CMake/Modules/FindGTK2.cmake

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# - FindGTK2.cmake
# This module can find the GTK2 widget libraries and several of its other
# optional components like gtkmm, glade, and glademm.
#
# NOTE: If you intend to use version checking, CMake 2.6.2 or later is
# required.
#
# Specify one or more of the following components
# as you call this find module. See example below.
#
# gtk
# gtkmm
# glade
# glademm
#
# The following variables will be defined for your use
#
# GTK2_FOUND - Were all of your specified components found?
# GTK2_INCLUDE_DIRS - All include directories
# GTK2_LIBRARIES - All libraries
#
# GTK2_VERSION - The version of GTK2 found (x.y.z)
# GTK2_MAJOR_VERSION - The major version of GTK2
# GTK2_MINOR_VERSION - The minor version of GTK2
# GTK2_PATCH_VERSION - The patch version of GTK2
#
# Optional variables you can define prior to calling this module:
#
# GTK2_DEBUG - Enables verbose debugging of the module
# GTK2_SKIP_MARK_AS_ADVANCED - Disable marking cache variables as advanced
# GTK2_ADDITIONAL_SUFFIXES - Allows defining additional directories to
# search for include files
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#
#=================
# Example Usage:
#
# Call find_package() once, here are some examples to pick from:
#
# Require GTK 2.6 or later
# find_package(GTK2 2.6 REQUIRED gtk)
#
# Require GTK 2.10 or later and Glade
# find_package(GTK2 2.10 REQUIRED gtk glade)
#
# Search for GTK/GTKMM 2.8 or later
# find_package(GTK2 2.8 COMPONENTS gtk gtkmm)
#
# if(GTK2_FOUND)
# include_directories(${GTK2_INCLUDE_DIRS})
# add_executable(mygui mygui.cc)
# target_link_libraries(mygui ${GTK2_LIBRARIES})
# endif()
#
#=============================================================================
# Copyright 2009 Kitware, Inc.
# Copyright 2008-2009 Philip Lowman <philip@yhbt.com>
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
# Version 1.3 (11/9/2010) (CMake 2.8.4)
# * 11429: Add support for detecting GTK2 built with Visual Studio 10.
# Thanks to Vincent Levesque for the patch.
# Version 1.2 (8/30/2010) (CMake 2.8.3)
# * Merge patch for detecting gdk-pixbuf library (split off
# from core GTK in 2.21). Thanks to Vincent Untz for the patch
# and Ricardo Cruz for the heads up.
# Version 1.1 (8/19/2010) (CMake 2.8.3)
# * Add support for detecting GTK2 under macports (thanks to Gary Kramlich)
# Version 1.0 (8/12/2010) (CMake 2.8.3)
# * Add support for detecting new pangommconfig.h header file
# (Thanks to Sune Vuorela & the Debian Project for the patch)
# * Add support for detecting fontconfig.h header
# * Call find_package(Freetype) since it's required
# * Add support for allowing users to add additional library directories
# via the GTK2_ADDITIONAL_SUFFIXES variable (kind of a future-kludge in
# case the GTK developers change versions on any of the directories in the
# future).
# Version 0.8 (1/4/2010)
# * Get module working under MacOSX fink by adding /sw/include, /sw/lib
# to PATHS and the gobject library
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# Version 0.7 (3/22/09)
# * Checked into CMake CVS
# * Added versioning support
# * Module now defaults to searching for GTK if COMPONENTS not specified.
# * Added HKCU prior to HKLM registry key and GTKMM specific environment
# variable as per mailing list discussion.
# * Added lib64 to include search path and a few other search paths where GTK
# may be installed on Unix systems.
# * Switched to lowercase CMake commands
# * Prefaced internal variables with _GTK2 to prevent collision
# * Changed internal macros to functions
# * Enhanced documentation
# Version 0.6 (1/8/08)
# Added GTK2_SKIP_MARK_AS_ADVANCED option
# Version 0.5 (12/19/08)
# Second release to cmake mailing list
#=============================================================
# _GTK2_GET_VERSION
# Internal function to parse the version number in gtkversion.h
# _OUT_major = Major version number
# _OUT_minor = Minor version number
# _OUT_micro = Micro version number
# _gtkversion_hdr = Header file to parse
#=============================================================
function(_GTK2_GET_VERSION _OUT_major _OUT_minor _OUT_micro _gtkversion_hdr)
file(READ ${_gtkversion_hdr} _contents)
if(_contents)
string(REGEX REPLACE ".*#define GTK_MAJOR_VERSION[ \t]+\\(([0-9]+)\\).*" "\\1" ${_OUT_major} "${_contents}")
string(REGEX REPLACE ".*#define GTK_MINOR_VERSION[ \t]+\\(([0-9]+)\\).*" "\\1" ${_OUT_minor} "${_contents}")
string(REGEX REPLACE ".*#define GTK_MICRO_VERSION[ \t]+\\(([0-9]+)\\).*" "\\1" ${_OUT_micro} "${_contents}")
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if(NOT ${_OUT_major} MATCHES "[0-9]+")
message(FATAL_ERROR "Version parsing failed for GTK2_MAJOR_VERSION!")
endif()
if(NOT ${_OUT_minor} MATCHES "[0-9]+")
message(FATAL_ERROR "Version parsing failed for GTK2_MINOR_VERSION!")
endif()
if(NOT ${_OUT_micro} MATCHES "[0-9]+")
message(FATAL_ERROR "Version parsing failed for GTK2_MICRO_VERSION!")
endif()
set(${_OUT_major} ${${_OUT_major}} PARENT_SCOPE)
set(${_OUT_minor} ${${_OUT_minor}} PARENT_SCOPE)
set(${_OUT_micro} ${${_OUT_micro}} PARENT_SCOPE)
else()
message(FATAL_ERROR "Include file ${_gtkversion_hdr} does not exist")
endif()
endfunction()
#=============================================================
# _GTK2_FIND_INCLUDE_DIR
# Internal function to find the GTK include directories
# _var = variable to set
# _hdr = header file to look for
#=============================================================
function(_GTK2_FIND_INCLUDE_DIR _var _hdr)
if(GTK2_DEBUG)
message(STATUS "[FindGTK2.cmake:${CMAKE_CURRENT_LIST_LINE}] "
"_GTK2_FIND_INCLUDE_DIR( ${_var} ${_hdr} )")
endif()
set(_relatives
# If these ever change, things will break.
${GTK2_ADDITIONAL_SUFFIXES}
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glibmm-2.4
glib-2.0
atk-1.0
atkmm-1.6
cairo
cairomm-1.0
gdk-pixbuf-2.0
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gdkmm-2.4
giomm-2.4
gtk-2.0
gtkmm-2.4
libglade-2.0
libglademm-2.4
pango-1.0
pangomm-1.4
sigc++-2.0
)
set(_suffixes)
foreach(_d ${_relatives})
list(APPEND _suffixes ${_d})
list(APPEND _suffixes ${_d}/include) # for /usr/lib/gtk-2.0/include
endforeach()
if(GTK2_DEBUG)
message(STATUS "[FindGTK2.cmake:${CMAKE_CURRENT_LIST_LINE}] "
"include suffixes = ${_suffixes}")
endif()
find_path(${_var} ${_hdr}
PATHS
/usr/local/lib64
/usr/local/lib
/usr/lib64
/usr/lib
/opt/gnome/include
/opt/gnome/lib
/opt/openwin/include
/usr/openwin/lib
/sw/include
/sw/lib
/opt/local/include
/opt/local/lib
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$ENV{GTKMM_BASEPATH}/include
$ENV{GTKMM_BASEPATH}/lib
[HKEY_CURRENT_USER\\SOFTWARE\\gtkmm\\2.4;Path]/include
[HKEY_CURRENT_USER\\SOFTWARE\\gtkmm\\2.4;Path]/lib
[HKEY_LOCAL_MACHINE\\SOFTWARE\\gtkmm\\2.4;Path]/include
[HKEY_LOCAL_MACHINE\\SOFTWARE\\gtkmm\\2.4;Path]/lib
PATH_SUFFIXES
${_suffixes}
)
if(${_var})
set(GTK2_INCLUDE_DIRS ${GTK2_INCLUDE_DIRS} ${${_var}} PARENT_SCOPE)
if(NOT GTK2_SKIP_MARK_AS_ADVANCED)
mark_as_advanced(${_var})
endif()
endif()
endfunction()
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#=============================================================
# _GTK2_FIND_LIBRARY
# Internal function to find libraries packaged with GTK2
# _var = library variable to create
#=============================================================
function(_GTK2_FIND_LIBRARY _var _lib _expand_vc _append_version)
if(GTK2_DEBUG)
message(STATUS "[FindGTK2.cmake:${CMAKE_CURRENT_LIST_LINE}] "
"_GTK2_FIND_LIBRARY( ${_var} ${_lib} ${_expand_vc} ${_append_version} )")
endif()
# Not GTK versions per se but the versions encoded into Windows
# import libraries (GtkMM 2.14.1 has a gtkmm-vc80-2_4.lib for example)
# Also the MSVC libraries use _ for . (this is handled below)
set(_versions 2.20 2.18 2.16 2.14 2.12
2.10 2.8 2.6 2.4 2.2 2.0
1.20 1.18 1.16 1.14 1.12
1.10 1.8 1.6 1.4 1.2 1.0)
set(_library)
set(_library_d)
set(_library ${_lib})
if(_expand_vc AND MSVC)
# Add vc80/vc90/vc100 midfixes
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if(MSVC80)
set(_library ${_library}-vc80)
elseif(MSVC90)
set(_library ${_library}-vc90)
elseif(MSVC10)
set(_library ${_library}-vc100)
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endif()
set(_library_d ${_library}-d)
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endif()
if(GTK2_DEBUG)
message(STATUS "[FindGTK2.cmake:${CMAKE_CURRENT_LIST_LINE}] "
"After midfix addition = ${_library} and ${_library_d}")
endif()
set(_lib_list)
set(_libd_list)
if(_append_version)
foreach(_ver ${_versions})
list(APPEND _lib_list "${_library}-${_ver}")
list(APPEND _libd_list "${_library_d}-${_ver}")
endforeach()
else()
set(_lib_list ${_library})
set(_libd_list ${_library_d})
endif()
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if(GTK2_DEBUG)
message(STATUS "[FindGTK2.cmake:${CMAKE_CURRENT_LIST_LINE}] "
"library list = ${_lib_list} and library debug list = ${_libd_list}")
endif()
# For some silly reason the MSVC libraries use _ instead of .
# in the version fields
if(_expand_vc AND MSVC)
set(_no_dots_lib_list)
set(_no_dots_libd_list)
foreach(_l ${_lib_list})
string(REPLACE "." "_" _no_dots_library ${_l})
list(APPEND _no_dots_lib_list ${_no_dots_library})
endforeach()
# And for debug
set(_no_dots_libsd_list)
foreach(_l ${_libd_list})
string(REPLACE "." "_" _no_dots_libraryd ${_l})
list(APPEND _no_dots_libd_list ${_no_dots_libraryd})
endforeach()
# Copy list back to original names
set(_lib_list ${_no_dots_lib_list})
set(_libd_list ${_no_dots_libd_list})
endif()
if(GTK2_DEBUG)
message(STATUS "[FindGTK2.cmake:${CMAKE_CURRENT_LIST_LINE}] "
"While searching for ${_var}, our proposed library list is ${_lib_list}")
endif()
find_library(${_var}
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NAMES ${_lib_list}
PATHS
/opt/gnome/lib
/usr/openwin/lib
/sw/lib
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$ENV{GTKMM_BASEPATH}/lib
[HKEY_CURRENT_USER\\SOFTWARE\\gtkmm\\2.4;Path]/lib
[HKEY_LOCAL_MACHINE\\SOFTWARE\\gtkmm\\2.4;Path]/lib
)
if(_expand_vc AND MSVC)
if(GTK2_DEBUG)
message(STATUS "[FindGTK2.cmake:${CMAKE_CURRENT_LIST_LINE}] "
"While searching for ${_var}_DEBUG our proposed library list is ${_libd_list}")
endif()
find_library(${_var}_DEBUG
NAMES ${_libd_list}
PATHS
$ENV{GTKMM_BASEPATH}/lib
[HKEY_CURRENT_USER\\SOFTWARE\\gtkmm\\2.4;Path]/lib
[HKEY_LOCAL_MACHINE\\SOFTWARE\\gtkmm\\2.4;Path]/lib
)
if(${_var} AND ${_var}_DEBUG)
if(NOT GTK2_SKIP_MARK_AS_ADVANCED)
mark_as_advanced(${_var}_DEBUG)
endif()
set(GTK2_LIBRARIES ${GTK2_LIBRARIES} optimized ${${_var}} debug ${${_var}_DEBUG})
set(GTK2_LIBRARIES ${GTK2_LIBRARIES} PARENT_SCOPE)
endif()
else()
if(NOT GTK2_SKIP_MARK_AS_ADVANCED)
mark_as_advanced(${_var})
endif()
set(GTK2_LIBRARIES ${GTK2_LIBRARIES} ${${_var}})
set(GTK2_LIBRARIES ${GTK2_LIBRARIES} PARENT_SCOPE)
# Set debug to release
set(${_var}_DEBUG ${${_var}})
set(${_var}_DEBUG ${${_var}} PARENT_SCOPE)
endif()
endfunction()
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#=============================================================
#
# main()
#
set(GTK2_FOUND)
set(GTK2_INCLUDE_DIRS)
set(GTK2_LIBRARIES)
if(NOT GTK2_FIND_COMPONENTS)
# Assume they only want GTK
set(GTK2_FIND_COMPONENTS gtk)
endif()
#
# If specified, enforce version number
#
if(GTK2_FIND_VERSION)
cmake_minimum_required(VERSION 2.6.2)
set(GTK2_FAILED_VERSION_CHECK true)
if(GTK2_DEBUG)
message(STATUS "[FindGTK2.cmake:${CMAKE_CURRENT_LIST_LINE}] "
"Searching for version ${GTK2_FIND_VERSION}")
endif()
_GTK2_FIND_INCLUDE_DIR(GTK2_GTK_INCLUDE_DIR gtk/gtk.h)
if(GTK2_GTK_INCLUDE_DIR)
_GTK2_GET_VERSION(GTK2_MAJOR_VERSION
GTK2_MINOR_VERSION
GTK2_PATCH_VERSION
${GTK2_GTK_INCLUDE_DIR}/gtk/gtkversion.h)
set(GTK2_VERSION
${GTK2_MAJOR_VERSION}.${GTK2_MINOR_VERSION}.${GTK2_PATCH_VERSION})
if(GTK2_FIND_VERSION_EXACT)
if(GTK2_VERSION VERSION_EQUAL GTK2_FIND_VERSION)
set(GTK2_FAILED_VERSION_CHECK false)
endif()
else()
if(GTK2_VERSION VERSION_EQUAL GTK2_FIND_VERSION OR
GTK2_VERSION VERSION_GREATER GTK2_FIND_VERSION)
set(GTK2_FAILED_VERSION_CHECK false)
endif()
endif()
else()
# If we can't find the GTK include dir, we can't do version checking
if(GTK2_FIND_REQUIRED AND NOT GTK2_FIND_QUIETLY)
message(FATAL_ERROR "Could not find GTK2 include directory")
endif()
return()
endif()
if(GTK2_FAILED_VERSION_CHECK)
if(GTK2_FIND_REQUIRED AND NOT GTK2_FIND_QUIETLY)
if(GTK2_FIND_VERSION_EXACT)
message(FATAL_ERROR "GTK2 version check failed. Version ${GTK2_VERSION} was found, version ${GTK2_FIND_VERSION} is needed exactly.")
else()
message(FATAL_ERROR "GTK2 version check failed. Version ${GTK2_VERSION} was found, at least version ${GTK2_FIND_VERSION} is required")
endif()
endif()
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# If the version check fails, exit out of the module here
return()
endif()
endif()
#
# Find all components
#
find_package(Freetype)
list(APPEND GTK2_INCLUDE_DIRS ${FREETYPE_INCLUDE_DIRS})
list(APPEND GTK2_LIBRARIES ${FREETYPE_LIBRARIES})
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foreach(_GTK2_component ${GTK2_FIND_COMPONENTS})
if(_GTK2_component STREQUAL "gtk")
_GTK2_FIND_INCLUDE_DIR(GTK2_GLIB_INCLUDE_DIR glib.h)
_GTK2_FIND_INCLUDE_DIR(GTK2_GLIBCONFIG_INCLUDE_DIR glibconfig.h)
_GTK2_FIND_LIBRARY (GTK2_GLIB_LIBRARY glib false true)
_GTK2_FIND_INCLUDE_DIR(GTK2_GOBJECT_INCLUDE_DIR gobject/gobject.h)
_GTK2_FIND_LIBRARY (GTK2_GOBJECT_LIBRARY gobject false true)
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_GTK2_FIND_INCLUDE_DIR(GTK2_GDK_PIXBUF_INCLUDE_DIR gdk-pixbuf/gdk-pixbuf.h)
_GTK2_FIND_LIBRARY (GTK2_GDK_PIXBUF_LIBRARY gdk_pixbuf false true)
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_GTK2_FIND_INCLUDE_DIR(GTK2_GDK_INCLUDE_DIR gdk/gdk.h)
_GTK2_FIND_INCLUDE_DIR(GTK2_GDKCONFIG_INCLUDE_DIR gdkconfig.h)
_GTK2_FIND_INCLUDE_DIR(GTK2_GTK_INCLUDE_DIR gtk/gtk.h)
if(UNIX)
_GTK2_FIND_LIBRARY (GTK2_GDK_LIBRARY gdk-x11 false true)
_GTK2_FIND_LIBRARY (GTK2_GTK_LIBRARY gtk-x11 false true)
else()
_GTK2_FIND_LIBRARY (GTK2_GDK_LIBRARY gdk-win32 false true)
_GTK2_FIND_LIBRARY (GTK2_GTK_LIBRARY gtk-win32 false true)
endif()
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_GTK2_FIND_INCLUDE_DIR(GTK2_CAIRO_INCLUDE_DIR cairo.h)
_GTK2_FIND_LIBRARY (GTK2_CAIRO_LIBRARY cairo false false)
_GTK2_FIND_INCLUDE_DIR(GTK2_FONTCONFIG_INCLUDE_DIR fontconfig/fontconfig.h)
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_GTK2_FIND_INCLUDE_DIR(GTK2_PANGO_INCLUDE_DIR pango/pango.h)
_GTK2_FIND_LIBRARY (GTK2_PANGO_LIBRARY pango false true)
_GTK2_FIND_INCLUDE_DIR(GTK2_ATK_INCLUDE_DIR atk/atk.h)
_GTK2_FIND_LIBRARY (GTK2_ATK_LIBRARY atk false true)
elseif(_GTK2_component STREQUAL "gtkmm")
_GTK2_FIND_INCLUDE_DIR(GTK2_GLIBMM_INCLUDE_DIR glibmm.h)
_GTK2_FIND_INCLUDE_DIR(GTK2_GLIBMMCONFIG_INCLUDE_DIR glibmmconfig.h)
_GTK2_FIND_LIBRARY (GTK2_GLIBMM_LIBRARY glibmm true true)
_GTK2_FIND_INCLUDE_DIR(GTK2_GDKMM_INCLUDE_DIR gdkmm.h)
_GTK2_FIND_INCLUDE_DIR(GTK2_GDKMMCONFIG_INCLUDE_DIR gdkmmconfig.h)
_GTK2_FIND_LIBRARY (GTK2_GDKMM_LIBRARY gdkmm true true)
_GTK2_FIND_INCLUDE_DIR(GTK2_GTKMM_INCLUDE_DIR gtkmm.h)
_GTK2_FIND_INCLUDE_DIR(GTK2_GTKMMCONFIG_INCLUDE_DIR gtkmmconfig.h)
_GTK2_FIND_LIBRARY (GTK2_GTKMM_LIBRARY gtkmm true true)
_GTK2_FIND_INCLUDE_DIR(GTK2_CAIROMM_INCLUDE_DIR cairomm/cairomm.h)
_GTK2_FIND_LIBRARY (GTK2_CAIROMM_LIBRARY cairomm true true)
_GTK2_FIND_INCLUDE_DIR(GTK2_PANGOMM_INCLUDE_DIR pangomm.h)
_GTK2_FIND_INCLUDE_DIR(GTK2_PANGOMMCONFIG_INCLUDE_DIR pangommconfig.h)
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_GTK2_FIND_LIBRARY (GTK2_PANGOMM_LIBRARY pangomm true true)
_GTK2_FIND_INCLUDE_DIR(GTK2_SIGC++_INCLUDE_DIR sigc++/sigc++.h)
_GTK2_FIND_INCLUDE_DIR(GTK2_SIGC++CONFIG_INCLUDE_DIR sigc++config.h)
_GTK2_FIND_LIBRARY (GTK2_SIGC++_LIBRARY sigc true true)
_GTK2_FIND_INCLUDE_DIR(GTK2_GIOMM_INCLUDE_DIR giomm.h)
_GTK2_FIND_INCLUDE_DIR(GTK2_GIOMMCONFIG_INCLUDE_DIR giommconfig.h)
_GTK2_FIND_LIBRARY (GTK2_GIOMM_LIBRARY giomm true true)
_GTK2_FIND_INCLUDE_DIR(GTK2_ATKMM_INCLUDE_DIR atkmm.h)
_GTK2_FIND_LIBRARY (GTK2_ATKMM_LIBRARY atkmm true true)
elseif(_GTK2_component STREQUAL "glade")
_GTK2_FIND_INCLUDE_DIR(GTK2_GLADE_INCLUDE_DIR glade/glade.h)
_GTK2_FIND_LIBRARY (GTK2_GLADE_LIBRARY glade false true)
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elseif(_GTK2_component STREQUAL "glademm")
_GTK2_FIND_INCLUDE_DIR(GTK2_GLADEMM_INCLUDE_DIR libglademm.h)
_GTK2_FIND_INCLUDE_DIR(GTK2_GLADEMMCONFIG_INCLUDE_DIR libglademmconfig.h)
_GTK2_FIND_LIBRARY (GTK2_GLADEMM_LIBRARY glademm true true)
else()
message(FATAL_ERROR "Unknown GTK2 component ${_component}")
endif()
endforeach()
#
# Solve for the GTK2 version if we haven't already
#
if(NOT GTK2_FIND_VERSION AND GTK2_GTK_INCLUDE_DIR)
_GTK2_GET_VERSION(GTK2_MAJOR_VERSION
GTK2_MINOR_VERSION
GTK2_PATCH_VERSION
${GTK2_GTK_INCLUDE_DIR}/gtk/gtkversion.h)
set(GTK2_VERSION ${GTK2_MAJOR_VERSION}.${GTK2_MINOR_VERSION}.${GTK2_PATCH_VERSION})
endif()
#
# Try to enforce components
#
set(_GTK2_did_we_find_everything true) # This gets set to GTK2_FOUND
Modules: Include builtin FindPackageHandleStandardArgs directly The FindPackageHandleStandardArgs module was originally created outside of CMake. It was added for CMake 2.6.0 by commit e118a627 (add a macro FIND_PACKAGE_HANDLE_STANDARD_ARGS..., 2007-07-18). However, it also proliferated into a number of other projects that at the time required only CMake 2.4 and thus could not depend on CMake to provide the module. CMake's own find modules started using the module in commit b5f656e0 (use the new FIND_PACKAGE_HANDLE_STANDARD_ARGS in some of the FindXXX modules..., 2007-07-18). Then commit d358cf5c (add 2nd, more powerful mode to find_package_handle_standard_args, 2010-07-29) added a new feature to the interface of the module that was fully optional and backward compatible with all existing users of the module. Later commit 5f183caa (FindZLIB: use the FPHSA version mode, 2010-08-04) and others shortly thereafter started using the new interface in CMake's own find modules. This change was also backward compatible because it was only an implementation detail within each module. Unforutnately these changes introduced a problem for projects that still have an old copy of FindPackageHandleStandardArgs in CMAKE_MODULE_PATH. When any such project uses one of CMake's builtin find modules the line include(FindPackageHandleStandardArgs) loads the copy from the project which does not have the new interface! Then the including find module tries to use the new interface with the old module and fails. Whether this breakage can be considered a backward incompatible change in CMake is debatable. The situation is analagous to copying a standard library header from one version of a compiler into a project and then observing problems when the next version of the compiler reports errors in its other headers that depend on its new version of the original header. Nevertheless it is a change to CMake that causes problems for projects that worked with previous versions. This problem was discovered during the 2.8.3 release candidate cycle. It is an instance of a more general problem with projects that provide their own versions of CMake modules when other CMake modules depend on them. At the time we resolved this instance of the problem with commit b0118402 (Use absolute path to FindPackageHandleStandardArgs.cmake everywhere, 2010-09-28) for the 2.8.3 release. In order to address the more general problem we introduced policy CMP0017 in commit db44848f (Prefer files from CMAKE_ROOT when including from CMAKE_ROOT, 2010-11-17). That change was followed by commit ce28737c (Remove usage of CMAKE_CURRENT_LIST_DIR now that we have CMP0017, 2010-12-20) which reverted the original workaround in favor of using the policy. However, existing project releases do not set the policy behavior to NEW and therefore still exhibit the problem. We introduced in commit a364daf1 (Allow users to specify defaults for unset policies, 2011-01-03) an option for users to build existing projects by adding -DCMAKE_POLICY_DEFAULT_CMP0017=NEW to the command line. Unfortunately this solution still does not allow such projects to build out of the box, and there is no good way to suggest the use of the new option. The only remaining solution to keep existing projects that exhibit this problem building is to restore the change originally made in commit b0118402 (Use absolute path to FindPackageHandleStandardArgs.cmake everywhere, 2010-09-28). This also avoids policy CMP0017 warnings for this particular instance of the problem the policy addresses.
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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foreach(_GTK2_component ${GTK2_FIND_COMPONENTS})
string(TOUPPER ${_GTK2_component} _COMPONENT_UPPER)
if(_GTK2_component STREQUAL "gtk")
FIND_PACKAGE_HANDLE_STANDARD_ARGS(GTK2_${_COMPONENT_UPPER} "Some or all of the gtk libraries were not found."
GTK2_GTK_LIBRARY
GTK2_GTK_INCLUDE_DIR
GTK2_GLIB_INCLUDE_DIR
GTK2_GLIBCONFIG_INCLUDE_DIR
GTK2_GLIB_LIBRARY
GTK2_GDK_INCLUDE_DIR
GTK2_GDKCONFIG_INCLUDE_DIR
GTK2_GDK_LIBRARY
)
elseif(_GTK2_component STREQUAL "gtkmm")
FIND_PACKAGE_HANDLE_STANDARD_ARGS(GTK2_${_COMPONENT_UPPER} "Some or all of the gtkmm libraries were not found."
GTK2_GTKMM_LIBRARY
GTK2_GTKMM_INCLUDE_DIR
GTK2_GTKMMCONFIG_INCLUDE_DIR
GTK2_GLIBMM_INCLUDE_DIR
GTK2_GLIBMMCONFIG_INCLUDE_DIR
GTK2_GLIBMM_LIBRARY
GTK2_GDKMM_INCLUDE_DIR
GTK2_GDKMMCONFIG_INCLUDE_DIR
GTK2_GDKMM_LIBRARY
)
elseif(_GTK2_component STREQUAL "glade")
FIND_PACKAGE_HANDLE_STANDARD_ARGS(GTK2_${_COMPONENT_UPPER} "The glade library was not found."
GTK2_GLADE_LIBRARY
GTK2_GLADE_INCLUDE_DIR
)
elseif(_GTK2_component STREQUAL "glademm")
FIND_PACKAGE_HANDLE_STANDARD_ARGS(GTK2_${_COMPONENT_UPPER} "The glademm library was not found."
GTK2_GLADEMM_LIBRARY
GTK2_GLADEMM_INCLUDE_DIR
GTK2_GLADEMMCONFIG_INCLUDE_DIR
)
endif()
if(NOT GTK2_${_COMPONENT_UPPER}_FOUND)
set(_GTK2_did_we_find_everything false)
endif()
endforeach()
if(_GTK2_did_we_find_everything AND NOT GTK2_VERSION_CHECK_FAILED)
set(GTK2_FOUND true)
else()
# Unset our variables.
set(GTK2_FOUND false)
set(GTK2_VERSION)
set(GTK2_VERSION_MAJOR)
set(GTK2_VERSION_MINOR)
set(GTK2_VERSION_PATCH)
set(GTK2_INCLUDE_DIRS)
set(GTK2_LIBRARIES)
endif()
if(GTK2_INCLUDE_DIRS)
list(REMOVE_DUPLICATES GTK2_INCLUDE_DIRS)
endif()