Merge remote-tracking branch 'procdump/target_bindgen'

libuci-sys/build.rs

@@ -17,6 +17,10 @@ fn main() {
     }
 
     let mut builder = bindgen::Builder::default();
+    // if BINDGEN_TARGET is set it instructs the target bindgen is built for
+    if let Ok(bindgen_target) = env::var("BINDGEN_TARGET") {
+        builder = builder.clang_arg(format!("--target={}", bindgen_target));
+    }
 
     // if UCI_DIR is present, use it to look for the header file and precompiled libs
     if let Ok(uci_dir) = env::var("UCI_DIR") {

libuci-sys/src/lib.rs

@@ -15,6 +15,8 @@
 //! If building inside the OpenWRT SDK with OpenWRT's UCI package set the environment variable
 //! `UCI_DIR=$(STAGING_DIR)/usr` using the corresponding Makefile.
 //! rust-uci will automatically use the headers and libraries for the target system.
+//! When crosscompiling it may be useful to set BINDGEN_TARGET to instruct what
+//! target bindgen is built for.
 //!
 //! ## Vendored
 //!