(PKG_CONFIG_VERSION 1)
-
-# find pkg-config, use PKG_CONFIG if set
-if((NOT PKG_CONFIG_EXECUTABLE) AND (NOT "$ENV{PKG_CONFIG}" STREQUAL ""))
- set(PKG_CONFIG_EXECUTABLE "$ENV{PKG_CONFIG}" CACHE FILEPATH "pkg-config executable")
-endif()
-find_program(PKG_CONFIG_EXECUTABLE NAMES pkg-config DOC "pkg-config executable")
-mark_as_advanced(PKG_CONFIG_EXECUTABLE)
-
-if (PKG_CONFIG_EXECUTABLE)
- execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --version
- OUTPUT_VARIABLE PKG_CONFIG_VERSION_STRING
- ERROR_QUIET
- OUTPUT_STRIP_TRAILING_WHITESPACE)
-endif ()
-
-include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
-find_package_handle_standard_args(PkgConfig
- REQUIRED_VARS PKG_CONFIG_EXECUTABLE
- VERSION_VAR PKG_CONFIG_VERSION_STRING)
-
-# This is needed because the module name is "PkgConfig" but the name of
-# this variable has always been PKG_CONFIG_FOUND so this isn't automatically
-# handled by FPHSA.
-set(PKG_CONFIG_FOUND "${PKGCONFIG_FOUND}")
-
-# Unsets the given variables
-macro(_pkgconfig_unset var)
- set(${var} "" CACHE INTERNAL "")
-endmacro()
-
-macro(_pkgconfig_set var value)
- set(${var} ${value} CACHE INTERNAL "")
-endmacro()
-
-# Invokes pkgconfig, cleans up the result and sets variables
-macro(_pkgconfig_invoke _pkglist _prefix _varname _regexp)
- set(_pkgconfig_invoke_result)
-
- execute_process(
- COMMAND ${PKG_CONFIG_EXECUTABLE} ${ARGN} ${_pkglist}
- OUTPUT_VARIABLE _pkgconfig_invoke_result
- RESULT_VARIABLE _pkgconfig_failed)
-
- if (_pkgconfig_failed)
- set(_pkgconfig_${_varname} "")
- _pkgconfig_unset(${_prefix}_${_varname})
- else()
- string(REGEX REPLACE "[\r\n]" " " _pkgconfig_invoke_result "${_pkgconfig_invoke_result}")
- string(REGEX REPLACE " +$" "" _pkgconfig_invoke_result "${_pkgconfig_invoke_result}")
-
- if (NOT ${_regexp} STREQUAL "")
- string(REGEX REPLACE "${_regexp}" " " _pkgconfig_invoke_result "${_pkgconfig_invoke_result}")
- endif()
-
- separate_arguments(_pkgconfig_invoke_result)
-
- #message(STATUS " ${_varname} ... ${_pkgconfig_invoke_result}")
- set(_pkgconfig_${_varname} ${_pkgconfig_invoke_result})
- _pkgconfig_set(${_prefix}_${_varname} "${_pkgconfig_invoke_result}")
- endif()
-endmacro()
-
-# Invokes pkgconfig two times; once without '--static' and once with
-# '--static'
-macro(_pkgconfig_invoke_dyn _pkglist _prefix _varname cleanup_regexp)
- _pkgconfig_invoke("${_pkglist}" ${_prefix} ${_varname} "${cleanup_regexp}" ${ARGN})
- _pkgconfig_invoke("${_pkglist}" ${_prefix} STATIC_${_varname} "${cleanup_regexp}" --static ${ARGN})
-endmacro()
-
-# Splits given arguments into options and a package list
-macro(_pkgconfig_parse_options _result _is_req _is_silent _no_cmake_path _no_cmake_environment_path)
- set(${_is_req} 0)
- set(${_is_silent} 0)
- set(${_no_cmake_path} 0)
- set(${_no_cmake_environment_path} 0)
- if(DEFINED PKG_CONFIG_USE_CMAKE_PREFIX_PATH)
- if(NOT PKG_CONFIG_USE_CMAKE_PREFIX_PATH)
- set(${_no_cmake_path} 1)
- set(${_no_cmake_environment_path} 1)
- endif()
- elseif(${CMAKE_MINIMUM_REQUIRED_VERSION} VERSION_LESS 3.1)
- set(${_no_cmake_path} 1)
- set(${_no_cmake_environment_path} 1)
- endif()
-
- foreach(_pkg ${ARGN})
- if (_pkg STREQUAL "REQUIRED")
- set(${_is_req} 1)
- endif ()
- if (_pkg STREQUAL "QUIET")
- set(${_is_silent} 1)
- endif ()
- if (_pkg STREQUAL "NO_CMAKE_PATH")
- set(${_no_cmake_path} 1)
- endif()
- if (_pkg STREQUAL "NO_CMAKE_ENVIRONMENT_PATH")
- set(${_no_cmake_environment_path} 1)
- endif()
- endforeach()
-
- set(${_result} ${ARGN})
- list(REMOVE_ITEM ${_result} "REQUIRED")
- list(REMOVE_ITEM ${_result} "QUIET")
- list(REMOVE_ITEM ${_result} "NO_CMAKE_PATH")
- list(REMOVE_ITEM ${_result} "NO_CMAKE_ENVIRONMENT_PATH")
-endmacro()
-
-# Add the content of a variable or an environment variable to a list of
-# paths
-# Usage:
-# - _pkgconfig_add_extra_path(_extra_paths VAR)
-# - _pkgconfig_add_extra_path(_extra_paths ENV VAR)
-function(_pkgconfig_add_extra_path _extra_paths_var _var)
- set(_is_env 0)
- if(_var STREQUAL "ENV")
- set(_var ${ARGV2})
- set(_is_env 1)
- endif()
- if(NOT _is_env)
- if(NOT "${${_var}}" STREQUAL "")
- list(APPEND ${_extra_paths_var} ${CMAKE_PREFIX_PATH})
- endif()
- else()
- if(NOT "$ENV{${_var}}" STREQUAL "")
- file(TO_CMAKE_PATH "$ENV{${_var}}" _path)
- list(APPEND ${_extra_paths_var} ${_path})
- unset(_path)
- endif()
- endif()
- set(${_extra_paths_var} ${${_extra_paths_var}} PARENT_SCOPE)
-endfunction()
-
-###
-macro(_pkg_check_modules_internal _is_required _is_silent _no_cmake_path _no_cmake_environment_path _prefix)
- _pkgconfig_unset(${_prefix}_FOUND)
- _pkgconfig_unset(${_prefix}_VERSION)
- _pkgconfig_unset(${_prefix}_PREFIX)
- _pkgconfig_unset(${_prefix}_INCLUDEDIR)
- _pkgconfig_unset(${_prefix}_LIBDIR)
- _pkgconfig_unset(${_prefix}_LIBS)
- _pkgconfig_unset(${_prefix}_LIBS_L)
- _pkgconfig_unset(${_prefix}_LIBS_PATHS)
- _pkgconfig_unset(${_prefix}_LIBS_OTHER)
- _pkgconfig_unset(${_prefix}_CFLAGS)
- _pkgconfig_unset(${_prefix}_CFLAGS_I)
- _pkgconfig_unset(${_prefix}_CFLAGS_OTHER)
- _pkgconfig_unset(${_prefix}_STATIC_LIBDIR)
- _pkgconfig_unset(${_prefix}_STATIC_LIBS)
- _pkgconfig_unset(${_prefix}_STATIC_LIBS_L)
- _pkgconfig_unset(${_prefix}_STATIC_LIBS_PATHS)
- _pkgconfig_unset(${_prefix}_STATIC_LIBS_OTHER)
- _pkgconfig_unset(${_prefix}_STATIC_CFLAGS)
- _pkgconfig_unset(${_prefix}_STATIC_CFLAGS_I)
- _pkgconfig_unset(${_prefix}_STATIC_CFLAGS_OTHER)
-
- # create a better addressable variable of the modules and calculate its size
- set(_pkg_check_modules_list ${ARGN})
- list(LENGTH _pkg_check_modules_list _pkg_check_modules_cnt)
-
- if(PKG_CONFIG_EXECUTABLE)
- # give out status message telling checked module
- if (NOT ${_is_silent})
- if (_pkg_check_modules_cnt EQUAL 1)
- message(STATUS "checking for module '${_pkg_check_modules_list}'")
- else()
- message(STATUS "checking for modules '${_pkg_check_modules_list}'")
- endif()
- endif()
-
- set(_pkg_check_modules_packages)
- set(_pkg_check_modules_failed)
-
- set(_extra_paths)
-
- if(NOT _no_cmake_path)
- _pkgconfig_add_extra_path(_extra_paths CMAKE_PREFIX_PATH)
- _pkgconfig_add_extra_path(_extra_paths CMAKE_FRAMEWORK_PATH)
- _pkgconfig_add_extra_path(_extra_paths CMAKE_APPBUNDLE_PATH)
- endif()
-
- if(NOT _no_cmake_environment_path)
- _pkgconfig_add_extra_path(_extra_paths ENV CMAKE_PREFIX_PATH)
- _pkgconfig_add_extra_path(_extra_paths ENV CMAKE_FRAMEWORK_PATH)
- _pkgconfig_add_extra_path(_extra_paths ENV CMAKE_APPBUNDLE_PATH)
- endif()
-
- if(NOT "${_extra_paths}" STREQUAL "")
- # Save the PKG_CONFIG_PATH environment variable, and add paths
- # from the CMAKE_PREFIX_PATH variables
- set(_pkgconfig_path_old $ENV{PKG_CONFIG_PATH})
- set(_pkgconfig_path ${_pkgconfig_path_old})
- if(NOT "${_pkgconfig_path}" STREQUAL "")
- file(TO_CMAKE_PATH "${_pkgconfig_path}" _pkgconfig_path)
- endif()
-
- # Create a list of the possible pkgconfig subfolder (depending on
- # the system
- set(_lib_dirs)
- if(NOT DEFINED CMAKE_SYSTEM_NAME
- OR (CMAKE_SYSTEM_NAME MATCHES "^(Linux|kFreeBSD|GNU)$"
- AND NOT CMAKE_CROSSCOMPILING))
- if(EXISTS "/etc/debian_version") # is this a debian system ?
- if(CMAKE_LIBRARY_ARCHITECTURE)
- list(APPEND _lib_dirs "lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig")
- endif()
- else()
- # not debian, chech the FIND_LIBRARY_USE_LIB64_PATHS property
- get_property(uselib64 GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS)
- if(uselib64)
- list(APPEND _lib_dirs "lib64/pkgconfig")
- endif()
- endif()
- endif()
- list(APPEND _lib_dirs "lib/pkgconfig")
-
- # Check if directories exist and eventually append them to the
- # pkgconfig path list
- foreach(_prefix_dir ${_extra_paths})
- foreach(_lib_dir ${_lib_dirs})
- if(EXISTS "${_prefix_dir}/${_lib_dir}")
- list(APPEND _pkgconfig_path "${_prefix_dir}/${_lib_dir}")
- list(REMOVE_DUPLICATES _pkgconfig_path)
- endif()
- endforeach()
- endforeach()
-
- # Prepare and set the environment variable
- if(NOT "${_pkgconfig_path}" STREQUAL "")
- # remove empty values from the list
- list(REMOVE_ITEM _pkgconfig_path "")
- file(TO_NATIVE_PATH "${_pkgconfig_path}" _pkgconfig_path)
- if(UNIX)
- string(REPLACE ";" ":" _pkgconfig_path "${_pkgconfig_path}")
- string(REPLACE "\\ " " " _pkgconfig_path "${_pkgconfig_path}")
- endif()
- set(ENV{PKG_CONFIG_PATH} ${_pkgconfig_path})
- endif()
-
- # Unset variables
- unset(_lib_dirs)
- unset(_pkgconfig_path)
- endif()
-
- # iterate through module list and check whether they exist and match the required version
- foreach (_pkg_check_modules_pkg ${_pkg_check_modules_list})
- set(_pkg_check_modules_exist_query)
-
- # check whether version is given
- if (_pkg_check_modules_pkg MATCHES "(.*[^><])(>=|=|<=)(.*)")
- set(_pkg_check_modules_pkg_name "${CMAKE_MATCH_1}")
- set(_pkg_check_modules_pkg_op "${CMAKE_MATCH_2}")
- set(_pkg_check_modules_pkg_ver "${CMAKE_MATCH_3}")
- else()
- set(_pkg_check_modules_pkg_name "${_pkg_check_modules_pkg}")
- set(_pkg_check_modules_pkg_op)
- set(_pkg_check_modules_pkg_ver)
- endif()
-
- # handle the operands
- if (_pkg_check_modules_pkg_op STREQUAL ">=")
- list(APPEND _pkg_check_modules_exist_query --atleast-version)
- endif()
-
- if (_pkg_check_modules_pkg_op STREQUAL "=")
- list(APPEND _pkg_check_modules_exist_query --exact-version)
- endif()
-
- if (_pkg_check_modules_pkg_op STREQUAL "<=")
- list(APPEND _pkg_check_modules_exist_query --max-version)
- endif()
-
- # create the final query which is of the format:
- # * --atleast-version <version> <pkg-name>
- # * --exact-version <version> <pkg-name>
- # * --max-version <version> <pkg-name>
- # * --exists <pkg-name>
- if (_pkg_check_modules_pkg_op)
- list(APPEND _pkg_check_modules_exist_query "${_pkg_check_modules_pkg_ver}")
- else()
- list(APPEND _pkg_check_modules_exist_query --exists)
- endif()
-
- _pkgconfig_unset(${_prefix}_${_pkg_check_modules_pkg_name}_VERSION)
- _pkgconfig_unset(${_prefix}_${_pkg_check_modules_pkg_name}_PREFIX)
- _pkgconfig_unset(${_prefix}_${_pkg_check_modules_pkg_name}_INCLUDEDIR)
- _pkgconfig_unset(${_prefix}_${_pkg_check_modules_pkg_name}_LIBDIR)
-
- list(APPEND _pkg_check_modules_exist_query "${_pkg_check_modules_pkg_name}")
- list(APPEND _pkg_check_modules_packages "${_pkg_check_modules_pkg_name}")
-
- # execute the query
- execute_process(
- COMMAND ${PKG_CONFIG_EXECUTABLE} ${_pkg_check_modules_exist_query}
- RESULT_VARIABLE _pkgconfig_retval)
-
- # evaluate result and tell failures
- if (_pkgconfig_retval)
- if(NOT ${_is_silent})
- message(STATUS " package '${_pkg_check_modules_pkg}' not found")
- endif()
-
- set(_pkg_check_modules_failed 1)
- endif()
- endforeach()
-
- if(_pkg_check_modules_failed)
- # fail when requested
- if (${_is_required})
- message(FATAL_ERROR "A required package was not found")
- endif ()
- else()
- # when we are here, we checked whether requested modules
- # exist. Now, go through them and set variables
-
- _pkgconfig_set(${_prefix}_FOUND 1)
- list(LENGTH _pkg_check_modules_packages pkg_count)
-
- # iterate through all modules again and set individual variables
- foreach (_pkg_check_modules_pkg ${_pkg_check_modules_packages})
- # handle case when there is only one package required
- if (pkg_count EQUAL 1)
- set(_pkg_check_prefix "${_prefix}")
- else()
- set(_pkg_check_prefix "${_prefix}_${_pkg_check_modules_pkg}")
- endif()
-
- _pkgconfig_invoke(${_pkg_check_modules_pkg} "${_pkg_check_prefix}" VERSION "" --modversion )
- _pkgconfig_invoke(${_pkg_check_modules_pkg} "${_pkg_check_prefix}" PREFIX "" --variable=prefix )
- _pkgconfig_invoke(${_pkg_check_modules_pkg} "${_pkg_check_prefix}" INCLUDEDIR "" --variable=includedir )
- _pkgconfig_invoke(${_pkg_check_modules_pkg} "${_pkg_check_prefix}" LIBDIR "" --variable=libdir )
-
- if (NOT ${_is_silent})
- message(STATUS " found ${_pkg_check_modules_pkg}, version ${_pkgconfig_VERSION}")
- endif ()
- endforeach()
-
- # set variables which are combined for multiple modules
- _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" LIBRARIES "(^| )-l" --libs-only-l )
- _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" LIBRARY_DIRS "(^| )-L" --libs-only-L )
- _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" LDFLAGS "" --libs )
- _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" LDFLAGS_OTHER "" --libs-only-other )
-
- _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" INCLUDE_DIRS "(^| )-I" --cflags-only-I )
- _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" CFLAGS "" --cflags )
- _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" CFLAGS_OTHER "" --cflags-only-other )
- endif()
-
- if(NOT "${_extra_paths}" STREQUAL "")
- # Restore the environment variable
- set(ENV{PKG_CONFIG_PATH} ${_pkgconfig_path})
- endif()
-
- unset(_extra_paths)
- unset(_pkgconfig_path_old)
- else()
- if (${_is_required})
- message(SEND_ERROR "pkg-config tool not found")
- endif ()
- endif()
-endmacro()
-
-###
-### User visible macros start here
-###
-
-#[========================================[.rst:
-.. command:: pkg_check_modules
-
- Checks for all the given modules. ::
-
- pkg_check_modules(<PREFIX> [REQUIRED] [QUIET]
- [NO_CMAKE_PATH] [NO_CMAKE_ENVIRONMENT_PATH]
- <MODULE> [<MODULE>]*)
-
-
- When the ``REQUIRED`` argument was set, macros will fail with an error
- when module(s) could not be found.
-
- When the ``QUIET`` argument is set, no status messages will be printed.
-
- By default, if :variable:`CMAKE_MINIMUM_REQUIRED_VERSION` is 3.1 or
- later, or if :variable:`PKG_CONFIG_USE_CMAKE_PREFIX_PATH` is set, the
- :variable:`CMAKE_PREFIX_PATH`, :variable:`CMAKE_FRAMEWORK_PATH`, and
- :variable:`CMAKE_APPBUNDLE_PATH` cache and environment variables will
- be added to ``pkg-config`` search path.
- The ``NO_CMAKE_PATH`` and ``NO_CMAKE_ENVIRONMENT_PATH`` arguments
- disable this behavior for the cache variables and the environment
- variables, respectively.
-
- It sets the following variables: ::
-
- PKG_CONFIG_FOUND ... if pkg-config executable was found
- PKG_CONFIG_EXECUTABLE ... pathname of the pkg-config program
- PKG_CONFIG_VERSION_STRING ... the version of the pkg-config program found
- (since CMake 2.8.8)
-
- For the following variables two sets of values exist; first one is the
- common one and has the given PREFIX. The second set contains flags
- which are given out when ``pkg-config`` was called with the ``--static``
- option. ::
-
- <XPREFIX>_FOUND ... set to 1 if module(s) exist
- <XPREFIX>_LIBRARIES ... only the libraries (w/o the '-l')
- <XPREFIX>_LIBRARY_DIRS ... the paths of the libraries (w/o the '-L')
- <XPREFIX>_LDFLAGS ... all required linker flags
- <XPREFIX>_LDFLAGS_OTHER ... all other linker flags
- <XPREFIX>_INCLUDE_DIRS ... the '-I' preprocessor flags (w/o the '-I')
- <XPREFIX>_CFLAGS ... all required cflags
- <XPREFIX>_CFLAGS_OTHER ... the other compiler flags
-
- ::
-
- <XPREFIX> = <PREFIX> for common case
- <XPREFIX> = <PREFIX>_STATIC for static linking
-
- There are some special variables whose prefix depends on the count of
- given modules. When there is only one module, <PREFIX> stays
- unchanged. When there are multiple modules, the prefix will be
- changed to <PREFIX>_<MODNAME>: ::
-
- <XPREFIX>_VERSION ... version of the module
- <XPREFIX>_PREFIX ... prefix-directory of the module
- <XPREFIX>_INCLUDEDIR ... include-dir of the module
- <XPREFIX>_LIBDIR ... lib-dir of the module
-
- ::
-
- <XPREFIX> = <PREFIX> when |MODULES| == 1, else
- <XPREFIX> = <PREFIX>_<MODNAME>
-
- A <MODULE> parameter can have the following formats: ::
-
- {MODNAME} ... matches any version
- {MODNAME}>={VERSION} ... at least version <VERSION> is required
- {MODNAME}={VERSION} ... exactly version <VERSION> is required
- {MODNAME}<={VERSION} ... modules must not be newer than <VERSION>
-
- Examples
-
- .. code-block:: cmake
-
- pkg_check_modules (GLIB2 glib-2.0)
-
- .. code-block:: cmake
-
- pkg_check_modules (GLIB2 glib-2.0>=2.10)
-
- Requires at least version 2.10 of glib2 and defines e.g.
- ``GLIB2_VERSION=2.10.3``
-
- .. code-block:: cmake
-
- pkg_check_modules (FOO glib-2.0>=2.10 gtk+-2.0)
-
- Requires both glib2 and gtk2, and defines e.g.
- ``FOO_glib-2.0_VERSION=2.10.3`` and ``FOO_gtk+-2.0_VERSION=2.8.20``
-
- .. code-block:: cmake
-
- pkg_check_modules (XRENDER REQUIRED xrender)
-
- Defines for example::
-
- XRENDER_LIBRARIES=Xrender;X11``
- XRENDER_STATIC_LIBRARIES=Xrender;X11;pthread;Xau;Xdmcp
-#]========================================]
-macro(pkg_check_modules _prefix _module0)
- # check cached value
- if (NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION} OR NOT ${_prefix}_FOUND)
- _pkgconfig_parse_options (_pkg_modules _pkg_is_required _pkg_is_silent _no_cmake_path _no_cmake_environment_path "${_module0}" ${ARGN})
- _pkg_check_modules_internal("${_pkg_is_required}" "${_pkg_is_silent}" ${_no_cmake_path} ${_no_cmake_environment_path} "${_prefix}" ${_pkg_modules})
-
- _pkgconfig_set(__pkg_config_checked_${_prefix} ${PKG_CONFIG_VERSION})
- endif()
-endmacro()
-
-
-#[========================================[.rst:
-.. command:: pkg_search_module
-
- Same as :command:`pkg_check_modules`, but instead it checks for given
- modules and uses the first working one. ::
-
- pkg_search_module(<PREFIX> [REQUIRED] [QUIET]
- [NO_CMAKE_PATH] [NO_CMAKE_ENVIRONMENT_PATH]
- <MODULE> [<MODULE>]*)
-
- Examples
-
- .. code-block:: cmake
-
- pkg_search_module (BAR libxml-2.0 libxml2 libxml>=2)
-#]========================================]
-macro(pkg_search_module _prefix _module0)
- # check cached value
- if (NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION} OR NOT ${_prefix}_FOUND)
- set(_pkg_modules_found 0)
- _pkgconfig_parse_options(_pkg_modules_alt _pkg_is_required _pkg_is_silent _no_cmake_path _no_cmake_environment_path "${_module0}" ${ARGN})
-
- if (NOT ${_pkg_is_silent})
- message(STATUS "checking for one of the modules '${_pkg_modules_alt}'")
- endif ()
-
- # iterate through all modules and stop at the first working one.
- foreach(_pkg_alt ${_pkg_modules_alt})
- if(NOT _pkg_modules_found)
- _pkg_check_modules_internal(0 1 ${_no_cmake_path} ${_no_cmake_environment_path} "${_prefix}" "${_pkg_alt}")
- endif()
-
- if (${_prefix}_FOUND)
- set(_pkg_modules_found 1)
- endif()
- endforeach()
-
- if (NOT ${_prefix}_FOUND)
- if(${_pkg_is_required})
- message(SEND_ERROR "None of the required '${_pkg_modules_alt}' found")
- endif()
- endif()
-
- _pkgconfig_set(__pkg_config_checked_${_prefix} ${PKG_CONFIG_VERSION})
- endif()
-endmacro()
-
-
-#[========================================[.rst:
-.. variable:: PKG_CONFIG_EXECUTABLE
-
- Path to the pkg-config executable.
-
-
-.. variable:: PKG_CONFIG_USE_CMAKE_PREFIX_PATH
-
- Whether :command:`pkg_check_modules` and :command:`pkg_search_module`
- should add the paths in :variable:`CMAKE_PREFIX_PATH`,
- :variable:`CMAKE_FRAMEWORK_PATH`, and :variable:`CMAKE_APPBUNDLE_PATH`
- cache and environment variables to ``pkg-config`` search path.
-
- If this variable is not set, this behavior is enabled by default if
- :variable:`CMAKE_MINIMUM_REQUIRED_VERSION` is 3.1 or later, disabled
- otherwise.
-#]========================================]
-
-
-### Local Variables:
-### mode: cmake
-### End: