FIND_PATH (QWT_INCLUDE_DIR 
    NAMES 
        qwt.h 
    HINTS
        $ENV{QWTDIR}/src
        /usr/include/qwt
)

FIND_LIBRARY (QWT_LIBRARY
    NAMES qwt
    HINTS
        $ENV{QWTDIR}/lib
)

SET (QWT_LIBRARIES ${QWT_LIBRARY})

INCLUDE ( FindPackageHandleStandardArgs )
FIND_PACKAGE_HANDLE_STANDARD_ARGS( QWT DEFAULT_MSG QWT_LIBRARIES QWT_INCLUDE_DIR )