GNAT Modified General Public License(簡稱:Modified GPL、GMGPL、MGPL)是一種軟體授權方式,它是原有GNU通用公共许可证(簡稱:GPL)授權方式的一種特別修訂版,是針對Ada程式語言的類屬特性而修訂,其修訂的內容主要如下:
As a special exception, if other files instantiate generics from this unit, or you link this unit with other files to produce an executable, this unit does not by itself cause the resulting executable to be covered by the GNU General Public License. This exception does not however invalidate any other reasons why the executable file might be covered by the GNU Public License.