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Diffstat (limited to 'share/cmake-3.2/Modules/FindPkgConfig.cmake')
| -rw-r--r-- | share/cmake-3.2/Modules/FindPkgConfig.cmake | 578 |
1 files changed, 578 insertions, 0 deletions
diff --git a/share/cmake-3.2/Modules/FindPkgConfig.cmake b/share/cmake-3.2/Modules/FindPkgConfig.cmake new file mode 100644 index 0000000..bf58ede --- /dev/null +++ b/share/cmake-3.2/Modules/FindPkgConfig.cmake @@ -0,0 +1,578 @@ +#.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 Grüninger <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: |