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, 4 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 068670b..99b2afd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,4 +13,8 @@ build = "build.rs"
 readme = "README.md"
 
 [build-dependencies]
+bindgen = { version = "0.55.1", optional = true }
 cc = "1.0"
+
+[features]
+default = []