Fix symbol not present

Author: mulimoen

CHANGELOG.md

@@ -18,6 +18,7 @@
 
 - Fixed a bug where `H5Pget_fapl_direct` was only included when HDF5 was compiled
   with feature `have-parallel` instead of `have-direct`.
+- Fixed a missing symbol when building `hdf5-src` with `libz-sys`.
 
 ## 0.8.1
 

hdf5-src/Cargo.toml

@@ -34,7 +34,7 @@ deprecated = []
 threadsafe = []
 
 [dependencies]
-libz-sys = { version = "1.0.25", features = ["static"], optional = true, default-features=false }
+libz-sys = { version = "1.0.25", features = ["static", "libc"], optional = true, default-features=false }
 
 [build-dependencies]
 cmake = "0.1.44"