Added CMake scripts for the Qt4 demo

Surface_mesher/demo/Surface_mesher/CMakeLists.txt

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+add_subdirectory(qt4-demo)

Surface_mesher/demo/Surface_mesher/qt4-demo/CMakeLists.txt

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+set ( prj Surface_mesher_Qt4_Demo )
+
+project ( ${prj} )
+
+set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
+
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_BINARY_DIR}/cmake/modules" )
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/modules"  )
+
+# QGLViwer needs Qt4 configured with QtOpenGL and QtXml support
+
+set( QT_USE_QTOPENGL TRUE )
+set( QT_USE_QTXML    TRUE )
+set(QT_USE_QTMAIN    TRUE )
+
+find_package(CGAL      REQUIRED )
+find_package(Qt4       REQUIRED )
+find_package(QGLViewer REQUIRED )
+
+if ( CGAL_FOUND AND QT_FOUND AND QGLVIEWER_FOUND )
+
+  include( ${QT_USE_FILE})
+  include(UseCGAL)
+  
+  # Make sure the compiler can find local include files
+  if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/include")
+    include_directories (BEFORE include)
+  endif()
+  
+  include_directories(BEFORE ${CMAKE_CURRENT_BINARY_DIR})
+  include_directories(BEFORE ${CMAKE_CURRENT_SOURCE_DIR})
+  
+  include_directories( ${QGLVIEWER_INCLUDE_DIR} )
+
+  set( sources surface_mesher.cpp viewer.cpp mainwindow.cpp polyhedral_surface.cpp )
+  
+  qt4_automoc( ${sources} )
+  
+  qt4_wrap_ui( uis mainwindow.ui optionsdialog.ui )
+    
+  qt4_add_resources( surface_mesher.qrc ) 
+
+  add_definitions ( -DCGAL_SURFACE_MESHER_POLYHEDRAL_SURFACE_USE_INTERSECTION_DATA_STRUCTURE )
+  
+  add_executable  ( ${prj}  ${sources} ${uis} )
+  
+  add_dependencies( ${prj} CGAL)
+    
+  # Link the executable to CGAL and third-party libraries
+  if ( NOT AUTO_LINK_ENABLED )    
+    target_link_libraries( ${prj} ${CGAL_LIBRARIES} ${CGAL_3RD_PARTY_LIBRARIES})
+  endif()
+  
+  target_link_libraries( ${prj} ${QT_LIBRARIES} ${QGLVIEWER_LIBRARIES} )
+  
+endif()