# From https://sourceforge.net/p/png-mng/mailman/message/37860896/
sha256  535b479b2467ff231a3ec6d92a525906fb8ef27978be4f66dbe05d3f3a01b3a1  libpng-1.6.40.tar.xz
# Locally computed:
sha256  5c0bb4b05b1354ae7c173532b6702ea68b611047ff9b91c4d3af77da39c195d9  LICENSE