Fix bindings. (#77)

* Fix bindings.

PR #74 introduced a manually-generated change to the bindings that I
accidentally broke in #76.

* Specify the "runtime" feature of bindgen.

As it became non-default in rust-lang/rust-bindgen#1620.

* Make binding generation work properly on Windows too.

Author: emilio

lmdb-sys/Cargo.toml

@@ -12,7 +12,7 @@ readme = "../README.md"
 keywords = ["LMDB", "database", "storage-engine", "bindings", "library"]
 categories = ["database", "external-ffi-bindings"]
 
-# NB: Use "--feature bindgen" to generate bindings.
+# NB: Use "--features bindgen" to generate bindings.
 build = "build.rs"
 
 [lib]
@@ -28,7 +28,7 @@ libc = "0.2"
 [build-dependencies]
 pkg-config = "0.3"
 cc = "1.0"
-bindgen = { version = "0.53.2", default-features = false, optional = true }
+bindgen = { version = "0.53.2", default-features = false, optional = true, features = ["runtime"] }
 
 [features]
 default = []

lmdb-sys/bindgen.rs

@@ -53,7 +53,8 @@ pub fn generate() {
         .size_t_is_usize(true)
         .ctypes_prefix("::libc")
         .blacklist_item("mode_t")
-        .blacklist_item("filehandle_t")
+        .blacklist_item("mdb_mode_t")
+        .blacklist_item("mdb_filehandle_t")
         .blacklist_item("^__.*")
         .parse_callbacks(Box::new(Callbacks {}))
         .layout_tests(false)

lmdb-sys/src/bindings.rs

@@ -52,8 +52,6 @@ pub const MDB_BAD_TXN: ::libc::c_int = -30782;
 pub const MDB_BAD_VALSIZE: ::libc::c_int = -30781;
 pub const MDB_BAD_DBI: ::libc::c_int = -30780;
 pub const MDB_LAST_ERRCODE: ::libc::c_int = -30780;
-pub type mdb_mode_t = mode_t;
-pub type mdb_filehandle_t = ::libc::c_int;
 #[repr(C)]
 #[derive(Debug, Copy, Clone)]
 pub struct MDB_env {

lmdb-sys/src/lib.rs

@@ -7,16 +7,16 @@ extern crate libc;
 
 #[cfg(unix)]
 #[allow(non_camel_case_types)]
-pub type mode_t = ::libc::mode_t;
+pub type mdb_mode_t = ::libc::mode_t;
 #[cfg(windows)]
 #[allow(non_camel_case_types)]
-pub type mode_t = ::libc::c_int;
+pub type mdb_mode_t = ::libc::c_int;
 
 #[cfg(unix)]
 #[allow(non_camel_case_types)]
-pub type filehandle_t = ::libc::c_int;
+pub type mdb_filehandle_t = ::libc::c_int;
 #[cfg(windows)]
 #[allow(non_camel_case_types)]
-pub type filehandle_t = *mut ::libc::c_void;
+pub type mdb_filehandle_t = *mut ::libc::c_void;
 
 include!("bindings.rs");