Linux heracles.o2switch.net 4.18.0-553.62.1.lve.el8.x86_64 #1 SMP Mon Jul 21 17:50:35 UTC 2025 x86_64

//lib64/pkgconfig/libpng16.pc

 prefix=/usr
exec_prefix=/usr
libdir=/usr/lib64
includedir=/usr/include/libpng16

Name: libpng
Description: Loads and saves PNG files
Version: 1.6.34
Requires: zlib
Libs: -L${libdir} -lpng16
Libs.private: -lm -lz -lm 
Cflags: -I${includedir}