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#=============================================================================
# CMake - Cross Platform Makefile Generator
# Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================

project(QtDialog)
if(POLICY CMP0020)
  cmake_policy(SET CMP0020 NEW) # Drop when CMake >= 2.8.11 required
endif()
CMake_OPTIONAL_COMPONENT(cmake-gui)
find_package(Qt5Widgets QUIET)
if (Qt5Widgets_FOUND)
  include_directories(${Qt5Widgets_INCLUDE_DIRS})
  add_definitions(${Qt5Widgets_DEFINITONS})
  macro(qt4_wrap_ui)
    qt5_wrap_ui(${ARGN})
  endmacro()
  macro(qt4_wrap_cpp)
    qt5_wrap_cpp(${ARGN})
  endmacro()
  macro(qt4_add_resources)
    qt5_add_resources(${ARGN})
  endmacro()
  set(CMake_QT_LIBRARIES ${Qt5Widgets_LIBRARIES})
  set(QT_QTMAIN_LIBRARY ${Qt5Core_QTMAIN_LIBRARIES})

  # Remove this when the minimum version of Qt is 4.6.
  add_definitions(-DQT_DISABLE_DEPRECATED_BEFORE=0)

  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${Qt5Widgets_EXECUTABLE_COMPILE_FLAGS}")

  # We need to install platform plugin and add qt.conf for Qt5 on Mac and Windows.
  # FIXME: This should be part of Qt5 CMake scripts, but unfortunatelly
  # Qt5 support is missing there.
  if(APPLE OR WIN32)
    macro(install_qt5_plugin _qt_plugin_name _qt_plugins_var)
      get_target_property(_qt_plugin_path "${_qt_plugin_name}" LOCATION)
      if(EXISTS "${_qt_plugin_path}")
        get_filename_component(_qt_plugin_file "${_qt_plugin_path}" NAME)
        get_filename_component(_qt_plugin_type "${_qt_plugin_path}" PATH)
        get_filename_component(_qt_plugin_type "${_qt_plugin_type}" NAME)
        if(APPLE)
          set(_qt_plugin_dir "PlugIns")
        elseif(WIN32)
          set(_qt_plugin_dir "plugins")
        endif()
        set(_qt_plugin_dest "${_qt_plugin_dir}/${_qt_plugin_type}")
        install(FILES "${_qt_plugin_path}"
          DESTINATION "${_qt_plugin_dest}"
          ${COMPONENT})
        set(${_qt_plugins_var}
          "${${_qt_plugins_var}};\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/${_qt_plugin_dest}/${_qt_plugin_file}")
      else()
        message(FATAL_ERROR "QT plugin ${_qt_plugin_name} not found")
      endif()
    endmacro()
    if(APPLE)
      install_qt5_plugin("Qt5::QCocoaIntegrationPlugin" QT_PLUGINS)
      file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/qt.conf"
        "[Paths]\nPlugins = ${_qt_plugin_dir}\n")
      install(FILES "${CMAKE_CURRENT_BINARY_DIR}/qt.conf"
        DESTINATION "${CMAKE_INSTALL_PREFIX}/Resources"
        ${COMPONENT})
    elseif(WIN32)
      install_qt5_plugin("Qt5::QWindowsIntegrationPlugin" QT_PLUGINS)
      file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/qt.conf"
        "[Paths]\nPlugins = ../${_qt_plugin_dir}\n")
      install(FILES "${CMAKE_CURRENT_BINARY_DIR}/qt.conf"
        DESTINATION bin
        ${COMPONENT})
    endif()
  endif()

  if(WIN32 AND TARGET Qt5::Core)
    get_property(_Qt5_Core_LOCATION TARGET Qt5::Core PROPERTY LOCATION)
    get_filename_component(Qt_BIN_DIR "${_Qt5_Core_LOCATION}" PATH)
  endif()
else()
  set(QT_MIN_VERSION "4.4.0")
  find_package(Qt4 REQUIRED)
  if(NOT QT4_FOUND)
    message(SEND_ERROR "Failed to find Qt 4.4 or greater.")
    return()
  endif()

  include(${QT_USE_FILE})

  set(CMake_QT_LIBRARIES ${QT_LIBRARIES})

  if(WIN32 AND EXISTS "${QT_QMAKE_EXECUTABLE}")
    get_filename_component(_Qt_BIN_DIR "${QT_QMAKE_EXECUTABLE}" PATH)
    if(EXISTS "${_Qt_BIN_DIR}/QtCore4.dll")
      set(Qt_BIN_DIR ${_Qt_BIN_DIR})
    endif()
  endif()
endif()

set(SRCS
  AddCacheEntry.cxx
  AddCacheEntry.h
  CMakeSetup.cxx
  CMakeSetupDialog.cxx
  CMakeSetupDialog.h
  FirstConfigure.cxx
  FirstConfigure.h
  QCMake.cxx
  QCMake.h
  QCMakeCacheView.cxx
  QCMakeCacheView.h
  QCMakeWidgets.cxx
  QCMakeWidgets.h
  )
QT4_WRAP_UI(UI_SRCS
  CMakeSetupDialog.ui
  Compilers.ui
  CrossCompiler.ui
  AddCacheEntry.ui
  )
QT4_WRAP_CPP(MOC_SRCS
  AddCacheEntry.h
  Compilers.h
  CMakeSetupDialog.h
  FirstConfigure.h
  QCMake.h
  QCMakeCacheView.h
  QCMakeWidgets.h
  )
QT4_ADD_RESOURCES(RC_SRCS CMakeSetup.qrc)

set(SRCS ${SRCS} ${UI_SRCS} ${MOC_SRCS} ${RC_SRCS})
if(WIN32)
  set(SRCS ${SRCS} CMakeSetup.rc)
endif()
if(APPLE)
  set(SRCS ${SRCS} CMakeSetup.icns)
  set(MACOSX_BUNDLE_ICON_FILE CMakeSetup.icns)
  set_source_files_properties(CMakeSetup.icns PROPERTIES
    MACOSX_PACKAGE_LOCATION Resources)
endif()

if(CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL)
  install(FILES ${CMake_SOURCE_DIR}/Licenses/LGPLv2.1.txt
    DESTINATION ${CMAKE_DATA_DIR}/Licenses
    ${COMPONENT})
  set_property(SOURCE CMakeSetupDialog.cxx
    PROPERTY COMPILE_DEFINITIONS CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL)
endif()

set(CMAKE_INCLUDE_CURRENT_DIR ON)

add_executable(cmake-gui WIN32 MACOSX_BUNDLE ${SRCS})
target_link_libraries(cmake-gui CMakeLib ${QT_QTMAIN_LIBRARY} ${CMake_QT_LIBRARIES})
if(Qt_BIN_DIR)
  set_property(TARGET cmake-gui PROPERTY Qt_BIN_DIR ${Qt_BIN_DIR})
endif()

if(APPLE)
  file(STRINGS "${CMake_SOURCE_DIR}/Copyright.txt" copyright_line
    LIMIT_COUNT 1 REGEX "^Copyright 2000-20[0-9][0-9] Kitware")

  set_target_properties(cmake-gui PROPERTIES
    OUTPUT_NAME CMake
    MACOSX_BUNDLE_INFO_PLIST "${CMAKE_CURRENT_SOURCE_DIR}/Info.plist.in"
    MACOSX_BUNDLE_SHORT_VERSION_STRING "${CMAKE_BUNDLE_VERSION}"
    # TBD: MACOSX_BUNDLE_BUNDLE_VERSION "${CMAKE_BUNDLE_VERSION}"
    MACOSX_BUNDLE_COPYRIGHT "${copyright_line}"
    )

  # Create a symlink in the build tree to provide a "cmake-gui" next
  # to the "cmake" executable that refers to the application bundle.
  add_custom_command(TARGET cmake-gui POST_BUILD
    COMMAND ln -sf CMake.app/Contents/MacOS/CMake
                   $<TARGET_FILE_DIR:cmake>/cmake-gui
    )
endif()
set(CMAKE_INSTALL_DESTINATION_ARGS
  BUNDLE DESTINATION "${CMAKE_BUNDLE_LOCATION}" ${COMPONENT})

install(TARGETS cmake-gui
  RUNTIME DESTINATION bin ${COMPONENT}
  ${CMAKE_INSTALL_DESTINATION_ARGS})

if(UNIX AND NOT APPLE)
  foreach (size IN ITEMS 32 128)
    install(
      FILES       "${CMAKE_CURRENT_SOURCE_DIR}/CMakeSetup${size}.png"
      DESTINATION "share/icons/hicolor/${size}x${size}/apps"
      ${COMPONENT}
      RENAME      "CMakeSetup.png")
  endforeach ()

  # install a desktop file so CMake appears in the application start menu
  # with an icon
  install(FILES CMake.desktop
    DESTINATION share/applications
    ${COMPONENT})
  install(FILES cmakecache.xml
    DESTINATION share/mime/packages
    ${COMPONENT})
endif()

if(APPLE)
  install(CODE "
    execute_process(COMMAND ln -s \"../MacOS/CMake\" cmake-gui
        WORKING_DIRECTORY \$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/bin)
  " ${COMPONENT})
endif()

if(APPLE OR WIN32)
  # install rules for including 3rd party libs such as Qt
  # if a system Qt is used (e.g. installed in /usr/lib/), it will not be included in the installation
  set(fixup_exe "\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/bin/cmake-gui${CMAKE_EXECUTABLE_SUFFIX}")
  if(APPLE)
    set(fixup_exe "\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/MacOS/CMake")
  endif()
  install(CODE "
    include(\"${CMake_SOURCE_DIR}/Modules/BundleUtilities.cmake\")
    set(BU_CHMOD_BUNDLE_ITEMS ON)
    fixup_bundle(\"${fixup_exe}\" \"${QT_PLUGINS}\" \"${QT_LIBRARY_DIR};${QT_BINARY_DIR}\")
  " ${COMPONENT})
endif()

set(CMAKE_PACKAGE_QTGUI TRUE)
configure_file("${QtDialog_SOURCE_DIR}/QtDialogCPack.cmake.in"
  "${QtDialog_BINARY_DIR}/QtDialogCPack.cmake" @ONLY)