Calypso Bars

2 c. flour 1 c. sugar 1 block butter or margarine 1 tsp. baking soda 2 tsp. baking powder 2 eggs, beaten pinch of salt 1 sm. can crushed pineapple, undrained Cream shortening and sugar. Add eggs, flour and pineapple gradually. Bake in 350 degree oven for 30 minutes.