libpng: use $() to reference make variables instead of ${}
authorRicardo Martincoski <ricardo.martincoski@gmail.com>
Sun, 8 Jul 2018 05:16:59 +0000 (02:16 -0300)
committerArnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Sun, 8 Jul 2018 10:12:20 +0000 (12:12 +0200)
commitb492ab57855d1983fbf638580a074873ccbf96a6
treec6004dd4215254118b70db637d5bc5f4a266dd71
parentde6968156cbc27526aa65b22d74fd9bf78342503
libpng: use $() to reference make variables instead of ${}

Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
package/libpng/libpng.mk