diff options
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/FindPkgConfig.cmake | 788 |
1 files changed, 600 insertions, 188 deletions
diff --git a/cmake/FindPkgConfig.cmake b/cmake/FindPkgConfig.cmake index 360415309..5162a44b3 100644 --- a/cmake/FindPkgConfig.cmake +++ b/cmake/FindPkgConfig.cmake @@ -1,117 +1,60 @@ -# - a pkg-config module for CMake -# -# Usage: -# pkg_check_modules(<PREFIX> [REQUIRED] <MODULE> [<MODULE>]*) -# checks for all the given modules -# -# pkg_search_module(<PREFIX> [REQUIRED] <MODULE> [<MODULE>]*) -# checks for given modules and uses the first working one -# -# When the 'REQUIRED' argument was set, macros will fail with an error -# when module(s) could not be found -# -# It sets the following variables: -# PKG_CONFIG_FOUND ... true iff pkg-config works on the system -# PKG_CONFIG_EXECUTABLE ... pathname of the pkg-config program -# <PREFIX>_FOUND ... set to 1 iff module(s) exist -# -# 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 pkgconfig was called with the '--static' -# option. -# <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 -# pkg_check_modules (GLIB2 glib-2.0) -# -# 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 -# -# 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 -# FOO_gtk+-2.0_VERSION=2.8.20 -# -# pkg_check_modules (XRENDER REQUIRED xrender) -# defines e.g.: -# XRENDER_LIBRARIES=Xrender;X11 -# XRENDER_STATIC_LIBRARIES=Xrender;X11;pthread;Xau;Xdmcp -# -# pkg_search_module (BAR libxml-2.0 libxml2 libxml>=2) - - -# Copyright (C) 2006 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de> -# -# Redistribution and use, with or without modification, are permitted -# provided that the following conditions are met: -# -# 1. Redistributions must retain the above copyright notice, this -# list of conditions and the following disclaimer. -# 2. The name of the author may not be used to endorse or promote -# products derived from this software without specific prior -# written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR -# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY -# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL -# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE -# GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER -# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR -# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN -# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# Distributed under the OSI-approved BSD 3-Clause License. See accompanying +# file Copyright.txt or https://cmake.org/licensing for details. + +#[========================================[.rst: +FindPkgConfig +------------- + +A ``pkg-config`` module for CMake. + +Finds the ``pkg-config`` executable and adds the :command:`pkg_get_variable`, +:command:`pkg_check_modules` and :command:`pkg_search_module` commands. The +following variables will also be set: +``PKG_CONFIG_FOUND`` + if pkg-config executable was found +``PKG_CONFIG_EXECUTABLE`` + pathname of the pkg-config program +``PKG_CONFIG_VERSION_STRING`` + version of pkg-config (since CMake 2.8.8) + +#]========================================] ### Common stuff #### set(PKG_CONFIG_VERSION 1) -set(PKG_CONFIG_FOUND 0) +# 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) - set(PKG_CONFIG_FOUND 1) -endif(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(_pkgconfig_unset) +endmacro() macro(_pkgconfig_set var value) set(${var} ${value} CACHE INTERNAL "") -endmacro(_pkgconfig_set) +endmacro() # Invokes pkgconfig, cleans up the result and sets variables macro(_pkgconfig_invoke _pkglist _prefix _varname _regexp) @@ -120,55 +63,311 @@ macro(_pkgconfig_invoke _pkglist _prefix _varname _regexp) execute_process( COMMAND ${PKG_CONFIG_EXECUTABLE} ${ARGN} ${_pkglist} OUTPUT_VARIABLE _pkgconfig_invoke_result - RESULT_VARIABLE _pkgconfig_failed) + RESULT_VARIABLE _pkgconfig_failed + OUTPUT_STRIP_TRAILING_WHITESPACE) if (_pkgconfig_failed) set(_pkgconfig_${_varname} "") _pkgconfig_unset(${_prefix}_${_varname}) - else(_pkgconfig_failed) - string(REGEX REPLACE "[\r\n]" " " _pkgconfig_invoke_result "${_pkgconfig_invoke_result}") - string(REGEX REPLACE " +$" "" _pkgconfig_invoke_result "${_pkgconfig_invoke_result}") + else() + string(REGEX REPLACE "[\r\n]" " " _pkgconfig_invoke_result "${_pkgconfig_invoke_result}") if (NOT ${_regexp} STREQUAL "") string(REGEX REPLACE "${_regexp}" " " _pkgconfig_invoke_result "${_pkgconfig_invoke_result}") - endif(NOT ${_regexp} STREQUAL "") + 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(_pkgconfig_failed) -endmacro(_pkgconfig_invoke) + endif() +endmacro() + +# Internal version of pkg_get_variable; expects PKG_CONFIG_PATH to already be set +function (_pkg_get_variable result pkg variable) + _pkgconfig_invoke("${pkg}" "prefix" "result" "" "--variable=${variable}") + set("${result}" + "${prefix_result}" + PARENT_SCOPE) +endfunction () # 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 ${ARGN}) -endmacro(_pkgconfig_invoke_dyn) +endmacro() # Splits given arguments into options and a package list -macro(_pkgconfig_parse_options _result _is_req) +macro(_pkgconfig_parse_options _result _is_req _is_silent _no_cmake_path _no_cmake_environment_path _imp_target _imp_target_global) set(${_is_req} 0) + set(${_is_silent} 0) + set(${_no_cmake_path} 0) + set(${_no_cmake_environment_path} 0) + set(${_imp_target} 0) + set(${_imp_target_global} 0) + if(DEFINED PKG_CONFIG_USE_CMAKE_PREFIX_PATH) + if(NOT PKG_CONFIG_USE_CMAKE_PREFIX_PATH) + set(${_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 (_pkg STREQUAL "REQUIRED") - endforeach(_pkg ${ARGN}) + endif () + if (_pkg STREQUAL "QUIET") + set(${_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() + if (_pkg STREQUAL "IMPORTED_TARGET") + set(${_imp_target} 1) + endif() + if (_pkg STREQUAL "GLOBAL") + set(${_imp_target_global} 1) + endif() + endforeach() + + if (${_imp_target_global} AND NOT ${_imp_target}) + message(SEND_ERROR "the argument GLOBAL may only be used together with IMPORTED_TARGET") + endif() set(${_result} ${ARGN}) list(REMOVE_ITEM ${_result} "REQUIRED") -endmacro(_pkgconfig_parse_options) + list(REMOVE_ITEM ${_result} "QUIET") + list(REMOVE_ITEM ${_result} "NO_CMAKE_PATH") + list(REMOVE_ITEM ${_result} "NO_CMAKE_ENVIRONMENT_PATH") + list(REMOVE_ITEM ${_result} "IMPORTED_TARGET") + list(REMOVE_ITEM ${_result} "GLOBAL") +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(ARGC GREATER 2 AND _var STREQUAL "ENV") + set(_var ${ARGV2}) + set(_is_env 1) + endif() + if(NOT _is_env) + if(NOT "${${_var}}" STREQUAL "") + list(APPEND ${_extra_paths_var} ${${_var}}) + 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() + +# scan the LDFLAGS returned by pkg-config for library directories and +# libraries, figure out the absolute paths of that libraries in the +# given directories +function(_pkg_find_libs _prefix _no_cmake_path _no_cmake_environment_path) + unset(_libs) + unset(_find_opts) + + # set the options that are used as long as the .pc file does not provide a library + # path to look into + if(_no_cmake_path) + list(APPEND _find_opts "NO_CMAKE_PATH") + endif() + if(_no_cmake_environment_path) + list(APPEND _find_opts "NO_CMAKE_ENVIRONMENT_PATH") + endif() + + unset(_search_paths) + foreach (flag IN LISTS ${_prefix}_LDFLAGS) + if (flag MATCHES "^-L(.*)") + list(APPEND _search_paths ${CMAKE_MATCH_1}) + continue() + endif() + if (flag MATCHES "^-l(.*)") + set(_pkg_search "${CMAKE_MATCH_1}") + else() + continue() + endif() + + if(_search_paths) + # Firstly search in -L paths + find_library(pkgcfg_lib_${_prefix}_${_pkg_search} + NAMES ${_pkg_search} + HINTS ${_search_paths} NO_DEFAULT_PATH) + endif() + find_library(pkgcfg_lib_${_prefix}_${_pkg_search} + NAMES ${_pkg_search} + ${_find_opts}) + mark_as_advanced(pkgcfg_lib_${_prefix}_${_pkg_search}) + if(pkgcfg_lib_${_prefix}_${_pkg_search}) + list(APPEND _libs "${pkgcfg_lib_${_prefix}_${_pkg_search}}") + else() + list(APPEND _libs ${_pkg_search}) + endif() + endforeach() + + set(${_prefix}_LINK_LIBRARIES "${_libs}" PARENT_SCOPE) +endfunction() + +# create an imported target from all the information returned by pkg-config +function(_pkg_create_imp_target _prefix _imp_target_global) + # only create the target if it is linkable, i.e. no executables + if (NOT TARGET PkgConfig::${_prefix} + AND ( ${_prefix}_INCLUDE_DIRS OR ${_prefix}_LINK_LIBRARIES OR ${_prefix}_LDFLAGS_OTHER OR ${_prefix}_CFLAGS_OTHER )) + if(${_imp_target_global}) + set(_global_opt "GLOBAL") + else() + unset(_global_opt) + endif() + add_library(PkgConfig::${_prefix} INTERFACE IMPORTED ${_global_opt}) + + if(${_prefix}_INCLUDE_DIRS) + set_property(TARGET PkgConfig::${_prefix} PROPERTY + INTERFACE_INCLUDE_DIRECTORIES "${${_prefix}_INCLUDE_DIRS}") + endif() + if(${_prefix}_LINK_LIBRARIES) + set_property(TARGET PkgConfig::${_prefix} PROPERTY + INTERFACE_LINK_LIBRARIES "${${_prefix}_LINK_LIBRARIES}") + endif() + if(${_prefix}_LDFLAGS_OTHER) + set_property(TARGET PkgConfig::${_prefix} PROPERTY + INTERFACE_LINK_OPTIONS "${${_prefix}_LDFLAGS_OTHER}") + endif() + if(${_prefix}_CFLAGS_OTHER) + set_property(TARGET PkgConfig::${_prefix} PROPERTY + INTERFACE_COMPILE_OPTIONS "${${_prefix}_CFLAGS_OTHER}") + endif() + endif() +endfunction() + +# recalculate the dynamic output +# this is a macro and not a function so the result of _pkg_find_libs is automatically propagated +macro(_pkg_recalculate _prefix _no_cmake_path _no_cmake_environment_path _imp_target _imp_target_global) + _pkg_find_libs(${_prefix} ${_no_cmake_path} ${_no_cmake_environment_path}) + if(${_imp_target}) + _pkg_create_imp_target(${_prefix} ${_imp_target_global}) + endif() +endmacro() + +### +macro(_pkg_set_path_internal) + set(_extra_paths) + + if(NOT _no_cmake_path) + _pkgconfig_add_extra_path(_extra_paths CMAKE_PREFIX_PATH) + _pkgconfig_add_extra_path(_extra_paths CMAKE_FRAMEWORK_PATH) + _pkgconfig_add_extra_path(_extra_paths CMAKE_APPBUNDLE_PATH) + endif() + + if(NOT _no_cmake_environment_path) + _pkgconfig_add_extra_path(_extra_paths ENV CMAKE_PREFIX_PATH) + _pkgconfig_add_extra_path(_extra_paths ENV CMAKE_FRAMEWORK_PATH) + _pkgconfig_add_extra_path(_extra_paths ENV CMAKE_APPBUNDLE_PATH) + endif() + + if(NOT _extra_paths STREQUAL "") + # Save the PKG_CONFIG_PATH environment variable, and add paths + # from the CMAKE_PREFIX_PATH variables + set(_pkgconfig_path_old "$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, check the FIND_LIBRARY_USE_LIB32_PATHS and FIND_LIBRARY_USE_LIB64_PATHS properties + get_property(uselib32 GLOBAL PROPERTY FIND_LIBRARY_USE_LIB32_PATHS) + if(uselib32 AND CMAKE_SIZEOF_VOID_P EQUAL 4) + list(APPEND _lib_dirs "lib32/pkgconfig") + endif() + get_property(uselib64 GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS) + if(uselib64 AND CMAKE_SIZEOF_VOID_P EQUAL 8) + list(APPEND _lib_dirs "lib64/pkgconfig") + endif() + get_property(uselibx32 GLOBAL PROPERTY FIND_LIBRARY_USE_LIBX32_PATHS) + if(uselibx32 AND CMAKE_INTERNAL_PLATFORM_ABI STREQUAL "ELF X32") + list(APPEND _lib_dirs "libx32/pkgconfig") + endif() + endif() + endif() + if(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD" AND NOT CMAKE_CROSSCOMPILING) + list(APPEND _lib_dirs "libdata/pkgconfig") + endif() + list(APPEND _lib_dirs "lib/pkgconfig") + list(APPEND _lib_dirs "share/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} "${_pkgconfig_path}") + endif() + + # Unset variables + unset(_lib_dirs) + unset(_pkgconfig_path) + endif() +endmacro() + +macro(_pkg_restore_path_internal) + if(NOT _extra_paths STREQUAL "") + # Restore the environment variable + set(ENV{PKG_CONFIG_PATH} "${_pkgconfig_path_old}") + endif() + + unset(_extra_paths) + unset(_pkgconfig_path_old) +endmacro() ### -macro(_pkg_check_modules_internal _is_required _is_silent _prefix) +macro(_pkg_check_modules_internal _is_required _is_silent _no_cmake_path _no_cmake_environment_path _imp_target _imp_target_global _prefix) _pkgconfig_unset(${_prefix}_FOUND) _pkgconfig_unset(${_prefix}_VERSION) _pkgconfig_unset(${_prefix}_PREFIX) _pkgconfig_unset(${_prefix}_INCLUDEDIR) _pkgconfig_unset(${_prefix}_LIBDIR) + _pkgconfig_unset(${_prefix}_MODULE_NAME) _pkgconfig_unset(${_prefix}_LIBS) _pkgconfig_unset(${_prefix}_LIBS_L) _pkgconfig_unset(${_prefix}_LIBS_PATHS) @@ -193,83 +392,77 @@ macro(_pkg_check_modules_internal _is_required _is_silent _prefix) # 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(_pkg_check_modules_cnt EQUAL 1) - message(STATUS "checking for modules '${_pkg_check_modules_list}'") - endif(_pkg_check_modules_cnt EQUAL 1) - endif(NOT ${_is_silent}) + message(STATUS "Checking for module '${_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) + _pkg_set_path_internal() + # iterate through module list and check whether they exist and match the required version foreach (_pkg_check_modules_pkg ${_pkg_check_modules_list}) set(_pkg_check_modules_exist_query) # check whether version is given - if (_pkg_check_modules_pkg MATCHES ".*(>=|=|<=).*") - string(REGEX REPLACE "(.*[^><])(>=|=|<=)(.*)" "\\1" _pkg_check_modules_pkg_name "${_pkg_check_modules_pkg}") - string(REGEX REPLACE "(.*[^><])(>=|=|<=)(.*)" "\\2" _pkg_check_modules_pkg_op "${_pkg_check_modules_pkg}") - string(REGEX REPLACE "(.*[^><])(>=|=|<=)(.*)" "\\3" _pkg_check_modules_pkg_ver "${_pkg_check_modules_pkg}") - else(_pkg_check_modules_pkg MATCHES ".*(>=|=|<=).*") + 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(_pkg_check_modules_pkg MATCHES ".*(>=|=|<=).*") - - # handle the operands - if (_pkg_check_modules_pkg_op STREQUAL ">=") - list(APPEND _pkg_check_modules_exist_query --atleast-version) - endif(_pkg_check_modules_pkg_op STREQUAL ">=") - - if (_pkg_check_modules_pkg_op STREQUAL "=") - list(APPEND _pkg_check_modules_exist_query --exact-version) - endif(_pkg_check_modules_pkg_op STREQUAL "=") - - if (_pkg_check_modules_pkg_op STREQUAL "<=") - list(APPEND _pkg_check_modules_exist_query --max-version) - endif(_pkg_check_modules_pkg_op STREQUAL "<=") - - # 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 "${_pkg_check_modules_pkg_ver}") - else(_pkg_check_modules_pkg_op) - list(APPEND _pkg_check_modules_exist_query --exists) - endif(_pkg_check_modules_pkg_op) + endif() _pkgconfig_unset(${_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 "${_pkg_check_modules_pkg_name}") + # create the final query which is of the format: + # * <pkg-name> > <version> + # * <pkg-name> >= <version> + # * <pkg-name> = <version> + # * <pkg-name> <= <version> + # * <pkg-name> < <version> + # * --exists <pkg-name> + list(APPEND _pkg_check_modules_exist_query --print-errors --short-errors) + if (_pkg_check_modules_pkg_op) + list(APPEND _pkg_check_modules_exist_query "${_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) + RESULT_VARIABLE _pkgconfig_retval + ERROR_VARIABLE _pkgconfig_error + ERROR_STRIP_TRAILING_WHITESPACE) # evaluate result and tell failures if (_pkgconfig_retval) if(NOT ${_is_silent}) - message(STATUS " package '${_pkg_check_modules_pkg}' not found") - endif(NOT ${_is_silent}) + message(STATUS " ${_pkgconfig_error}") + endif() set(_pkg_check_modules_failed 1) - endif(_pkgconfig_retval) - endforeach(_pkg_check_modules_pkg) + endif() + endforeach() if(_pkg_check_modules_failed) # fail when requested if (${_is_required}) - message(SEND_ERROR "A required package was not found") - endif (${_is_required}) - else(_pkg_check_modules_failed) + message(FATAL_ERROR "A required package was not found") + endif () + else() # when we are here, we checked whether requested modules # exist. Now, go through them and set variables @@ -281,17 +474,23 @@ macro(_pkg_check_modules_internal _is_required _is_silent _prefix) # handle case when there is only one package required if (pkg_count EQUAL 1) set(_pkg_check_prefix "${_prefix}") - else(pkg_count EQUAL 1) + else() set(_pkg_check_prefix "${_prefix}_${_pkg_check_modules_pkg}") - endif(pkg_count EQUAL 1) + 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 ) - - message(STATUS " found ${_pkg_check_modules_pkg}, version ${_pkgconfig_VERSION}") - endforeach(_pkg_check_modules_pkg) + pkg_get_variable("${_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 () + _pkgconfig_set("${_pkg_check_prefix}_MODULE_NAME" "${_pkg_check_modules_pkg}") + + 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}" "${_prefix}" LIBRARIES "(^| )-l" --libs-only-l ) @@ -302,58 +501,271 @@ macro(_pkg_check_modules_internal _is_required _is_silent _prefix) _pkgconfig_invoke_dyn("${_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}" "${_prefix}" CFLAGS_OTHER "" --cflags-only-other ) - endif(_pkg_check_modules_failed) - else(PKG_CONFIG_EXECUTABLE) + + _pkg_recalculate("${_prefix}" ${_no_cmake_path} ${_no_cmake_environment_path} ${_imp_target} ${_imp_target_global}) + endif() + + _pkg_restore_path_internal() + else() if (${_is_required}) message(SEND_ERROR "pkg-config tool not found") - endif (${_is_required}) - endif(PKG_CONFIG_EXECUTABLE) -endmacro(_pkg_check_modules_internal) + 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. -### -### User visible macros start here -### + 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 ${PKG_CONFIG_VERSION}) - _pkgconfig_parse_options (_pkg_modules _pkg_is_required "${_module0}" ${ARGN}) - _pkg_check_modules_internal("${_pkg_is_required}" 0 "${_prefix}" ${_pkg_modules}) + if (NOT DEFINED __pkg_config_checked_${_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} ${PKG_CONFIG_VERSION}) - endif(NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION}) -endmacro(pkg_check_modules) + if (${_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} ${_imp_target_global}) + endif() + endif() +endmacro() -### + +#[========================================[.rst: +.. command:: pkg_search_module + + The behavior of this command is the same as :command:`pkg_check_modules`, + except that rather than checking for all the specified modules, it searches + for just the first successful match. + + .. code-block:: cmake + + pkg_search_module(<prefix> + [REQUIRED] [QUIET] + [NO_CMAKE_PATH] + [NO_CMAKE_ENVIRONMENT_PATH] + [IMPORTED_TARGET [GLOBAL]] + <moduleSpec> [<moduleSpec>...]) + + If a module is found, the ``<prefix>_MODULE_NAME`` variable will contain the + name of the matching module. This variable can be used if you need to run + :command:`pkg_get_variable`. + + Example: + + .. code-block:: cmake + + pkg_search_module (BAR libxml-2.0 libxml2 libxml>=2) +#]========================================] macro(pkg_search_module _prefix _module0) + _pkgconfig_parse_options(_pkg_modules_alt _pkg_is_required _pkg_is_silent _no_cmake_path _no_cmake_environment_path _imp_target _imp_target_global "${_module0}" ${ARGN}) # check cached value if (NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION} OR NOT ${_prefix}_FOUND) set(_pkg_modules_found 0) - _pkgconfig_parse_options(_pkg_modules_alt _pkg_is_required "${_module0}" ${ARGN}) - message(STATUS "checking for one of the modules '${_pkg_modules_alt}'") + 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 ${_pkg_modules_alt}) if(NOT _pkg_modules_found) - _pkg_check_modules_internal(0 1 "${_prefix}" "${_pkg_alt}") - endif(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(${_prefix}_FOUND) - endforeach(_pkg_alt) + break() + endif() + endforeach() if (NOT ${_prefix}_FOUND) if(${_pkg_is_required}) message(SEND_ERROR "None of the required '${_pkg_modules_alt}' found") - endif(${_pkg_is_required}) - endif(NOT ${_prefix}_FOUND) + endif() + endif() _pkgconfig_set(__pkg_config_checked_${_prefix} ${PKG_CONFIG_VERSION}) - endif(NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION} OR NOT ${_prefix}_FOUND) -endmacro(pkg_search_module) + elseif (${_prefix}_FOUND) + _pkg_recalculate("${_prefix}" ${_no_cmake_path} ${_no_cmake_environment_path} ${_imp_target} ${_imp_target_global}) + endif() +endmacro() + +#[========================================[.rst: +.. command:: pkg_get_variable + + Retrieves the value of a pkg-config variable ``varName`` and stores it in the + result variable ``resultVar`` in the calling scope. + + .. code-block:: cmake + + pkg_get_variable(<resultVar> <moduleName> <varName>) + + If ``pkg-config`` returns multiple values for the specified variable, + ``resultVar`` will contain a :ref:`;-list <CMake Language Lists>`. + + For example: + + .. code-block:: cmake + + pkg_get_variable(GI_GIRDIR gobject-introspection-1.0 girdir) +#]========================================] +function (pkg_get_variable result pkg variable) + _pkg_set_path_internal() + _pkgconfig_invoke("${pkg}" "prefix" "result" "" "--variable=${variable}") + set("${result}" + "${prefix_result}" + PARENT_SCOPE) + _pkg_restore_path_internal() +endfunction () + + +#[========================================[.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 |