contrib/png: require at least libpng 1.5.4
authorSean McGovern <gseanmcg@gmail.com>
Sat, 15 Apr 2017 14:19:19 +0000 (10:19 -0400)
committerRémi Denis-Courmont <remi@remlab.net>
Sat, 15 Apr 2017 16:22:12 +0000 (19:22 +0300)
commitdf7d1159b81b8907e5144739fc92da8eed202d9c
tree085b38fd6fff267272f0956ea737c58cfe8398fe
parent4bbc46a7cbc507ee04e6044d36171564d30d779a
contrib/png: require at least libpng 1.5.4

png_set_alpha_mode() was not introduced until this version.

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>
contrib/src/png/rules.mak