refactor(c/sedona-proj,c/sedona-tg): Remove build-time generated headers (#149)

Author: paleolimbot

Cargo.lock

@@ -27,7 +27,6 @@ edition.workspace = true
 rust-version.workspace = true
 
 [build-dependencies]
-bindgen = "0.71.0"
 cc = { version = "1" }
 
 [dev-dependencies]

c/sedona-proj/Cargo.toml

@@ -14,66 +14,9 @@
 // KIND, either express or implied.  See the License for the
 // specific language governing permissions and limitations
 // under the License.
-use std::{env, path::PathBuf};
-
-// Since relative path differs between build.rs and a file under `src/`, use the
-// absolute path.
-fn get_absolute_path(path: String) -> PathBuf {
-    std::path::absolute(PathBuf::from(path)).expect("Failed to get absolute path")
-}
-
-fn configure_bindings_path(prebuilt_bindings_path: String) -> (PathBuf, bool) {
-    // If SEDONA_PROJ_BINDINGS_OUTPUT_PATH is set, honor the explicit output
-    // path to regenerate bindings.
-    if let Ok(output_path) = env::var("SEDONA_PROJ_BINDINGS_OUTPUT_PATH") {
-        let output_path = get_absolute_path(output_path);
-        if let Some(output_dir) = output_path.parent() {
-            std::fs::create_dir_all(output_dir).expect("Failed to create parent dirs");
-        }
-        return (output_path, true);
-    }
-
-    // If a prebuilt bindings exists, use it and skip bindgen.
-    let prebuilt_bindings_path = get_absolute_path(prebuilt_bindings_path);
-    if prebuilt_bindings_path.exists() {
-        return (prebuilt_bindings_path, false);
-    }
-
-    let output_dir = env::var("OUT_DIR").unwrap();
-    let output_path = PathBuf::from(output_dir).join("bindings.rs");
-
-    (output_path, true)
-}
 
 fn main() {
     println!("cargo:rerun-if-changed=src/proj_dyn.c");
-    println!("cargo:rerun-if-env-changed=SEDONA_PROJ_BINDINGS_OUTPUT_PATH");
 
     cc::Build::new().file("src/proj_dyn.c").compile("proj_dyn");
-
-    let target_triple = std::env::var("TARGET").unwrap();
-    let prebuilt_bindings_path = format!("src/bindings/{target_triple}.rs");
-
-    let (bindings_path, generate_bindings) = configure_bindings_path(prebuilt_bindings_path);
-
-    println!(
-        "cargo::rustc-env=BINDINGS_PATH={}",
-        bindings_path.to_string_lossy()
-    );
-
-    if !generate_bindings {
-        return;
-    }
-
-    let bindings = bindgen::Builder::default()
-        .header("src/proj_dyn.h")
-        .generate_comments(false)
-        .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
-        .generate()
-        .expect("Unable to generate bindings");
-
-    // Write the bindings to the $OUT_DIR/bindings.rs file.
-    bindings
-        .write_to_file(&bindings_path)
-        .expect("Couldn't write bindings!");
 }