prefix=/home/vagrant/rcairo.win64/vendor/local
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include/libpng16

Name: libpng
Description: Loads and saves PNG files
Version: 1.6.14
Libs: -L${libdir} -lpng16
Libs.private: -lz 
Cflags: -I${includedir}