Cargo Features
[dependencies]
libz-sys = { version = "1.1.16", default-features = false, features = ["zlib-ng", "stock-zlib", "asm", "static"] }
- default = libc, stock-zlib
-
These default features are set whenever
libz-sys
is added without
somewhere in the dependency tree.default-features = false - zlib-ng = cmake, libc
-
(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. - stock-zlib default
- asm
-
Deprecated: the assembly routines are outdated, and either reduce performance or cause segfaults.
- static
-
Enable this feature if you want to have a statically linked libz
Features from optional dependencies
In crates that don't use the dep:
syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.
- libc default zlib-ng?
-
Enables libc
When this feature is disabled, zlib will be built in Z_SOLO mode which removes dependency on any external libraries like libc at the cost of eliminating some high-level functions like gz*, compress* and uncompress, and requiring embedder to provide memory allocation routines to deflate and inflate.
Affects
libz-sys::gzFile
,libz-sys::gzFile_s
,libz-sys::z_off_t
,libz-sys::z_off_t
… - cmake build zlib-ng?