From 951ca804e234569619ac88f85e43359ed50c2f11 Mon Sep 17 00:00:00 2001
From: Dan Burkert <dan@danburkert.com>
Date: Thu, 8 Jan 2015 23:07:44 -0800
Subject: [PATCH] Execute bindgen in build.rs

---
 lmdb-sys/Cargo.toml |  2 +-
 lmdb-sys/build.rs   | 19 ++++++++++++++++---
 lmdb-sys/src/lib.rs | 13 ++++++++-----
 3 files changed, 25 insertions(+), 9 deletions(-)

diff --git a/lmdb-sys/Cargo.toml b/lmdb-sys/Cargo.toml
index 57c1a8c..fc35cf4 100644
--- a/lmdb-sys/Cargo.toml
+++ b/lmdb-sys/Cargo.toml
@@ -12,7 +12,7 @@ build = "build.rs"
 
 name = "lmdb-sys"
 
-[dependencies.rust-bindgen]
+[build-dependencies.rust-bindgen]
 git = "https://github.com/crabtw/rust-bindgen.git"
 
 [build-dependencies.pkg-config]
diff --git a/lmdb-sys/build.rs b/lmdb-sys/build.rs
index dee22ab..9818abb 100644
--- a/lmdb-sys/build.rs
+++ b/lmdb-sys/build.rs
@@ -1,18 +1,31 @@
 extern crate "pkg-config" as pkg_config;
+extern crate bindgen;
 extern crate gcc;
 
+use bindgen::{Bindings, BindgenOptions, LinkType};
 use std::default::Default;
+use std::io::fs;
 use std::os;
 
 fn main() {
-    if !pkg_config::find_library("liblmdb").is_ok() {
 
-        let mdb = Path::new(os::getenv("CARGO_MANIFEST_DIR").unwrap())
-                       .join_many(&["mdb", "libraries", "liblmdb"]);
+    let mdb = Path::new(os::getenv("CARGO_MANIFEST_DIR").unwrap())
+                   .join_many(&["mdb", "libraries", "liblmdb"]);
 
+    if !pkg_config::find_library("liblmdb").is_ok() {
         gcc::compile_library("liblmdb.a",
                              &Default::default(),
                              &[mdb.join("mdb.c").as_str().unwrap(),
                                mdb.join("midl.c").as_str().unwrap()]);
     }
+
+    let mut bindgen_opts: BindgenOptions = Default::default();
+    bindgen_opts.clang_args.push(mdb.join("lmdb.h").as_str().unwrap().to_string());
+    bindgen_opts.links.push(("lmdb".to_string(), LinkType::Default));
+    bindgen_opts.builtins = true;
+
+    let bindings: Bindings = Bindings::generate(&bindgen_opts, None, None).unwrap();
+    let mut dst = fs::File::create(&Path::new(os::getenv("OUT_DIR").unwrap())
+                                         .join("lmdb.rs")).unwrap();
+    bindings.write(&mut dst).unwrap()
 }
diff --git a/lmdb-sys/src/lib.rs b/lmdb-sys/src/lib.rs
index 77a6135..881be80 100644
--- a/lmdb-sys/src/lib.rs
+++ b/lmdb-sys/src/lib.rs
@@ -1,13 +1,16 @@
-#![allow(dead_code, uppercase_variables, non_camel_case_types)]
+#![allow(
+    dead_code,
+    missing_copy_implementations,
+    non_camel_case_types,
+    non_snake_case,
+    raw_pointer_derive,
+   )]
 #![feature(plugin)]
 
-#[plugin]
-extern crate bindgen;
 extern crate libc;
 
-use libc::{size_t, mode_t};
 pub use constants::*;
 
 mod constants;
 
-bindgen!("../mdb/libraries/liblmdb/lmdb.h", match="lmdb.h", link="lmdb");
+include!(concat!(env!("OUT_DIR"), "/lmdb.rs"));