Thanks R. Diez <rdiezmail-comparevcd@yahoo.de> for the patch!
#-------------------------------------------------------------------------------
add_definitions(${QT_DEFINITIONS})
#-------------------------------------------------------------------------------
add_definitions(${QT_DEFINITIONS})
-add_definitions(-Wextra)
+add_definitions(-Wall -Wextra)
if(NOT DISABLE_WERROR)
add_definitions(-Werror)
if(NOT DISABLE_WERROR)
add_definitions(-Werror)