ENH: fix for mingw

Modules/FindwxWindows.cmake

@@ -1,405 +1,414 @@
-##
-## This module finds if wxWindows is installed and determines where the
-## include files and libraries are. It also determines what the name of
-## the library is. This code sets the following variables:
-##
-## ------------------------------------------------------------------
-##
-## WXWINDOWS_FOUND            = system has WxWindows (in desired config. build)
-##
-## WXWINDOWS_LIBRARIES        = full path to the wxWindows libraries
-##                              on Unix/Linux with additional linker flags from
-##                              "wx-config --libs"
-## 
-## CMAKE_WXWINDOWS_CXX_FLAGS  = Unix compiler flags for wxWindows, essentially
-##                              "`wx-config --cxxflags`"
-##
-## WXWINDOWS_INCLUDE_DIR      = where to find headers "wx/wx.h" "wx/setup.h"
-##
-## WXWINDOWS_LINK_DIRECTORIES = link directories, useful for rpath on Unix
-##
-## WXWINDOWS_DEFINITIONS      = extra defines
-##
-## deprecated: 
-##   * CMAKE_WX_CAN_COMPILE
-##   * WXWINDOWS_LIBRARY
-##   * CMAKE_WX_CXX_FLAGS
-##   * WXWINDOWS_INCLUDE_PATH
-##
-## ------------------------------------------------------------------
-##
-## USAGE: 
-##   # for convenience include Use_wxWindows.cmake in your projects
-##     CMakeLists.txt: 
-##   
-##   # if you need OpenGL support please
-## SET(WXWINDOWS_USE_GL 1) 
-##   # in your CMakeLists.txt *before* you include this file.
-##
-##   # just include Use_wxWindows.cmake 
-##   # in your projects CMakeLists.txt
-## INCLUDE( ${CMAKE_ROOT}/Modules/Use_wxWindows.cmake)
-## 
-## ------------------------------------------------------------------
-## Author Jan Woetzel <http://www.mip.informatik.uni-kiel.de/~jw> (07/2003)
-## ------------------------------------------------------------------
-## 
-## -changed variable names to conventions from cmakes readme.txt (Jan Woetzel
-##  07/07/2003)
-## -added definition WINVER for WIN32 (Jan Woetzel 07/07//2003)
-## -added IF(CMAKE_WXWINDOWS_CONFIG_EXECUTABLE) found and changed
-##  CMAKE_WX_CONFIG to CMAKE_WXWINDOWS_CONFIG_EXECUTABLE (Jan Woetzel
-##  07/22/2003)
-## -removed OPTION for CMAKE_WXWINDOWS_USE_GL. Force the developer to SET it.
-## 
-## status: 
-## tested with:
-##   -cmake 1.6.7, Linux (Suse 7.3), wxWindows 2.4.0, gcc 2.95
-##   -cmake 1.6.7, Linux (Suse 8.2), wxWindows 2.4.0, gcc 3.3
-##   -cmake 1.6.7, Linux (Suse 8.2), wxWindows 2.4.1-patch1,  gcc 3.3
-##   -cmake 1.6.7, MS Windows XP home, wxWindows 2.4.1, MS Visual Studio .net 7
-##    2002 (static build)
-## 
-## TODO: 
-##  -OPTION for unicode builds 
-##  -change WXWINDOWS_USE_GL to use FindOpenGL.cmake or let the user do it
-##  -testing of DLL linking under MS WIN32
-## 
-
-
-
-IF(WIN32)
-  
-  ## ######################################################################
-  ##
-  ## Windows specific:
-  ##
-  ## candidates for root/base directory of wxwindows
-  ## should have subdirs include and lib containing include/wx/wx.h
-  ## fix the root dir to avoid mixing of headers/libs from different
-  ## versions/builds:
-  
-  SET (WXWINDOWS_POSSIBLE_ROOT_PATHS
-    $ENV{WXWIN}
-    "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\wxWindows_is1;Inno Setup: App Path]" )
-    
-  FIND_PATH(WXWINDOWS_ROOT_DIR  include/wx/wx.h 
-    ${WXWINDOWS_POSSIBLE_ROOT_PATHS} )
-  
-  ## MESSAGE("DBG found WXWINDOWS_ROOT_DIR: ${WXWINDOWS_ROOT_DIR}")
-  
-  ## find libs for combination of static/shared with release/debug
-  SET (WXWINDOWS_POSSIBLE_LIB_PATHS
-    "${WXWINDOWS_ROOT_DIR}/lib" )
-  
-  FIND_LIBRARY(WXWINDOWS_STATIC_LIBRARY
-    NAMES wx wxmsw
-    PATHS ${WXWINDOWS_POSSIBLE_LIB_PATHS}
-    DOC "wxWindows static release build library" )
-  
-  FIND_LIBRARY(WXWINDOWS_STATIC_DEBUG_LIBRARY
-    NAMES wxd wxmswd
-    PATHS ${WXWINDOWS_POSSIBLE_LIB_PATHS} 
-    DOC "wxWindows static debug build library" )
-  
-  FIND_LIBRARY(WXWINDOWS_SHARED_LIBRARY
-    NAMES wxmsw24 wxmsw241 wxmsw240 wx23_2 wx22_9 
-    PATHS ${WXWINDOWS_POSSIBLE_LIB_PATHS} 
-    DOC "wxWindows shared release build library" )
-  
-  FIND_LIBRARY(WXWINDOWS_SHARED_DEBUG_LIBRARY
-    NAMES wxmsw24d wxmsw241d wxmsw240d wx23_2d wx22_9d 
-    PATHS ${WXWINDOWS_POSSIBLE_LIB_PATHS} 
-    DOC "wxWindows shared debug build library " )
-    
-  
-  ## if there is at least one shared lib available
-  ## let user choose wether to use shared or static wxwindows libs 
-  IF(WXWINDOWS_SHARED_LIBRARY OR WXWINDOWS_SHARED_DEBUG_LIBRARY)
-    ## default value OFF because wxWindows MSVS default build is static
-    OPTION(WXWINDOWS_USE_SHARED_LIBS
-      "Use shared versions (dll) of wxWindows libraries?" OFF)
-    MARK_AS_ADVANCED(WXWINDOWS_USE_SHARED_LIBS)
-  ENDIF(WXWINDOWS_SHARED_LIBRARY OR WXWINDOWS_SHARED_DEBUG_LIBRARY)
-  
-  
-  ## add system libraries wxwindows depends on
-  SET(CMAKE_WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
-    comctl32
-    rpcrt4
-    wsock32
-##  presumably ctl3d32 is not neccesary (Jan Woetzel 07/2003)
-#   ctl3d32
-#    debug ${WXWINDOWS_ROOT_DIR}/lib/zlibd.lib  optimized ${WXWINDOWS_ROOT_DIR}/lib/zlibd.lib
-#    debug ${WXWINDOWS_ROOT_DIR}/lib/regexd.lib optimized ${WXWINDOWS_ROOT_DIR}/lib/regexd.lib 
-#    debug ${WXWINDOWS_ROOT_DIR}/lib/pngd.lib   optimized ${WXWINDOWS_ROOT_DIR}/lib/pngd.lib
-#    debug ${WXWINDOWS_ROOT_DIR}/lib/jpegd.lib  optimized ${WXWINDOWS_ROOT_DIR}/lib/jpegd.lib
-#    debug ${WXWINDOWS_ROOT_DIR}/lib/tiffd.lib  optimized ${WXWINDOWS_ROOT_DIR}/lib/tiff.lib
-  )
-  
-  # JW removed option and force the develper th SET it. 
-  # OPTION(WXWINDOWS_USE_GL "use wxWindows with GL support (use additional
-  # opengl, glu libs)?" OFF)
-  
-  ## opengl/glu: (TODO/FIXME: better use FindOpenGL.cmake here 
-  IF (WXWINDOWS_USE_GL)
-    SET(CMAKE_WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
-      opengl32
-      glu32
-    )
-  ENDIF (WXWINDOWS_USE_GL)
-  
-  
-  ##
-  ## select between use of  shared or static wxWindows lib then set libs to use
-  ## for debug and optimized build.  so the user can switch between debug and
-  ## release build e.g. within MS Visual Studio without running cmake with a
-  ## different build directory again.
-  ## 
-  ## then add the build specific include dir for wx/setup.h
-  ## 
-  
-  IF(WXWINDOWS_USE_SHARED_LIBS)
-    ##MESSAGE("DBG wxWindows use shared lib selected.")
-    
-    ## shared: both wx (debug and release) found?
-    IF(WXWINDOWS_SHARED_DEBUG_LIBRARY AND WXWINDOWS_SHARED_LIBRARY)
-      ##MESSAGE("DBG wx shared: debug and optimized found.")
-      SET(WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
-        debug     ${WXWINDOWS_SHARED_DEBUG_LIBRARY}
-        optimized ${WXWINDOWS_SHARED_LIBRARY} )
-      FIND_PATH(WXWINDOWS_INCLUDE_DIR_SETUPH  wx/setup.h
-        ${WXWINDOWS_ROOT_DIR}/lib/mswdlld
-        ${WXWINDOWS_ROOT_DIR}/lib/mswdll )
-    ENDIF(WXWINDOWS_SHARED_DEBUG_LIBRARY AND WXWINDOWS_SHARED_LIBRARY)
-    
-    ## shared: only debug wx lib found?
-    IF(WXWINDOWS_SHARED_DEBUG_LIBRARY)
-      IF(NOT WXWINDOWS_SHARED_LIBRARY)
-        ##MESSAGE("DBG wx shared: debug (but no optimized) found.")
-        SET(WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
-          ${WXWINDOWS_SHARED_DEBUG_LIBRARY} )
-        FIND_PATH(WXWINDOWS_INCLUDE_DIR_SETUPH  wx/setup.h
-          ${WXWINDOWS_ROOT_DIR}/lib/mswdlld )
-      ENDIF(NOT WXWINDOWS_SHARED_LIBRARY)
-    ENDIF(WXWINDOWS_SHARED_DEBUG_LIBRARY)
-    
-    ## shared: only release wx lib found?
-    IF(NOT WXWINDOWS_SHARED_DEBUG_LIBRARY)
-      IF(WXWINDOWS_SHARED_LIBRARY)
-        ##MESSAGE("DBG wx shared: optimized (but no debug) found.")
-        SET(WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
-          ${WXWINDOWS_SHARED_DEBUG_LIBRARY} )
-        FIND_PATH(WXWINDOWS_INCLUDE_DIR_SETUPH  wx/setup.h
-          ${WXWINDOWS_ROOT_DIR}/lib/mswdll )
-      ENDIF(WXWINDOWS_SHARED_LIBRARY)    
-    ENDIF(NOT WXWINDOWS_SHARED_DEBUG_LIBRARY)
-    
-    ## shared: none found?
-    IF(NOT WXWINDOWS_SHARED_DEBUG_LIBRARY)
-      IF(NOT WXWINDOWS_SHARED_LIBRARY)
-        MESSAGE(SEND_ERROR 
-          "No shared wxWindows lib found, but WXWINDOWS_USE_SHARED_LIBS=${WXWINDOWS_USE_SHARED_LIBS}.")
-      ENDIF(NOT WXWINDOWS_SHARED_LIBRARY)
-    ENDIF(NOT WXWINDOWS_SHARED_DEBUG_LIBRARY)
-
-
-  ELSE(WXWINDOWS_USE_SHARED_LIBS)
-    ##MESSAGE("DBG wxWindows static lib selected.")
-
-    ## static: both wx (debug and release) found?
-    IF(WXWINDOWS_STATIC_DEBUG_LIBRARY AND WXWINDOWS_STATIC_LIBRARY)
-      ##MESSAGE("DBG wx static: debug and optimized found.")
-      SET(WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
-        debug     ${WXWINDOWS_STATIC_DEBUG_LIBRARY}
-        optimized ${WXWINDOWS_STATIC_LIBRARY} )
-      FIND_PATH(WXWINDOWS_INCLUDE_DIR_SETUPH  wx/setup.h
-        ${WXWINDOWS_ROOT_DIR}/lib/mswd
-        ${WXWINDOWS_ROOT_DIR}/lib/msw )
-    ENDIF(WXWINDOWS_STATIC_DEBUG_LIBRARY AND WXWINDOWS_STATIC_LIBRARY)
-    
-    ## static: only debug wx lib found?
-    IF(WXWINDOWS_STATIC_DEBUG_LIBRARY)
-      IF(NOT WXWINDOWS_STATIC_LIBRARY)
-        ##MESSAGE("DBG wx static: debug (but no optimized) found.")
-        SET(WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
-          ${WXWINDOWS_STATIC_DEBUG_LIBRARY} )
-        FIND_PATH(WXWINDOWS_INCLUDE_DIR_SETUPH  wx/setup.h
-          ${WXWINDOWS_ROOT_DIR}/lib/mswd )
-      ENDIF(NOT WXWINDOWS_STATIC_LIBRARY)
-    ENDIF(WXWINDOWS_STATIC_DEBUG_LIBRARY)
-    
-    ## static: only release wx lib found?
-    IF(NOT WXWINDOWS_STATIC_DEBUG_LIBRARY)
-      IF(WXWINDOWS_STATIC_LIBRARY)
-        ##MESSAGE("DBG wx static: optimized (but no debug) found.")
-        SET(WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
-          ${WXWINDOWS_STATIC_DEBUG_LIBRARY} )
-        FIND_PATH(WXWINDOWS_INCLUDE_DIR_SETUPH  wx/setup.h
-          ${WXWINDOWS_ROOT_DIR}/lib/msw )
-      ENDIF(WXWINDOWS_STATIC_LIBRARY)
-    ENDIF(NOT WXWINDOWS_STATIC_DEBUG_LIBRARY)
-    
-    ## static: none found?
-    IF(NOT WXWINDOWS_STATIC_DEBUG_LIBRARY)
-      IF(NOT WXWINDOWS_STATIC_LIBRARY)
-        MESSAGE(SEND_ERROR 
-          "No static wxWindows lib found, but WXWINDOWS_USE_SHARED_LIBS=${WXWINDOWS_USE_SHARED_LIBS}.")
-      ENDIF(NOT WXWINDOWS_STATIC_LIBRARY)
-    ENDIF(NOT WXWINDOWS_STATIC_DEBUG_LIBRARY)
-    
-  ENDIF(WXWINDOWS_USE_SHARED_LIBS)  
-  
-  
-  ## not neccessary in wxWindows 2.4.1 
-  ## but it may fix a previous bug, see
-  ## http://lists.wxwindows.org/cgi-bin/ezmlm-cgi?8:mss:37574:200305:mpdioeneabobmgjenoap
-  OPTION(WXWINDOWS_SET_DEFINITIONS "Set additional defines for wxWindows" OFF)
-  MARK_AS_ADVANCED(WXWINDOWS_SET_DEFINITIONS)
-  IF (WXWINDOWS_SET_DEFINITIONS) 
-    SET(WXWINDOWS_DEFINITIONS "-DWINVER=0x400")
-  ELSE (WXWINDOWS_SET_DEFINITIONS) 
-    # clear:
-    SET(WXWINDOWS_DEFINITIONS "")
-  ENDIF (WXWINDOWS_SET_DEFINITIONS) 
-  
-  
-  ## Find the include directories for wxwindows
-  ## the first, build specific for wx/setup.h was determined before.
-  ## add inc dir for general for "wx/wx.h" 
-  SET (WXWINDOWS_POSSIBLE_INCLUDE_PATHS
-    "${WXWINDOWS_ROOT_DIR}/include"
-  )
-  FIND_PATH(WXWINDOWS_INCLUDE_DIR  wx/wx.h 
-    ${WXWINDOWS_POSSIBLE_INCLUDE_PATHS}
-  )  
-  # append the build specific include dir for wx/setup.h:
-  IF (WXWINDOWS_INCLUDE_DIR_SETUPH)
-    SET(WXWINDOWS_INCLUDE_DIR ${WXWINDOWS_INCLUDE_DIR} ${WXWINDOWS_INCLUDE_DIR_SETUPH} )
-  ENDIF (WXWINDOWS_INCLUDE_DIR_SETUPH)
-  
-  MARK_AS_ADVANCED(
-    WXWINDOWS_ROOT_DIR
-    WXWINDOWS_INCLUDE_DIR
-    WXWINDOWS_INCLUDE_DIR_SETUPH
-    WXWINDOWS_STATIC_LIBRARY
-    WXWINDOWS_STATIC_DEBUG_LIBRARY
-    WXWINDOWS_SHARED_LIBRARY
-    WXWINDOWS_SHARED_DEBUG_LIBRARY
-  )
-  
-  
-ELSE(WIN32)
-IF (UNIX) 
-
-  ## ######################################################################
-  ## 
-  ## UNIX/Linux specific:
-  ## 
-  ## use backquoted wx-config to query and set flags and libs:
-  ## 06/2003 Jan Woetzel
-  ## 
-  
-  OPTION(WXWINDOWS_USE_SHARED_LIBS "Use shared versions (.so) of wxWindows libraries" ON)
-  MARK_AS_ADVANCED(WXWINDOWS_USE_SHARED_LIBS)
-
-  # JW removed option and force the develper th SET it. 
-  # OPTION(WXWINDOWS_USE_GL "use wxWindows with GL support (use additional
-  # --gl-libs for wx-config)?" OFF)
-  
-  # wx-config should be in your path anyhow, usually no need to set WXWIN or
-  # search in ../wx or ../../wx
-  FIND_PROGRAM(CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE wx-config
-    $ENV{WXWIN}
-    ../wx/bin
-    ../../wx/bin )
-  
-  # check wether wx-config was found:
-  IF(CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE)    
-
-    # use shared/static wx lib?
-    # remember: always link shared to use systems GL etc. libs (no static
-    # linking, just link *against* static .a libs)
-    IF(WXWINDOWS_USE_SHARED_LIBS)
-      SET(WX_CONFIG_ARGS_LIBS "--libs")
-    ELSE(WXWINDOWS_USE_SHARED_LIBS)
-      SET(WX_CONFIG_ARGS_LIBS "--static --libs")
-    ENDIF(WXWINDOWS_USE_SHARED_LIBS)
-  
-    # do we need additionial wx GL stuff like GLCanvas ?
-    IF(WXWINDOWS_USE_GL)
-      SET(WX_CONFIG_ARGS_LIBS "${WX_CONFIG_ARGS_LIBS} --gl-libs" )
-    ENDIF(WXWINDOWS_USE_GL)
-    ##MESSAGE("DBG: WX_CONFIG_ARGS_LIBS=${WX_CONFIG_ARGS_LIBS}===")
-    
-    # set CXXFLAGS to be fed into CMAKE_CXX_FLAGS by the user:
-    SET(CMAKE_WXWINDOWS_CXX_FLAGS "`${CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE} --cxxflags`")
-    ##MESSAGE("DBG: for compilation:
-    ##CMAKE_WXWINDOWS_CXX_FLAGS=${CMAKE_WXWINDOWS_CXX_FLAGS}===")
-
-    # keep the back-quoted string for clarity
-    SET(WXWINDOWS_LIBRARIES "`${CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE} ${WX_CONFIG_ARGS_LIBS}`")
-    ##MESSAGE("DBG2: for linking:
-    ##WXWINDOWS_LIBRARIES=${WXWINDOWS_LIBRARIES}===")
-    
-    # evaluate wx-config output to separate linker flags and linkdirs for
-    # rpath:
-    EXEC_PROGRAM(${CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE}
-      ARGS ${WX_CONFIG_ARGS_LIBS}
-      OUTPUT_VARIABLE WX_CONFIG_LIBS )
-  
-    ## extract linkdirs (-L) for rpath
-    ## use regular expression to match wildcard equivalent "-L*<endchar>"
-    ## with <endchar> is a space or a semicolon
-    STRING(REGEX MATCHALL "[-][L]([^ ;])+" WXWINDOWS_LINK_DIRECTORIES_WITH_PREFIX "${WX_CONFIG_LIBS}" )
-    #MESSAGE("DBG  WXWINDOWS_LINK_DIRECTORIES_WITH_PREFIX=${WXWINDOWS_LINK_DIRECTORIES_WITH_PREFIX}")
-    
-    ## remove prefix -L because we need the pure directory for LINK_DIRECTORIES
-    ## replace -L by ; because the separator seems to be lost otherwise (bug or
-    ## feature?)
-    IF(WXWINDOWS_LINK_DIRECTORIES_WITH_PREFIX)
-      STRING(REGEX REPLACE "[-][L]" ";" WXWINDOWS_LINK_DIRECTORIES ${WXWINDOWS_LINK_DIRECTORIES_WITH_PREFIX} )
-      #MESSAGE("DBG  WXWINDOWS_LINK_DIRECTORIES=${WXWINDOWS_LINK_DIRECTORIES}")
-    ENDIF(WXWINDOWS_LINK_DIRECTORIES_WITH_PREFIX)
-
-    
-    ## replace space separated string by semicolon separated vector to make it
-    ## work with LINK_DIRECTORIES
-    SEPARATE_ARGUMENTS(WXWINDOWS_LINK_DIRECTORIES)
-    
-    MARK_AS_ADVANCED(
-      CMAKE_WXWINDOWS_CXX_FLAGS
-      WXWINDOWS_INCLUDE_DIR
-      WXWINDOWS_LIBRARIES
-      CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE
-    )
-  
-  
-  # we really need wx-config...
-  ELSE(CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE)    
-    MESSAGE(SEND_ERROR "Cannot find wx-config anywhere on the system. Please put the file into your path or specify it in CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE.")
-    MARK_AS_ADVANCED(CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE)
-  ENDIF(CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE)
-
-  
-  
-ELSE(UNIX)
-  MESSAGE(SEND_ERROR "FindwxWindows.cmake:  Platform unknown/unsupported by FindwxWindows.cmake. It's neither WIN32 nor UNIX")
-ENDIF(UNIX)
-ENDIF(WIN32)
-
-
-IF(WXWINDOWS_LIBRARIES)
-  IF(WXWINDOWS_INCLUDE_DIR OR CMAKE_WXWINDOWS_CXX_FLAGS)
-    
-    ## found all we need.
-    SET(WXWINDOWS_FOUND 1)
-    
-    ## set deprecated variables for backward compatibility: 
-    SET(CMAKE_WX_CAN_COMPILE   ${WXWINDOWS_FOUND})
-    SET(WXWINDOWS_LIBRARY      ${WXWINDOWS_LIBRARIES})
-    SET(WXWINDOWS_INCLUDE_PATH ${WXWINDOWS_INCLUDE_DIR})
-    SET(CMAKE_WX_CXX_FLAGS     ${CMAKE_WXWINDOWS_CXX_FLAGS})
-    
-  ENDIF(WXWINDOWS_INCLUDE_DIR OR CMAKE_WXWINDOWS_CXX_FLAGS)
-ENDIF(WXWINDOWS_LIBRARIES)
+##
+## This module finds if wxWindows is installed and determines where the
+## include files and libraries are. It also determines what the name of
+## the library is. This code sets the following variables:
+##
+## ------------------------------------------------------------------
+##
+## WXWINDOWS_FOUND            = system has WxWindows (in desired config. build)
+##
+## WXWINDOWS_LIBRARIES        = full path to the wxWindows libraries
+##                              on Unix/Linux with additional linker flags from
+##                              "wx-config --libs"
+## 
+## CMAKE_WXWINDOWS_CXX_FLAGS  = Unix compiler flags for wxWindows, essentially
+##                              "`wx-config --cxxflags`"
+##
+## WXWINDOWS_INCLUDE_DIR      = where to find headers "wx/wx.h" "wx/setup.h"
+##
+## WXWINDOWS_LINK_DIRECTORIES = link directories, useful for rpath on Unix
+##
+## WXWINDOWS_DEFINITIONS      = extra defines
+##
+## deprecated: 
+##   * CMAKE_WX_CAN_COMPILE
+##   * WXWINDOWS_LIBRARY
+##   * CMAKE_WX_CXX_FLAGS
+##   * WXWINDOWS_INCLUDE_PATH
+##
+## ------------------------------------------------------------------
+##
+## USAGE: 
+##   # for convenience include Use_wxWindows.cmake in your projects
+##     CMakeLists.txt: 
+##   
+##   # if you need OpenGL support please
+## SET(WXWINDOWS_USE_GL 1) 
+##   # in your CMakeLists.txt *before* you include this file.
+##
+##   # just include Use_wxWindows.cmake 
+##   # in your projects CMakeLists.txt
+## INCLUDE( ${CMAKE_ROOT}/Modules/Use_wxWindows.cmake)
+## 
+## ------------------------------------------------------------------
+## Author Jan Woetzel <http://www.mip.informatik.uni-kiel.de/~jw> (07/2003)
+## ------------------------------------------------------------------
+## 
+## -changed variable names to conventions from cmakes readme.txt (Jan Woetzel
+##  07/07/2003)
+## -added definition WINVER for WIN32 (Jan Woetzel 07/07//2003)
+## -added IF(CMAKE_WXWINDOWS_CONFIG_EXECUTABLE) found and changed
+##  CMAKE_WX_CONFIG to CMAKE_WXWINDOWS_CONFIG_EXECUTABLE (Jan Woetzel
+##  07/22/2003)
+## -removed OPTION for CMAKE_WXWINDOWS_USE_GL. Force the developer to SET it.
+## 
+## status: 
+## tested with:
+##   -cmake 1.6.7, Linux (Suse 7.3), wxWindows 2.4.0, gcc 2.95
+##   -cmake 1.6.7, Linux (Suse 8.2), wxWindows 2.4.0, gcc 3.3
+##   -cmake 1.6.7, Linux (Suse 8.2), wxWindows 2.4.1-patch1,  gcc 3.3
+##   -cmake 1.6.7, MS Windows XP home, wxWindows 2.4.1, MS Visual Studio .net 7
+##    2002 (static build)
+## 
+## TODO: 
+##  -OPTION for unicode builds 
+##  -change WXWINDOWS_USE_GL to use FindOpenGL.cmake or let the user do it
+##  -testing of DLL linking under MS WIN32
+## 
+
+IF(WIN32)
+  SET(WIN32_STYLE_FIND 1)
+ENDIF(MINGW)
+IF(MINGW)
+  SET(WIN32_STYLE_FIND 0)
+  SET(UNIX_STYLE_FIND 1)
+ENDIF(MINGW)
+IF(UNIX)
+  SET(UNIX_STYLE_FIND 1)
+ENDIF(MINGW)
+
+
+IF(WIN32_STYLE_FIND)
+  
+  ## ######################################################################
+  ##
+  ## Windows specific:
+  ##
+  ## candidates for root/base directory of wxwindows
+  ## should have subdirs include and lib containing include/wx/wx.h
+  ## fix the root dir to avoid mixing of headers/libs from different
+  ## versions/builds:
+  
+  SET (WXWINDOWS_POSSIBLE_ROOT_PATHS
+    $ENV{WXWIN}
+    "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\wxWindows_is1;Inno Setup: App Path]" )
+  
+  FIND_PATH(WXWINDOWS_ROOT_DIR  include/wx/wx.h 
+    ${WXWINDOWS_POSSIBLE_ROOT_PATHS} )
+  
+  ## MESSAGE("DBG found WXWINDOWS_ROOT_DIR: ${WXWINDOWS_ROOT_DIR}")
+  
+  ## find libs for combination of static/shared with release/debug
+  SET (WXWINDOWS_POSSIBLE_LIB_PATHS
+    "${WXWINDOWS_ROOT_DIR}/lib" )
+  
+  FIND_LIBRARY(WXWINDOWS_STATIC_LIBRARY
+    NAMES wx wxmsw
+    PATHS ${WXWINDOWS_POSSIBLE_LIB_PATHS}
+    DOC "wxWindows static release build library" )
+  
+  FIND_LIBRARY(WXWINDOWS_STATIC_DEBUG_LIBRARY
+    NAMES wxd wxmswd
+    PATHS ${WXWINDOWS_POSSIBLE_LIB_PATHS} 
+    DOC "wxWindows static debug build library" )
+  
+  FIND_LIBRARY(WXWINDOWS_SHARED_LIBRARY
+    NAMES wxmsw24 wxmsw241 wxmsw240 wx23_2 wx22_9 
+    PATHS ${WXWINDOWS_POSSIBLE_LIB_PATHS} 
+    DOC "wxWindows shared release build library" )
+  
+  FIND_LIBRARY(WXWINDOWS_SHARED_DEBUG_LIBRARY
+    NAMES wxmsw24d wxmsw241d wxmsw240d wx23_2d wx22_9d 
+    PATHS ${WXWINDOWS_POSSIBLE_LIB_PATHS} 
+    DOC "wxWindows shared debug build library " )
+  
+  
+  ## if there is at least one shared lib available
+  ## let user choose wether to use shared or static wxwindows libs 
+  IF(WXWINDOWS_SHARED_LIBRARY OR WXWINDOWS_SHARED_DEBUG_LIBRARY)
+    ## default value OFF because wxWindows MSVS default build is static
+    OPTION(WXWINDOWS_USE_SHARED_LIBS
+      "Use shared versions (dll) of wxWindows libraries?" OFF)
+    MARK_AS_ADVANCED(WXWINDOWS_USE_SHARED_LIBS)
+  ENDIF(WXWINDOWS_SHARED_LIBRARY OR WXWINDOWS_SHARED_DEBUG_LIBRARY)
+  
+  
+  ## add system libraries wxwindows depends on
+  SET(CMAKE_WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
+    comctl32
+    rpcrt4
+    wsock32
+    ##  presumably ctl3d32 is not neccesary (Jan Woetzel 07/2003)
+    #   ctl3d32
+    #    debug ${WXWINDOWS_ROOT_DIR}/lib/zlibd.lib  optimized ${WXWINDOWS_ROOT_DIR}/lib/zlibd.lib
+    #    debug ${WXWINDOWS_ROOT_DIR}/lib/regexd.lib optimized ${WXWINDOWS_ROOT_DIR}/lib/regexd.lib 
+    #    debug ${WXWINDOWS_ROOT_DIR}/lib/pngd.lib   optimized ${WXWINDOWS_ROOT_DIR}/lib/pngd.lib
+    #    debug ${WXWINDOWS_ROOT_DIR}/lib/jpegd.lib  optimized ${WXWINDOWS_ROOT_DIR}/lib/jpegd.lib
+    #    debug ${WXWINDOWS_ROOT_DIR}/lib/tiffd.lib  optimized ${WXWINDOWS_ROOT_DIR}/lib/tiff.lib
+    )
+  
+  # JW removed option and force the develper th SET it. 
+  # OPTION(WXWINDOWS_USE_GL "use wxWindows with GL support (use additional
+  # opengl, glu libs)?" OFF)
+  
+  ## opengl/glu: (TODO/FIXME: better use FindOpenGL.cmake here 
+  IF (WXWINDOWS_USE_GL)
+    SET(CMAKE_WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
+      opengl32
+      glu32
+      )
+  ENDIF (WXWINDOWS_USE_GL)
+  
+  
+  ##
+  ## select between use of  shared or static wxWindows lib then set libs to use
+  ## for debug and optimized build.  so the user can switch between debug and
+  ## release build e.g. within MS Visual Studio without running cmake with a
+  ## different build directory again.
+  ## 
+  ## then add the build specific include dir for wx/setup.h
+  ## 
+  
+  IF(WXWINDOWS_USE_SHARED_LIBS)
+    ##MESSAGE("DBG wxWindows use shared lib selected.")
+    
+    ## shared: both wx (debug and release) found?
+    IF(WXWINDOWS_SHARED_DEBUG_LIBRARY AND WXWINDOWS_SHARED_LIBRARY)
+      ##MESSAGE("DBG wx shared: debug and optimized found.")
+      SET(WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
+        debug     ${WXWINDOWS_SHARED_DEBUG_LIBRARY}
+        optimized ${WXWINDOWS_SHARED_LIBRARY} )
+      FIND_PATH(WXWINDOWS_INCLUDE_DIR_SETUPH  wx/setup.h
+        ${WXWINDOWS_ROOT_DIR}/lib/mswdlld
+        ${WXWINDOWS_ROOT_DIR}/lib/mswdll )
+    ENDIF(WXWINDOWS_SHARED_DEBUG_LIBRARY AND WXWINDOWS_SHARED_LIBRARY)
+    
+    ## shared: only debug wx lib found?
+    IF(WXWINDOWS_SHARED_DEBUG_LIBRARY)
+      IF(NOT WXWINDOWS_SHARED_LIBRARY)
+        ##MESSAGE("DBG wx shared: debug (but no optimized) found.")
+        SET(WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
+          ${WXWINDOWS_SHARED_DEBUG_LIBRARY} )
+        FIND_PATH(WXWINDOWS_INCLUDE_DIR_SETUPH  wx/setup.h
+          ${WXWINDOWS_ROOT_DIR}/lib/mswdlld )
+      ENDIF(NOT WXWINDOWS_SHARED_LIBRARY)
+    ENDIF(WXWINDOWS_SHARED_DEBUG_LIBRARY)
+    
+    ## shared: only release wx lib found?
+    IF(NOT WXWINDOWS_SHARED_DEBUG_LIBRARY)
+      IF(WXWINDOWS_SHARED_LIBRARY)
+        ##MESSAGE("DBG wx shared: optimized (but no debug) found.")
+        SET(WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
+          ${WXWINDOWS_SHARED_DEBUG_LIBRARY} )
+        FIND_PATH(WXWINDOWS_INCLUDE_DIR_SETUPH  wx/setup.h
+          ${WXWINDOWS_ROOT_DIR}/lib/mswdll )
+      ENDIF(WXWINDOWS_SHARED_LIBRARY)    
+    ENDIF(NOT WXWINDOWS_SHARED_DEBUG_LIBRARY)
+    
+    ## shared: none found?
+    IF(NOT WXWINDOWS_SHARED_DEBUG_LIBRARY)
+      IF(NOT WXWINDOWS_SHARED_LIBRARY)
+        MESSAGE(SEND_ERROR 
+          "No shared wxWindows lib found, but WXWINDOWS_USE_SHARED_LIBS=${WXWINDOWS_USE_SHARED_LIBS}.")
+      ENDIF(NOT WXWINDOWS_SHARED_LIBRARY)
+    ENDIF(NOT WXWINDOWS_SHARED_DEBUG_LIBRARY)
+
+
+  ELSE(WXWINDOWS_USE_SHARED_LIBS)
+    ##MESSAGE("DBG wxWindows static lib selected.")
+
+    ## static: both wx (debug and release) found?
+    IF(WXWINDOWS_STATIC_DEBUG_LIBRARY AND WXWINDOWS_STATIC_LIBRARY)
+      ##MESSAGE("DBG wx static: debug and optimized found.")
+      SET(WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
+        debug     ${WXWINDOWS_STATIC_DEBUG_LIBRARY}
+        optimized ${WXWINDOWS_STATIC_LIBRARY} )
+      FIND_PATH(WXWINDOWS_INCLUDE_DIR_SETUPH  wx/setup.h
+        ${WXWINDOWS_ROOT_DIR}/lib/mswd
+        ${WXWINDOWS_ROOT_DIR}/lib/msw )
+    ENDIF(WXWINDOWS_STATIC_DEBUG_LIBRARY AND WXWINDOWS_STATIC_LIBRARY)
+    
+    ## static: only debug wx lib found?
+    IF(WXWINDOWS_STATIC_DEBUG_LIBRARY)
+      IF(NOT WXWINDOWS_STATIC_LIBRARY)
+        ##MESSAGE("DBG wx static: debug (but no optimized) found.")
+        SET(WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
+          ${WXWINDOWS_STATIC_DEBUG_LIBRARY} )
+        FIND_PATH(WXWINDOWS_INCLUDE_DIR_SETUPH  wx/setup.h
+          ${WXWINDOWS_ROOT_DIR}/lib/mswd )
+      ENDIF(NOT WXWINDOWS_STATIC_LIBRARY)
+    ENDIF(WXWINDOWS_STATIC_DEBUG_LIBRARY)
+    
+    ## static: only release wx lib found?
+    IF(NOT WXWINDOWS_STATIC_DEBUG_LIBRARY)
+      IF(WXWINDOWS_STATIC_LIBRARY)
+        ##MESSAGE("DBG wx static: optimized (but no debug) found.")
+        SET(WXWINDOWS_LIBRARIES ${CMAKE_WXWINDOWS_LIBRARIES}
+          ${WXWINDOWS_STATIC_DEBUG_LIBRARY} )
+        FIND_PATH(WXWINDOWS_INCLUDE_DIR_SETUPH  wx/setup.h
+          ${WXWINDOWS_ROOT_DIR}/lib/msw )
+      ENDIF(WXWINDOWS_STATIC_LIBRARY)
+    ENDIF(NOT WXWINDOWS_STATIC_DEBUG_LIBRARY)
+    
+    ## static: none found?
+    IF(NOT WXWINDOWS_STATIC_DEBUG_LIBRARY)
+      IF(NOT WXWINDOWS_STATIC_LIBRARY)
+        MESSAGE(SEND_ERROR 
+          "No static wxWindows lib found, but WXWINDOWS_USE_SHARED_LIBS=${WXWINDOWS_USE_SHARED_LIBS}.")
+      ENDIF(NOT WXWINDOWS_STATIC_LIBRARY)
+    ENDIF(NOT WXWINDOWS_STATIC_DEBUG_LIBRARY)
+    
+  ENDIF(WXWINDOWS_USE_SHARED_LIBS)  
+  
+  
+  ## not neccessary in wxWindows 2.4.1 
+  ## but it may fix a previous bug, see
+  ## http://lists.wxwindows.org/cgi-bin/ezmlm-cgi?8:mss:37574:200305:mpdioeneabobmgjenoap
+  OPTION(WXWINDOWS_SET_DEFINITIONS "Set additional defines for wxWindows" OFF)
+  MARK_AS_ADVANCED(WXWINDOWS_SET_DEFINITIONS)
+  IF (WXWINDOWS_SET_DEFINITIONS) 
+    SET(WXWINDOWS_DEFINITIONS "-DWINVER=0x400")
+  ELSE (WXWINDOWS_SET_DEFINITIONS) 
+    # clear:
+    SET(WXWINDOWS_DEFINITIONS "")
+  ENDIF (WXWINDOWS_SET_DEFINITIONS) 
+  
+  
+  ## Find the include directories for wxwindows
+  ## the first, build specific for wx/setup.h was determined before.
+  ## add inc dir for general for "wx/wx.h" 
+  SET (WXWINDOWS_POSSIBLE_INCLUDE_PATHS
+    "${WXWINDOWS_ROOT_DIR}/include"
+    )
+  FIND_PATH(WXWINDOWS_INCLUDE_DIR  wx/wx.h 
+    ${WXWINDOWS_POSSIBLE_INCLUDE_PATHS}
+    )  
+  # append the build specific include dir for wx/setup.h:
+  IF (WXWINDOWS_INCLUDE_DIR_SETUPH)
+    SET(WXWINDOWS_INCLUDE_DIR ${WXWINDOWS_INCLUDE_DIR} ${WXWINDOWS_INCLUDE_DIR_SETUPH} )
+  ENDIF (WXWINDOWS_INCLUDE_DIR_SETUPH)
+  
+  MARK_AS_ADVANCED(
+    WXWINDOWS_ROOT_DIR
+    WXWINDOWS_INCLUDE_DIR
+    WXWINDOWS_INCLUDE_DIR_SETUPH
+    WXWINDOWS_STATIC_LIBRARY
+    WXWINDOWS_STATIC_DEBUG_LIBRARY
+    WXWINDOWS_SHARED_LIBRARY
+    WXWINDOWS_SHARED_DEBUG_LIBRARY
+    )
+  
+  
+ELSE(WIN32_STYLE_FIND)
+  IF (UNIX_STYLE_FIND) 
+    ## ######################################################################
+    ## 
+    ## UNIX/Linux specific:
+    ## 
+    ## use backquoted wx-config to query and set flags and libs:
+    ## 06/2003 Jan Woetzel
+    ## 
+    
+    OPTION(WXWINDOWS_USE_SHARED_LIBS "Use shared versions (.so) of wxWindows libraries" ON)
+    MARK_AS_ADVANCED(WXWINDOWS_USE_SHARED_LIBS)
+
+    # JW removed option and force the develper th SET it. 
+    # OPTION(WXWINDOWS_USE_GL "use wxWindows with GL support (use additional
+    # --gl-libs for wx-config)?" OFF)
+    
+    # wx-config should be in your path anyhow, usually no need to set WXWIN or
+    # search in ../wx or ../../wx
+    FIND_PROGRAM(CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE wx-config
+      $ENV{WXWIN}
+      ../wx/bin
+      ../../wx/bin )
+    
+    # check wether wx-config was found:
+    IF(CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE)    
+
+      # use shared/static wx lib?
+      # remember: always link shared to use systems GL etc. libs (no static
+      # linking, just link *against* static .a libs)
+      IF(WXWINDOWS_USE_SHARED_LIBS)
+        SET(WX_CONFIG_ARGS_LIBS "--libs")
+      ELSE(WXWINDOWS_USE_SHARED_LIBS)
+        SET(WX_CONFIG_ARGS_LIBS "--static --libs")
+      ENDIF(WXWINDOWS_USE_SHARED_LIBS)
+      
+      # do we need additionial wx GL stuff like GLCanvas ?
+      IF(WXWINDOWS_USE_GL)
+        SET(WX_CONFIG_ARGS_LIBS "${WX_CONFIG_ARGS_LIBS} --gl-libs" )
+      ENDIF(WXWINDOWS_USE_GL)
+      ##MESSAGE("DBG: WX_CONFIG_ARGS_LIBS=${WX_CONFIG_ARGS_LIBS}===")
+      
+      # set CXXFLAGS to be fed into CMAKE_CXX_FLAGS by the user:
+      SET(CMAKE_WXWINDOWS_CXX_FLAGS "`${CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE} --cxxflags`")
+      ##MESSAGE("DBG: for compilation:
+      ##CMAKE_WXWINDOWS_CXX_FLAGS=${CMAKE_WXWINDOWS_CXX_FLAGS}===")
+
+      # keep the back-quoted string for clarity
+      SET(WXWINDOWS_LIBRARIES "`${CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE} ${WX_CONFIG_ARGS_LIBS}`")
+      ##MESSAGE("DBG2: for linking:
+      ##WXWINDOWS_LIBRARIES=${WXWINDOWS_LIBRARIES}===")
+      
+      # evaluate wx-config output to separate linker flags and linkdirs for
+      # rpath:
+      EXEC_PROGRAM(${CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE}
+        ARGS ${WX_CONFIG_ARGS_LIBS}
+        OUTPUT_VARIABLE WX_CONFIG_LIBS )
+      
+      ## extract linkdirs (-L) for rpath
+      ## use regular expression to match wildcard equivalent "-L*<endchar>"
+      ## with <endchar> is a space or a semicolon
+      STRING(REGEX MATCHALL "[-][L]([^ ;])+" WXWINDOWS_LINK_DIRECTORIES_WITH_PREFIX "${WX_CONFIG_LIBS}" )
+      #MESSAGE("DBG  WXWINDOWS_LINK_DIRECTORIES_WITH_PREFIX=${WXWINDOWS_LINK_DIRECTORIES_WITH_PREFIX}")
+      
+      ## remove prefix -L because we need the pure directory for LINK_DIRECTORIES
+      ## replace -L by ; because the separator seems to be lost otherwise (bug or
+      ## feature?)
+      IF(WXWINDOWS_LINK_DIRECTORIES_WITH_PREFIX)
+        STRING(REGEX REPLACE "[-][L]" ";" WXWINDOWS_LINK_DIRECTORIES ${WXWINDOWS_LINK_DIRECTORIES_WITH_PREFIX} )
+        #MESSAGE("DBG  WXWINDOWS_LINK_DIRECTORIES=${WXWINDOWS_LINK_DIRECTORIES}")
+      ENDIF(WXWINDOWS_LINK_DIRECTORIES_WITH_PREFIX)
+
+      
+      ## replace space separated string by semicolon separated vector to make it
+      ## work with LINK_DIRECTORIES
+      SEPARATE_ARGUMENTS(WXWINDOWS_LINK_DIRECTORIES)
+      
+      MARK_AS_ADVANCED(
+        CMAKE_WXWINDOWS_CXX_FLAGS
+        WXWINDOWS_INCLUDE_DIR
+        WXWINDOWS_LIBRARIES
+        CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE
+        )
+      
+      
+      # we really need wx-config...
+    ELSE(CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE)    
+      MESSAGE(SEND_ERROR "Cannot find wx-config anywhere on the system. Please put the file into your path or specify it in CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE.")
+      MARK_AS_ADVANCED(CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE)
+    ENDIF(CMAKE_WXWINDOWS_WXCONFIG_EXECUTABLE)
+
+    
+    
+  ELSE(UNIX_STYLE_FIND)
+    MESSAGE(SEND_ERROR "FindwxWindows.cmake:  Platform unknown/unsupported by FindwxWindows.cmake. It's neither WIN32 nor UNIX")
+  ENDIF(UNIX_STYLE_FIND)
+ENDIF(WIN32_STYLE_FIND)
+
+
+IF(WXWINDOWS_LIBRARIES)
+  IF(WXWINDOWS_INCLUDE_DIR OR CMAKE_WXWINDOWS_CXX_FLAGS)
+    
+    ## found all we need.
+    SET(WXWINDOWS_FOUND 1)
+    
+    ## set deprecated variables for backward compatibility: 
+    SET(CMAKE_WX_CAN_COMPILE   ${WXWINDOWS_FOUND})
+    SET(WXWINDOWS_LIBRARY      ${WXWINDOWS_LIBRARIES})
+    SET(WXWINDOWS_INCLUDE_PATH ${WXWINDOWS_INCLUDE_DIR})
+    SET(CMAKE_WX_CXX_FLAGS     ${CMAKE_WXWINDOWS_CXX_FLAGS})
+    
+  ENDIF(WXWINDOWS_INCLUDE_DIR OR CMAKE_WXWINDOWS_CXX_FLAGS)
+ENDIF(WXWINDOWS_LIBRARIES)