findwxwidgets.cmake

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# - Find a wxWidgets (a.k.a., wxWindows) installation.
# This module finds if wxWidgets is installed and selects a default
# configuration to use. wxWidgets is a modular library. To specify the
# modules that you will use, you need to name them as components to
# the package:
# 
# FIND_PACKAGE(wxWidgets COMPONENTS base core ...)
# 
# There are two search branches: a windows style and a unix style. For
# windows, the following variables are searched for and set to
# defaults in case of multiple choices. Change them if the defaults
# are not desired (i.e., these are the only variables you should
# change to select a configuration):
#
#  wxWidgets_ROOT_DIR      - Base wxWidgets directory
#                            (e.g., C:/wxWidgets-2.6.3).
#  wxWidgets_LIB_DIR       - Path to wxWidgets libraries
#                            (e.g., C:/wxWidgets-2.6.3/lib/vc_lib).
#  wxWidgets_CONFIGURATION - Configuration to use
#                            (e.g., msw, mswd, mswu, mswunivud, etc.)
# 
# For unix style it uses the wx-config utility. You can select between
# debug/release, unicode/ansi, universal/non-universal, and
# static/shared in the QtDialog or ccmake interfaces by turning ON/OFF
# the following variables:
#
#  wxWidgets_USE_DEBUG
#  wxWidgets_USE_UNICODE
#  wxWidgets_USE_UNIVERSAL
#  wxWidgets_USE_STATIC
#  
# The following are set after the configuration is done for both
# windows and unix style:
#
#  wxWidgets_FOUND            - Set to TRUE if wxWidgets was found.
#  wxWidgets_INCLUDE_DIRS     - Include directories for WIN32
#                               i.e., where to find "wx/wx.h" and
#                               "wx/setup.h"; possibly empty for unices.
#  wxWidgets_LIBRARIES        - Path to the wxWidgets libraries.
#  wxWidgets_LIBRARY_DIRS     - compile time link dirs, useful for
#                               rpath on UNIX. Typically an empty string
#                               in WIN32 environment.
#  wxWidgets_DEFINITIONS      - Contains defines required to compile/link
#                               against WX, e.g. -DWXUSINGDLL
#  wxWidgets_CXX_FLAGS        - Include dirs and ompiler flags for
#                               unices, empty on WIN32. Esentially
#                               "`wx-config --cxxflags`".
#  wxWidgets_USE_FILE         - Convenience include file.
#
# Sample usage:
#   FIND_PACKAGE(wxWidgets COMPONENTS base core gl net)
#   IF(wxWidgets_FOUND)
#     INCLUDE(${wxWidgets_USE_FILE})
#     # and for each of your dependant executable/library targets:
#     TARGET_LINK_LIBRARIES(<YourTarget> ${wxWidgets_LIBRARIES})
#   ENDIF(wxWidgets_FOUND)
#
# If wxWidgets is required (i.e., not an optional part):
#   FIND_PACKAGE(wxWidgets REQUIRED base core gl net)
#   INCLUDE(${wxWidgets_USE_FILE})
#   # and for each of your dependant executable/library targets:
#   TARGET_LINK_LIBRARIES(<YourTarget> ${wxWidgets_LIBRARIES})

#
# FIXME: check this and provide a correct sample usage...
#        Remember to connect back to the upper text.
# Sample usage with monolithic wx build:
#
#   FIND_PACKAGE(wxWidgets COMPONENTS mono)
#   ...


# NOTES
#
# This module has been tested on the WIN32 platform with wxWidgets
# 2.6.2, 2.6.3, and 2.5.3. However, it has been designed to
# easily extend support to all possible builds, e.g., static/shared,
# debug/release, unicode, universal, multilib/monolithic, etc..
#
# If you want to use the module and your build type is not supported
# out-of-the-box, please contact me to exchange information on how
# your system is setup and I'll try to add support for it.
#
# AUTHOR
#
# Miguel A. Figueroa-Villanueva (miguelf at ieee dot org).
# Jan Woetzel (jw at mip.informatik.uni-kiel.de).
#
# Based on previous works of:
# Jan Woetzel (FindwxWindows.cmake),
# Jorgen Bodde and Jerry Fath (FindwxWin.cmake).

# TODO/ideas
#
# (1) Option/Setting to use all available wx libs
# In contrast to expert developer who lists the
# minimal set of required libs in wxWidgets_USE_LIBS
# there is the newbie user:
#   - who just wants to link against WX with more 'magic'
#   - doesn't know the internal structure of WX or how it was built,
#     in particular if it is monolithic or not
#   - want to link against all available WX libs
# Basically, the intent here is to mimic what wx-config would do by
# default (i.e., `wx-config --libs`).
#
# Possible solution:
#   Add a reserved keyword "std" that initializes to what wx-config
# would default to. If the user has not set the wxWidgets_USE_LIBS,
# default to "std" instead of "base core" as it is now. To implement
# "std" will basically boil down to a FOR_EACH lib-FOUND, but maybe
# checking whether a minimal set was found.


# FIXME: This and all the DBG_MSG calls should be removed after the
# module stabilizes.
# 
# Helper macro to control the debugging output globally. There are
# two versions for controlling how verbose your output should be.
MACRO(DBG_MSG _MSG)
#  MESSAGE(STATUS
#    "${CMAKE_CURRENT_LIST_FILE}(${CMAKE_CURRENT_LIST_LINE}): ${_MSG}")
ENDMACRO(DBG_MSG)
MACRO(DBG_MSG_V _MSG)
#  MESSAGE(STATUS
#    "${CMAKE_CURRENT_LIST_FILE}(${CMAKE_CURRENT_LIST_LINE}): ${_MSG}")
ENDMACRO(DBG_MSG_V)

# 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    "")

# Using SYSTEM with INCLUDE_DIRECTORIES in conjunction with wxWidgets on
# the Mac produces compiler errors. Set wxWidgets_INCLUDE_DIRS_NO_SYSTEM
# to prevent UsewxWidgets.cmake from using SYSTEM.
#
# See cmake mailing list discussions for more info:
#   http://www.cmake.org/pipermail/cmake/2008-April/021115.html
#   http://www.cmake.org/pipermail/cmake/2008-April/021146.html
#
IF(APPLE)
  SET(wxWidgets_INCLUDE_DIRS_NO_SYSTEM 1)
ENDIF(APPLE)

# DEPRECATED: This is a patch to support the DEPRECATED use of
# wxWidgets_USE_LIBS.
#
# If wxWidgets_USE_LIBS is set:
# - if using <components>, then override wxWidgets_USE_LIBS
# - 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(wxWidgets_USE_LIBS AND NOT wxWidgets_FIND_COMPONENTS)
DBG_MSG("wxWidgets_FIND_COMPONENTS : ${wxWidgets_FIND_COMPONENTS}")

# Add the convenience use file if available.
#
# Get dir of this file which may reside in:
# - CMAKE_MAKE_ROOT/Modules on CMake installation
# - CMAKE_MODULE_PATH if user prefers his own specialized version
SET(wxWidgets_USE_FILE "")
GET_FILENAME_COMPONENT(
  wxWidgets_CURRENT_LIST_DIR ${CMAKE_CURRENT_LIST_FILE} PATH)
# Prefer an existing customized version, but the user might override
# the FindwxWidgets module and not the UsewxWidgets one.
IF(EXISTS "${wxWidgets_CURRENT_LIST_DIR}/UsewxWidgets.cmake")
  SET(wxWidgets_USE_FILE
    "${wxWidgets_CURRENT_LIST_DIR}/UsewxWidgets.cmake")
ELSE(EXISTS "${wxWidgets_CURRENT_LIST_DIR}/UsewxWidgets.cmake")
  SET(wxWidgets_USE_FILE UsewxWidgets.cmake)
ENDIF(EXISTS "${wxWidgets_CURRENT_LIST_DIR}/UsewxWidgets.cmake")

#=====================================================================
#=====================================================================
IF(WIN32)
  SET(WIN32_STYLE_FIND 1)
ENDIF(WIN32)
IF(MINGW)
  SET(WIN32_STYLE_FIND 0)
  SET(UNIX_STYLE_FIND 1)
ENDIF(MINGW)
IF(UNIX)
  SET(UNIX_STYLE_FIND 1)
ENDIF(UNIX)

#=====================================================================
# WIN32_STYLE_FIND
#=====================================================================
IF(WIN32_STYLE_FIND)
  # 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(wxWidgets_USE_MONOLITHIC)
      SET(wxWidgets_FIND_COMPONENTS base core) # this is default
    ENDIF(wxWidgets_USE_MONOLITHIC)
  ENDIF(NOT wxWidgets_FIND_COMPONENTS)

  # Always add the common required libs.
  LIST(APPEND wxWidgets_FIND_COMPONENTS ${wxWidgets_COMMON_LIBRARIES})

  #-------------------------------------------------------------------
  # 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(${_UCD} STREQUAL ${_CONFIGURATION})
    STRING(REGEX MATCH "d$" ${_DBG} "${_CONFIGURATION}")
  ENDMACRO(WX_GET_NAME_COMPONENTS)

  #
  # 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 ${wxWidgets_COMMON_LIBRARIES})
      FIND_LIBRARY(WX_${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(LIB)

    # Find wxWidgets multilib base libraries.
    FIND_LIBRARY(WX_base${_DBG}
      NAMES
      wxbase29${_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
        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(LIB)

    # Find wxWidgets monolithic library.
    FIND_LIBRARY(WX_mono${_DBG}
      NAMES
      wxmsw${_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)
      FIND_LIBRARY(WX_${LIB}${_DBG}
        NAMES
        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(LIB)
  ENDMACRO(WX_FIND_LIBS)

  #
  # 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(WX_CLEAR_LIB)
  # Clear all debug or release library paths (arguments are "d" or "").
  MACRO(WX_CLEAR_ALL_LIBS _DBG)
    # Clear wxWidgets common libraries.
    FOREACH(LIB ${wxWidgets_COMMON_LIBRARIES})
      WX_CLEAR_LIB(WX_${LIB}${_DBG})
    ENDFOREACH(LIB)

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

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