| # - 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_OTHERS ... all other linker flags |
| # <XPREFIX>_INCLUDE_DIRS ... the '-I' preprocessor flags (w/o the '-I') |
| # <XPREFIX>_CFLAGS ... all required cflags |
| # <XPREFIX>_CFLAGS_OTHERS ... 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. |
| |
| |
| ### Common stuff #### |
| set(PKG_CONFIG_VERSION 1) |
| set(PKG_CONFIG_FOUND 0) |
| |
| 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) |
| |
| |
| # Unsets the given variables |
| macro(_pkgconfig_unset var) |
| set(${var} "" CACHE INTERNAL "") |
| endmacro(_pkgconfig_unset) |
| |
| macro(_pkgconfig_set var value) |
| set(${var} ${value} CACHE INTERNAL "") |
| endmacro(_pkgconfig_set) |
| |
| # 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(_pkgconfig_failed) |
| 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(NOT ${_regexp} STREQUAL "") |
| |
| 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) |
| |
| # 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 ${ARGN}) |
| endmacro(_pkgconfig_invoke_dyn) |
| |
| # Splits given arguments into options and a package list |
| macro(_pkgconfig_parse_options _result _is_req) |
| set(${_is_req} 0) |
| |
| foreach(_pkg ${ARGN}) |
| if (_pkg STREQUAL "REQUIRED") |
| set(${_is_req} 1) |
| endif (_pkg STREQUAL "REQUIRED") |
| endforeach(_pkg ${ARGN}) |
| |
| set(${_result} ${ARGN}) |
| list(REMOVE_ITEM ${_result} "REQUIRED") |
| endmacro(_pkgconfig_parse_options) |
| |
| ### |
| macro(_pkg_check_modules_internal _is_required _is_silent _prefix) |
| _pkgconfig_unset(${_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(_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}) |
| |
| set(_pkg_check_modules_packages) |
| set(_pkg_check_modules_failed) |
| |
| # 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 ".*(>=|=|<=).*") |
| 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) |
| |
| _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(NOT ${_is_silent}) |
| |
| set(_pkg_check_modules_failed 1) |
| endif(_pkgconfig_retval) |
| endforeach(_pkg_check_modules_pkg) |
| |
| if(_pkg_check_modules_failed) |
| # fail when requested |
| if (${_is_required}) |
| message(SEND_ERROR "A required package was not found") |
| endif (${_is_required}) |
| else(_pkg_check_modules_failed) |
| # when we are here, we checked whether requested modules |
| # exist. Now, go through them and set variables |
| |
| _pkgconfig_set(${_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(pkg_count EQUAL 1) |
| set(_pkg_check_prefix "${_prefix}_${_pkg_check_modules_pkg}") |
| endif(pkg_count EQUAL 1) |
| |
| _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 ${_pkgconfig_VERSION}") |
| endforeach(_pkg_check_modules_pkg) |
| |
| # set variables which are combined for multiple modules |
| _pkgconfig_invoke_dyn("${_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}" "${_prefix}" CFLAGS_OTHER "" --cflags-only-other ) |
| endif(_pkg_check_modules_failed) |
| else(PKG_CONFIG_EXECUTABLE) |
| if (${_is_required}) |
| message(SEND_ERROR "pkg-config tool not found") |
| endif (${_is_required}) |
| endif(PKG_CONFIG_EXECUTABLE) |
| endmacro(_pkg_check_modules_internal) |
| |
| ### |
| ### User visible macros start here |
| ### |
| |
| ### |
| macro(pkg_check_modules _prefix _module0) |
| # check cached value |
| if (NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION}) |
| _pkgconfig_parse_options (_pkg_modules _pkg_is_required "${_module0}" ${ARGN}) |
| _pkg_check_modules_internal("${_pkg_is_required}" 0 "${_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 ${PKG_CONFIG_VERSION}) |
| endmacro(pkg_check_modules) |
| |
| ### |
| macro(pkg_search_module _prefix _module0) |
| # check cached value |
| if (NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION}) |
| set(_pkg_modules_found 0) |
| _pkgconfig_parse_options(_pkg_modules_alt _pkg_is_required "${_module0}" ${ARGN}) |
| |
| message(STATUS "checking for one of the modules '${_pkg_modules_alt}'") |
| |
| # 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}" "${_pkg_alt}") |
| endif(NOT _pkg_modules_found) |
| |
| if (${_prefix}_FOUND) |
| set(_pkg_modules_found 1) |
| endif(${_prefix}_FOUND) |
| endforeach(_pkg_alt) |
| |
| 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 ${_prefix}_FOUND) |
| |
| _pkgconfig_set(__pkg_config_checked_${_prefix} ${PKG_CONFIG_VERSION}) |
| endif(NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION}) |
| endmacro(pkg_search_module) |
| |
| ### Local Variables: |
| ### mode: cmake |
| ### End: |
