findqt4.cmake

Gaussian Mixture Algorithm

      $ENV{QTDIR}/bin
      )
    IF(QT_QMAKE_EXECUTABLE)
      EXEC_PROGRAM(${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" QT_VERSION_MAJOR "${QTVERSION}")
    STRING(REGEX REPLACE "^[0-9]+\\.([0-9])+\\.[0-9]+.*" "\\1" QT_VERSION_MINOR "${QTVERSION}")
    STRING(REGEX REPLACE "^[0-9]+\\.[0-9]+\\.([0-9]+).*" "\\1" QT_VERSION_PATCH "${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 + ${req_qt_patch_vers}")
    MATH(EXPR found_vers "${QT_VERSION_MAJOR}*10000 + ${QT_VERSION_MINOR}*100 + ${QT_VERSION_PATCH}")

    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( ${QT_QMAKE_EXECUTABLE}
      ARGS "-query QT_INSTALL_LIBS"
      OUTPUT_VARIABLE QT_LIBRARY_DIR_TMP )
    # make sure we have / and not \ as qmake gives on windows
    FILE(TO_CMAKE_PATH "${QT_LIBRARY_DIR_TMP}" 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 (QT_LIBRARY_DIR AND NOT QT_BINARY_DIR)
     EXEC_PROGRAM(${QT_QMAKE_EXECUTABLE}
       ARGS "-query QT_INSTALL_BINS"
       OUTPUT_VARIABLE qt_bins )
     # make sure we have / and not \ as qmake gives on windows
     FILE(TO_CMAKE_PATH "${qt_bins}" qt_bins)
     SET(QT_BINARY_DIR ${qt_bins} CACHE INTERNAL "")
  ENDIF (QT_LIBRARY_DIR AND NOT QT_BINARY_DIR)

  # ask qmake for the include dir
  IF (QT_LIBRARY_DIR AND NOT QT_HEADERS_DIR)
      EXEC_PROGRAM( ${QT_QMAKE_EXECUTABLE}
        ARGS "-query QT_INSTALL_HEADERS" 
        OUTPUT_VARIABLE qt_headers ) 
      # make sure we have / and not \ as qmake gives on windows
      FILE(TO_CMAKE_PATH "${qt_headers}" qt_headers)
      SET(QT_HEADERS_DIR ${qt_headers} CACHE INTERNAL "")
  ENDIF(QT_LIBRARY_DIR AND NOT QT_HEADERS_DIR)


  # ask qmake for the documentation directory
  IF (QT_LIBRARY_DIR AND NOT QT_DOC_DIR)
    EXEC_PROGRAM( ${QT_QMAKE_EXECUTABLE}
      ARGS "-query QT_INSTALL_DOCS"
      OUTPUT_VARIABLE qt_doc_dir )
    # make sure we have / and not \ as qmake gives on windows
    FILE(TO_CMAKE_PATH "${qt_doc_dir}" qt_doc_dir)
    SET(QT_DOC_DIR ${qt_doc_dir} CACHE PATH "The location of the Qt docs")
  ENDIF (QT_LIBRARY_DIR AND NOT QT_DOC_DIR)

  # ask qmake for the mkspecs directory
  IF (QT_LIBRARY_DIR AND NOT QT_MKSPECS_DIR)
    EXEC_PROGRAM( ${QT_QMAKE_EXECUTABLE}
      ARGS "-query QMAKE_MKSPECS"
      OUTPUT_VARIABLE qt_mkspecs_dirs )
    # do not replace : on windows as it might be a drive letter
    # and windows should already use ; as a separator
    IF(UNIX)
      STRING(REPLACE ":" ";" qt_mkspecs_dirs "${qt_mkspecs_dirs}")
    ENDIF(UNIX)
    FIND_PATH(QT_MKSPECS_DIR qconfig.pri PATHS ${qt_mkspecs_dirs}
      DOC "The location of the Qt mkspecs containing qconfig.pri"
      NO_DEFAULT_PATH )
  ENDIF (QT_LIBRARY_DIR AND NOT QT_MKSPECS_DIR)

  # ask qmake for the plugins directory
  IF (QT_LIBRARY_DIR AND NOT QT_PLUGINS_DIR)
    EXEC_PROGRAM( ${QT_QMAKE_EXECUTABLE}
      ARGS "-query QT_INSTALL_PLUGINS"
      OUTPUT_VARIABLE qt_plugins_dir )
    # make sure we have / and not \ as qmake gives on windows
    FILE(TO_CMAKE_PATH "${qt_plugins_dir}" qt_plugins_dir)
    SET(QT_PLUGINS_DIR ${qt_plugins_dir} CACHE PATH "The location of the Qt plugins")
  ENDIF (QT_LIBRARY_DIR AND NOT QT_PLUGINS_DIR)
  ########################################
  #
  #       Setting the INCLUDE-Variables
  #
  ########################################

  FIND_PATH(QT_QTCORE_INCLUDE_DIR QtGlobal
    PATHS
    ${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 ${QT_HEADERS_DIR})
    ELSE (QT_USE_FRAMEWORKS)
      STRING( REGEX REPLACE "/QtCore$" "" qt4_include_dir ${QT_QTCORE_INCLUDE_DIR})
      SET( QT_INCLUDE_DIR ${qt4_include_dir} CACHE PATH "")
    ENDIF (QT_USE_FRAMEWORKS)
  ENDIF( QT_QTCORE_INCLUDE_DIR AND NOT QT_INCLUDE_DIR)

  IF( NOT QT_INCLUDE_DIR)
    IF( NOT Qt4_FIND_QUIETLY AND Qt4_FIND_REQUIRED)
      MESSAGE( FATAL_ERROR "Could NOT find QtGlobal header")
    ENDIF( NOT Qt4_FIND_QUIETLY AND Qt4_FIND_REQUIRED)
  ENDIF( NOT QT_INCLUDE_DIR)

  #############################################
  #
  # Find out what window system we're using
  #
  #############################################
  # Save required variable
  SET(CMAKE_REQUIRED_INCLUDES_SAVE ${CMAKE_REQUIRED_INCLUDES})
  SET(CMAKE_REQUIRED_FLAGS_SAVE    ${CMAKE_REQUIRED_FLAGS})
  # Add QT_INCLUDE_DIR to CMAKE_REQUIRED_INCLUDES
  SET(CMAKE_REQUIRED_INCLUDES "${CMAKE_REQUIRED_INCLUDES};${QT_INCLUDE_DIR}")
  # On Mac OS X when Qt has framework support, also add the framework path
  IF( QT_USE_FRAMEWORKS )
    SET(CMAKE_REQUIRED_FLAGS "-F${QT_LIBRARY_DIR} ")
  ENDIF( QT_USE_FRAMEWORKS )
  # Check for Window system symbols (note: only one should end up being set)
  CHECK_SYMBOL_EXISTS(Q_WS_X11 "QtCore/qglobal.h" Q_WS_X11)
  CHECK_SYMBOL_EXISTS(Q_WS_WIN "QtCore/qglobal.h" Q_WS_WIN)
  CHECK_SYMBOL_EXISTS(Q_WS_QWS "QtCore/qglobal.h" Q_WS_QWS)
  CHECK_SYMBOL_EXISTS(Q_WS_MAC "QtCore/qglobal.h" Q_WS_MAC)

  IF (QT_QTCOPY_REQUIRED)
     CHECK_SYMBOL_EXISTS(QT_IS_QTCOPY "QtCore/qglobal.h" QT_KDE_QT_COPY)
     IF (NOT QT_IS_QTCOPY)
        MESSAGE(FATAL_ERROR "qt-copy is required, but hasn't been found")
     ENDIF (NOT QT_IS_QTCOPY)
  ENDIF (QT_QTCOPY_REQUIRED)

  # Restore CMAKE_REQUIRED_INCLUDES and CMAKE_REQUIRED_FLAGS variables
  SET(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES_SAVE})
  SET(CMAKE_REQUIRED_FLAGS    ${CMAKE_REQUIRED_FLAGS_SAVE})
  #
  #############################################

  IF (QT_USE_FRAMEWORKS)
    SET(QT_DEFINITIONS ${QT_DEFINITIONS} -F${QT_LIBRARY_DIR} -L${QT_LIBRARY_DIR} )
  ENDIF (QT_USE_FRAMEWORKS)

  # Set QT_QT3SUPPORT_INCLUDE_DIR
  FIND_PATH(QT_QT3SUPPORT_INCLUDE_DIR Qt3Support
    PATHS
    ${QT_INCLUDE_DIR}/Qt3Support
    ${QT_LIBRARY_DIR}/Qt3Support.framework/Headers
    NO_DEFAULT_PATH
    )

  # Set QT_QT_INCLUDE_DIR
  FIND_PATH(QT_QT_INCLUDE_DIR qglobal.h
    PATHS
    ${QT_INCLUDE_DIR}/Qt
    ${QT_LIBRARY_DIR}/QtCore.framework/Headers
    NO_DEFAULT_PATH
    )

  # Set QT_QTGUI_INCLUDE_DIR
  FIND_PATH(QT_QTGUI_INCLUDE_DIR QtGui
    PATHS
    ${QT_INCLUDE_DIR}/QtGui
    ${QT_LIBRARY_DIR}/QtGui.framework/Headers
    NO_DEFAULT_PATH
    )

  # Set QT_QTSVG_INCLUDE_DIR
  FIND_PATH(QT_QTSVG_INCLUDE_DIR QtSvg
    PATHS
    ${QT_INCLUDE_DIR}/QtSvg
    ${QT_LIBRARY_DIR}/QtSvg.framework/Headers
    NO_DEFAULT_PATH
    )

  # Set QT_QTSCRIPT_INCLUDE_DIR
  FIND_PATH(QT_QTSCRIPT_INCLUDE_DIR QtScript
    PATHS
    ${QT_INCLUDE_DIR}/QtScript
    ${QT_LIBRARY_DIR}/QtScript.framework/Headers
    NO_DEFAULT_PATH
    )

  # Set QT_QTTEST_INCLUDE_DIR
  FIND_PATH(QT_QTTEST_INCLUDE_DIR QtTest
    PATHS
    ${QT_INCLUDE_DIR}/QtTest
    ${QT_LIBRARY_DIR}/QtTest.framework/Headers
    NO_DEFAULT_PATH
    )

  # Set QT_QTUITOOLS_INCLUDE_DIR
  FIND_PATH(QT_QTUITOOLS_INCLUDE_DIR QtUiTools
    PATHS
    ${QT_INCLUDE_DIR}/QtUiTools
    ${QT_LIBRARY_DIR}/QtUiTools.framework/Headers
    NO_DEFAULT_PATH
    )

  # Set QT_QTMOTIF_INCLUDE_DIR
  IF(Q_WS_X11)
    FIND_PATH(QT_QTMOTIF_INCLUDE_DIR QtMotif 
      PATHS 
      ${QT_INCLUDE_DIR}/QtMotif 
      NO_DEFAULT_PATH )
  ENDIF(Q_WS_X11)

  # Set QT_QTNETWORK_INCLUDE_DIR
  FIND_PATH(QT_QTNETWORK_INCLUDE_DIR QtNetwork
    PATHS
    ${QT_INCLUDE_DIR}/QtNetwork
    ${QT_LIBRARY_DIR}/QtNetwork.framework/Headers
    NO_DEFAULT_PATH
    )

  # Set QT_QTNSPLUGIN_INCLUDE_DIR
  FIND_PATH(QT_QTNSPLUGIN_INCLUDE_DIR QtNsPlugin
    PATHS
    ${QT_INCLUDE_DIR}/QtNsPlugin
    ${QT_LIBRARY_DIR}/QtNsPlugin.framework/Headers
    NO_DEFAULT_PATH
    )

  # Set QT_QTOPENGL_INCLUDE_DIR
  FIND_PATH(QT_QTOPENGL_INCLUDE_DIR QtOpenGL
    PATHS
    ${QT_INCLUDE_DIR}/QtOpenGL
    ${QT_LIBRARY_DIR}/QtOpenGL.framework/Headers
    NO_DEFAULT_PATH
    )

  # Set QT_QTSQL_INCLUDE_DIR
  FIND_PATH(QT_QTSQL_INCLUDE_DIR QtSql
    PATHS
    ${QT_INCLUDE_DIR}/QtSql
    ${QT_LIBRARY_DIR}/QtSql.framework/Headers
    NO_DEFAULT_PATH
    )

  # Set QT_QTXML_INCLUDE_DIR
  FIND_PATH(QT_QTXML_INCLUDE_DIR QtXml
    PATHS
    ${QT_INCLUDE_DIR}/QtXml
    ${QT_LIBRARY_DIR}/QtXml.framework/Headers
    NO_DEFAULT_PATH
    )

  # Set QT_QTASSISTANT_INCLUDE_DIR
  FIND_PATH(QT_QTASSISTANT_INCLUDE_DIR QtAssistant
    PATHS
    ${QT_INCLUDE_DIR}/QtAssistant
    ${QT_LIBRARY_DIR}/QtAssistant.framework/Headers
    NO_DEFAULT_PATH
    )

  # Set QT_QTDESIGNER_INCLUDE_DIR
  FIND_PATH(QT_QTDESIGNER_INCLUDE_DIR QDesignerComponents