Add a return-after-error if an old Qt is found.

No need for an else after a return.

Source/QtDialog/CMakeLists.txt

@@ -15,11 +15,12 @@ find_package(Qt4 REQUIRED)
 
 if(NOT QT4_FOUND)
   message(SEND_ERROR "Failed to find Qt 4.4 or greater.")
-else()
+  return()
+endif()
 
-  include(${QT_USE_FILE})
-  set(CMAKE_PACKAGE_QTGUI TRUE)
-  set(SRCS
+include(${QT_USE_FILE})
+set(CMAKE_PACKAGE_QTGUI TRUE)
+set(SRCS
   AddCacheEntry.cxx
   AddCacheEntry.h
   CMakeSetup.cxx
@@ -36,14 +37,14 @@ else()
   QMacInstallDialog.cxx
   QMacInstallDialog.h
   )
-  QT4_WRAP_UI(UI_SRCS
+QT4_WRAP_UI(UI_SRCS
   CMakeSetupDialog.ui
   Compilers.ui
   CrossCompiler.ui
   AddCacheEntry.ui
   MacInstallDialog.ui
   )
-  QT4_WRAP_CPP(MOC_SRCS
+QT4_WRAP_CPP(MOC_SRCS
   AddCacheEntry.h
   Compilers.h
   CMakeSetupDialog.h
@@ -53,44 +54,44 @@ else()
   QCMakeWidgets.h
   QMacInstallDialog.h
   )
-  QT4_ADD_RESOURCES(RC_SRCS CMakeSetup.qrc)
+QT4_ADD_RESOURCES(RC_SRCS CMakeSetup.qrc)
 
-  set(SRCS ${SRCS} ${UI_SRCS} ${MOC_SRCS} ${RC_SRCS})
-  if(Q_WS_WIN)
+set(SRCS ${SRCS} ${UI_SRCS} ${MOC_SRCS} ${RC_SRCS})
+if(Q_WS_WIN)
   set(SRCS ${SRCS} CMakeSetup.rc)
-  endif()
-  if(Q_WS_MAC)
+endif()
+if(Q_WS_MAC)
   set(SRCS ${SRCS} CMakeSetup.icns)
   set(MACOSX_BUNDLE_ICON_FILE CMakeSetup.icns)
   set_source_files_properties(CMakeSetup.icns PROPERTIES
     MACOSX_PACKAGE_LOCATION Resources)
-  endif()
+endif()
 
-  include_directories(${CMAKE_CURRENT_BINARY_DIR})
-  include_directories(${CMAKE_CURRENT_SOURCE_DIR})
+include_directories(${CMAKE_CURRENT_BINARY_DIR})
+include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 
-  add_executable(cmake-gui WIN32 MACOSX_BUNDLE ${SRCS})
-  target_link_libraries(cmake-gui CMakeLib ${QT_QTMAIN_LIBRARY} ${QT_LIBRARIES})
-  if(${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 2.4)
+add_executable(cmake-gui WIN32 MACOSX_BUNDLE ${SRCS})
+target_link_libraries(cmake-gui CMakeLib ${QT_QTMAIN_LIBRARY} ${QT_LIBRARIES})
+if(${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 2.4)
   if(APPLE)
     set_target_properties(cmake-gui PROPERTIES
       OUTPUT_NAME ${CMAKE_BUNDLE_NAME})
   endif()
   set(CMAKE_INSTALL_DESTINATION_ARGS
     BUNDLE DESTINATION "${CMAKE_BUNDLE_LOCATION}")
-  endif()
+endif()
 
-  install(TARGETS cmake-gui RUNTIME DESTINATION bin ${CMAKE_INSTALL_DESTINATION_ARGS})
+install(TARGETS cmake-gui RUNTIME DESTINATION bin ${CMAKE_INSTALL_DESTINATION_ARGS})
 
-  if(UNIX)
+if(UNIX)
   # install a desktop file so CMake appears in the application start menu
   # with an icon
   install(FILES CMake.desktop DESTINATION share/applications )
   install(FILES CMakeSetup32.png DESTINATION share/pixmaps )
   install(FILES cmakecache.xml DESTINATION share/mime/packages )
-  endif()
+endif()
 
-  if(APPLE)
+if(APPLE)
   set(CMAKE_POSTFLIGHT_SCRIPT
     "${CMake_BINARY_DIR}/Source/QtDialog/postflight.sh")
   set(CMAKE_POSTUPGRADE_SCRIPT
@@ -101,9 +102,9 @@ else()
     "${CMake_BINARY_DIR}/Source/QtDialog/postupgrade.sh")
   install(CODE "execute_process(COMMAND ln -s \"../MacOS/${CMAKE_BUNDLE_NAME}\" cmake-gui
                 WORKING_DIRECTORY \$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/bin)")
-  endif()
+endif()
 
-  if(APPLE OR WIN32)
+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${CMAKE_EXECUTABLE_SUFFIX}")
@@ -115,9 +116,7 @@ else()
     set(BU_CHMOD_BUNDLE_ITEMS ON)
     fixup_bundle(\"${fixup_exe}\" \"\" \"${QT_LIBRARY_DIR};${QT_BINARY_DIR}\")
   ")
-  endif()
-
-  configure_file("${QtDialog_SOURCE_DIR}/QtDialogCPack.cmake.in"
-    "${QtDialog_BINARY_DIR}/QtDialogCPack.cmake" @ONLY)
 endif()
 
+configure_file("${QtDialog_SOURCE_DIR}/QtDialogCPack.cmake.in"
+  "${QtDialog_BINARY_DIR}/QtDialogCPack.cmake" @ONLY)