| [85] | 1 | # - a pkg-config module for CMake |
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| 2 | # |
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| 3 | # Usage: |
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| 4 | # pkg_check_modules(<PREFIX> [REQUIRED] <MODULE> [<MODULE>]*) |
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| 5 | # checks for all the given modules |
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| 6 | # |
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| 7 | # pkg_search_module(<PREFIX> [REQUIRED] <MODULE> [<MODULE>]*) |
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| 8 | # checks for given modules and uses the first working one |
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| 9 | # |
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| 10 | # When the 'REQUIRED' argument was set, macros will fail with an error |
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| 11 | # when module(s) could not be found |
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| 12 | # |
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| 13 | # It sets the following variables: |
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| 14 | # PKG_CONFIG_FOUND ... true iff pkg-config works on the system |
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| 15 | # PKG_CONFIG_EXECUTABLE ... pathname of the pkg-config program |
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| 16 | # <PREFIX>_FOUND ... set to 1 iff module(s) exist |
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| 17 | # |
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| 18 | # For the following variables two sets of values exist; first one is the |
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| 19 | # common one and has the given PREFIX. The second set contains flags |
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| 20 | # which are given out when pkgconfig was called with the '--static' |
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| 21 | # option. |
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| 22 | # <XPREFIX>_LIBRARIES ... only the libraries (w/o the '-l') |
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| 23 | # <XPREFIX>_LIBRARY_DIRS ... the paths of the libraries (w/o the '-L') |
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| 24 | # <XPREFIX>_LDFLAGS ... all required linker flags |
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| 25 | # <XPREFIX>_LDFLAGS_OTHERS ... all other linker flags |
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| 26 | # <XPREFIX>_INCLUDE_DIRS ... the '-I' preprocessor flags (w/o the '-I') |
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| 27 | # <XPREFIX>_CFLAGS ... all required cflags |
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| 28 | # <XPREFIX>_CFLAGS_OTHERS ... the other compiler flags |
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| 29 | # |
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| 30 | # <XPREFIX> = <PREFIX> for common case |
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| 31 | # <XPREFIX> = <PREFIX>_STATIC for static linking |
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| 32 | # |
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| 33 | # There are some special variables whose prefix depends on the count |
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| 34 | # of given modules. When there is only one module, <PREFIX> stays |
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| 35 | # unchanged. When there are multiple modules, the prefix will be |
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| 36 | # changed to <PREFIX>_<MODNAME>: |
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| 37 | # <XPREFIX>_VERSION ... version of the module |
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| 38 | # <XPREFIX>_PREFIX ... prefix-directory of the module |
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| 39 | # <XPREFIX>_INCLUDEDIR ... include-dir of the module |
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| 40 | # <XPREFIX>_LIBDIR ... lib-dir of the module |
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| 41 | # |
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| 42 | # <XPREFIX> = <PREFIX> when |MODULES| == 1, else |
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| 43 | # <XPREFIX> = <PREFIX>_<MODNAME> |
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| 44 | # |
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| 45 | # A <MODULE> parameter can have the following formats: |
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| 46 | # {MODNAME} ... matches any version |
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| 47 | # {MODNAME}>={VERSION} ... at least version <VERSION> is required |
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| 48 | # {MODNAME}={VERSION} ... exactly version <VERSION> is required |
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| 49 | # {MODNAME}<={VERSION} ... modules must not be newer than <VERSION> |
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| 50 | # |
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| 51 | # Examples |
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| 52 | # pkg_check_modules (GLIB2 glib-2.0) |
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| 53 | # |
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| 54 | # pkg_check_modules (GLIB2 glib-2.0>=2.10) |
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| 55 | # requires at least version 2.10 of glib2 and defines e.g. |
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| 56 | # GLIB2_VERSION=2.10.3 |
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| 57 | # |
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| 58 | # pkg_check_modules (FOO glib-2.0>=2.10 gtk+-2.0) |
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| 59 | # requires both glib2 and gtk2, and defines e.g. |
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| 60 | # FOO_glib-2.0_VERSION=2.10.3 |
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| 61 | # FOO_gtk+-2.0_VERSION=2.8.20 |
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| 62 | # |
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| 63 | # pkg_check_modules (XRENDER REQUIRED xrender) |
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| 64 | # defines e.g.: |
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| 65 | # XRENDER_LIBRARIES=Xrender;X11 |
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| 66 | # XRENDER_STATIC_LIBRARIES=Xrender;X11;pthread;Xau;Xdmcp |
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| 67 | # |
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| 68 | # pkg_search_module (BAR libxml-2.0 libxml2 libxml>=2) |
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| 69 | |
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| 70 | |
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| 71 | # Copyright (C) 2006 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de> |
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| 72 | # |
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| 73 | # Redistribution and use, with or without modification, are permitted |
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| 74 | # provided that the following conditions are met: |
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| 75 | # |
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| 76 | # 1. Redistributions must retain the above copyright notice, this |
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| 77 | # list of conditions and the following disclaimer. |
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| 78 | # 2. The name of the author may not be used to endorse or promote |
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| 79 | # products derived from this software without specific prior |
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| 80 | # written permission. |
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| 81 | # |
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| 82 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 83 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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| 84 | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 85 | # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
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| 86 | # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 87 | # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
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| 88 | # GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 89 | # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER |
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| 90 | # IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
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| 91 | # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
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| 92 | # IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 93 | |
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| 94 | |
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| 95 | ### Common stuff #### |
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| 96 | set(PKG_CONFIG_VERSION 1) |
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| 97 | set(PKG_CONFIG_FOUND 0) |
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| 98 | |
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| 99 | find_program(PKG_CONFIG_EXECUTABLE NAMES pkg-config DOC "pkg-config executable") |
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| 100 | mark_as_advanced(PKG_CONFIG_EXECUTABLE) |
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| 101 | |
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| 102 | if(PKG_CONFIG_EXECUTABLE) |
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| 103 | set(PKG_CONFIG_FOUND 1) |
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| 104 | endif(PKG_CONFIG_EXECUTABLE) |
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| 105 | |
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| 106 | |
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| 107 | # Unsets the given variables |
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| 108 | macro(_pkgconfig_unset var) |
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| 109 | set(${var} "" CACHE INTERNAL "") |
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| 110 | endmacro(_pkgconfig_unset) |
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| 111 | |
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| 112 | macro(_pkgconfig_set var value) |
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| 113 | set(${var} ${value} CACHE INTERNAL "") |
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| 114 | endmacro(_pkgconfig_set) |
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| 115 | |
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| 116 | # Invokes pkgconfig, cleans up the result and sets variables |
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| 117 | macro(_pkgconfig_invoke _pkglist _prefix _varname _regexp) |
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| 118 | set(_pkgconfig_invoke_result) |
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| 119 | |
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| 120 | execute_process( |
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| 121 | COMMAND ${PKG_CONFIG_EXECUTABLE} ${ARGN} ${_pkglist} |
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| 122 | OUTPUT_VARIABLE _pkgconfig_invoke_result |
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| 123 | RESULT_VARIABLE _pkgconfig_failed) |
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| 124 | |
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| 125 | if (_pkgconfig_failed) |
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| 126 | set(_pkgconfig_${_varname} "") |
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| 127 | _pkgconfig_unset(${_prefix}_${_varname}) |
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| 128 | else(_pkgconfig_failed) |
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| 129 | string(REGEX REPLACE "[\r\n]" " " _pkgconfig_invoke_result "${_pkgconfig_invoke_result}") |
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| 130 | string(REGEX REPLACE " +$" "" _pkgconfig_invoke_result "${_pkgconfig_invoke_result}") |
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| 131 | |
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| 132 | if (NOT ${_regexp} STREQUAL "") |
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| 133 | string(REGEX REPLACE "${_regexp}" " " _pkgconfig_invoke_result "${_pkgconfig_invoke_result}") |
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| 134 | endif(NOT ${_regexp} STREQUAL "") |
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| 135 | |
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| 136 | separate_arguments(_pkgconfig_invoke_result) |
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| 137 | |
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| 138 | #message(STATUS " ${_varname} ... ${_pkgconfig_invoke_result}") |
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| 139 | set(_pkgconfig_${_varname} ${_pkgconfig_invoke_result}) |
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| 140 | _pkgconfig_set(${_prefix}_${_varname} "${_pkgconfig_invoke_result}") |
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| 141 | endif(_pkgconfig_failed) |
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| 142 | endmacro(_pkgconfig_invoke) |
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| 143 | |
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| 144 | # Invokes pkgconfig two times; once without '--static' and once with |
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| 145 | # '--static' |
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| 146 | macro(_pkgconfig_invoke_dyn _pkglist _prefix _varname cleanup_regexp) |
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| 147 | _pkgconfig_invoke("${_pkglist}" ${_prefix} ${_varname} "${cleanup_regexp}" ${ARGN}) |
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| 148 | _pkgconfig_invoke("${_pkglist}" ${_prefix} STATIC_${_varname} "${cleanup_regexp}" --static ${ARGN}) |
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| 149 | endmacro(_pkgconfig_invoke_dyn) |
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| 150 | |
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| 151 | # Splits given arguments into options and a package list |
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| 152 | macro(_pkgconfig_parse_options _result _is_req) |
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| 153 | set(${_is_req} 0) |
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| 154 | |
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| 155 | foreach(_pkg ${ARGN}) |
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| 156 | if (_pkg STREQUAL "REQUIRED") |
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| 157 | set(${_is_req} 1) |
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| 158 | endif (_pkg STREQUAL "REQUIRED") |
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| 159 | endforeach(_pkg ${ARGN}) |
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| 160 | |
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| 161 | set(${_result} ${ARGN}) |
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| 162 | list(REMOVE_ITEM ${_result} "REQUIRED") |
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| 163 | endmacro(_pkgconfig_parse_options) |
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| 164 | |
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| 165 | ### |
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| 166 | macro(_pkg_check_modules_internal _is_required _is_silent _prefix) |
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| 167 | _pkgconfig_unset(${_prefix}_FOUND) |
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| 168 | _pkgconfig_unset(${_prefix}_VERSION) |
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| 169 | _pkgconfig_unset(${_prefix}_PREFIX) |
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| 170 | _pkgconfig_unset(${_prefix}_INCLUDEDIR) |
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| 171 | _pkgconfig_unset(${_prefix}_LIBDIR) |
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| 172 | _pkgconfig_unset(${_prefix}_LIBS) |
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| 173 | _pkgconfig_unset(${_prefix}_LIBS_L) |
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| 174 | _pkgconfig_unset(${_prefix}_LIBS_PATHS) |
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| 175 | _pkgconfig_unset(${_prefix}_LIBS_OTHER) |
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| 176 | _pkgconfig_unset(${_prefix}_CFLAGS) |
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| 177 | _pkgconfig_unset(${_prefix}_CFLAGS_I) |
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| 178 | _pkgconfig_unset(${_prefix}_CFLAGS_OTHER) |
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| 179 | _pkgconfig_unset(${_prefix}_STATIC_LIBDIR) |
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| 180 | _pkgconfig_unset(${_prefix}_STATIC_LIBS) |
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| 181 | _pkgconfig_unset(${_prefix}_STATIC_LIBS_L) |
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| 182 | _pkgconfig_unset(${_prefix}_STATIC_LIBS_PATHS) |
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| 183 | _pkgconfig_unset(${_prefix}_STATIC_LIBS_OTHER) |
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| 184 | _pkgconfig_unset(${_prefix}_STATIC_CFLAGS) |
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| 185 | _pkgconfig_unset(${_prefix}_STATIC_CFLAGS_I) |
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| 186 | _pkgconfig_unset(${_prefix}_STATIC_CFLAGS_OTHER) |
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| 187 | |
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| 188 | # create a better addressable variable of the modules and calculate its size |
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| 189 | set(_pkg_check_modules_list ${ARGN}) |
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| 190 | list(LENGTH _pkg_check_modules_list _pkg_check_modules_cnt) |
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| 191 | |
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| 192 | if(PKG_CONFIG_EXECUTABLE) |
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| 193 | # give out status message telling checked module |
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| 194 | if (NOT ${_is_silent}) |
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| 195 | if (_pkg_check_modules_cnt EQUAL 1) |
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| 196 | message(STATUS "checking for module '${_pkg_check_modules_list}'") |
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| 197 | else(_pkg_check_modules_cnt EQUAL 1) |
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| 198 | message(STATUS "checking for modules '${_pkg_check_modules_list}'") |
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| 199 | endif(_pkg_check_modules_cnt EQUAL 1) |
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| 200 | endif(NOT ${_is_silent}) |
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| 201 | |
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| 202 | set(_pkg_check_modules_packages) |
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| 203 | set(_pkg_check_modules_failed) |
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| 204 | |
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| 205 | # iterate through module list and check whether they exist and match the required version |
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| 206 | foreach (_pkg_check_modules_pkg ${_pkg_check_modules_list}) |
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| 207 | set(_pkg_check_modules_exist_query) |
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| 208 | |
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| 209 | # check whether version is given |
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| 210 | if (_pkg_check_modules_pkg MATCHES ".*(>=|=|<=).*") |
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| 211 | string(REGEX REPLACE "(.*[^><])(>=|=|<=)(.*)" "\\1" _pkg_check_modules_pkg_name "${_pkg_check_modules_pkg}") |
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| 212 | string(REGEX REPLACE "(.*[^><])(>=|=|<=)(.*)" "\\2" _pkg_check_modules_pkg_op "${_pkg_check_modules_pkg}") |
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| 213 | string(REGEX REPLACE "(.*[^><])(>=|=|<=)(.*)" "\\3" _pkg_check_modules_pkg_ver "${_pkg_check_modules_pkg}") |
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| 214 | else(_pkg_check_modules_pkg MATCHES ".*(>=|=|<=).*") |
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| 215 | set(_pkg_check_modules_pkg_name "${_pkg_check_modules_pkg}") |
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| 216 | set(_pkg_check_modules_pkg_op) |
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| 217 | set(_pkg_check_modules_pkg_ver) |
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| 218 | endif(_pkg_check_modules_pkg MATCHES ".*(>=|=|<=).*") |
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| 219 | |
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| 220 | # handle the operands |
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| 221 | if (_pkg_check_modules_pkg_op STREQUAL ">=") |
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| 222 | list(APPEND _pkg_check_modules_exist_query --atleast-version) |
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| 223 | endif(_pkg_check_modules_pkg_op STREQUAL ">=") |
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| 224 | |
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| 225 | if (_pkg_check_modules_pkg_op STREQUAL "=") |
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| 226 | list(APPEND _pkg_check_modules_exist_query --exact-version) |
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| 227 | endif(_pkg_check_modules_pkg_op STREQUAL "=") |
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| 228 | |
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| 229 | if (_pkg_check_modules_pkg_op STREQUAL "<=") |
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| 230 | list(APPEND _pkg_check_modules_exist_query --max-version) |
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| 231 | endif(_pkg_check_modules_pkg_op STREQUAL "<=") |
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| 232 | |
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| 233 | # create the final query which is of the format: |
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| 234 | # * --atleast-version <version> <pkg-name> |
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| 235 | # * --exact-version <version> <pkg-name> |
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| 236 | # * --max-version <version> <pkg-name> |
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| 237 | # * --exists <pkg-name> |
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| 238 | if (_pkg_check_modules_pkg_op) |
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| 239 | list(APPEND _pkg_check_modules_exist_query "${_pkg_check_modules_pkg_ver}") |
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| 240 | else(_pkg_check_modules_pkg_op) |
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| 241 | list(APPEND _pkg_check_modules_exist_query --exists) |
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| 242 | endif(_pkg_check_modules_pkg_op) |
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| 243 | |
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| 244 | _pkgconfig_unset(${_prefix}_${_pkg_check_modules_pkg_name}_VERSION) |
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| 245 | _pkgconfig_unset(${_prefix}_${_pkg_check_modules_pkg_name}_PREFIX) |
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| 246 | _pkgconfig_unset(${_prefix}_${_pkg_check_modules_pkg_name}_INCLUDEDIR) |
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| 247 | _pkgconfig_unset(${_prefix}_${_pkg_check_modules_pkg_name}_LIBDIR) |
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| 248 | |
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| 249 | list(APPEND _pkg_check_modules_exist_query "${_pkg_check_modules_pkg_name}") |
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| 250 | list(APPEND _pkg_check_modules_packages "${_pkg_check_modules_pkg_name}") |
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| 251 | |
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| 252 | # execute the query |
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| 253 | execute_process( |
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| 254 | COMMAND ${PKG_CONFIG_EXECUTABLE} ${_pkg_check_modules_exist_query} |
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| 255 | RESULT_VARIABLE _pkgconfig_retval) |
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| 256 | |
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| 257 | # evaluate result and tell failures |
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| 258 | if (_pkgconfig_retval) |
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| 259 | if(NOT ${_is_silent}) |
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| 260 | message(STATUS " package '${_pkg_check_modules_pkg}' not found") |
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| 261 | endif(NOT ${_is_silent}) |
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| 262 | |
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| 263 | set(_pkg_check_modules_failed 1) |
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| 264 | endif(_pkgconfig_retval) |
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| 265 | endforeach(_pkg_check_modules_pkg) |
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| 266 | |
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| 267 | if(_pkg_check_modules_failed) |
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| 268 | # fail when requested |
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| 269 | if (${_is_required}) |
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| 270 | message(SEND_ERROR "A required package was not found") |
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| 271 | endif (${_is_required}) |
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| 272 | else(_pkg_check_modules_failed) |
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| 273 | # when we are here, we checked whether requested modules |
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| 274 | # exist. Now, go through them and set variables |
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| 275 | |
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| 276 | _pkgconfig_set(${_prefix}_FOUND 1) |
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| 277 | list(LENGTH _pkg_check_modules_packages pkg_count) |
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| 278 | |
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| 279 | # iterate through all modules again and set individual variables |
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| 280 | foreach (_pkg_check_modules_pkg ${_pkg_check_modules_packages}) |
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| 281 | # handle case when there is only one package required |
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| 282 | if (pkg_count EQUAL 1) |
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| 283 | set(_pkg_check_prefix "${_prefix}") |
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| 284 | else(pkg_count EQUAL 1) |
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| 285 | set(_pkg_check_prefix "${_prefix}_${_pkg_check_modules_pkg}") |
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| 286 | endif(pkg_count EQUAL 1) |
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| 287 | |
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| 288 | _pkgconfig_invoke(${_pkg_check_modules_pkg} "${_pkg_check_prefix}" VERSION "" --modversion ) |
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| 289 | _pkgconfig_invoke(${_pkg_check_modules_pkg} "${_pkg_check_prefix}" PREFIX "" --variable=prefix ) |
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| 290 | _pkgconfig_invoke(${_pkg_check_modules_pkg} "${_pkg_check_prefix}" INCLUDEDIR "" --variable=includedir ) |
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| 291 | _pkgconfig_invoke(${_pkg_check_modules_pkg} "${_pkg_check_prefix}" LIBDIR "" --variable=libdir ) |
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| 292 | |
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| 293 | message(STATUS " found ${_pkg_check_modules_pkg}, version ${_pkgconfig_VERSION}") |
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| 294 | endforeach(_pkg_check_modules_pkg) |
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| 295 | |
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| 296 | # set variables which are combined for multiple modules |
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| 297 | _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" LIBRARIES "(^| )-l" --libs-only-l ) |
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| 298 | _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" LIBRARY_DIRS "(^| )-L" --libs-only-L ) |
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| 299 | _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" LDFLAGS "" --libs ) |
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| 300 | _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" LDFLAGS_OTHER "" --libs-only-other ) |
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| 301 | |
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| 302 | _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" INCLUDE_DIRS "(^| )-I" --cflags-only-I ) |
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| 303 | _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" CFLAGS "" --cflags ) |
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| 304 | _pkgconfig_invoke_dyn("${_pkg_check_modules_packages}" "${_prefix}" CFLAGS_OTHER "" --cflags-only-other ) |
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| 305 | endif(_pkg_check_modules_failed) |
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| 306 | else(PKG_CONFIG_EXECUTABLE) |
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| 307 | if (${_is_required}) |
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| 308 | message(SEND_ERROR "pkg-config tool not found") |
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| 309 | endif (${_is_required}) |
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| 310 | endif(PKG_CONFIG_EXECUTABLE) |
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| 311 | endmacro(_pkg_check_modules_internal) |
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| 312 | |
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| 313 | ### |
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| 314 | ### User visible macros start here |
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| 315 | ### |
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| 316 | |
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| 317 | ### |
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| 318 | macro(pkg_check_modules _prefix _module0) |
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| 319 | # check cached value |
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| 320 | if (NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION}) |
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| 321 | _pkgconfig_parse_options (_pkg_modules _pkg_is_required "${_module0}" ${ARGN}) |
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| 322 | _pkg_check_modules_internal("${_pkg_is_required}" 0 "${_prefix}" ${_pkg_modules}) |
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| 323 | |
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| 324 | _pkgconfig_set(__pkg_config_checked_${_prefix} ${PKG_CONFIG_VERSION}) |
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| 325 | endif(NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION}) |
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| 326 | endmacro(pkg_check_modules) |
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| 327 | |
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| 328 | ### |
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| 329 | macro(pkg_search_module _prefix _module0) |
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| 330 | # check cached value |
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| 331 | if (NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION}) |
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| 332 | set(_pkg_modules_found 0) |
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| 333 | _pkgconfig_parse_options(_pkg_modules_alt _pkg_is_required "${_module0}" ${ARGN}) |
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| 334 | |
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| 335 | message(STATUS "checking for one of the modules '${_pkg_modules_alt}'") |
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| 336 | |
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| 337 | # iterate through all modules and stop at the first working one. |
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| 338 | foreach(_pkg_alt ${_pkg_modules_alt}) |
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| 339 | if(NOT _pkg_modules_found) |
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| 340 | _pkg_check_modules_internal(0 1 "${_prefix}" "${_pkg_alt}") |
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| 341 | endif(NOT _pkg_modules_found) |
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| 342 | |
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| 343 | if (${_prefix}_FOUND) |
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| 344 | set(_pkg_modules_found 1) |
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| 345 | endif(${_prefix}_FOUND) |
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| 346 | endforeach(_pkg_alt) |
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| 347 | |
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| 348 | if (NOT ${_prefix}_FOUND) |
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| 349 | if(${_pkg_is_required}) |
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| 350 | message(SEND_ERROR "None of the required '${_pkg_modules_alt}' found") |
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| 351 | endif(${_pkg_is_required}) |
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| 352 | endif(NOT ${_prefix}_FOUND) |
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| 353 | |
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| 354 | _pkgconfig_set(__pkg_config_checked_${_prefix} ${PKG_CONFIG_VERSION}) |
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| 355 | endif(NOT DEFINED __pkg_config_checked_${_prefix} OR __pkg_config_checked_${_prefix} LESS ${PKG_CONFIG_VERSION}) |
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| 356 | endmacro(pkg_search_module) |
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| 357 | |
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| 358 | ### Local Variables: |
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| 359 | ### mode: cmake |
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| 360 | ### End: |
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