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Finding WxWidgets 3.0 from CMake

From Just in Time

My version of CMake (2.8.12.2) didn't find WxWidgets 3.0 after I compiled all libraries/dlls with mingw. Turns out that the included version of FindwxWidgets.cmake searches for library files with specific versions in their filename, and 3.0 is not among them. Specifically, it searches for filenames like 

      wxbase29${_UCD}${_DBG}

.The version below fixes that problem by providing a 30 version wherever a 29 version appears. You should be able to find this file in <cmake-install-dir>\share\cmake-2.8\Modules.

<source lang="text">

  1. - Find a wxWidgets (a.k.a., wxWindows) installation.
  2. This module finds if wxWidgets is installed and selects a default
  3. configuration to use. wxWidgets is a modular library. To specify the
  4. modules that you will use, you need to name them as components to
  5. the package:
  7. find_package(wxWidgets COMPONENTS core base ...)
  9. There are two search branches: a windows style and a unix style. For
  10. windows, the following variables are searched for and set to
  11. defaults in case of multiple choices. Change them if the defaults
  12. are not desired (i.e., these are the only variables you should
  13. change to select a configuration):
  15. wxWidgets_ROOT_DIR - Base wxWidgets directory
  16. (e.g., C:/wxWidgets-2.6.3).
  17. wxWidgets_LIB_DIR - Path to wxWidgets libraries
  18. (e.g., C:/wxWidgets-2.6.3/lib/vc_lib).
  19. wxWidgets_CONFIGURATION - Configuration to use
  20. (e.g., msw, mswd, mswu, mswunivud, etc.)
  21. wxWidgets_EXCLUDE_COMMON_LIBRARIES
  22. - Set to TRUE to exclude linking of
  23. commonly required libs (e.g., png tiff
  24. jpeg zlib regex expat).
  26. For unix style it uses the wx-config utility. You can select between
  27. debug/release, unicode/ansi, universal/non-universal, and
  28. static/shared in the QtDialog or ccmake interfaces by turning ON/OFF
  29. the following variables:
  31. wxWidgets_USE_DEBUG
  32. wxWidgets_USE_UNICODE
  33. wxWidgets_USE_UNIVERSAL
  34. wxWidgets_USE_STATIC
  36. There is also a wxWidgets_CONFIG_OPTIONS variable for all other
  37. options that need to be passed to the wx-config utility. For
  38. example, to use the base toolkit found in the /usr/local path, set
  39. the variable (before calling the FIND_PACKAGE command) as such:
  41. set(wxWidgets_CONFIG_OPTIONS --toolkit=base --prefix=/usr)
  43. The following are set after the configuration is done for both
  44. windows and unix style:
  46. wxWidgets_FOUND - Set to TRUE if wxWidgets was found.
  47. wxWidgets_INCLUDE_DIRS - Include directories for WIN32
  48. i.e., where to find "wx/wx.h" and
  49. "wx/setup.h"; possibly empty for unices.
  50. wxWidgets_LIBRARIES - Path to the wxWidgets libraries.
  51. wxWidgets_LIBRARY_DIRS - compile time link dirs, useful for
  52. rpath on UNIX. Typically an empty string
  53. in WIN32 environment.
  54. wxWidgets_DEFINITIONS - Contains defines required to compile/link
  55. against WX, e.g. WXUSINGDLL
  56. wxWidgets_DEFINITIONS_DEBUG- Contains defines required to compile/link
  57. against WX debug builds, e.g. __WXDEBUG__
  58. wxWidgets_CXX_FLAGS - Include dirs and compiler flags for
  59. unices, empty on WIN32. Essentially
  60. "`wx-config --cxxflags`".
  61. wxWidgets_USE_FILE - Convenience include file.
  63. Sample usage:
  64. # Note that for MinGW users the order of libs is important!
  65. find_package(wxWidgets COMPONENTS net gl core base)
  66. if(wxWidgets_FOUND)
  67. include(${wxWidgets_USE_FILE})
  68. # and for each of your dependent executable/library targets:
  69. target_link_libraries(<YourTarget> ${wxWidgets_LIBRARIES})
  70. endif()
  72. If wxWidgets is required (i.e., not an optional part):
  73. find_package(wxWidgets REQUIRED net gl core base)
  74. include(${wxWidgets_USE_FILE})
  75. # and for each of your dependent executable/library targets:
  76. target_link_libraries(<YourTarget> ${wxWidgets_LIBRARIES})
  1. =============================================================================
  2. Copyright 2004-2009 Kitware, Inc.
  3. Copyright 2007-2009 Miguel A. Figueroa-Villanueva <miguelf at ieee dot org>
  5. Distributed under the OSI-approved BSD License (the "License");
  6. see accompanying file Copyright.txt for details.
  8. This software is distributed WITHOUT ANY WARRANTY; without even the
  9. implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  10. See the License for more information.
  11. =============================================================================
  12. (To distribute this file outside of CMake, substitute the full
  13. License text for the above reference.)
  2. FIXME: check this and provide a correct sample usage...
  3. Remember to connect back to the upper text.
  4. Sample usage with monolithic wx build:
  6. find_package(wxWidgets COMPONENTS mono)
  7. ...
  1. NOTES
  3. This module has been tested on the WIN32 platform with wxWidgets
  4. 2.6.2, 2.6.3, and 2.5.3. However, it has been designed to
  5. easily extend support to all possible builds, e.g., static/shared,
  6. debug/release, unicode, universal, multilib/monolithic, etc..
  8. If you want to use the module and your build type is not supported
  9. out-of-the-box, please contact me to exchange information on how
  10. your system is setup and I'll try to add support for it.
  12. AUTHOR
  14. Miguel A. Figueroa-Villanueva (miguelf at ieee dot org).
  15. Jan Woetzel (jw at mip.informatik.uni-kiel.de).
  17. Based on previous works of:
  18. Jan Woetzel (FindwxWindows.cmake),
  19. Jorgen Bodde and Jerry Fath (FindwxWin.cmake).
  1. TODO/ideas
  3. (1) Option/Setting to use all available wx libs
  4. In contrast to expert developer who lists the
  5. minimal set of required libs in wxWidgets_USE_LIBS
  6. there is the newbie user:
  7. - who just wants to link against WX with more 'magic'
  8. - doesn't know the internal structure of WX or how it was built,
  9. in particular if it is monolithic or not
  10. - want to link against all available WX libs
  11. Basically, the intent here is to mimic what wx-config would do by
  12. default (i.e., `wx-config --libs`).
  14. Possible solution:
  15. Add a reserved keyword "std" that initializes to what wx-config
  16. would default to. If the user has not set the wxWidgets_USE_LIBS,
  17. default to "std" instead of "base core" as it is now. To implement
  18. "std" will basically boil down to a FOR_EACH lib-FOUND, but maybe
  19. checking whether a minimal set was found.


  1. FIXME: This and all the DBG_MSG calls should be removed after the
  2. module stabilizes.
  4. Helper macro to control the debugging output globally. There are
  5. two versions for controlling how verbose your output should be.

macro(DBG_MSG _MSG)

  1. message(STATUS
  2. "${CMAKE_CURRENT_LIST_FILE}(${CMAKE_CURRENT_LIST_LINE}): ${_MSG}")

endmacro() macro(DBG_MSG_V _MSG)

  1. message(STATUS
  2. "${CMAKE_CURRENT_LIST_FILE}(${CMAKE_CURRENT_LIST_LINE}): ${_MSG}")

endmacro()

  1. Clear return values in case the module is loaded more than once.

set(wxWidgets_FOUND FALSE) set(wxWidgets_INCLUDE_DIRS "") set(wxWidgets_LIBRARIES "") set(wxWidgets_LIBRARY_DIRS "") set(wxWidgets_CXX_FLAGS "")

  1. Using SYSTEM with INCLUDE_DIRECTORIES in conjunction with wxWidgets on
  2. the Mac produces compiler errors. Set wxWidgets_INCLUDE_DIRS_NO_SYSTEM
  3. to prevent UsewxWidgets.cmake from using SYSTEM.
  5. See cmake mailing list discussions for more info:
  6. http://www.cmake.org/pipermail/cmake/2008-April/021115.html
  7. http://www.cmake.org/pipermail/cmake/2008-April/021146.html

if(APPLE OR CMAKE_CXX_PLATFORM_ID MATCHES "OpenBSD") 

 set(wxWidgets_INCLUDE_DIRS_NO_SYSTEM 1)

endif()

  1. DEPRECATED: This is a patch to support the DEPRECATED use of
  2. wxWidgets_USE_LIBS.
  4. If wxWidgets_USE_LIBS is set:
  5. - if using <components>, then override wxWidgets_USE_LIBS
  6. - else set wxWidgets_FIND_COMPONENTS to wxWidgets_USE_LIBS

if(wxWidgets_USE_LIBS AND NOT wxWidgets_FIND_COMPONENTS) 

 set(wxWidgets_FIND_COMPONENTS ${wxWidgets_USE_LIBS})

endif() DBG_MSG("wxWidgets_FIND_COMPONENTS : ${wxWidgets_FIND_COMPONENTS}")

  1. Add the convenience use file if available.
  3. Get dir of this file which may reside in:
  4. - CMAKE_MAKE_ROOT/Modules on CMake installation
  5. - CMAKE_MODULE_PATH if user prefers his own specialized version

set(wxWidgets_USE_FILE "") get_filename_component( 

 wxWidgets_CURRENT_LIST_DIR ${CMAKE_CURRENT_LIST_FILE} PATH)
  1. Prefer an existing customized version, but the user might override
  2. the FindwxWidgets module and not the UsewxWidgets one.

if(EXISTS "${wxWidgets_CURRENT_LIST_DIR}/UsewxWidgets.cmake") 

 set(wxWidgets_USE_FILE
   "${wxWidgets_CURRENT_LIST_DIR}/UsewxWidgets.cmake")

else() 

 set(wxWidgets_USE_FILE UsewxWidgets)

endif()

  1. =====================================================================
  2. =====================================================================

if(WIN32 AND NOT CYGWIN AND NOT MSYS) 

 set(wxWidgets_FIND_STYLE "win32")

else() 

 if(UNIX OR MSYS)
   set(wxWidgets_FIND_STYLE "unix")
 endif()

endif()

  1. =====================================================================
  2. WIN32_FIND_STYLE
  3. =====================================================================

if(wxWidgets_FIND_STYLE STREQUAL "win32") 

 # Useful common wx libs needed by almost all components.
 set(wxWidgets_COMMON_LIBRARIES png tiff jpeg zlib regex expat)

 # DEPRECATED: Use find_package(wxWidgets COMPONENTS mono) instead.
 if(NOT wxWidgets_FIND_COMPONENTS)
   if(wxWidgets_USE_MONOLITHIC)
     set(wxWidgets_FIND_COMPONENTS mono)
   else()
     set(wxWidgets_FIND_COMPONENTS core base) # this is default
   endif()
 endif()

 # Add the common (usually required libs) unless
 # wxWidgets_EXCLUDE_COMMON_LIBRARIES has been set.
 if(NOT wxWidgets_EXCLUDE_COMMON_LIBRARIES)
   list(APPEND wxWidgets_FIND_COMPONENTS
     ${wxWidgets_COMMON_LIBRARIES})
 endif()

 #-------------------------------------------------------------------
 # WIN32: Helper MACROS
 #-------------------------------------------------------------------
 #
 # Get filename components for a configuration. For example,
 #   if _CONFIGURATION = mswunivud, then _UNV=univ, _UCD=u _DBG=d
 #   if _CONFIGURATION = mswu,      then _UNV="",   _UCD=u _DBG=""
 #
 macro(WX_GET_NAME_COMPONENTS _CONFIGURATION _UNV _UCD _DBG)
   string(REGEX MATCH "univ" ${_UNV} "${_CONFIGURATION}")
   string(REGEX REPLACE "msw.*(u)[d]*$" "u" ${_UCD} "${_CONFIGURATION}")
   if(${_UCD} STREQUAL ${_CONFIGURATION})
     set(${_UCD} "")
   endif()
   string(REGEX MATCH "d$" ${_DBG} "${_CONFIGURATION}")
 endmacro()

 #
 # Find libraries associated to a configuration.
 #
 macro(WX_FIND_LIBS _UNV _UCD _DBG)
   DBG_MSG_V("m_unv = ${_UNV}")
   DBG_MSG_V("m_ucd = ${_UCD}")
   DBG_MSG_V("m_dbg = ${_DBG}")

   # FIXME: What if both regex libs are available. regex should be
   # found outside the loop and only wx${LIB}${_UCD}${_DBG}.
   # Find wxWidgets common libraries.
   foreach(LIB ${wxWidgets_COMMON_LIBRARIES} scintilla)
     find_library(WX_${LIB}${_DBG}
       NAMES
       wx${LIB}${_UCD}${_DBG} # for regex
       wx${LIB}${_DBG}
       PATHS ${WX_LIB_DIR}
       NO_DEFAULT_PATH
       )
     mark_as_advanced(WX_${LIB}${_DBG})
   endforeach()

   # Find wxWidgets multilib base libraries.
   find_library(WX_base${_DBG}
     NAMES
     wxbase30${_UCD}${_DBG}
     wxbase29${_UCD}${_DBG}
     wxbase28${_UCD}${_DBG}
     wxbase27${_UCD}${_DBG}
     wxbase26${_UCD}${_DBG}
     wxbase25${_UCD}${_DBG}
     PATHS ${WX_LIB_DIR}
     NO_DEFAULT_PATH
     )
   mark_as_advanced(WX_base${_DBG})
   foreach(LIB net odbc xml)
     find_library(WX_${LIB}${_DBG}
       NAMES
       wxbase30${_UCD}${_DBG}_${LIB}
       wxbase29${_UCD}${_DBG}_${LIB}
       wxbase28${_UCD}${_DBG}_${LIB}
       wxbase27${_UCD}${_DBG}_${LIB}
       wxbase26${_UCD}${_DBG}_${LIB}
       wxbase25${_UCD}${_DBG}_${LIB}
       PATHS ${WX_LIB_DIR}
       NO_DEFAULT_PATH
       )
     mark_as_advanced(WX_${LIB}${_DBG})
   endforeach()

   # Find wxWidgets monolithic library.
   find_library(WX_mono${_DBG}
     NAMES
     wxmsw${_UNV}30${_UCD}${_DBG}
     wxmsw${_UNV}29${_UCD}${_DBG}
     wxmsw${_UNV}28${_UCD}${_DBG}
     wxmsw${_UNV}27${_UCD}${_DBG}
     wxmsw${_UNV}26${_UCD}${_DBG}
     wxmsw${_UNV}25${_UCD}${_DBG}
     PATHS ${WX_LIB_DIR}
     NO_DEFAULT_PATH
     )
   mark_as_advanced(WX_mono${_DBG})

   # Find wxWidgets multilib libraries.
   foreach(LIB core adv aui html media xrc dbgrid gl qa richtext
               stc ribbon propgrid webview)
     find_library(WX_${LIB}${_DBG}
       NAMES
       wxmsw${_UNV}30${_UCD}${_DBG}_${LIB}
       wxmsw${_UNV}29${_UCD}${_DBG}_${LIB}
       wxmsw${_UNV}28${_UCD}${_DBG}_${LIB}
       wxmsw${_UNV}27${_UCD}${_DBG}_${LIB}
       wxmsw${_UNV}26${_UCD}${_DBG}_${LIB}
       wxmsw${_UNV}25${_UCD}${_DBG}_${LIB}
       PATHS ${WX_LIB_DIR}
       NO_DEFAULT_PATH
       )
     mark_as_advanced(WX_${LIB}${_DBG})
   endforeach()
 endmacro()

 #
 # Clear all library paths, so that FIND_LIBRARY refinds them.
 #
 # Clear a lib, reset its found flag, and mark as advanced.
 macro(WX_CLEAR_LIB _LIB)
   set(${_LIB} "${_LIB}-NOTFOUND" CACHE FILEPATH "Cleared." FORCE)
   set(${_LIB}_FOUND FALSE)
   mark_as_advanced(${_LIB})
 endmacro()
 # Clear all debug or release library paths (arguments are "d" or "").
 macro(WX_CLEAR_ALL_LIBS _DBG)
   # Clear wxWidgets common libraries.
   foreach(LIB ${wxWidgets_COMMON_LIBRARIES} scintilla)
     WX_CLEAR_LIB(WX_${LIB}${_DBG})
   endforeach()

   # Clear wxWidgets multilib base libraries.
   WX_CLEAR_LIB(WX_base${_DBG})
   foreach(LIB net odbc xml)
     WX_CLEAR_LIB(WX_${LIB}${_DBG})
   endforeach()

   # Clear wxWidgets monolithic library.
   WX_CLEAR_LIB(WX_mono${_DBG})

   # Clear wxWidgets multilib libraries.
   foreach(LIB core adv aui html media xrc dbgrid gl qa richtext
               stc ribbon propgrid)
     WX_CLEAR_LIB(WX_${LIB}${_DBG})
   endforeach()
 endmacro()
 # Clear all wxWidgets debug libraries.
 macro(WX_CLEAR_ALL_DBG_LIBS)
   WX_CLEAR_ALL_LIBS("d")
 endmacro()
 # Clear all wxWidgets release libraries.
 macro(WX_CLEAR_ALL_REL_LIBS)
   WX_CLEAR_ALL_LIBS("")
 endmacro()

 #
 # Set the wxWidgets_LIBRARIES variable.
 # Also, Sets output variable wxWidgets_FOUND to FALSE if it fails.
 #
 macro(WX_SET_LIBRARIES _LIBS _DBG)
   DBG_MSG_V("Looking for ${${_LIBS}}")
   if(WX_USE_REL_AND_DBG)
     foreach(LIB ${${_LIBS}})
       DBG_MSG_V("Searching for ${LIB} and ${LIB}d")
       DBG_MSG_V("WX_${LIB}  : ${WX_${LIB}}")
       DBG_MSG_V("WX_${LIB}d : ${WX_${LIB}d}")
       if(WX_${LIB} AND WX_${LIB}d)
         DBG_MSG_V("Found ${LIB} and ${LIB}d")
         list(APPEND wxWidgets_LIBRARIES
           debug ${WX_${LIB}d} optimized ${WX_${LIB}}
           )
       else()
         DBG_MSG_V("- not found due to missing WX_${LIB}=${WX_${LIB}} or WX_${LIB}d=${WX_${LIB}d}")
         set(wxWidgets_FOUND FALSE)
       endif()
     endforeach()
   else()
     foreach(LIB ${${_LIBS}})
       DBG_MSG_V("Searching for ${LIB}${_DBG}")
       DBG_MSG_V("WX_${LIB}${_DBG} : ${WX_${LIB}${_DBG}}")
       if(WX_${LIB}${_DBG})
         DBG_MSG_V("Found ${LIB}${_DBG}")
         list(APPEND wxWidgets_LIBRARIES ${WX_${LIB}${_DBG}})
       else()
         DBG_MSG_V(
           "- not found due to missing WX_${LIB}${_DBG}=${WX_${LIB}${_DBG}}")
         set(wxWidgets_FOUND FALSE)
       endif()
     endforeach()
   endif()

   DBG_MSG_V("OpenGL")
   list(FIND ${_LIBS} gl WX_USE_GL)
   if(NOT WX_USE_GL EQUAL -1)
     DBG_MSG_V("- is required.")
     list(APPEND wxWidgets_LIBRARIES opengl32 glu32)
   endif()

   list(APPEND wxWidgets_LIBRARIES winmm comctl32 rpcrt4 wsock32)
 endmacro()

 #-------------------------------------------------------------------
 # WIN32: Start actual work.
 #-------------------------------------------------------------------

 # Look for an installation tree.
 find_path(wxWidgets_ROOT_DIR
   NAMES include/wx/wx.h
   PATHS
     ENV wxWidgets_ROOT_DIR
     ENV WXWIN
     "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\wxWidgets_is1;Inno Setup: App Path]"  # WX 2.6.x
     C:/
     D:/
     ENV ProgramFiles
   PATH_SUFFIXES
     wxWidgets-2.9.4
     wxWidgets-2.9.3
     wxWidgets-2.9.2
     wxWidgets-2.9.1
     wxWidgets-2.9.0
     wxWidgets-2.8.9
     wxWidgets-2.8.8
     wxWidgets-2.8.7
     wxWidgets-2.8.6
     wxWidgets-2.8.5
     wxWidgets-2.8.4
     wxWidgets-2.8.3
     wxWidgets-2.8.2
     wxWidgets-2.8.1
     wxWidgets-2.8.0
     wxWidgets-2.7.4
     wxWidgets-2.7.3
     wxWidgets-2.7.2
     wxWidgets-2.7.1
     wxWidgets-2.7.0
     wxWidgets-2.7.0-1
     wxWidgets-2.6.4
     wxWidgets-2.6.3
     wxWidgets-2.6.2
     wxWidgets-2.6.1
     wxWidgets-2.5.4
     wxWidgets-2.5.3
     wxWidgets-2.5.2
     wxWidgets-2.5.1
     wxWidgets
   DOC "wxWidgets base/installation directory"
   )

 # If wxWidgets_ROOT_DIR changed, clear lib dir.
 if(NOT WX_ROOT_DIR STREQUAL wxWidgets_ROOT_DIR)
   set(WX_ROOT_DIR ${wxWidgets_ROOT_DIR}
       CACHE INTERNAL "wxWidgets_ROOT_DIR")
   set(wxWidgets_LIB_DIR "wxWidgets_LIB_DIR-NOTFOUND"
       CACHE PATH "Cleared." FORCE)
 endif()

 if(WX_ROOT_DIR)
   # Select one default tree inside the already determined wx tree.
   # Prefer static/shared order usually consistent with build
   # settings.
   if(MINGW)
     set(WX_LIB_DIR_PREFIX gcc)
   else()
     set(WX_LIB_DIR_PREFIX vc)
   endif()
   if(BUILD_SHARED_LIBS)
     find_path(wxWidgets_LIB_DIR
       NAMES
         msw/wx/setup.h
         mswd/wx/setup.h
         mswu/wx/setup.h
         mswud/wx/setup.h
         mswuniv/wx/setup.h
         mswunivd/wx/setup.h
         mswunivu/wx/setup.h
         mswunivud/wx/setup.h
       PATHS
       ${WX_ROOT_DIR}/lib/${WX_LIB_DIR_PREFIX}_dll   # prefer shared
       ${WX_ROOT_DIR}/lib/${WX_LIB_DIR_PREFIX}_lib
       DOC "Path to wxWidgets libraries"
       NO_DEFAULT_PATH
       )
   else()
     find_path(wxWidgets_LIB_DIR
       NAMES
         msw/wx/setup.h
         mswd/wx/setup.h
         mswu/wx/setup.h
         mswud/wx/setup.h
         mswuniv/wx/setup.h
         mswunivd/wx/setup.h
         mswunivu/wx/setup.h
         mswunivud/wx/setup.h
       PATHS
       ${WX_ROOT_DIR}/lib/${WX_LIB_DIR_PREFIX}_lib   # prefer static
       ${WX_ROOT_DIR}/lib/${WX_LIB_DIR_PREFIX}_dll
       DOC "Path to wxWidgets libraries"
       NO_DEFAULT_PATH
       )
   endif()

   # If wxWidgets_LIB_DIR changed, clear all libraries.
   if(NOT WX_LIB_DIR STREQUAL wxWidgets_LIB_DIR)
     set(WX_LIB_DIR ${wxWidgets_LIB_DIR} CACHE INTERNAL "wxWidgets_LIB_DIR")
     WX_CLEAR_ALL_DBG_LIBS()
     WX_CLEAR_ALL_REL_LIBS()
   endif()

   if(WX_LIB_DIR)
     # If building shared libs, define WXUSINGDLL to use dllimport.
     if(WX_LIB_DIR MATCHES ".*[dD][lL][lL].*")
       set(wxWidgets_DEFINITIONS WXUSINGDLL)
       DBG_MSG_V("detected SHARED/DLL tree WX_LIB_DIR=${WX_LIB_DIR}")
     endif()

     # Search for available configuration types.
     foreach(CFG mswunivud mswunivd mswud mswd mswunivu mswuniv mswu msw)
       set(WX_${CFG}_FOUND FALSE)
       if(EXISTS ${WX_LIB_DIR}/${CFG})
         list(APPEND WX_CONFIGURATION_LIST ${CFG})
         set(WX_${CFG}_FOUND TRUE)
         set(WX_CONFIGURATION ${CFG})
       endif()
     endforeach()
     DBG_MSG_V("WX_CONFIGURATION_LIST=${WX_CONFIGURATION_LIST}")

     if(WX_CONFIGURATION)
       set(wxWidgets_FOUND TRUE)

       # If the selected configuration wasn't found force the default
       # one. Otherwise, use it but still force a refresh for
       # updating the doc string with the current list of available
       # configurations.
       if(NOT WX_${wxWidgets_CONFIGURATION}_FOUND)
         set(wxWidgets_CONFIGURATION ${WX_CONFIGURATION} CACHE STRING
           "Set wxWidgets configuration (${WX_CONFIGURATION_LIST})" FORCE)
       else()
         set(wxWidgets_CONFIGURATION ${wxWidgets_CONFIGURATION} CACHE STRING
           "Set wxWidgets configuration (${WX_CONFIGURATION_LIST})" FORCE)
       endif()

       # If release config selected, and both release/debug exist.
       if(WX_${wxWidgets_CONFIGURATION}d_FOUND)
         option(wxWidgets_USE_REL_AND_DBG
           "Use release and debug configurations?" TRUE)
         set(WX_USE_REL_AND_DBG ${wxWidgets_USE_REL_AND_DBG})
       else()
         # If the option exists (already in cache), force it false.
         if(wxWidgets_USE_REL_AND_DBG)
           set(wxWidgets_USE_REL_AND_DBG FALSE CACHE BOOL
             "No ${wxWidgets_CONFIGURATION}d found." FORCE)
         endif()
         set(WX_USE_REL_AND_DBG FALSE)
       endif()

       # Get configuration parameters from the name.
       WX_GET_NAME_COMPONENTS(${wxWidgets_CONFIGURATION} UNV UCD DBG)

       # Set wxWidgets lib setup include directory.
       if(EXISTS ${WX_LIB_DIR}/${wxWidgets_CONFIGURATION}/wx/setup.h)
         set(wxWidgets_INCLUDE_DIRS
           ${WX_LIB_DIR}/${wxWidgets_CONFIGURATION})
       else()
         DBG_MSG("wxWidgets_FOUND FALSE because ${WX_LIB_DIR}/${wxWidgets_CONFIGURATION}/wx/setup.h does not exists.")
         set(wxWidgets_FOUND FALSE)
       endif()

       # Set wxWidgets main include directory.
       if(EXISTS ${WX_ROOT_DIR}/include/wx/wx.h)
         list(APPEND wxWidgets_INCLUDE_DIRS ${WX_ROOT_DIR}/include)
       else()
         DBG_MSG("wxWidgets_FOUND FALSE because WX_ROOT_DIR=${WX_ROOT_DIR} has no ${WX_ROOT_DIR}/include/wx/wx.h")
         set(wxWidgets_FOUND FALSE)
       endif()

       # Find wxWidgets libraries.
       WX_FIND_LIBS("${UNV}" "${UCD}" "${DBG}")
       if(WX_USE_REL_AND_DBG)
         WX_FIND_LIBS("${UNV}" "${UCD}" "d")
       endif()

       # Settings for requested libs (i.e., include dir, libraries, etc.).
       WX_SET_LIBRARIES(wxWidgets_FIND_COMPONENTS "${DBG}")

       # Add necessary definitions for unicode builds
       if("${UCD}" STREQUAL "u")
         list(APPEND wxWidgets_DEFINITIONS UNICODE _UNICODE)
       endif()

       # Add necessary definitions for debug builds
       set(wxWidgets_DEFINITIONS_DEBUG _DEBUG __WXDEBUG__)

     endif()
   endif()
 endif()
  1. =====================================================================
  2. UNIX_FIND_STYLE
  3. =====================================================================

else() 

 if(wxWidgets_FIND_STYLE STREQUAL "unix")
   #-----------------------------------------------------------------
   # UNIX: Helper MACROS
   #-----------------------------------------------------------------
   #
   # Set the default values based on "wx-config --selected-config".
   #
   macro(WX_CONFIG_SELECT_GET_DEFAULT)
     execute_process(
       COMMAND sh "${wxWidgets_CONFIG_EXECUTABLE}"
         ${wxWidgets_CONFIG_OPTIONS} --selected-config
       OUTPUT_VARIABLE _wx_selected_config
       RESULT_VARIABLE _wx_result
       ERROR_QUIET
       )
     if(_wx_result EQUAL 0)
       foreach(_opt_name debug static unicode universal)
         string(TOUPPER ${_opt_name} _upper_opt_name)
         if(_wx_selected_config MATCHES ".*${_opt_name}.*")
           set(wxWidgets_DEFAULT_${_upper_opt_name} ON)
         else()
           set(wxWidgets_DEFAULT_${_upper_opt_name} OFF)
         endif()
       endforeach()
     else()
       foreach(_upper_opt_name DEBUG STATIC UNICODE UNIVERSAL)
         set(wxWidgets_DEFAULT_${_upper_opt_name} OFF)
       endforeach()
     endif()
   endmacro()

   #
   # Query a boolean configuration option to determine if the system
   # has both builds available. If so, provide the selection option
   # to the user.
   #
   macro(WX_CONFIG_SELECT_QUERY_BOOL _OPT_NAME _OPT_HELP)
     execute_process(
       COMMAND sh "${wxWidgets_CONFIG_EXECUTABLE}"
         ${wxWidgets_CONFIG_OPTIONS} --${_OPT_NAME}=yes
       RESULT_VARIABLE _wx_result_yes
       OUTPUT_QUIET
       ERROR_QUIET
       )
     execute_process(
       COMMAND sh "${wxWidgets_CONFIG_EXECUTABLE}"
         ${wxWidgets_CONFIG_OPTIONS} --${_OPT_NAME}=no
       RESULT_VARIABLE _wx_result_no
       OUTPUT_QUIET
       ERROR_QUIET
       )
     string(TOUPPER ${_OPT_NAME} _UPPER_OPT_NAME)
     if(_wx_result_yes EQUAL 0 AND _wx_result_no EQUAL 0)
       option(wxWidgets_USE_${_UPPER_OPT_NAME}
         ${_OPT_HELP} ${wxWidgets_DEFAULT_${_UPPER_OPT_NAME}})
     else()
       # If option exists (already in cache), force to available one.
       if(DEFINED wxWidgets_USE_${_UPPER_OPT_NAME})
         if(_wx_result_yes EQUAL 0)
           set(wxWidgets_USE_${_UPPER_OPT_NAME} ON  CACHE BOOL ${_OPT_HELP} FORCE)
         else()
           set(wxWidgets_USE_${_UPPER_OPT_NAME} OFF CACHE BOOL ${_OPT_HELP} FORCE)
         endif()
       endif()
     endif()
   endmacro()

   #
   # Set wxWidgets_SELECT_OPTIONS to wx-config options for selecting
   # among multiple builds.
   #
   macro(WX_CONFIG_SELECT_SET_OPTIONS)
     set(wxWidgets_SELECT_OPTIONS ${wxWidgets_CONFIG_OPTIONS})
     foreach(_opt_name debug static unicode universal)
       string(TOUPPER ${_opt_name} _upper_opt_name)
       if(DEFINED wxWidgets_USE_${_upper_opt_name})
         if(wxWidgets_USE_${_upper_opt_name})
           list(APPEND wxWidgets_SELECT_OPTIONS --${_opt_name}=yes)
         else()
           list(APPEND wxWidgets_SELECT_OPTIONS --${_opt_name}=no)
         endif()
       endif()
     endforeach()
   endmacro()

   #-----------------------------------------------------------------
   # UNIX: Start actual work.
   #-----------------------------------------------------------------
   # Support cross-compiling, only search in the target platform.
   find_program(wxWidgets_CONFIG_EXECUTABLE wx-config
     DOC "Location of wxWidgets library configuration provider binary (wx-config)."
     ONLY_CMAKE_FIND_ROOT_PATH
     )

   if(wxWidgets_CONFIG_EXECUTABLE)
     set(wxWidgets_FOUND TRUE)

     # get defaults based on "wx-config --selected-config"
     WX_CONFIG_SELECT_GET_DEFAULT()

     # for each option: if both builds are available, provide option
     WX_CONFIG_SELECT_QUERY_BOOL(debug "Use debug build?")
     WX_CONFIG_SELECT_QUERY_BOOL(unicode "Use unicode build?")
     WX_CONFIG_SELECT_QUERY_BOOL(universal "Use universal build?")
     WX_CONFIG_SELECT_QUERY_BOOL(static "Link libraries statically?")

     # process selection to set wxWidgets_SELECT_OPTIONS
     WX_CONFIG_SELECT_SET_OPTIONS()
     DBG_MSG("wxWidgets_SELECT_OPTIONS=${wxWidgets_SELECT_OPTIONS}")

     # run the wx-config program to get cxxflags
     execute_process(
       COMMAND sh "${wxWidgets_CONFIG_EXECUTABLE}"
         ${wxWidgets_SELECT_OPTIONS} --cxxflags
       OUTPUT_VARIABLE wxWidgets_CXX_FLAGS
       RESULT_VARIABLE RET
       ERROR_QUIET
       )
     if(RET EQUAL 0)
       string(STRIP "${wxWidgets_CXX_FLAGS}" wxWidgets_CXX_FLAGS)
       separate_arguments(wxWidgets_CXX_FLAGS)

       DBG_MSG_V("wxWidgets_CXX_FLAGS=${wxWidgets_CXX_FLAGS}")

       # parse definitions from cxxflags;
       #   drop -D* from CXXFLAGS and the -D prefix
       string(REGEX MATCHALL "-D[^;]+"
         wxWidgets_DEFINITIONS  "${wxWidgets_CXX_FLAGS}")
       string(REGEX REPLACE "-D[^;]+(;|$)" ""
         wxWidgets_CXX_FLAGS "${wxWidgets_CXX_FLAGS}")
       string(REGEX REPLACE ";$" ""
         wxWidgets_CXX_FLAGS "${wxWidgets_CXX_FLAGS}")
       string(REPLACE "-D" ""
         wxWidgets_DEFINITIONS "${wxWidgets_DEFINITIONS}")

       # parse include dirs from cxxflags; drop -I prefix
       string(REGEX MATCHALL "-I[^;]+"
         wxWidgets_INCLUDE_DIRS "${wxWidgets_CXX_FLAGS}")
       string(REGEX REPLACE "-I[^;]+;" ""
         wxWidgets_CXX_FLAGS "${wxWidgets_CXX_FLAGS}")
       string(REPLACE "-I" ""
         wxWidgets_INCLUDE_DIRS "${wxWidgets_INCLUDE_DIRS}")

       DBG_MSG_V("wxWidgets_DEFINITIONS=${wxWidgets_DEFINITIONS}")
       DBG_MSG_V("wxWidgets_INCLUDE_DIRS=${wxWidgets_INCLUDE_DIRS}")
       DBG_MSG_V("wxWidgets_CXX_FLAGS=${wxWidgets_CXX_FLAGS}")

     else()
       set(wxWidgets_FOUND FALSE)
       DBG_MSG_V(
         "${wxWidgets_CONFIG_EXECUTABLE} --cxxflags FAILED with RET=${RET}")
     endif()

     # run the wx-config program to get the libs
     # - NOTE: wx-config doesn't verify that the libs requested exist
     #         it just produces the names. Maybe a TRY_COMPILE would
     #         be useful here...
     string(REPLACE ";" ","
       wxWidgets_FIND_COMPONENTS "${wxWidgets_FIND_COMPONENTS}")
     execute_process(
       COMMAND sh "${wxWidgets_CONFIG_EXECUTABLE}"
         ${wxWidgets_SELECT_OPTIONS} --libs ${wxWidgets_FIND_COMPONENTS}
       OUTPUT_VARIABLE wxWidgets_LIBRARIES
       RESULT_VARIABLE RET
       ERROR_QUIET
       )
     if(RET EQUAL 0)
       string(STRIP "${wxWidgets_LIBRARIES}" wxWidgets_LIBRARIES)
       separate_arguments(wxWidgets_LIBRARIES)
       string(REPLACE "-framework;" "-framework "
         wxWidgets_LIBRARIES "${wxWidgets_LIBRARIES}")
       string(REPLACE "-arch;" "-arch "
         wxWidgets_LIBRARIES "${wxWidgets_LIBRARIES}")
       string(REPLACE "-isysroot;" "-isysroot "
         wxWidgets_LIBRARIES "${wxWidgets_LIBRARIES}")

       # extract linkdirs (-L) for rpath (i.e., LINK_DIRECTORIES)
       string(REGEX MATCHALL "-L[^;]+"
         wxWidgets_LIBRARY_DIRS "${wxWidgets_LIBRARIES}")
       string(REPLACE "-L" ""
         wxWidgets_LIBRARY_DIRS "${wxWidgets_LIBRARY_DIRS}")

       DBG_MSG_V("wxWidgets_LIBRARIES=${wxWidgets_LIBRARIES}")
       DBG_MSG_V("wxWidgets_LIBRARY_DIRS=${wxWidgets_LIBRARY_DIRS}")

     else()
       set(wxWidgets_FOUND FALSE)
       DBG_MSG("${wxWidgets_CONFIG_EXECUTABLE} --libs ${wxWidgets_FIND_COMPONENTS} FAILED with RET=${RET}")
     endif()
   endif()
  1. =====================================================================
  2. Neither UNIX_FIND_STYLE, nor WIN32_FIND_STYLE
  3. =====================================================================
 else()
   if(NOT wxWidgets_FIND_QUIETLY)
     message(STATUS
       "${CMAKE_CURRENT_LIST_FILE}(${CMAKE_CURRENT_LIST_LINE}): \n"
       "  Platform unknown/unsupported. It's neither WIN32 nor UNIX "
       "find style."
       )
   endif()
 endif()

endif()

  1. Debug output:

DBG_MSG("wxWidgets_FOUND : ${wxWidgets_FOUND}") DBG_MSG("wxWidgets_INCLUDE_DIRS : ${wxWidgets_INCLUDE_DIRS}") DBG_MSG("wxWidgets_LIBRARY_DIRS : ${wxWidgets_LIBRARY_DIRS}") DBG_MSG("wxWidgets_LIBRARIES : ${wxWidgets_LIBRARIES}") DBG_MSG("wxWidgets_CXX_FLAGS : ${wxWidgets_CXX_FLAGS}") DBG_MSG("wxWidgets_USE_FILE : ${wxWidgets_USE_FILE}")

  1. =====================================================================
  2. =====================================================================

include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake) FIND_PACKAGE_HANDLE_STANDARD_ARGS(wxWidgets DEFAULT_MSG wxWidgets_FOUND)

  1. Maintain consistency with all other variables.

set(wxWidgets_FOUND ${WXWIDGETS_FOUND})

  1. =====================================================================
  2. Macros for use in wxWidgets apps.
  3. - This module will not fail to find wxWidgets based on the code
  4. below. Hence, it's required to check for validity of:
  6. wxWidgets_wxrc_EXECUTABLE
  7. =====================================================================
  1. Resource file compiler.

find_program(wxWidgets_wxrc_EXECUTABLE wxrc 

 ${wxWidgets_ROOT_DIR}/utils/wxrc/vc_msw
 DOC "Location of wxWidgets resource file compiler binary (wxrc)"
 )
  2. WX_SPLIT_ARGUMENTS_ON(<keyword> <left> <right> <arg1> <arg2> ...)
  4. Sets <left> and <right> to contain arguments to the left and right,
  5. respectively, of <keyword>.
  7. Example usage:
  8. function(WXWIDGETS_ADD_RESOURCES outfiles)
  9. WX_SPLIT_ARGUMENTS_ON(OPTIONS wxrc_files wxrc_options ${ARGN})
  10. ...
  11. endfunction()
  13. WXWIDGETS_ADD_RESOURCES(sources ${xrc_files} OPTIONS -e -o file.C)
  15. NOTE: This is a generic piece of code that should be renamed to
  16. SPLIT_ARGUMENTS_ON and put in a file serving the same purpose as
  17. FindPackageStandardArgs.cmake. At the time of this writing
  18. FindQt4.cmake has a QT4_EXTRACT_OPTIONS, which I basically copied
  19. here a bit more generalized. So, there are already two find modules
  20. using this approach.

function(WX_SPLIT_ARGUMENTS_ON _keyword _leftvar _rightvar) 

 # FIXME: Document that the input variables will be cleared.
 #list(APPEND ${_leftvar}  "")
 #list(APPEND ${_rightvar} "")
 set(${_leftvar}  "")
 set(${_rightvar} "")

 set(_doing_right FALSE)
 foreach(element ${ARGN})
   if("${element}" STREQUAL "${_keyword}")
     set(_doing_right TRUE)
   else()
     if(_doing_right)
       list(APPEND ${_rightvar} "${element}")
     else()
       list(APPEND ${_leftvar} "${element}")
     endif()
   endif()
 endforeach()

 set(${_leftvar}  ${${_leftvar}}  PARENT_SCOPE)
 set(${_rightvar} ${${_rightvar}} PARENT_SCOPE)

endfunction()

  2. WX_GET_DEPENDENCIES_FROM_XML(
  3. <depends>
  4. <match_pattern>
  5. <clean_pattern>
  6. <xml_contents>
  7. <depends_path>
  8. )
  10. FIXME: Add documentation here...

function(WX_GET_DEPENDENCIES_FROM_XML 

   _depends
   _match_patt
   _clean_patt
   _xml_contents
   _depends_path
   )

 string(REGEX MATCHALL
   ${_match_patt}
   dep_file_list
   "${${_xml_contents}}"
   )
 foreach(dep_file ${dep_file_list})
   string(REGEX REPLACE ${_clean_patt} "" dep_file "${dep_file}")

   # make the file have an absolute path
   if(NOT IS_ABSOLUTE "${dep_file}")
     set(dep_file "${${_depends_path}}/${dep_file}")
   endif()

   # append file to dependency list
   list(APPEND ${_depends} "${dep_file}")
 endforeach()

 set(${_depends} ${${_depends}} PARENT_SCOPE)

endfunction()

  2. WXWIDGETS_ADD_RESOURCES(<sources> <xrc_files>
  3. OPTIONS <options> [NO_CPP_CODE])
  5. Adds a custom command for resource file compilation of the
  6. <xrc_files> and appends the output files to <sources>.
  8. Example usages:
  9. WXWIDGETS_ADD_RESOURCES(sources xrc/main_frame.xrc)
  10. WXWIDGETS_ADD_RESOURCES(sources ${xrc_files} OPTIONS -e -o altname.cxx)

function(WXWIDGETS_ADD_RESOURCES _outfiles) 

 WX_SPLIT_ARGUMENTS_ON(OPTIONS rc_file_list rc_options ${ARGN})

 # Parse files for dependencies.
 set(rc_file_list_abs "")
 set(rc_depends       "")
 foreach(rc_file ${rc_file_list})
   get_filename_component(depends_path ${rc_file} PATH)

   get_filename_component(rc_file_abs ${rc_file} ABSOLUTE)
   list(APPEND rc_file_list_abs "${rc_file_abs}")

   # All files have absolute paths or paths relative to the location
   # of the rc file.
   file(READ "${rc_file_abs}" rc_file_contents)

   # get bitmap/bitmap2 files
   WX_GET_DEPENDENCIES_FROM_XML(
     rc_depends
     "<bitmap[^<]+"
     "^<bitmap[^>]*>"
     rc_file_contents
     depends_path
     )

   # get url files
   WX_GET_DEPENDENCIES_FROM_XML(
     rc_depends
     "<url[^<]+"
     "^<url[^>]*>"
     rc_file_contents
     depends_path
     )

   # get wxIcon files
   WX_GET_DEPENDENCIES_FROM_XML(
     rc_depends
     "<object[^>]*class=\"wxIcon\"[^<]+"
     "^<object[^>]*>"
     rc_file_contents
     depends_path
     )
 endforeach()

 #
 # Parse options.
 #
 # If NO_CPP_CODE option specified, then produce .xrs file rather
 # than a .cpp file (i.e., don't add the default --cpp-code option).
 list(FIND rc_options NO_CPP_CODE index)
 if(index EQUAL -1)
   list(APPEND rc_options --cpp-code)
   # wxrc's default output filename for cpp code.
   set(outfile resource.cpp)
 else()
   list(REMOVE_AT rc_options ${index})
   # wxrc's default output filename for xrs file.
   set(outfile resource.xrs)
 endif()

 # Get output name for use in ADD_CUSTOM_COMMAND.
 # - short option scanning
 list(FIND rc_options -o index)
 if(NOT index EQUAL -1)
   math(EXPR filename_index "${index} + 1")
   list(GET rc_options ${filename_index} outfile)
   #list(REMOVE_AT rc_options ${index} ${filename_index})
 endif()
 # - long option scanning
 string(REGEX MATCH "--output=[^;]*" outfile_opt "${rc_options}")
 if(outfile_opt)
   string(REPLACE "--output=" "" outfile "${outfile_opt}")
 endif()
 #string(REGEX REPLACE "--output=[^;]*;?" "" rc_options "${rc_options}")
 #string(REGEX REPLACE ";$" "" rc_options "${rc_options}")

 if(NOT IS_ABSOLUTE "${outfile}")
   set(outfile "${CMAKE_CURRENT_BINARY_DIR}/${outfile}")
 endif()
 add_custom_command(
   OUTPUT "${outfile}"
   COMMAND ${wxWidgets_wxrc_EXECUTABLE} ${rc_options} ${rc_file_list_abs}
   DEPENDS ${rc_file_list_abs} ${rc_depends}
   )

 # Add generated header to output file list.
 list(FIND rc_options -e short_index)
 list(FIND rc_options --extra-cpp-code long_index)
 if(NOT short_index EQUAL -1 OR NOT long_index EQUAL -1)
   get_filename_component(outfile_ext ${outfile} EXT)
   string(REPLACE "${outfile_ext}" ".h" outfile_header "${outfile}")
   list(APPEND ${_outfiles} "${outfile_header}")
   set_source_files_properties(
     "${outfile_header}" PROPERTIES GENERATED TRUE
     )
 endif()

 # Add generated file to output file list.
 list(APPEND ${_outfiles} "${outfile}")

 set(${_outfiles} ${${_outfiles}} PARENT_SCOPE)

endfunction() </source>

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