Add feature to generate bindings during build

This patch adds the bindgen feature to the crate that allows users to
re-generate the bindings, including layout tests, during the build
instead of using the pre-generated bindings.  Per default, this feature
is disabled.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
index a179da8..81a98bc 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,10 +2,15 @@
 #![allow(non_camel_case_types)]
 #![allow(non_snake_case)]
 
+#[cfg(not(feature = "bindgen"))]
 mod ffi;
 
+#[cfg(not(feature = "bindgen"))]
 pub use crate::ffi::*;
 
+#[cfg(feature = "bindgen")]
+include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
+
 #[cfg(test)]
 mod tests {
     use super::*;