From b5ebb8e8d7878073ca58a45a0dc78ac53d403b7f Mon Sep 17 00:00:00 2001
From: Jake McGinty <me@jake.su>
Date: Sun, 21 Nov 2021 15:33:03 +0900
Subject: [PATCH] wireguard-control-sys: use pregenerated bindings

cuts down on total dependencies and build time goes from ~8s -> ~2s
(on my desktop).
---
 wireguard-control-sys/Cargo.toml              |   5 +-
 .../bindgen-bindings/bindings.rs              | 968 ++++++++++++++++++
 wireguard-control-sys/build.rs                |  36 +-
 3 files changed, 994 insertions(+), 15 deletions(-)
 create mode 100644 wireguard-control-sys/bindgen-bindings/bindings.rs

diff --git a/wireguard-control-sys/Cargo.toml b/wireguard-control-sys/Cargo.toml
index 2a47185..815a4df 100644
--- a/wireguard-control-sys/Cargo.toml
+++ b/wireguard-control-sys/Cargo.toml
@@ -11,6 +11,9 @@ version = "1.5.1"
 [dependencies]
 libc = "0.2"
 
+[features]
+buildtime_bindgen = ["bindgen"]
+
 [build-dependencies]
-bindgen = { version = "0", default-features = false }
+bindgen = { version = "0", default-features = false, optional = true }
 cc = "1.0"
diff --git a/wireguard-control-sys/bindgen-bindings/bindings.rs b/wireguard-control-sys/bindgen-bindings/bindings.rs
new file mode 100644
index 0000000..e6f404a
--- /dev/null
+++ b/wireguard-control-sys/bindgen-bindings/bindings.rs
@@ -0,0 +1,968 @@
+/* automatically generated by rust-bindgen 0.59.1 */
+
+pub type __uint8_t = ::std::os::raw::c_uchar;
+pub type __uint16_t = ::std::os::raw::c_ushort;
+pub type __uint32_t = ::std::os::raw::c_uint;
+pub type __int64_t = ::std::os::raw::c_long;
+pub type __uint64_t = ::std::os::raw::c_ulong;
+pub type sa_family_t = ::std::os::raw::c_ushort;
+#[repr(C)]
+#[derive(Debug, Default, Copy, Clone)]
+pub struct sockaddr {
+    pub sa_family: sa_family_t,
+    pub sa_data: [::std::os::raw::c_char; 14usize],
+}
+#[test]
+fn bindgen_test_layout_sockaddr() {
+    assert_eq!(
+        ::std::mem::size_of::<sockaddr>(),
+        16usize,
+        concat!("Size of: ", stringify!(sockaddr))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<sockaddr>(),
+        2usize,
+        concat!("Alignment of ", stringify!(sockaddr))
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<sockaddr>())).sa_family as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(sockaddr),
+            "::",
+            stringify!(sa_family)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<sockaddr>())).sa_data as *const _ as usize },
+        2usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(sockaddr),
+            "::",
+            stringify!(sa_data)
+        )
+    );
+}
+pub type in_addr_t = u32;
+#[repr(C)]
+#[derive(Debug, Default, Copy, Clone)]
+pub struct in_addr {
+    pub s_addr: in_addr_t,
+}
+#[test]
+fn bindgen_test_layout_in_addr() {
+    assert_eq!(
+        ::std::mem::size_of::<in_addr>(),
+        4usize,
+        concat!("Size of: ", stringify!(in_addr))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<in_addr>(),
+        4usize,
+        concat!("Alignment of ", stringify!(in_addr))
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<in_addr>())).s_addr as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(in_addr),
+            "::",
+            stringify!(s_addr)
+        )
+    );
+}
+pub type in_port_t = u16;
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct in6_addr {
+    pub __in6_u: in6_addr__bindgen_ty_1,
+}
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub union in6_addr__bindgen_ty_1 {
+    pub __u6_addr8: [u8; 16usize],
+    pub __u6_addr16: [u16; 8usize],
+    pub __u6_addr32: [u32; 4usize],
+}
+#[test]
+fn bindgen_test_layout_in6_addr__bindgen_ty_1() {
+    assert_eq!(
+        ::std::mem::size_of::<in6_addr__bindgen_ty_1>(),
+        16usize,
+        concat!("Size of: ", stringify!(in6_addr__bindgen_ty_1))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<in6_addr__bindgen_ty_1>(),
+        4usize,
+        concat!("Alignment of ", stringify!(in6_addr__bindgen_ty_1))
+    );
+    assert_eq!(
+        unsafe {
+            &(*(::std::ptr::null::<in6_addr__bindgen_ty_1>())).__u6_addr8 as *const _ as usize
+        },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(in6_addr__bindgen_ty_1),
+            "::",
+            stringify!(__u6_addr8)
+        )
+    );
+    assert_eq!(
+        unsafe {
+            &(*(::std::ptr::null::<in6_addr__bindgen_ty_1>())).__u6_addr16 as *const _ as usize
+        },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(in6_addr__bindgen_ty_1),
+            "::",
+            stringify!(__u6_addr16)
+        )
+    );
+    assert_eq!(
+        unsafe {
+            &(*(::std::ptr::null::<in6_addr__bindgen_ty_1>())).__u6_addr32 as *const _ as usize
+        },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(in6_addr__bindgen_ty_1),
+            "::",
+            stringify!(__u6_addr32)
+        )
+    );
+}
+impl Default for in6_addr__bindgen_ty_1 {
+    fn default() -> Self {
+        let mut s = ::std::mem::MaybeUninit::<Self>::uninit();
+        unsafe {
+            ::std::ptr::write_bytes(s.as_mut_ptr(), 0, 1);
+            s.assume_init()
+        }
+    }
+}
+impl ::std::fmt::Debug for in6_addr__bindgen_ty_1 {
+    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
+        write!(f, "in6_addr__bindgen_ty_1 {{ union }}")
+    }
+}
+#[test]
+fn bindgen_test_layout_in6_addr() {
+    assert_eq!(
+        ::std::mem::size_of::<in6_addr>(),
+        16usize,
+        concat!("Size of: ", stringify!(in6_addr))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<in6_addr>(),
+        4usize,
+        concat!("Alignment of ", stringify!(in6_addr))
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<in6_addr>())).__in6_u as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(in6_addr),
+            "::",
+            stringify!(__in6_u)
+        )
+    );
+}
+impl Default for in6_addr {
+    fn default() -> Self {
+        let mut s = ::std::mem::MaybeUninit::<Self>::uninit();
+        unsafe {
+            ::std::ptr::write_bytes(s.as_mut_ptr(), 0, 1);
+            s.assume_init()
+        }
+    }
+}
+impl ::std::fmt::Debug for in6_addr {
+    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
+        write!(f, "in6_addr {{ __in6_u: {:?} }}", self.__in6_u)
+    }
+}
+#[repr(C)]
+#[derive(Debug, Default, Copy, Clone)]
+pub struct sockaddr_in {
+    pub sin_family: sa_family_t,
+    pub sin_port: in_port_t,
+    pub sin_addr: in_addr,
+    pub sin_zero: [::std::os::raw::c_uchar; 8usize],
+}
+#[test]
+fn bindgen_test_layout_sockaddr_in() {
+    assert_eq!(
+        ::std::mem::size_of::<sockaddr_in>(),
+        16usize,
+        concat!("Size of: ", stringify!(sockaddr_in))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<sockaddr_in>(),
+        4usize,
+        concat!("Alignment of ", stringify!(sockaddr_in))
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<sockaddr_in>())).sin_family as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(sockaddr_in),
+            "::",
+            stringify!(sin_family)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<sockaddr_in>())).sin_port as *const _ as usize },
+        2usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(sockaddr_in),
+            "::",
+            stringify!(sin_port)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<sockaddr_in>())).sin_addr as *const _ as usize },
+        4usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(sockaddr_in),
+            "::",
+            stringify!(sin_addr)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<sockaddr_in>())).sin_zero as *const _ as usize },
+        8usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(sockaddr_in),
+            "::",
+            stringify!(sin_zero)
+        )
+    );
+}
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct sockaddr_in6 {
+    pub sin6_family: sa_family_t,
+    pub sin6_port: in_port_t,
+    pub sin6_flowinfo: u32,
+    pub sin6_addr: in6_addr,
+    pub sin6_scope_id: u32,
+}
+#[test]
+fn bindgen_test_layout_sockaddr_in6() {
+    assert_eq!(
+        ::std::mem::size_of::<sockaddr_in6>(),
+        28usize,
+        concat!("Size of: ", stringify!(sockaddr_in6))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<sockaddr_in6>(),
+        4usize,
+        concat!("Alignment of ", stringify!(sockaddr_in6))
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<sockaddr_in6>())).sin6_family as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(sockaddr_in6),
+            "::",
+            stringify!(sin6_family)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<sockaddr_in6>())).sin6_port as *const _ as usize },
+        2usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(sockaddr_in6),
+            "::",
+            stringify!(sin6_port)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<sockaddr_in6>())).sin6_flowinfo as *const _ as usize },
+        4usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(sockaddr_in6),
+            "::",
+            stringify!(sin6_flowinfo)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<sockaddr_in6>())).sin6_addr as *const _ as usize },
+        8usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(sockaddr_in6),
+            "::",
+            stringify!(sin6_addr)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<sockaddr_in6>())).sin6_scope_id as *const _ as usize },
+        24usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(sockaddr_in6),
+            "::",
+            stringify!(sin6_scope_id)
+        )
+    );
+}
+impl Default for sockaddr_in6 {
+    fn default() -> Self {
+        let mut s = ::std::mem::MaybeUninit::<Self>::uninit();
+        unsafe {
+            ::std::ptr::write_bytes(s.as_mut_ptr(), 0, 1);
+            s.assume_init()
+        }
+    }
+}
+impl ::std::fmt::Debug for sockaddr_in6 {
+    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
+        write ! (f , "sockaddr_in6 {{ sin6_family: {:?}, sin6_port: {:?}, sin6_flowinfo: {:?}, sin6_addr: {:?}, sin6_scope_id: {:?} }}" , self . sin6_family , self . sin6_port , self . sin6_flowinfo , self . sin6_addr , self . sin6_scope_id)
+    }
+}
+pub type wg_key = [u8; 32usize];
+pub type wg_key_b64_string = [::std::os::raw::c_char; 45usize];
+#[repr(C)]
+#[derive(Debug, Default, Copy, Clone)]
+pub struct timespec64 {
+    pub tv_sec: i64,
+    pub tv_nsec: i64,
+}
+#[test]
+fn bindgen_test_layout_timespec64() {
+    assert_eq!(
+        ::std::mem::size_of::<timespec64>(),
+        16usize,
+        concat!("Size of: ", stringify!(timespec64))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<timespec64>(),
+        8usize,
+        concat!("Alignment of ", stringify!(timespec64))
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<timespec64>())).tv_sec as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(timespec64),
+            "::",
+            stringify!(tv_sec)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<timespec64>())).tv_nsec as *const _ as usize },
+        8usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(timespec64),
+            "::",
+            stringify!(tv_nsec)
+        )
+    );
+}
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct wg_allowedip {
+    pub family: u16,
+    pub __bindgen_anon_1: wg_allowedip__bindgen_ty_1,
+    pub cidr: u8,
+    pub next_allowedip: *mut wg_allowedip,
+}
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub union wg_allowedip__bindgen_ty_1 {
+    pub ip4: in_addr,
+    pub ip6: in6_addr,
+}
+#[test]
+fn bindgen_test_layout_wg_allowedip__bindgen_ty_1() {
+    assert_eq!(
+        ::std::mem::size_of::<wg_allowedip__bindgen_ty_1>(),
+        16usize,
+        concat!("Size of: ", stringify!(wg_allowedip__bindgen_ty_1))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<wg_allowedip__bindgen_ty_1>(),
+        4usize,
+        concat!("Alignment of ", stringify!(wg_allowedip__bindgen_ty_1))
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_allowedip__bindgen_ty_1>())).ip4 as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_allowedip__bindgen_ty_1),
+            "::",
+            stringify!(ip4)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_allowedip__bindgen_ty_1>())).ip6 as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_allowedip__bindgen_ty_1),
+            "::",
+            stringify!(ip6)
+        )
+    );
+}
+impl Default for wg_allowedip__bindgen_ty_1 {
+    fn default() -> Self {
+        let mut s = ::std::mem::MaybeUninit::<Self>::uninit();
+        unsafe {
+            ::std::ptr::write_bytes(s.as_mut_ptr(), 0, 1);
+            s.assume_init()
+        }
+    }
+}
+impl ::std::fmt::Debug for wg_allowedip__bindgen_ty_1 {
+    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
+        write!(f, "wg_allowedip__bindgen_ty_1 {{ union }}")
+    }
+}
+#[test]
+fn bindgen_test_layout_wg_allowedip() {
+    assert_eq!(
+        ::std::mem::size_of::<wg_allowedip>(),
+        32usize,
+        concat!("Size of: ", stringify!(wg_allowedip))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<wg_allowedip>(),
+        8usize,
+        concat!("Alignment of ", stringify!(wg_allowedip))
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_allowedip>())).family as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_allowedip),
+            "::",
+            stringify!(family)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_allowedip>())).cidr as *const _ as usize },
+        20usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_allowedip),
+            "::",
+            stringify!(cidr)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_allowedip>())).next_allowedip as *const _ as usize },
+        24usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_allowedip),
+            "::",
+            stringify!(next_allowedip)
+        )
+    );
+}
+impl Default for wg_allowedip {
+    fn default() -> Self {
+        let mut s = ::std::mem::MaybeUninit::<Self>::uninit();
+        unsafe {
+            ::std::ptr::write_bytes(s.as_mut_ptr(), 0, 1);
+            s.assume_init()
+        }
+    }
+}
+impl ::std::fmt::Debug for wg_allowedip {
+    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
+        write ! (f , "wg_allowedip {{ family: {:?}, __bindgen_anon_1: {:?}, cidr: {:?}, next_allowedip: {:?} }}" , self . family , self . __bindgen_anon_1 , self . cidr , self . next_allowedip)
+    }
+}
+impl wg_peer_flags {
+    pub const WGPEER_REMOVE_ME: wg_peer_flags = wg_peer_flags(1);
+}
+impl wg_peer_flags {
+    pub const WGPEER_REPLACE_ALLOWEDIPS: wg_peer_flags = wg_peer_flags(2);
+}
+impl wg_peer_flags {
+    pub const WGPEER_HAS_PUBLIC_KEY: wg_peer_flags = wg_peer_flags(4);
+}
+impl wg_peer_flags {
+    pub const WGPEER_HAS_PRESHARED_KEY: wg_peer_flags = wg_peer_flags(8);
+}
+impl wg_peer_flags {
+    pub const WGPEER_HAS_PERSISTENT_KEEPALIVE_INTERVAL: wg_peer_flags = wg_peer_flags(16);
+}
+impl ::std::ops::BitOr<wg_peer_flags> for wg_peer_flags {
+    type Output = Self;
+    #[inline]
+    fn bitor(self, other: Self) -> Self {
+        wg_peer_flags(self.0 | other.0)
+    }
+}
+impl ::std::ops::BitOrAssign for wg_peer_flags {
+    #[inline]
+    fn bitor_assign(&mut self, rhs: wg_peer_flags) {
+        self.0 |= rhs.0;
+    }
+}
+impl ::std::ops::BitAnd<wg_peer_flags> for wg_peer_flags {
+    type Output = Self;
+    #[inline]
+    fn bitand(self, other: Self) -> Self {
+        wg_peer_flags(self.0 & other.0)
+    }
+}
+impl ::std::ops::BitAndAssign for wg_peer_flags {
+    #[inline]
+    fn bitand_assign(&mut self, rhs: wg_peer_flags) {
+        self.0 &= rhs.0;
+    }
+}
+#[repr(transparent)]
+#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
+pub struct wg_peer_flags(pub ::std::os::raw::c_uint);
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct wg_peer {
+    pub flags: wg_peer_flags,
+    pub public_key: wg_key,
+    pub preshared_key: wg_key,
+    pub endpoint: wg_peer__bindgen_ty_1,
+    pub last_handshake_time: timespec64,
+    pub rx_bytes: u64,
+    pub tx_bytes: u64,
+    pub persistent_keepalive_interval: u16,
+    pub first_allowedip: *mut wg_allowedip,
+    pub last_allowedip: *mut wg_allowedip,
+    pub next_peer: *mut wg_peer,
+}
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub union wg_peer__bindgen_ty_1 {
+    pub addr: sockaddr,
+    pub addr4: sockaddr_in,
+    pub addr6: sockaddr_in6,
+}
+#[test]
+fn bindgen_test_layout_wg_peer__bindgen_ty_1() {
+    assert_eq!(
+        ::std::mem::size_of::<wg_peer__bindgen_ty_1>(),
+        28usize,
+        concat!("Size of: ", stringify!(wg_peer__bindgen_ty_1))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<wg_peer__bindgen_ty_1>(),
+        4usize,
+        concat!("Alignment of ", stringify!(wg_peer__bindgen_ty_1))
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_peer__bindgen_ty_1>())).addr as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer__bindgen_ty_1),
+            "::",
+            stringify!(addr)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_peer__bindgen_ty_1>())).addr4 as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer__bindgen_ty_1),
+            "::",
+            stringify!(addr4)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_peer__bindgen_ty_1>())).addr6 as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer__bindgen_ty_1),
+            "::",
+            stringify!(addr6)
+        )
+    );
+}
+impl Default for wg_peer__bindgen_ty_1 {
+    fn default() -> Self {
+        let mut s = ::std::mem::MaybeUninit::<Self>::uninit();
+        unsafe {
+            ::std::ptr::write_bytes(s.as_mut_ptr(), 0, 1);
+            s.assume_init()
+        }
+    }
+}
+impl ::std::fmt::Debug for wg_peer__bindgen_ty_1 {
+    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
+        write!(f, "wg_peer__bindgen_ty_1 {{ union }}")
+    }
+}
+#[test]
+fn bindgen_test_layout_wg_peer() {
+    assert_eq!(
+        ::std::mem::size_of::<wg_peer>(),
+        160usize,
+        concat!("Size of: ", stringify!(wg_peer))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<wg_peer>(),
+        8usize,
+        concat!("Alignment of ", stringify!(wg_peer))
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_peer>())).flags as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer),
+            "::",
+            stringify!(flags)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_peer>())).public_key as *const _ as usize },
+        4usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer),
+            "::",
+            stringify!(public_key)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_peer>())).preshared_key as *const _ as usize },
+        36usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer),
+            "::",
+            stringify!(preshared_key)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_peer>())).endpoint as *const _ as usize },
+        68usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer),
+            "::",
+            stringify!(endpoint)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_peer>())).last_handshake_time as *const _ as usize },
+        96usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer),
+            "::",
+            stringify!(last_handshake_time)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_peer>())).rx_bytes as *const _ as usize },
+        112usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer),
+            "::",
+            stringify!(rx_bytes)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_peer>())).tx_bytes as *const _ as usize },
+        120usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer),
+            "::",
+            stringify!(tx_bytes)
+        )
+    );
+    assert_eq!(
+        unsafe {
+            &(*(::std::ptr::null::<wg_peer>())).persistent_keepalive_interval as *const _ as usize
+        },
+        128usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer),
+            "::",
+            stringify!(persistent_keepalive_interval)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_peer>())).first_allowedip as *const _ as usize },
+        136usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer),
+            "::",
+            stringify!(first_allowedip)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_peer>())).last_allowedip as *const _ as usize },
+        144usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer),
+            "::",
+            stringify!(last_allowedip)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_peer>())).next_peer as *const _ as usize },
+        152usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_peer),
+            "::",
+            stringify!(next_peer)
+        )
+    );
+}
+impl Default for wg_peer {
+    fn default() -> Self {
+        let mut s = ::std::mem::MaybeUninit::<Self>::uninit();
+        unsafe {
+            ::std::ptr::write_bytes(s.as_mut_ptr(), 0, 1);
+            s.assume_init()
+        }
+    }
+}
+impl ::std::fmt::Debug for wg_peer {
+    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
+        write ! (f , "wg_peer {{ flags: {:?}, public_key: [{}], preshared_key: [{}], endpoint: {:?}, last_handshake_time: {:?}, rx_bytes: {:?}, tx_bytes: {:?}, persistent_keepalive_interval: {:?}, first_allowedip: {:?}, last_allowedip: {:?}, next_peer: {:?} }}" , self . flags , self . public_key . iter () . enumerate () . map (| (i , v) | format ! ("{}{:?}" , if i > 0 { ", " } else { "" } , v)) . collect :: < String > () , self . preshared_key . iter () . enumerate () . map (| (i , v) | format ! ("{}{:?}" , if i > 0 { ", " } else { "" } , v)) . collect :: < String > () , self . endpoint , self . last_handshake_time , self . rx_bytes , self . tx_bytes , self . persistent_keepalive_interval , self . first_allowedip , self . last_allowedip , self . next_peer)
+    }
+}
+impl wg_device_flags {
+    pub const WGDEVICE_REPLACE_PEERS: wg_device_flags = wg_device_flags(1);
+}
+impl wg_device_flags {
+    pub const WGDEVICE_HAS_PRIVATE_KEY: wg_device_flags = wg_device_flags(2);
+}
+impl wg_device_flags {
+    pub const WGDEVICE_HAS_PUBLIC_KEY: wg_device_flags = wg_device_flags(4);
+}
+impl wg_device_flags {
+    pub const WGDEVICE_HAS_LISTEN_PORT: wg_device_flags = wg_device_flags(8);
+}
+impl wg_device_flags {
+    pub const WGDEVICE_HAS_FWMARK: wg_device_flags = wg_device_flags(16);
+}
+impl ::std::ops::BitOr<wg_device_flags> for wg_device_flags {
+    type Output = Self;
+    #[inline]
+    fn bitor(self, other: Self) -> Self {
+        wg_device_flags(self.0 | other.0)
+    }
+}
+impl ::std::ops::BitOrAssign for wg_device_flags {
+    #[inline]
+    fn bitor_assign(&mut self, rhs: wg_device_flags) {
+        self.0 |= rhs.0;
+    }
+}
+impl ::std::ops::BitAnd<wg_device_flags> for wg_device_flags {
+    type Output = Self;
+    #[inline]
+    fn bitand(self, other: Self) -> Self {
+        wg_device_flags(self.0 & other.0)
+    }
+}
+impl ::std::ops::BitAndAssign for wg_device_flags {
+    #[inline]
+    fn bitand_assign(&mut self, rhs: wg_device_flags) {
+        self.0 &= rhs.0;
+    }
+}
+#[repr(transparent)]
+#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
+pub struct wg_device_flags(pub ::std::os::raw::c_uint);
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct wg_device {
+    pub name: [::std::os::raw::c_char; 16usize],
+    pub ifindex: u32,
+    pub flags: wg_device_flags,
+    pub public_key: wg_key,
+    pub private_key: wg_key,
+    pub fwmark: u32,
+    pub listen_port: u16,
+    pub first_peer: *mut wg_peer,
+    pub last_peer: *mut wg_peer,
+}
+#[test]
+fn bindgen_test_layout_wg_device() {
+    assert_eq!(
+        ::std::mem::size_of::<wg_device>(),
+        112usize,
+        concat!("Size of: ", stringify!(wg_device))
+    );
+    assert_eq!(
+        ::std::mem::align_of::<wg_device>(),
+        8usize,
+        concat!("Alignment of ", stringify!(wg_device))
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_device>())).name as *const _ as usize },
+        0usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_device),
+            "::",
+            stringify!(name)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_device>())).ifindex as *const _ as usize },
+        16usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_device),
+            "::",
+            stringify!(ifindex)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_device>())).flags as *const _ as usize },
+        20usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_device),
+            "::",
+            stringify!(flags)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_device>())).public_key as *const _ as usize },
+        24usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_device),
+            "::",
+            stringify!(public_key)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_device>())).private_key as *const _ as usize },
+        56usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_device),
+            "::",
+            stringify!(private_key)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_device>())).fwmark as *const _ as usize },
+        88usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_device),
+            "::",
+            stringify!(fwmark)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_device>())).listen_port as *const _ as usize },
+        92usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_device),
+            "::",
+            stringify!(listen_port)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_device>())).first_peer as *const _ as usize },
+        96usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_device),
+            "::",
+            stringify!(first_peer)
+        )
+    );
+    assert_eq!(
+        unsafe { &(*(::std::ptr::null::<wg_device>())).last_peer as *const _ as usize },
+        104usize,
+        concat!(
+            "Offset of field: ",
+            stringify!(wg_device),
+            "::",
+            stringify!(last_peer)
+        )
+    );
+}
+impl Default for wg_device {
+    fn default() -> Self {
+        let mut s = ::std::mem::MaybeUninit::<Self>::uninit();
+        unsafe {
+            ::std::ptr::write_bytes(s.as_mut_ptr(), 0, 1);
+            s.assume_init()
+        }
+    }
+}
+extern "C" {
+    pub fn wg_set_device(dev: *mut wg_device) -> ::std::os::raw::c_int;
+}
+extern "C" {
+    pub fn wg_get_device(
+        dev: *mut *mut wg_device,
+        device_name: *const ::std::os::raw::c_char,
+    ) -> ::std::os::raw::c_int;
+}
+extern "C" {
+    pub fn wg_add_device(device_name: *const ::std::os::raw::c_char) -> ::std::os::raw::c_int;
+}
+extern "C" {
+    pub fn wg_del_device(device_name: *const ::std::os::raw::c_char) -> ::std::os::raw::c_int;
+}
+extern "C" {
+    pub fn wg_free_device(dev: *mut wg_device);
+}
+extern "C" {
+    pub fn wg_list_device_names() -> *mut ::std::os::raw::c_char;
+}
+extern "C" {
+    pub fn wg_key_to_base64(base64: *mut ::std::os::raw::c_char, key: *mut u8);
+}
+extern "C" {
+    pub fn wg_key_from_base64(
+        key: *mut u8,
+        base64: *mut ::std::os::raw::c_char,
+    ) -> ::std::os::raw::c_int;
+}
+extern "C" {
+    pub fn wg_key_is_zero(key: *mut u8) -> bool;
+}
+extern "C" {
+    pub fn wg_generate_public_key(public_key: *mut u8, private_key: *mut u8);
+}
+extern "C" {
+    pub fn wg_generate_private_key(private_key: *mut u8);
+}
+extern "C" {
+    pub fn wg_generate_preshared_key(preshared_key: *mut u8);
+}
diff --git a/wireguard-control-sys/build.rs b/wireguard-control-sys/build.rs
index a63d31f..7a72e9e 100644
--- a/wireguard-control-sys/build.rs
+++ b/wireguard-control-sys/build.rs
@@ -3,21 +3,29 @@ mod linux {
     use std::{env, path::PathBuf};
 
     pub fn build_bindings() {
-        let bindings = bindgen::Builder::default()
-            .rust_target(bindgen::RustTarget::Stable_1_40)
-            .derive_default(true)
-            .header("c/wireguard.h")
-            .impl_debug(true)
-            .allowlist_function("wg_.*")
-            .bitfield_enum("wg_peer_flags")
-            .bitfield_enum("wg_device_flags");
-
-        let bindings = bindings.generate().expect("Unable to generate bindings");
-
         let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
-        bindings
-            .write_to_file(out_path.join("bindings.rs"))
-            .expect("Couldn't write bindings!");
+
+        #[cfg(feature = "buildtime_bindgen")]
+        {
+           let bindings = bindgen::Builder::default()
+                .rust_target(bindgen::RustTarget::Stable_1_40)
+                .derive_default(true)
+                .header("c/wireguard.h")
+                .impl_debug(true)
+                .allowlist_function("wg_.*")
+                .bitfield_enum("wg_peer_flags")
+                .bitfield_enum("wg_device_flags");
+
+            let bindings = bindings.generate().expect("Unable to generate bindings");
+            bindings
+                .write_to_file(out_path.join("bindings.rs"))
+                .expect("Couldn't write bindings!");
+        }
+        #[cfg(not(feature = "buildtime_bindgen"))]
+        {
+            std::fs::copy("bindgen-bindings/bindings.rs", out_path.join("bindings.rs"))
+                .expect("Could not copy bindings to output directory");
+        }
     }
 
     pub fn build_library() {