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@@ -1,4 +1,125 @@
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+# searches for all installed versions of QT.
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+# This should only be used if your project can work with multiple
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+# versions of QT. If not, you should just directly use FindQt4 or FindQt3.
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#
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-MESSAGE("FindQt has been deprecated, Defaulting to FindQt3. You should use FindQt3 FindQt4.cmake and CheckQtInstalled.cmake directly.")
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-INCLUDE(FindQt3)
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+# If multiple versions of QT are found on the machine, then
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+# The user must set the option DESIRED_QT_VERSION to the version
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+# they want to use. If only one version of qt is found on the machine,
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+# then the DESIRED_QT_VERSION is set to that version and the
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+# matching FindQt3 or FindQt4 module is included.
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+# Once the user sets DESIRED_QT_VERSION, then the FindQt3 or FindQt4 module
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+# is included.
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+#
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+# DESIRED_QT_VERSION OPTION is created
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+# QT4_INSTALLED is set to TRUE if qt4 is found.
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+# QT3_INSTALLED is set to TRUE if qt3 is found.
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+# look for signs of qt3 installations
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+FILE(GLOB GLOB_TEMP_VAR /usr/lib/qt-3*/bin/qmake)
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+IF(GLOB_TEMP_VAR)
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+ SET(QT3_INSTALLED TRUE)
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+ENDIF(GLOB_TEMP_VAR)
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+SET(GLOB_TEMP_VAR)
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+
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+FILE(GLOB GLOB_TEMP_VAR /usr/local/qt-x11-commercial-3*/bin/qmake)
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+IF(GLOB_TEMP_VAR)
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+ SET(QT3_INSTALLED TRUE)
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+ENDIF(GLOB_TEMP_VAR)
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+SET(GLOB_TEMP_VAR)
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+
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+# look for qt4 installations
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+FILE(GLOB GLOB_TEMP_VAR /usr/local/qt-x11-commercial-4*/bin/qmake)
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+IF(GLOB_TEMP_VAR)
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+ SET(QT4_INSTALLED TRUE)
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+ENDIF(GLOB_TEMP_VAR)
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+SET(GLOB_TEMP_VAR)
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+
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+FILE(GLOB GLOB_TEMP_VAR /usr/local/Trolltech/Qt-4*/bin/qmake)
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+IF(GLOB_TEMP_VAR)
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+ SET(QT4_INSTALLED TRUE)
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+ENDIF(GLOB_TEMP_VAR)
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+SET(GLOB_TEMP_VAR)
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+
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+# now find qmake
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+FIND_PROGRAM(QT_QMAKE_EXECUTABLE NAMES qmake PATHS $ENV{QTDIR}/bin)
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+IF(QT_QMAKE_EXECUTABLE)
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+ EXEC_PROGRAM(${QMAKE_PATH} ARGS "-query QT_VERSION"
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+ OUTPUT_VARIABLE QTVERSION)
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+ IF(QTVERSION MATCHES "4.*")
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+ SET(QT4_INSTALLED TRUE)
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+ ENDIF(QTVERSION MATCHES "4.*")
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+ IF(QTVERSION MATCHES "Unknown")
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+ SET(QT3_INSTALLED TRUE)
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+ ENDIF(QTVERSION MATCHES "Unknown")
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+ENDIF(QT_QMAKE_EXECUTABLE)
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+
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+IF(QT_QMAKE_EXECUTABLE)
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+ EXEC_PROGRAM( ${QT_QMAKE_EXECUTABLE}
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+ ARGS "-query QT_INSTALL_HEADERS"
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+ OUTPUT_VARIABLE qt_headers )
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+ENDIF(QT_QMAKE_EXECUTABLE)
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+
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+FIND_FILE( QT4_QGLOBAL_H_FILE qglobal.h
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+ "[HKEY_CURRENT_USER\Software\Trolltech\Qt3Versions\4.0.0;InstallDir]/include/Qt"
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+ ${qt_headers}/Qt
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+ $ENV{QTDIR}/include/Qt
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+ /usr/local/qt/include/Qt
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+ /usr/local/include/Qt
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+ /usr/lib/qt/include/Qt
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+ /usr/include/Qt
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+ /usr/share/qt4/include/Qt
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+ C:/Progra~1/qt/include/Qt )F
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+
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+IF(QT4_QGLOBAL_H_FILE)
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+ SET(QT4_INSTALLED TRUE)
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+ENDIF(QT4_QGLOBAL_H_FILE)
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+
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+FIND_FILE( QT3_QGLOBAL_H_FILE qglobal.h
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+ "[HKEY_CURRENT_USER\Software\Trolltech\Qt3Versions\3.2.1;InstallDir]/include/Qt"
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+ "[HKEY_CURRENT_USER\Software\Trolltech\Qt3Versions\3.2.0;InstallDir]/include/Qt"
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+ "[HKEY_CURRENT_USER\Software\Trolltech\Qt3Versions\3.1.0;InstallDir]/include/Qt"
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+ C:/Qt/3.3.3Educational/include
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+ $ENV{QTDIR}/include
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+ /usr/include/qt3/Qt
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+ /usr/local/qt/include
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+ /usr/local/include
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+ /usr/lib/qt/include
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+ /usr/include
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+ /usr/share/qt3/include
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+ C:/Progra~1/qt/include
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+ /usr/include/qt3 )
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+
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+IF(QT3_QGLOBAL_H_FILE)
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+ SET(QT3_INSTALLED TRUE)
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+ENDIF(QT3_QGLOBAL_H_FILE)
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+
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+IF(QT3_INSTALLED AND QT4_INSTALLED )
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+ # force user to pick if we have both
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+ OPTION(DESIRED_QT_VERSION "Pick a version of QT to use" 0)
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+ELSE(QT3_INSTALLED AND QT4_INSTALLED )
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+ # if only one found then pick that one
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+ IF(QT3_INSTALLED)
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+ OPTION(DESIRED_QT_VERSION "Pick a version of QT to use" 3)
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+ ENDIF(QT3_INSTALLED)
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+ IF(QT4_INSTALLED)
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+ OPTION(DESIRED_QT_VERSION "Pick a version of QT to use" 4)
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+ ENDIF(QT4_INSTALLED)
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+ENDIF(QT3_INSTALLED AND QT4_INSTALLED )
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+
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+IF(DESIRED_QT_VERSION MATCHES 3)
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+ INCLUDE(FindQt3)
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+ENDIF(DESIRED_QT_VERSION MATCHES 3)
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+IF(DESIRED_QT_VERSION MATCHES 4)
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+ INCLUDE(FindQt4)
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+ENDIF(DESIRED_QT_VERSION MATCHES 4)
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+
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+IF(NOT QT3_INSTALLED AND NOT QT4_INSTALLED)
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+ MESSAGE(SEND_ERROR "CMake was unable to find any QT versions, put qmake in your path, or set QT_QMAKE_EXECUTABLE.")
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+ELSE(NOT QT3_INSTALLED AND NOT QT4_INSTALLED)
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+ IF(NOT QT_FOUND AND NOT DESIRED_QT_VERSION)
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+ MESSAGE(SEND_ERROR "Multiple versions of QT found please set DESIRED_QT_VERSION")
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+ ENDIF(NOT QT_FOUND AND NOT DESIRED_QT_VERSION)
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+ IF(NOT QT_FOUND AND DESIRED_QT_VERSION)
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+ MESSAGE(SEND_ERROR "CMake was unable to find QT version: ${DESIRED_QT_VERSION}")
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+ ENDIF(NOT QT_FOUND AND DESIRED_QT_VERSION)
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+ENDIF(NOT QT3_INSTALLED AND NOT QT4_INSTALLED)
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Bill Hoffman