find_package(Qt5
             COMPONENTS Core
                        Xml
                        OpenGL
                        Gui
                        Widgets)
if(NOT Qt5_FOUND)
    message("Qt5 not found. Install it and set Qt5_DIR accordingly")
    if(WIN32)
        message("  In Windows, Qt5_DIR should be something like C:/Qt/5.4/msvc2013_64_opengl/lib/cmake/Qt5")
    endif()
endif()

find_path(QGLVIEWER_INCLUDE_DIR
          qglviewer.h
          /usr/include/QGLViewer
          /opt/local/include/QGLViewer
          /usr/local/include/QGLViewer
          /sw/include/QGLViewer
          ENV
          QGLVIEWERROOT)

find_library(QGLVIEWER_LIBRARY_RELEASE
             NAMES qglviewer
                   QGLViewer
                   qglviewer-qt5
                   QGLViewer-qt5
             PATHS /usr/lib
                   /usr/local/lib
                   /opt/local/lib
                   /sw/lib
                   ENV
                   QGLVIEWERROOT
                   ENV
                   LD_LIBRARY_PATH
                   ENV
                   LIBRARY_PATH
             PATH_SUFFIXES QGLViewer QGLViewer/release)
find_library(QGLVIEWER_LIBRARY_DEBUG
             NAMES dqglviewer
                   dQGLViewer
                   dqglviewer-qt5
                   dQGLViewer-qt5
                   QGLViewerd2
             PATHS /usr/lib
                   /usr/local/lib
                   /opt/local/lib
                   /sw/lib
                   ENV
                   QGLVIEWERROOT
                   ENV
                   LD_LIBRARY_PATH
                   ENV
                   LIBRARY_PATH
             PATH_SUFFIXES QGLViewer QGLViewer/debug)

if(QGLVIEWER_LIBRARY_RELEASE)
    if(QGLVIEWER_LIBRARY_DEBUG)
        set(QGLVIEWER_LIBRARY optimized ${QGLVIEWER_LIBRARY_RELEASE} debug ${QGLVIEWER_LIBRARY_DEBUG})
    else()
        set(QGLVIEWER_LIBRARY ${QGLVIEWER_LIBRARY_RELEASE})
    endif()
endif()

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(QGLVIEWER DEFAULT_MSG QGLVIEWER_INCLUDE_DIR QGLVIEWER_LIBRARY)