mirror of
https://github.com/reactos/CMake.git
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739 lines
27 KiB
CMake
739 lines
27 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#[========================================[.rst:
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FindPkgConfig
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-------------
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A ``pkg-config`` module for CMake.
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Finds the ``pkg-config`` executable and adds the :command:`pkg_get_variable`,
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:command:`pkg_check_modules` and :command:`pkg_search_module` commands. The
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following variables will also be set:
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``PKG_CONFIG_FOUND``
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if pkg-config executable was found
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``PKG_CONFIG_EXECUTABLE``
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pathname of the pkg-config program
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``PKG_CONFIG_VERSION_STRING``
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version of pkg-config (since CMake 2.8.8)
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#]========================================]
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### Common stuff ####
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set(PKG_CONFIG_VERSION 1)
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# find pkg-config, use PKG_CONFIG if set
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if((NOT PKG_CONFIG_EXECUTABLE) AND (NOT "$ENV{PKG_CONFIG}" STREQUAL ""))
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set(PKG_CONFIG_EXECUTABLE "$ENV{PKG_CONFIG}" CACHE FILEPATH "pkg-config executable")
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endif()
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find_program(PKG_CONFIG_EXECUTABLE NAMES pkg-config DOC "pkg-config executable")
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mark_as_advanced(PKG_CONFIG_EXECUTABLE)
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if (PKG_CONFIG_EXECUTABLE)
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execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --version
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OUTPUT_VARIABLE PKG_CONFIG_VERSION_STRING
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ERROR_QUIET
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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endif ()
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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find_package_handle_standard_args(PkgConfig
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REQUIRED_VARS PKG_CONFIG_EXECUTABLE
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VERSION_VAR PKG_CONFIG_VERSION_STRING)
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# This is needed because the module name is "PkgConfig" but the name of
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# this variable has always been PKG_CONFIG_FOUND so this isn't automatically
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# handled by FPHSA.
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set(PKG_CONFIG_FOUND "${PKGCONFIG_FOUND}")
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# Unsets the given variables
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macro(_pkgconfig_unset var)
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set(${var} "" CACHE INTERNAL "")
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endmacro()
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macro(_pkgconfig_set var value)
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set(${var} ${value} CACHE INTERNAL "")
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endmacro()
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# Invokes pkgconfig, cleans up the result and sets variables
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macro(_pkgconfig_invoke _pkglist _prefix _varname _regexp)
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set(_pkgconfig_invoke_result)
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execute_process(
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COMMAND ${PKG_CONFIG_EXECUTABLE} ${ARGN} ${_pkglist}
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OUTPUT_VARIABLE _pkgconfig_invoke_result
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RESULT_VARIABLE _pkgconfig_failed
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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if (_pkgconfig_failed)
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set(_pkgconfig_${_varname} "")
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_pkgconfig_unset(${_prefix}_${_varname})
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else()
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string(REGEX REPLACE "[\r\n]" " " _pkgconfig_invoke_result "${_pkgconfig_invoke_result}")
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if (NOT ${_regexp} STREQUAL "")
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string(REGEX REPLACE "${_regexp}" " " _pkgconfig_invoke_result "${_pkgconfig_invoke_result}")
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endif()
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separate_arguments(_pkgconfig_invoke_result)
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#message(STATUS " ${_varname} ... ${_pkgconfig_invoke_result}")
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set(_pkgconfig_${_varname} ${_pkgconfig_invoke_result})
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_pkgconfig_set(${_prefix}_${_varname} "${_pkgconfig_invoke_result}")
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endif()
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endmacro()
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#[========================================[.rst:
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.. command:: pkg_get_variable
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Retrieves the value of a pkg-config variable ``varName`` and stores it in the
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result variable ``resultVar`` in the calling scope.
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.. code-block:: cmake
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pkg_get_variable(<resultVar> <moduleName> <varName>)
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If ``pkg-config`` returns multiple values for the specified variable,
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``resultVar`` will contain a :ref:`;-list <CMake Language Lists>`.
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For example:
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.. code-block:: cmake
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pkg_get_variable(GI_GIRDIR gobject-introspection-1.0 girdir)
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#]========================================]
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function (pkg_get_variable result pkg variable)
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_pkgconfig_invoke("${pkg}" "prefix" "result" "" "--variable=${variable}")
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set("${result}"
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"${prefix_result}"
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PARENT_SCOPE)
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endfunction ()
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# Invokes pkgconfig two times; once without '--static' and once with
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# '--static'
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macro(_pkgconfig_invoke_dyn _pkglist _prefix _varname cleanup_regexp)
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_pkgconfig_invoke("${_pkglist}" ${_prefix} ${_varname} "${cleanup_regexp}" ${ARGN})
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_pkgconfig_invoke("${_pkglist}" ${_prefix} STATIC_${_varname} "${cleanup_regexp}" --static ${ARGN})
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endmacro()
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# Splits given arguments into options and a package list
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macro(_pkgconfig_parse_options _result _is_req _is_silent _no_cmake_path _no_cmake_environment_path _imp_target _imp_target_global)
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set(${_is_req} 0)
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set(${_is_silent} 0)
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set(${_no_cmake_path} 0)
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set(${_no_cmake_environment_path} 0)
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set(${_imp_target} 0)
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set(${_imp_target_global} 0)
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if(DEFINED PKG_CONFIG_USE_CMAKE_PREFIX_PATH)
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if(NOT PKG_CONFIG_USE_CMAKE_PREFIX_PATH)
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set(${_no_cmake_path} 1)
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set(${_no_cmake_environment_path} 1)
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endif()
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elseif(CMAKE_MINIMUM_REQUIRED_VERSION VERSION_LESS 3.1)
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set(${_no_cmake_path} 1)
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set(${_no_cmake_environment_path} 1)
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endif()
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foreach(_pkg ${ARGN})
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if (_pkg STREQUAL "REQUIRED")
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set(${_is_req} 1)
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endif ()
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if (_pkg STREQUAL "QUIET")
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set(${_is_silent} 1)
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endif ()
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if (_pkg STREQUAL "NO_CMAKE_PATH")
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set(${_no_cmake_path} 1)
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endif()
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if (_pkg STREQUAL "NO_CMAKE_ENVIRONMENT_PATH")
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set(${_no_cmake_environment_path} 1)
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endif()
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if (_pkg STREQUAL "IMPORTED_TARGET")
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set(${_imp_target} 1)
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endif()
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if (_pkg STREQUAL "GLOBAL")
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set(${_imp_target_global} 1)
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endif()
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endforeach()
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if (${_imp_target_global} AND NOT ${_imp_target})
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message(SEND_ERROR "the argument GLOBAL may only be used together with IMPORTED_TARGET")
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endif()
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set(${_result} ${ARGN})
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list(REMOVE_ITEM ${_result} "REQUIRED")
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list(REMOVE_ITEM ${_result} "QUIET")
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list(REMOVE_ITEM ${_result} "NO_CMAKE_PATH")
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list(REMOVE_ITEM ${_result} "NO_CMAKE_ENVIRONMENT_PATH")
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list(REMOVE_ITEM ${_result} "IMPORTED_TARGET")
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list(REMOVE_ITEM ${_result} "GLOBAL")
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endmacro()
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# Add the content of a variable or an environment variable to a list of
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# paths
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# Usage:
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# - _pkgconfig_add_extra_path(_extra_paths VAR)
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# - _pkgconfig_add_extra_path(_extra_paths ENV VAR)
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function(_pkgconfig_add_extra_path _extra_paths_var _var)
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set(_is_env 0)
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if(ARGC GREATER 2 AND _var STREQUAL "ENV")
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set(_var ${ARGV2})
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set(_is_env 1)
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endif()
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if(NOT _is_env)
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if(NOT "${${_var}}" STREQUAL "")
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list(APPEND ${_extra_paths_var} ${${_var}})
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endif()
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else()
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if(NOT "$ENV{${_var}}" STREQUAL "")
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file(TO_CMAKE_PATH "$ENV{${_var}}" _path)
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list(APPEND ${_extra_paths_var} ${_path})
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unset(_path)
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endif()
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endif()
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set(${_extra_paths_var} ${${_extra_paths_var}} PARENT_SCOPE)
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endfunction()
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# scan the LDFLAGS returned by pkg-config for library directories and
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# libraries, figure out the absolute paths of that libraries in the
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# given directories
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function(_pkg_find_libs _prefix _no_cmake_path _no_cmake_environment_path)
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unset(_libs)
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unset(_find_opts)
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# set the options that are used as long as the .pc file does not provide a library
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# path to look into
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if(_no_cmake_path)
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list(APPEND _find_opts "NO_CMAKE_PATH")
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endif()
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if(_no_cmake_environment_path)
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list(APPEND _find_opts "NO_CMAKE_ENVIRONMENT_PATH")
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endif()
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unset(_search_paths)
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foreach (flag IN LISTS ${_prefix}_LDFLAGS)
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if (flag MATCHES "^-L(.*)")
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list(APPEND _search_paths ${CMAKE_MATCH_1})
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continue()
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endif()
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if (flag MATCHES "^-l(.*)")
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set(_pkg_search "${CMAKE_MATCH_1}")
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else()
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continue()
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endif()
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if(_search_paths)
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# Firstly search in -L paths
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find_library(pkgcfg_lib_${_prefix}_${_pkg_search}
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NAMES ${_pkg_search}
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HINTS ${_search_paths} NO_DEFAULT_PATH)
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endif()
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find_library(pkgcfg_lib_${_prefix}_${_pkg_search}
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NAMES ${_pkg_search}
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${_find_opts})
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mark_as_advanced(pkgcfg_lib_${_prefix}_${_pkg_search})
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list(APPEND _libs "${pkgcfg_lib_${_prefix}_${_pkg_search}}")
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endforeach()
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set(${_prefix}_LINK_LIBRARIES "${_libs}" PARENT_SCOPE)
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endfunction()
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# create an imported target from all the information returned by pkg-config
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function(_pkg_create_imp_target _prefix _imp_target_global)
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# only create the target if it is linkable, i.e. no executables
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if (NOT TARGET PkgConfig::${_prefix}
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AND ( ${_prefix}_INCLUDE_DIRS OR ${_prefix}_LINK_LIBRARIES OR ${_prefix}_CFLAGS_OTHER ))
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if(${_imp_target_global})
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set(_global_opt "GLOBAL")
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else()
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unset(_global_opt)
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endif()
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add_library(PkgConfig::${_prefix} INTERFACE IMPORTED ${_global_opt})
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if(${_prefix}_INCLUDE_DIRS)
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set_property(TARGET PkgConfig::${_prefix} PROPERTY
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INTERFACE_INCLUDE_DIRECTORIES "${${_prefix}_INCLUDE_DIRS}")
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endif()
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if(${_prefix}_LINK_LIBRARIES)
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set_property(TARGET PkgConfig::${_prefix} PROPERTY
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INTERFACE_LINK_LIBRARIES "${${_prefix}_LINK_LIBRARIES}")
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endif()
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if(${_prefix}_CFLAGS_OTHER)
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set_property(TARGET PkgConfig::${_prefix} PROPERTY
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INTERFACE_COMPILE_OPTIONS "${${_prefix}_CFLAGS_OTHER}")
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endif()
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endif()
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endfunction()
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# recalculate the dynamic output
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# this is a macro and not a function so the result of _pkg_find_libs is automatically propagated
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macro(_pkg_recalculate _prefix _no_cmake_path _no_cmake_environment_path _imp_target _imp_target_global)
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_pkg_find_libs(${_prefix} ${_no_cmake_path} ${_no_cmake_environment_path})
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if(${_imp_target})
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_pkg_create_imp_target(${_prefix} ${_imp_target_global})
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endif()
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endmacro()
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###
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macro(_pkg_check_modules_internal _is_required _is_silent _no_cmake_path _no_cmake_environment_path _imp_target _imp_target_global _prefix)
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_pkgconfig_unset(${_prefix}_FOUND)
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_pkgconfig_unset(${_prefix}_VERSION)
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_pkgconfig_unset(${_prefix}_PREFIX)
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_pkgconfig_unset(${_prefix}_INCLUDEDIR)
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_pkgconfig_unset(${_prefix}_LIBDIR)
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_pkgconfig_unset(${_prefix}_LIBS)
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_pkgconfig_unset(${_prefix}_LIBS_L)
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_pkgconfig_unset(${_prefix}_LIBS_PATHS)
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_pkgconfig_unset(${_prefix}_LIBS_OTHER)
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_pkgconfig_unset(${_prefix}_CFLAGS)
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_pkgconfig_unset(${_prefix}_CFLAGS_I)
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_pkgconfig_unset(${_prefix}_CFLAGS_OTHER)
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_pkgconfig_unset(${_prefix}_STATIC_LIBDIR)
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_pkgconfig_unset(${_prefix}_STATIC_LIBS)
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_pkgconfig_unset(${_prefix}_STATIC_LIBS_L)
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_pkgconfig_unset(${_prefix}_STATIC_LIBS_PATHS)
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_pkgconfig_unset(${_prefix}_STATIC_LIBS_OTHER)
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_pkgconfig_unset(${_prefix}_STATIC_CFLAGS)
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_pkgconfig_unset(${_prefix}_STATIC_CFLAGS_I)
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_pkgconfig_unset(${_prefix}_STATIC_CFLAGS_OTHER)
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# create a better addressable variable of the modules and calculate its size
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set(_pkg_check_modules_list ${ARGN})
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list(LENGTH _pkg_check_modules_list _pkg_check_modules_cnt)
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if(PKG_CONFIG_EXECUTABLE)
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# give out status message telling checked module
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if (NOT ${_is_silent})
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if (_pkg_check_modules_cnt EQUAL 1)
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message(STATUS "Checking for module '${_pkg_check_modules_list}'")
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else()
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message(STATUS "Checking for modules '${_pkg_check_modules_list}'")
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endif()
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endif()
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set(_pkg_check_modules_packages)
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set(_pkg_check_modules_failed)
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set(_extra_paths)
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if(NOT _no_cmake_path)
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_pkgconfig_add_extra_path(_extra_paths CMAKE_PREFIX_PATH)
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_pkgconfig_add_extra_path(_extra_paths CMAKE_FRAMEWORK_PATH)
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_pkgconfig_add_extra_path(_extra_paths CMAKE_APPBUNDLE_PATH)
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endif()
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if(NOT _no_cmake_environment_path)
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_pkgconfig_add_extra_path(_extra_paths ENV CMAKE_PREFIX_PATH)
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_pkgconfig_add_extra_path(_extra_paths ENV CMAKE_FRAMEWORK_PATH)
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_pkgconfig_add_extra_path(_extra_paths ENV CMAKE_APPBUNDLE_PATH)
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endif()
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if(NOT "${_extra_paths}" STREQUAL "")
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# Save the PKG_CONFIG_PATH environment variable, and add paths
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# from the CMAKE_PREFIX_PATH variables
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set(_pkgconfig_path_old "$ENV{PKG_CONFIG_PATH}")
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set(_pkgconfig_path "${_pkgconfig_path_old}")
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if(NOT "${_pkgconfig_path}" STREQUAL "")
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file(TO_CMAKE_PATH "${_pkgconfig_path}" _pkgconfig_path)
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endif()
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# Create a list of the possible pkgconfig subfolder (depending on
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# the system
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set(_lib_dirs)
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if(NOT DEFINED CMAKE_SYSTEM_NAME
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OR (CMAKE_SYSTEM_NAME MATCHES "^(Linux|kFreeBSD|GNU)$"
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AND NOT CMAKE_CROSSCOMPILING))
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if(EXISTS "/etc/debian_version") # is this a debian system ?
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if(CMAKE_LIBRARY_ARCHITECTURE)
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list(APPEND _lib_dirs "lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig")
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endif()
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else()
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# not debian, check the FIND_LIBRARY_USE_LIB32_PATHS and FIND_LIBRARY_USE_LIB64_PATHS properties
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get_property(uselib32 GLOBAL PROPERTY FIND_LIBRARY_USE_LIB32_PATHS)
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if(uselib32 AND CMAKE_SIZEOF_VOID_P EQUAL 4)
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list(APPEND _lib_dirs "lib32/pkgconfig")
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endif()
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get_property(uselib64 GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS)
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if(uselib64 AND CMAKE_SIZEOF_VOID_P EQUAL 8)
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list(APPEND _lib_dirs "lib64/pkgconfig")
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endif()
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get_property(uselibx32 GLOBAL PROPERTY FIND_LIBRARY_USE_LIBX32_PATHS)
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if(uselibx32 AND CMAKE_INTERNAL_PLATFORM_ABI STREQUAL "ELF X32")
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list(APPEND _lib_dirs "libx32/pkgconfig")
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endif()
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endif()
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endif()
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if(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" AND NOT CMAKE_CROSSCOMPILING)
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list(APPEND _lib_dirs "libdata/pkgconfig")
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endif()
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list(APPEND _lib_dirs "lib/pkgconfig")
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list(APPEND _lib_dirs "share/pkgconfig")
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# Check if directories exist and eventually append them to the
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# pkgconfig path list
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foreach(_prefix_dir ${_extra_paths})
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foreach(_lib_dir ${_lib_dirs})
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if(EXISTS "${_prefix_dir}/${_lib_dir}")
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list(APPEND _pkgconfig_path "${_prefix_dir}/${_lib_dir}")
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list(REMOVE_DUPLICATES _pkgconfig_path)
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endif()
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endforeach()
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endforeach()
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# Prepare and set the environment variable
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if(NOT "${_pkgconfig_path}" STREQUAL "")
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# remove empty values from the list
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list(REMOVE_ITEM _pkgconfig_path "")
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file(TO_NATIVE_PATH "${_pkgconfig_path}" _pkgconfig_path)
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if(UNIX)
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string(REPLACE ";" ":" _pkgconfig_path "${_pkgconfig_path}")
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string(REPLACE "\\ " " " _pkgconfig_path "${_pkgconfig_path}")
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endif()
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set(ENV{PKG_CONFIG_PATH} "${_pkgconfig_path}")
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endif()
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# Unset variables
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unset(_lib_dirs)
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unset(_pkgconfig_path)
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endif()
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# iterate through module list and check whether they exist and match the required version
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foreach (_pkg_check_modules_pkg ${_pkg_check_modules_list})
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set(_pkg_check_modules_exist_query)
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# check whether version is given
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if (_pkg_check_modules_pkg MATCHES "(.*[^><])(=|[><]=?)(.*)")
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set(_pkg_check_modules_pkg_name "${CMAKE_MATCH_1}")
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set(_pkg_check_modules_pkg_op "${CMAKE_MATCH_2}")
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set(_pkg_check_modules_pkg_ver "${CMAKE_MATCH_3}")
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else()
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set(_pkg_check_modules_pkg_name "${_pkg_check_modules_pkg}")
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set(_pkg_check_modules_pkg_op)
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set(_pkg_check_modules_pkg_ver)
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endif()
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_pkgconfig_unset(${_prefix}_${_pkg_check_modules_pkg_name}_VERSION)
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_pkgconfig_unset(${_prefix}_${_pkg_check_modules_pkg_name}_PREFIX)
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_pkgconfig_unset(${_prefix}_${_pkg_check_modules_pkg_name}_INCLUDEDIR)
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_pkgconfig_unset(${_prefix}_${_pkg_check_modules_pkg_name}_LIBDIR)
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list(APPEND _pkg_check_modules_packages "${_pkg_check_modules_pkg_name}")
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# create the final query which is of the format:
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# * <pkg-name> > <version>
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# * <pkg-name> >= <version>
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# * <pkg-name> = <version>
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# * <pkg-name> <= <version>
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# * <pkg-name> < <version>
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# * --exists <pkg-name>
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list(APPEND _pkg_check_modules_exist_query --print-errors --short-errors)
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if (_pkg_check_modules_pkg_op)
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list(APPEND _pkg_check_modules_exist_query "${_pkg_check_modules_pkg_name} ${_pkg_check_modules_pkg_op} ${_pkg_check_modules_pkg_ver}")
|
|
else()
|
|
list(APPEND _pkg_check_modules_exist_query --exists)
|
|
list(APPEND _pkg_check_modules_exist_query "${_pkg_check_modules_pkg_name}")
|
|
endif()
|
|
|
|
# execute the query
|
|
execute_process(
|
|
COMMAND ${PKG_CONFIG_EXECUTABLE} ${_pkg_check_modules_exist_query}
|
|
RESULT_VARIABLE _pkgconfig_retval
|
|
ERROR_VARIABLE _pkgconfig_error
|
|
ERROR_STRIP_TRAILING_WHITESPACE)
|
|
|
|
# evaluate result and tell failures
|
|
if (_pkgconfig_retval)
|
|
if(NOT ${_is_silent})
|
|
message(STATUS " ${_pkgconfig_error}")
|
|
endif()
|
|
|
|
set(_pkg_check_modules_failed 1)
|
|
endif()
|
|
endforeach()
|
|
|
|
if(_pkg_check_modules_failed)
|
|
# fail when requested
|
|
if (${_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 )
|
|
pkg_get_variable("${_pkg_check_prefix}_PREFIX" ${_pkg_check_modules_pkg} "prefix")
|
|
pkg_get_variable("${_pkg_check_prefix}_INCLUDEDIR" ${_pkg_check_modules_pkg} "includedir")
|
|
pkg_get_variable("${_pkg_check_prefix}_LIBDIR" ${_pkg_check_modules_pkg} "libdir")
|
|
foreach (variable IN ITEMS PREFIX INCLUDEDIR LIBDIR)
|
|
_pkgconfig_set("${_pkg_check_prefix}_${variable}" "${${_pkg_check_prefix}_${variable}}")
|
|
endforeach ()
|
|
|
|
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}" "${_prefix}" CFLAGS_OTHER "" --cflags-only-other )
|
|
|
|
_pkg_recalculate("${_prefix}" ${_no_cmake_path} ${_no_cmake_environment_path} ${_imp_target} ${_imp_target_global})
|
|
endif()
|
|
|
|
if(NOT "${_extra_paths}" STREQUAL "")
|
|
# Restore the environment variable
|
|
set(ENV{PKG_CONFIG_PATH} "${_pkgconfig_path_old}")
|
|
endif()
|
|
|
|
unset(_extra_paths)
|
|
unset(_pkgconfig_path_old)
|
|
else()
|
|
if (${_is_required})
|
|
message(SEND_ERROR "pkg-config tool not found")
|
|
endif ()
|
|
endif()
|
|
endmacro()
|
|
|
|
|
|
#[========================================[.rst:
|
|
.. command:: pkg_check_modules
|
|
|
|
Checks for all the given modules, setting a variety of result variables in
|
|
the calling scope.
|
|
|
|
.. code-block:: cmake
|
|
|
|
pkg_check_modules(<prefix>
|
|
[REQUIRED] [QUIET]
|
|
[NO_CMAKE_PATH]
|
|
[NO_CMAKE_ENVIRONMENT_PATH]
|
|
[IMPORTED_TARGET [GLOBAL]]
|
|
<moduleSpec> [<moduleSpec>...])
|
|
|
|
When the ``REQUIRED`` argument is given, the command will fail with an error
|
|
if module(s) could not be found.
|
|
|
|
When the ``QUIET`` argument is given, 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 to a
|
|
boolean ``True`` value, then the :variable:`CMAKE_PREFIX_PATH`,
|
|
:variable:`CMAKE_FRAMEWORK_PATH`, and :variable:`CMAKE_APPBUNDLE_PATH` cache
|
|
and environment variables will be added to the ``pkg-config`` search path.
|
|
The ``NO_CMAKE_PATH`` and ``NO_CMAKE_ENVIRONMENT_PATH`` arguments
|
|
disable this behavior for the cache variables and environment variables
|
|
respectively.
|
|
|
|
The ``IMPORTED_TARGET`` argument will create an imported target named
|
|
``PkgConfig::<prefix>`` that can be passed directly as an argument to
|
|
:command:`target_link_libraries`. The ``GLOBAL`` argument will make the
|
|
imported target available in global scope.
|
|
|
|
Each ``<moduleSpec>`` can be either a bare module name or it can be a
|
|
module name with a version constraint (operators ``=``, ``<``, ``>``,
|
|
``<=`` and ``>=`` are supported). The following are examples for a module
|
|
named ``foo`` with various constraints:
|
|
|
|
- ``foo`` matches any version.
|
|
- ``foo<2`` only matches versions before 2.
|
|
- ``foo>=3.1`` matches any version from 3.1 or later.
|
|
- ``foo=1.2.3`` requires that foo must be exactly version 1.2.3.
|
|
|
|
The following variables may be set upon return. Two sets of values exist:
|
|
One for the common case (``<XXX> = <prefix>``) and another for the
|
|
information ``pkg-config`` provides when called with the ``--static``
|
|
option (``<XXX> = <prefix>_STATIC``).
|
|
|
|
``<XXX>_FOUND``
|
|
set to 1 if module(s) exist
|
|
``<XXX>_LIBRARIES``
|
|
only the libraries (without the '-l')
|
|
``<XXX>_LINK_LIBRARIES``
|
|
the libraries and their absolute paths
|
|
``<XXX>_LIBRARY_DIRS``
|
|
the paths of the libraries (without the '-L')
|
|
``<XXX>_LDFLAGS``
|
|
all required linker flags
|
|
``<XXX>_LDFLAGS_OTHER``
|
|
all other linker flags
|
|
``<XXX>_INCLUDE_DIRS``
|
|
the '-I' preprocessor flags (without the '-I')
|
|
``<XXX>_CFLAGS``
|
|
all required cflags
|
|
``<XXX>_CFLAGS_OTHER``
|
|
the other compiler flags
|
|
|
|
All but ``<XXX>_FOUND`` may be a :ref:`;-list <CMake Language Lists>` if the
|
|
associated variable returned from ``pkg-config`` has multiple values.
|
|
|
|
There are some special variables whose prefix depends on the number of
|
|
``<moduleSpec>`` given. When there is only one ``<moduleSpec>``,
|
|
``<YYY>`` will simply be ``<prefix>``, but if two or more ``<moduleSpec>``
|
|
items are given, ``<YYY>`` will be ``<prefix>_<moduleName>``.
|
|
|
|
``<YYY>_VERSION``
|
|
version of the module
|
|
``<YYY>_PREFIX``
|
|
prefix directory of the module
|
|
``<YYY>_INCLUDEDIR``
|
|
include directory of the module
|
|
``<YYY>_LIBDIR``
|
|
lib directory of the module
|
|
|
|
Examples:
|
|
|
|
.. code-block:: cmake
|
|
|
|
pkg_check_modules (GLIB2 glib-2.0)
|
|
|
|
Looks for any version of glib2. If found, the output variable
|
|
``GLIB2_VERSION`` will hold the actual version found.
|
|
|
|
.. code-block:: cmake
|
|
|
|
pkg_check_modules (GLIB2 glib-2.0>=2.10)
|
|
|
|
Looks for at least version 2.10 of glib2. If found, the output variable
|
|
``GLIB2_VERSION`` will hold the actual version found.
|
|
|
|
.. code-block:: cmake
|
|
|
|
pkg_check_modules (FOO glib-2.0>=2.10 gtk+-2.0)
|
|
|
|
Looks for both glib2-2.0 (at least version 2.10) and any version of
|
|
gtk2+-2.0. Only if both are found will ``FOO`` be considered found.
|
|
The ``FOO_glib-2.0_VERSION`` and ``FOO_gtk+-2.0_VERSION`` variables will be
|
|
set to their respective found module versions.
|
|
|
|
.. code-block:: cmake
|
|
|
|
pkg_check_modules (XRENDER REQUIRED xrender)
|
|
|
|
Requires any version of ``xrender``. Example output variables set by a
|
|
successful call::
|
|
|
|
XRENDER_LIBRARIES=Xrender;X11
|
|
XRENDER_STATIC_LIBRARIES=Xrender;X11;pthread;Xau;Xdmcp
|
|
#]========================================]
|
|
macro(pkg_check_modules _prefix _module0)
|
|
_pkgconfig_parse_options(_pkg_modules _pkg_is_required _pkg_is_silent _no_cmake_path _no_cmake_environment_path _imp_target _imp_target_global "${_module0}" ${ARGN})
|
|
# check cached value
|
|
if (NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION} OR NOT ${_prefix}_FOUND OR
|
|
(NOT "${ARGN}" STREQUAL "" AND NOT "${__pkg_config_arguments_${_prefix}}" STREQUAL "${_module0};${ARGN}") OR
|
|
( "${ARGN}" STREQUAL "" AND NOT "${__pkg_config_arguments_${_prefix}}" STREQUAL "${_module0}"))
|
|
_pkg_check_modules_internal("${_pkg_is_required}" "${_pkg_is_silent}" ${_no_cmake_path} ${_no_cmake_environment_path} ${_imp_target} ${_imp_target_global} "${_prefix}" ${_pkg_modules})
|
|
|
|
_pkgconfig_set(__pkg_config_checked_${_prefix} ${PKG_CONFIG_VERSION})
|
|
if (${_prefix}_FOUND)
|
|
_pkgconfig_set(__pkg_config_arguments_${_prefix} "${_module0};${ARGN}")
|
|
endif()
|
|
else()
|
|
if (${_prefix}_FOUND)
|
|
_pkg_recalculate("${_prefix}" ${_no_cmake_path} ${_no_cmake_environment_path} ${_imp_target} ${_imp_target_global})
|
|
endif()
|
|
endif()
|
|
endmacro()
|
|
|
|
|
|
#[========================================[.rst:
|
|
.. command:: pkg_search_module
|
|
|
|
The behavior of this command is the same as :command:`pkg_check_modules`,
|
|
except that rather than checking for all the specified modules, it searches
|
|
for just the first successful match.
|
|
|
|
.. code-block:: cmake
|
|
|
|
pkg_search_module(<prefix>
|
|
[REQUIRED] [QUIET]
|
|
[NO_CMAKE_PATH]
|
|
[NO_CMAKE_ENVIRONMENT_PATH]
|
|
[IMPORTED_TARGET [GLOBAL]]
|
|
<moduleSpec> [<moduleSpec>...])
|
|
|
|
Example:
|
|
|
|
.. code-block:: cmake
|
|
|
|
pkg_search_module (BAR libxml-2.0 libxml2 libxml>=2)
|
|
#]========================================]
|
|
macro(pkg_search_module _prefix _module0)
|
|
_pkgconfig_parse_options(_pkg_modules_alt _pkg_is_required _pkg_is_silent _no_cmake_path _no_cmake_environment_path _imp_target _imp_target_global "${_module0}" ${ARGN})
|
|
# check cached value
|
|
if (NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION} OR NOT ${_prefix}_FOUND)
|
|
set(_pkg_modules_found 0)
|
|
|
|
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} ${_imp_target} ${_imp_target_global} "${_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} ${PKG_CONFIG_VERSION})
|
|
elseif (${_prefix}_FOUND)
|
|
_pkg_recalculate("${_prefix}" ${_no_cmake_path} ${_no_cmake_environment_path} ${_imp_target} ${_imp_target_global})
|
|
endif()
|
|
endmacro()
|
|
|
|
|
|
#[========================================[.rst:
|
|
Variables Affecting Behavior
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
.. variable:: PKG_CONFIG_EXECUTABLE
|
|
|
|
This can be set to the path of the pkg-config executable. If not provided,
|
|
it will be set by the module as a result of calling :command:`find_program`
|
|
internally. The ``PKG_CONFIG`` environment variable can be used as a hint.
|
|
|
|
.. variable:: PKG_CONFIG_USE_CMAKE_PREFIX_PATH
|
|
|
|
Specifies whether :command:`pkg_check_modules` and
|
|
:command:`pkg_search_module` should add the paths in the
|
|
:variable:`CMAKE_PREFIX_PATH`, :variable:`CMAKE_FRAMEWORK_PATH` and
|
|
:variable:`CMAKE_APPBUNDLE_PATH` cache and environment variables to the
|
|
``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:
|