findqt4.cmake

Gaussian Mixture Algorithm

# - Find QT 4
# This module can be used to find Qt4.
# The most important issue is that the Qt4 qmake is available via the system path.
# This qmake is then used to detect basically everything else.
# This module defines a number of key variables and macros. First is 
# QT_USE_FILE which is the path to a CMake file that can be included to compile
# Qt 4 applications and libraries.  By default, the QtCore and QtGui 
# libraries are loaded. This behavior can be changed by setting one or more 
# of the following variables to true:
#                    QT_DONT_USE_QTCORE
#                    QT_DONT_USE_QTGUI
#                    QT_USE_QT3SUPPORT
#                    QT_USE_QTASSISTANT
#                    QT_USE_QTDESIGNER
#                    QT_USE_QTMOTIF
#                    QT_USE_QTMAIN
#                    QT_USE_QTNETWORK
#                    QT_USE_QTNSPLUGIN
#                    QT_USE_QTOPENGL
#                    QT_USE_QTSQL
#                    QT_USE_QTXML
#                    QT_USE_QTSVG
#                    QT_USE_QTTEST
#                    QT_USE_QTUITOOLS
#
# All the libraries required are stored in a variable called QT_LIBRARIES.  
# Add this variable to your TARGET_LINK_LIBRARIES.
#  
#  macro QT4_WRAP_CPP(outfiles inputfile ... )
#  macro QT4_WRAP_UI(outfiles inputfile ... )
#  macro QT4_ADD_RESOURCE(outfiles inputfile ... )
#  macro QT4_AUTOMOC(inputfile ... )
#  macro QT4_GENERATE_MOC(inputfile outputfile )
#  
#  QT_FOUND         If false, don't try to use Qt.
#  QT4_FOUND        If false, don't try to use Qt 4.
#                      
#  QT_QTCORE_FOUND        True if QtCore was found.
#  QT_QTGUI_FOUND         True if QtGui was found.
#  QT_QT3SUPPORT_FOUND    True if Qt3Support was found.
#  QT_QTASSISTANT_FOUND   True if QtAssistant was found.
#  QT_QTDESIGNER_FOUND    True if QtDesigner was found.
#  QT_QTMOTIF_FOUND       True if QtMotif was found.
#  QT_QTNETWORK_FOUND     True if QtNetwork was found.
#  QT_QTNSPLUGIN_FOUND    True if QtNsPlugin was found.
#  QT_QTOPENGL_FOUND      True if QtOpenGL was found.
#  QT_QTSQL_FOUND         True if QtSql was found.
#  QT_QTXML_FOUND         True if QtXml was found.
#  QT_QTSVG_FOUND         True if QtSvg was found.
#  QT_QTTEST_FOUND        True if QtTest was found.
#  QT_QTUITOOLS_FOUND     True if QtUiTools was found.
#                      
#  QT_DEFINITIONS   Definitions to use when compiling code that uses Qt.
#                  
#  QT_INCLUDES      List of paths to all include directories of 
#                   Qt4 QT_INCLUDE_DIR and QT_QTCORE_INCLUDE_DIR are
#                   always in this variable even if NOTFOUND,
#                   all other INCLUDE_DIRS are
#                   only added if they are found.
#   
#  QT_INCLUDE_DIR              Path to "include" of Qt4
#  QT_QT_INCLUDE_DIR           Path to "include/Qt" 
#  QT_QT3SUPPORT_INCLUDE_DIR   Path to "include/Qt3Support" 
#  QT_QTASSISTANT_INCLUDE_DIR  Path to "include/QtAssistant" 
#  QT_QTCORE_INCLUDE_DIR       Path to "include/QtCore"         
#  QT_QTDESIGNER_INCLUDE_DIR   Path to "include/QtDesigner" 
#  QT_QTGUI_INCLUDE_DIR        Path to "include/QtGui" 
#  QT_QTMOTIF_INCLUDE_DIR      Path to "include/QtMotif" 
#  QT_QTNETWORK_INCLUDE_DIR    Path to "include/QtNetwork" 
#  QT_QTNSPLUGIN_INCLUDE_DIR   Path to "include/QtNsPlugin" 
#  QT_QTOPENGL_INCLUDE_DIR     Path to "include/QtOpenGL" 
#  QT_QTSQL_INCLUDE_DIR        Path to "include/QtSql" 
#  QT_QTXML_INCLUDE_DIR        Path to "include/QtXml" 
#  QT_QTSVG_INCLUDE_DIR        Path to "include/QtSvg"
#  QT_QTTEST_INCLUDE_DIR       Path to "include/QtTest"
#                            
#  QT_LIBRARY_DIR              Path to "lib" of Qt4
#                            
#  QT_PLUGINS_DIR              Path to "plugins" for Qt4
#                            
# For every library of Qt there are three variables:
#  QT_QTFOO_LIBRARY_RELEASE, which contains the full path to the release version
#  QT_QTFOO_LIBRARY_DEBUG, which contains the full path to the debug version
#  QT_QTFOO_LIBRARY, the full path to the release version if available, otherwise to the debug version
#
# So there are the following variables:
# The Qt3Support library:     QT_QT3SUPPORT_LIBRARY
#                             QT_QT3SUPPORT_LIBRARY_RELEASE
#                             QT_QT3SUPPORT_DEBUG
#
# The QtAssistant library:    QT_QTASSISTANT_LIBRARY
#                             QT_QTASSISTANT_LIBRARY_RELEASE
#                             QT_QTASSISTANT_LIBRARY_DEBUG
#
# The QtCore library:         QT_QTCORE_LIBRARY
#                             QT_QTCORE_LIBRARY_RELEASE
#                             QT_QTCORE_LIBRARY_DEBUG
#
# The QtDesigner library:     QT_QTDESIGNER_LIBRARY
#                             QT_QTDESIGNER_LIBRARY_RELEASE
#                             QT_QTDESIGNER_LIBRARY_DEBUG
#
# The QtGui library:          QT_QTGUI_LIBRARY
#                             QT_QTGUI_LIBRARY_RELEASE
#                             QT_QTGUI_LIBRARY_DEBUG
#
# The QtMotif library:        QT_QTMOTIF_LIBRARY
#                             QT_QTMOTIF_LIBRARY_RELEASE
#                             QT_QTMOTIF_LIBRARY_DEBUG
#
# The QtNetwork library:      QT_QTNETWORK_LIBRARY
#                             QT_QTNETWORK_LIBRARY_RELEASE
#                             QT_QTNETWORK_LIBRARY_DEBUG
#
# The QtNsPLugin library:     QT_QTNSPLUGIN_LIBRARY
#                             QT_QTNSPLUGIN_LIBRARY_RELEASE
#                             QT_QTNSPLUGIN_LIBRARY_DEBUG
#
# The QtOpenGL library:       QT_QTOPENGL_LIBRARY
#                             QT_QTOPENGL_LIBRARY_RELEASE
#                             QT_QTOPENGL_LIBRARY_DEBUG
#
# The QtSql library:          QT_QTSQL_LIBRARY
#                             QT_QTSQL_LIBRARY_RELEASE
#                             QT_QTSQL_LIBRARY_DEBUG
#
# The QtXml library:          QT_QTXML_LIBRARY
#                             QT_QTXML_LIBRARY_RELEASE
#                             QT_QTXML_LIBRARY_DEBUG
#
# The QtSvg library:          QT_QTSVG_LIBRARY
#                             QT_QTSVG_LIBRARY_RELEASE
#                             QT_QTSVG_LIBRARY_DEBUG
#
# The QtTest library:         QT_QTTEST_LIBRARY
#                             QT_QTTEST_LIBRARY_RELEASE
#                             QT_QTTEST_LIBRARY_DEBUG
#
# The qtmain library for Windows QT_QTMAIN_LIBRARY
#                             QT_QTMAIN_LIBRARY_RELEASE
#                             QT_QTMAIN_LIBRARY_DEBUG
#
#The QtUiTools library:       QT_QTUITOOLS_LIBRARY
#                             QT_QTUITOOLS_LIBRARY_RELEASE
#                             QT_QTUITOOLS_LIBRARY_DEBUG
#  
# also defined, but NOT for general use are
#  QT_MOC_EXECUTABLE          Where to find the moc tool.
#  QT_UIC_EXECUTABLE          Where to find the uic tool.
#  QT_UIC3_EXECUTABLE         Where to find the uic3 tool.
#  QT_RCC_EXECUTABLE          Where to find the rcc tool
#  
#  QT_DOC_DIR                 Path to "doc" of Qt4
#  QT_MKSPECS_DIR             Path to "mkspecs" of Qt4
#
#
# These are around for backwards compatibility 
# they will be set
#  QT_WRAP_CPP  Set true if QT_MOC_EXECUTABLE is found
#  QT_WRAP_UI   Set true if QT_UIC_EXECUTABLE is found
#  
# These variables do _NOT_ have any effect anymore (compared to FindQt.cmake)
#  QT_MT_REQUIRED         Qt4 is now always multithreaded
#  
# These variables are set to "" Because Qt structure changed 
# (They make no sense in Qt4)
#  QT_QT_LIBRARY        Qt-Library is now split

INCLUDE(CheckSymbolExists)
INCLUDE(MacroAddFileDependencies)

SET(QT_USE_FILE ${CMAKE_ROOT}/Modules/UseQt4.cmake)

SET( QT_DEFINITIONS "")

# check for qmake
FIND_PROGRAM(QT_QMAKE_EXECUTABLE NAMES qmake qmake-qt4 PATHS
  "[HKEY_CURRENT_USER\\Software\\Trolltech\\Qt3Versions\\4.0.0;InstallDir]/bin"
  "[HKEY_CURRENT_USER\\Software\\Trolltech\\Versions\\4.0.0;InstallDir]/bin"
  $ENV{QTDIR}/bin
  )

SET(QT4_INSTALLED_VERSION_TOO_OLD FALSE)

##  macro for asking qmake to process pro files
MACRO(QT_QUERY_QMAKE outvar invar)
  FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmpQmake/tmp.pro
    "message(CMAKE_MESSAGE<$$${invar}>)")
  EXECUTE_PROCESS(COMMAND ${QT_QMAKE_EXECUTABLE}
    WORKING_DIRECTORY  
    ${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmpQmake
    OUTPUT_VARIABLE _qmake_query_output
    ERROR_VARIABLE _qmake_query_output )
  FILE(REMOVE_RECURSE 
    "${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmpQmake")
  STRING(REGEX REPLACE ".*CMAKE_MESSAGE<([^>]*).*" "\\1" ${outvar} "${_qmake_query_output}")
ENDMACRO(QT_QUERY_QMAKE)


IF (QT_QMAKE_EXECUTABLE)

   SET(QT4_QMAKE_FOUND FALSE)
   
   EXEC_PROGRAM(${QT_QMAKE_EXECUTABLE} ARGS "-query QT_VERSION" OUTPUT_VARIABLE QTVERSION)
  # check for qt3 qmake and then try and find qmake-qt4 in the path
  IF("${QTVERSION}" MATCHES "Unknown")
    SET(QT_QMAKE_EXECUTABLE NOTFOUND CACHE FILEPATH "" FORCE)
    FIND_PROGRAM(QT_QMAKE_EXECUTABLE NAMES qmake-qt4 PATHS
      "[HKEY_CURRENT_USER\\Software\\Trolltech\\Qt3Versions\\4.0.0;InstallDir]/bin"
      "[HKEY_CURRENT_USER\\Software\\Trolltech\\Versions\\4.0.0;InstallDir]/bin"
      $ENV{QTDIR}/bin
      )
    IF(QT_QMAKE_EXECUTABLE)
      EXEC_PROGRAM(${QT_QMAKE_EXECUTABLE} 
        ARGS "-query QT_VERSION" OUTPUT_VARIABLE QTVERSION)
    ENDIF(QT_QMAKE_EXECUTABLE)
  ENDIF("${QTVERSION}" MATCHES "Unknown")
   # check that we found the Qt4 qmake, Qt3 qmake output won't match here
   STRING(REGEX MATCH "^[0-9]+\\.[0-9]+\\.[0-9]+" qt_version_tmp "${QTVERSION}")
   IF (qt_version_tmp)

      # we need at least version 4.0.0
      IF (NOT QT_MIN_VERSION)
         SET(QT_MIN_VERSION "4.0.0")
      ENDIF (NOT QT_MIN_VERSION)
   
      #now parse the parts of the user given version string into variables
      STRING(REGEX MATCH "^[0-9]+\\.[0-9]+\\.[0-9]+" req_qt_major_vers "${QT_MIN_VERSION}")
      IF (NOT req_qt_major_vers)
         MESSAGE( FATAL_ERROR "Invalid Qt version string given: \"${QT_MIN_VERSION}\", expected e.g. \"4.0.1\"")
      ENDIF (NOT req_qt_major_vers)
   
      # now parse the parts of the user given version string into variables
      STRING(REGEX REPLACE "^([0-9]+)\\.[0-9]+\\.[0-9]+" "\\1" req_qt_major_vers "${QT_MIN_VERSION}")
      STRING(REGEX REPLACE "^[0-9]+\\.([0-9])+\\.[0-9]+" "\\1" req_qt_minor_vers "${QT_MIN_VERSION}")
      STRING(REGEX REPLACE "^[0-9]+\\.[0-9]+\\.([0-9]+)" "\\1" req_qt_patch_vers "${QT_MIN_VERSION}")
   
      IF (NOT req_qt_major_vers EQUAL 4)
         MESSAGE( FATAL_ERROR "Invalid Qt version string given: \"${QT_MIN_VERSION}\", major version 4 is required, e.g. \"4.0.1\"")
      ENDIF (NOT req_qt_major_vers EQUAL 4)
   
      # and now the version string given by qmake
      STRING(REGEX REPLACE "^([0-9]+)\\.[0-9]+\\.[0-9]+.*" "\\1" found_qt_major_vers "${QTVERSION}")
      STRING(REGEX REPLACE "^[0-9]+\\.([0-9])+\\.[0-9]+.*" "\\1" found_qt_minor_vers "${QTVERSION}")
      STRING(REGEX REPLACE "^[0-9]+\\.[0-9]+\\.([0-9]+).*" "\\1" found_qt_patch_vers "${QTVERSION}")
   
      # compute an overall version number which can be compared at once
      MATH(EXPR req_vers "${req_qt_major_vers}*10000 + ${req_qt_minor_vers}*100 + ${req_qt_patch_vers}")
      MATH(EXPR found_vers "${found_qt_major_vers}*10000 + ${found_qt_minor_vers}*100 + ${found_qt_patch_vers}")
   
      IF (found_vers LESS req_vers)
         SET(QT4_QMAKE_FOUND FALSE)
         SET(QT4_INSTALLED_VERSION_TOO_OLD TRUE)
      ELSE (found_vers LESS req_vers)
    SET(QT4_QMAKE_FOUND TRUE)
      ENDIF (found_vers LESS req_vers)
   ENDIF (qt_version_tmp)

ENDIF (QT_QMAKE_EXECUTABLE)

IF (QT4_QMAKE_FOUND)

  # ask qmake for the library dir
  # Set QT_LIBRARY_DIR
  IF (NOT QT_LIBRARY_DIR)
    EXEC_PROGRAM( ${QT_QMAKE_EXECUTABLE}
      ARGS "-query QT_INSTALL_LIBS"
      OUTPUT_VARIABLE QT_LIBRARY_DIR_TMP )
    IF(EXISTS "${QT_LIBRARY_DIR_TMP}")
      SET(QT_LIBRARY_DIR ${QT_LIBRARY_DIR_TMP} CACHE PATH "Qt library dir")
    ELSE(EXISTS "${QT_LIBRARY_DIR_TMP}")
      MESSAGE("Warning: QT_QMAKE_EXECUTABLE reported QT_INSTALL_LIBS as ${QT_LIBRARY_DIR_TMP}")
       MESSAGE("Warning: ${QT_LIBRARY_DIR_TMP} does NOT exist, Qt must NOT be installed correctly.")
    ENDIF(EXISTS "${QT_LIBRARY_DIR_TMP}")
  ENDIF(NOT QT_LIBRARY_DIR)
  
  IF (APPLE)
    IF (EXISTS ${QT_LIBRARY_DIR}/QtCore.framework)
      SET(QT_USE_FRAMEWORKS ON
        CACHE BOOL "Set to ON if Qt build uses frameworks.")
    ELSE (EXISTS ${QT_LIBRARY_DIR}/QtCore.framework)
      SET(QT_USE_FRAMEWORKS OFF
        CACHE BOOL "Set to ON if Qt build uses frameworks.")
    ENDIF (EXISTS ${QT_LIBRARY_DIR}/QtCore.framework)
    
    MARK_AS_ADVANCED(QT_USE_FRAMEWORKS)
  ENDIF (APPLE)
  
  # ask qmake for the binary dir
  IF (NOT QT_BINARY_DIR)
     EXEC_PROGRAM(${QT_QMAKE_EXECUTABLE}
        ARGS "-query QT_INSTALL_BINS"
        OUTPUT_VARIABLE qt_bins )
     SET(QT_BINARY_DIR ${qt_bins} CACHE INTERNAL "")
  ENDIF (NOT QT_BINARY_DIR)

  # ask qmake for the include dir
  IF (NOT QT_HEADERS_DIR)
      EXEC_PROGRAM( ${QT_QMAKE_EXECUTABLE}
        ARGS "-query QT_INSTALL_HEADERS" 
        OUTPUT_VARIABLE qt_headers )
      SET(QT_HEADERS_DIR ${qt_headers} CACHE INTERNAL "")
  ENDIF(NOT QT_HEADERS_DIR)


  # ask qmake for the documentation directory
  IF (NOT QT_DOC_DIR)
    EXEC_PROGRAM( ${QT_QMAKE_EXECUTABLE}
      ARGS "-query QT_INSTALL_DOCS"
      OUTPUT_VARIABLE qt_doc_dir )
    SET(QT_DOC_DIR ${qt_doc_dir} CACHE PATH "The location of the Qt docs")
  ENDIF (NOT QT_DOC_DIR)

  # ask qmake for the mkspecs directory
  IF (NOT QT_MKSPECS_DIR)
    EXEC_PROGRAM( ${QT_QMAKE_EXECUTABLE}
      ARGS "-query QMAKE_MKSPECS"
      OUTPUT_VARIABLE qt_mkspecs_dir )
    SET(QT_MKSPECS_DIR ${qt_mkspecs_dir} CACHE PATH "The location of the Qt mkspecs")
  ENDIF (NOT QT_MKSPECS_DIR)

  # ask qmake for the plugins directory
  IF (NOT QT_PLUGINS_DIR)
    EXEC_PROGRAM( ${QT_QMAKE_EXECUTABLE}
      ARGS "-query QT_INSTALL_PLUGINS"
      OUTPUT_VARIABLE qt_plugins_dir )
    SET(QT_PLUGINS_DIR ${qt_plugins_dir} CACHE PATH "The location of the Qt plugins")
  ENDIF (NOT QT_PLUGINS_DIR)
  ########################################
  #
  #       Setting the INCLUDE-Variables
  #
  ########################################

  FIND_PATH(QT_QTCORE_INCLUDE_DIR QtGlobal
    ${QT_HEADERS_DIR}/QtCore
    ${QT_LIBRARY_DIR}/QtCore.framework/Headers
    NO_DEFAULT_PATH
   )

  # Set QT_INCLUDE_DIR by removine "/QtCore" in the string ${QT_QTCORE_INCLUDE_DIR}
  IF( QT_QTCORE_INCLUDE_DIR AND NOT QT_INCLUDE_DIR)
    IF (QT_USE_FRAMEWORKS)
      SET(QT_INCLUDE_DIR ${QT_HEADERS_DIR})