Leon Gast (“When We Were Kings”) is attached to direct a documentary on the life of boxer Manny Pacquiao through Revelin Studios.

Pic’s produced by Ken Mayer and Ryan Moore; Christine Peters (“How to Lose a Guy in 10 Days”) exec produces. Lensing began this week.

Pacquia’s a seven-division world champion and goes for another title in a fight Saturday against Antonio Margarito.

Pic will focus on his emergence from poverty, his election in May to the Congress of the Philippines and his plans to introduce legislation aimed at slowing the tide of human trafficking in the Philippines and other developing nations.

“Our goal is to craft an intimate character study of a man who came from nothing, achieved great things and selflessly leveraged his success for the benefits of his fellow countrymen,” Gast said.

Gast produced 2008 music docu “Soul Power,” created from footage he shot for 1996’s “When We Were Kings.” He won the docu director trophy at Sundance this year for “Smash His Camera,” about Ron Galella.