Cargo Features

spng-sys has no features set by default.

[dependencies]
spng-sys = { version = "0.2.0-alpha.2", features = ["zlib-ng"] }
zlib-ng

Enables zlib-ng of libz-sys

libz-sys:

(Omit the libc feature if you don't require the corresponding functions.)

This allows higher-level crates depending on your library to opt into zlib-ng if desired.

Building zlib-ng requires cmake.

spng-sys has 1 feature without comment.