prefix=/Users/travis/build/ignisf/image_compressor_pack/ports/x86_64-apple-darwin15.0.0/libpng/1.6.21
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include/libpng16

Name: libpng
Description: Loads and saves PNG files
Version: 1.6.21
Libs: -L${libdir} -lpng16
Libs.private: -lz 
Cflags: -I${includedir}