Make bindings be dynamically generated at compile time

.gitignore

@@ -9,3 +9,4 @@ Cargo.lock
 # These are backup files generated by rustfmt
 **/*.rs.bk
 .idea/
+lvgl-sys/src/lib.rs

lvgl-sys/Cargo.toml

@@ -15,3 +15,4 @@ name = "lvgl_sys"
 
 [build-dependencies]
 cc = "1.0.50"
+bindgen = "0.53.2"

lvgl-sys/build.rs

@@ -1,5 +1,6 @@
 use std::{env, path::PathBuf};
 use cc::Build;
+use bindgen;
 
 fn main() {
     let project_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap())
@@ -9,6 +10,9 @@ fn main() {
     let vendor = root_dir.join("vendor");
     let src = vendor.join("lvgl").join("src");
 
+    // TODO: Make it configurable! Needs to be linked to final proj defs, define as an env var.
+    let lvgl_config_path = vendor.join("lv_sim_eclipse_sdl");
+
     let mut cfg = Build::new();
 
     cfg.file(src.parent().unwrap().join("lvgl.h"))
@@ -16,8 +20,13 @@ fn main() {
         .include(&src)
         .warnings(false);
 
-    // TODO: Make it configurable! Needs to be linked to final proj defs, define as an env var.
-    cfg.include(vendor.join("lv_sim_eclipse_sdl"));
+    cfg.include(&lvgl_config_path);
 
     cfg.compile("lvgl");
+
+    let cc_args = ["-DLV_CONF_INCLUDE_SIMPLE=1", "-I", lvgl_config_path.to_str().unwrap()];
+    let _bindings = bindgen::Builder::default()
+        .header(src.parent().unwrap().join("lvgl.h").to_str().unwrap())
+        .clang_args(&cc_args)
+        .generate().expect("Unable to generate bindings");
 }

lvgl-sys/src/lib.rs

@@ -1,7 +0,0 @@
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() {
-        assert_eq!(2 + 2, 4);
-    }
-}