Build raw sqlite interface as libsqlite3-sys

Use pkg-config to find it.

Cargo.toml

@@ -15,3 +15,6 @@ name = "rusqlite"
 [dependencies]
 time = "~0.1.0"
 bitflags = "~0.1"
+
+[dependencies.libsqlite3-sys]
+path = "libsqlite3-sys"

build.rs

@@ -0,0 +1,5 @@
+extern crate "pkg-config" as pkg_config;
+
+fn main() {
+    pkg_config::find_library("sqlite3").unwrap();
+}

libsqlite3-sys/.gitignore

@@ -0,0 +1,3 @@
+/target/
+/doc/
+Cargo.lock

libsqlite3-sys/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "libsqlite3-sys"
+version = "0.0.9"
+authors = ["John Gallagher <jgallagher@bignerdranch.com>"]
+description = "Native bindings to the libsqlite3 library"
+license = "MIT"
+links = "sqlite3"
+build = "build.rs"
+
+[build-dependencies]
+pkg-config = "~0.2"

libsqlite3-sys/build.rs

@@ -0,0 +1,5 @@
+extern crate "pkg-config" as pkg_config;
+
+fn main() {
+    pkg_config::find_library("sqlite3").unwrap();
+}

libsqlite3-sys/src/bindgen.rs

@@ -1,4 +1,4 @@
-#![allow(raw_pointer_derive)]
+#![allow(raw_pointer_derive, non_snake_case, non_camel_case_types)]
 /* Running `target/bindgen /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/sqlite3.h -I/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/6.0/include` */
 /* automatically generated by rust-bindgen */
 
@@ -521,7 +521,6 @@ pub struct Struct_sqlite3_rtree_geometry {
     pub xDelUser: ::std::option::Option<extern "C" fn
                                             (arg1: *mut ::libc::c_void)>,
 }
-#[link(name = "sqlite3")]
 extern "C" {
     pub static mut sqlite3_version: *const ::libc::c_char;
     pub static mut sqlite3_temp_directory: *mut ::libc::c_char;

libsqlite3-sys/src/lib.rs

@@ -1,4 +1,10 @@
+#![feature(libc)]
+#![allow(non_snake_case)]
+
+extern crate libc;
+
 pub use self::bindgen::*;
+
 use std::mem;
 use libc::{c_int, c_void};
 

src/lib.rs

@@ -52,6 +52,7 @@
 #![cfg_attr(test, feature(test))]
 
 extern crate libc;
+extern crate "libsqlite3-sys" as ffi;
 #[macro_use] extern crate rustc_bitflags;
 
 use std::mem;
@@ -76,9 +77,6 @@ pub use transaction::{SqliteTransactionBehavior,
 pub mod types;
 mod transaction;
 
-/// Automatically generated FFI bindings (via [bindgen](https://github.com/crabtw/rust-bindgen)).
-#[allow(dead_code,non_snake_case,non_camel_case_types)] pub mod ffi;
-
 /// A typedef of the result returned by many methods.
 pub type SqliteResult<T> = Result<T, SqliteError>;
 
@@ -705,6 +703,7 @@ impl<'stmt> SqliteRow<'stmt> {
 
 #[cfg(test)]
 mod test {
+    extern crate "libsqlite3-sys" as ffi;
     use super::*;
 
     fn checked_memory_handle() -> SqliteConnection {