Modules/FindQt.cmake

   1 # - Searches for all installed versions of Qt.
   2 # This should only be used if your project can work with multiple
   3 # versions of Qt.  If not, you should just directly use FindQt4 or FindQt3.
   4 # If multiple versions of Qt are found on the machine, then
   5 # The user must set the option DESIRED_QT_VERSION to the version
   6 # they want to use.  If only one version of qt is found on the machine,
   7 # then the DESIRED_QT_VERSION is set to that version and the
   8 # matching FindQt3 or FindQt4 module is included.
   9 # Once the user sets DESIRED_QT_VERSION, then the FindQt3 or FindQt4 module
  10 # is included.
  11 #
  12 #  QT_REQUIRED if this is set to TRUE then if CMake can
  13 #              not find Qt4 or Qt3 an error is raised
  14 #              and a message is sent to the user.
  15 #
  16 #  DESIRED_QT_VERSION OPTION is created
  17 #  QT4_INSTALLED is set to TRUE if qt4 is found.
  18 #  QT3_INSTALLED is set to TRUE if qt3 is found.
  19
  20 #=============================================================================
  21 # Copyright 2001-2009 Kitware, Inc.
  22 #
  23 # Distributed under the OSI-approved BSD License (the "License");
  24 # see accompanying file Copyright.txt for details.
  25 #
  26 # This software is distributed WITHOUT ANY WARRANTY; without even the
  27 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  28 # See the License for more information.
  29 #=============================================================================
  30 # (To distribute this file outside of CMake, substitute the full
  31 #  License text for the above reference.)
  32
  33 # look for signs of qt3 installations
  34 file(GLOB GLOB_TEMP_VAR /usr/lib*/qt-3*/bin/qmake /usr/lib*/qt3*/bin/qmake)
  35 if(GLOB_TEMP_VAR)
  36   set(QT3_INSTALLED TRUE)
  37 endif()
  38 set(GLOB_TEMP_VAR)
  39
  40 file(GLOB GLOB_TEMP_VAR /usr/local/qt-x11-commercial-3*/bin/qmake)
  41 if(GLOB_TEMP_VAR)
  42   set(QT3_INSTALLED TRUE)
  43 endif()
  44 set(GLOB_TEMP_VAR)
  45
  46 file(GLOB GLOB_TEMP_VAR /usr/local/lib/qt3/bin/qmake)
  47 if(GLOB_TEMP_VAR)
  48   set(QT3_INSTALLED TRUE)
  49 endif()
  50 set(GLOB_TEMP_VAR)
  51
  52 # look for qt4 installations
  53 file(GLOB GLOB_TEMP_VAR /usr/local/qt-x11-commercial-4*/bin/qmake)
  54 if(GLOB_TEMP_VAR)
  55   set(QT4_INSTALLED TRUE)
  56 endif()
  57 set(GLOB_TEMP_VAR)
  58
  59 file(GLOB GLOB_TEMP_VAR /usr/local/Trolltech/Qt-4*/bin/qmake)
  60 if(GLOB_TEMP_VAR)
  61   set(QT4_INSTALLED TRUE)
  62 endif()
  63 set(GLOB_TEMP_VAR)
  64
  65 file(GLOB GLOB_TEMP_VAR /usr/local/lib/qt4/bin/qmake)
  66 if(GLOB_TEMP_VAR)
  67   set(QT4_INSTALLED TRUE)
  68 endif()
  69 set(GLOB_TEMP_VAR)
  70
  71 if (Qt_FIND_VERSION)
  72   set(DESIRED_QT_VERSION "${Qt_FIND_VERSION}")
  73 endif ()
  74
  75 # now find qmake
  76 find_program(QT_QMAKE_EXECUTABLE_FINDQT NAMES qmake PATHS "${QT_SEARCH_PATH}/bin" "$ENV{QTDIR}/bin")
  77 if(QT_QMAKE_EXECUTABLE_FINDQT)
  78   exec_program(${QT_QMAKE_EXECUTABLE_FINDQT} ARGS "-query QT_VERSION"
  79     OUTPUT_VARIABLE QTVERSION)
  80   if(QTVERSION MATCHES "4.*")
  81     set(QT_QMAKE_EXECUTABLE ${QT_QMAKE_EXECUTABLE_FINDQT} CACHE PATH "Qt4 qmake program.")
  82     set(QT4_INSTALLED TRUE)
  83   endif()
  84   if(QTVERSION MATCHES "Unknown")
  85     set(QT3_INSTALLED TRUE)
  86   endif()
  87 endif()
  88
  89 if(QT_QMAKE_EXECUTABLE_FINDQT)
  90   exec_program( ${QT_QMAKE_EXECUTABLE_FINDQT}
  91     ARGS "-query QT_INSTALL_HEADERS"
  92     OUTPUT_VARIABLE qt_headers )
  93 endif()
  94
  95 find_file( QT4_QGLOBAL_H_FILE qglobal.h
  96   "${QT_SEARCH_PATH}/Qt/include"
  97   "[HKEY_CURRENT_USER\\Software\\Trolltech\\Qt3Versions\\4.0.0;InstallDir]/include/Qt"
  98   "[HKEY_CURRENT_USER\\Software\\Trolltech\\Versions\\4.0.0;InstallDir]/include/Qt"
  99   ${qt_headers}/Qt
 100   $ENV{QTDIR}/include/Qt
 101   /usr/local/qt/include/Qt
 102   /usr/local/include/Qt
 103   /usr/lib/qt/include/Qt
 104   /usr/include/Qt
 105   /usr/share/qt4/include/Qt
 106   /usr/local/include/X11/qt4/Qt
 107   C:/Progra~1/qt/include/Qt )
 108
 109 if(QT4_QGLOBAL_H_FILE)
 110   set(QT4_INSTALLED TRUE)
 111 endif()
 112
 113 find_file( QT3_QGLOBAL_H_FILE qglobal.h
 114   "${QT_SEARCH_PATH}/Qt/include"
 115  "[HKEY_CURRENT_USER\\Software\\Trolltech\\Qt3Versions\\3.2.1;InstallDir]/include/Qt"
 116   "[HKEY_CURRENT_USER\\Software\\Trolltech\\Qt3Versions\\3.2.0;InstallDir]/include/Qt"
 117   "[HKEY_CURRENT_USER\\Software\\Trolltech\\Qt3Versions\\3.1.0;InstallDir]/include/Qt"
 118   C:/Qt/3.3.3Educational/include
 119   $ENV{QTDIR}/include
 120   /usr/include/qt3/Qt
 121   /usr/local/qt/include
 122   /usr/local/include
 123   /usr/lib/qt/include
 124   /usr/include
 125   /usr/share/qt3/include
 126   /usr/local/include/X11/qt3
 127   C:/Progra~1/qt/include
 128   /usr/include/qt3 )
 129
 130 if(QT3_QGLOBAL_H_FILE)
 131   set(QT3_INSTALLED TRUE)
 132 endif()
 133
 134 if(QT3_INSTALLED AND QT4_INSTALLED AND NOT DESIRED_QT_VERSION)
 135   # force user to pick if we have both
 136   set(DESIRED_QT_VERSION 0 CACHE STRING "Pick a version of Qt to use: 3 or 4")
 137 else()
 138   # if only one found then pick that one
 139   if(QT3_INSTALLED AND NOT DESIRED_QT_VERSION EQUAL 4)
 140     set(DESIRED_QT_VERSION 3 CACHE STRING "Pick a version of Qt to use: 3 or 4")
 141   endif()
 142   if(QT4_INSTALLED AND NOT DESIRED_QT_VERSION EQUAL 3)
 143     set(DESIRED_QT_VERSION 4 CACHE STRING "Pick a version of Qt to use: 3 or 4")
 144   endif()
 145 endif()
 146
 147 if(DESIRED_QT_VERSION MATCHES 3)
 148   set(Qt3_FIND_REQUIRED ${Qt_FIND_REQUIRED})
 149   set(Qt3_FIND_QUIETLY  ${Qt_FIND_QUIETLY})
 150   include(${CMAKE_CURRENT_LIST_DIR}/FindQt3.cmake)
 151 endif()
 152 if(DESIRED_QT_VERSION MATCHES 4)
 153   set(Qt4_FIND_REQUIRED ${Qt_FIND_REQUIRED})
 154   set(Qt4_FIND_QUIETLY  ${Qt_FIND_QUIETLY})
 155   include(${CMAKE_CURRENT_LIST_DIR}/FindQt4.cmake)
 156 endif()
 157
 158 if(NOT QT3_INSTALLED AND NOT QT4_INSTALLED)
 159   if(QT_REQUIRED)
 160     message(SEND_ERROR "CMake was unable to find any Qt versions, put qmake in your path, or set QT_QMAKE_EXECUTABLE.")
 161   endif()
 162 else()
 163   if(NOT QT_FOUND AND NOT DESIRED_QT_VERSION)
 164     if(QT_REQUIRED)
 165       message(SEND_ERROR "Multiple versions of Qt found please set DESIRED_QT_VERSION")
 166     else()
 167       message("Multiple versions of Qt found please set DESIRED_QT_VERSION")
 168     endif()
 169   endif()
 170   if(NOT QT_FOUND AND DESIRED_QT_VERSION)
 171     if(QT_REQUIRED)
 172       message(FATAL_ERROR "CMake was unable to find Qt version: ${DESIRED_QT_VERSION}. Set advanced values QT_QMAKE_EXECUTABLE and QT${DESIRED_QT_VERSION}_QGLOBAL_FILE, if those are set then QT_QT_LIBRARY or QT_LIBRARY_DIR.")
 173     else()
 174       message( "CMake was unable to find desired Qt version: ${DESIRED_QT_VERSION}. Set advanced values QT_QMAKE_EXECUTABLE and QT${DESIRED_QT_VERSION}_QGLOBAL_FILE.")
 175     endif()
 176   endif()
 177 endif()
 178 mark_as_advanced(QT3_QGLOBAL_H_FILE QT4_QGLOBAL_H_FILE QT_QMAKE_EXECUTABLE_FINDQT)