chore(ffi): move header files generation to the target directory

.gitignore

@@ -46,9 +46,5 @@ cobertura.xml
 # Python
 __pycache__/
 
-# Generated FFI headers (produced by build.rs via cbindgen)
-dash-spv-ffi/include/
-key-wallet-ffi/include/
-
 # Build scripts artifacts
 *.log

dash-spv-ffi/build.rs

@@ -1,27 +1,32 @@
-use std::env;
-use std::path::PathBuf;
+use std::path::Path;
+use std::{env, fs};
 
 fn main() {
+    let crate_name = env::var("CARGO_PKG_NAME").unwrap();
     let crate_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
-    let output_path = PathBuf::from(&crate_dir).join("include");
+    let out_dir = env::var("OUT_DIR").unwrap();
 
-    std::fs::create_dir_all(&output_path).unwrap();
-
-    // Ensure the build script reruns when header-relevant files change
     println!("cargo:rerun-if-changed=cbindgen.toml");
-    println!("cargo:rerun-if-changed=src");
-
-    let config = cbindgen::Config::from_file("cbindgen.toml")
-        .expect("cbindgen config missing or invalid: cbindgen.toml");
-
-    match cbindgen::Builder::new().with_crate(&crate_dir).with_config(config).generate() {
-        Ok(bindings) => {
-            bindings.write_to_file(output_path.join("dash_spv_ffi.h"));
-            println!("cargo:warning=Generated C header at {:?}", output_path);
-        }
-        Err(e) => {
-            // Fail the build to avoid shipping stale headers
-            panic!("Failed to generate C header via cbindgen: {}", e);
-        }
-    }
+    println!("cargo:rerun-if-changed=src/");
+
+    let target_dir = Path::new(&out_dir)
+        .ancestors()
+        .nth(3) // This line moves up to the target/<PROFILE> directory
+        .expect("Failed to find target dir");
+
+    let include_dir = target_dir.join("include").join(&crate_name);
+
+    fs::create_dir_all(&include_dir).unwrap();
+
+    let output_path = include_dir.join(format!("{}.h", &crate_name));
+
+    let config_path = Path::new(&crate_dir).join("cbindgen.toml");
+    let config = cbindgen::Config::from_file(&config_path).expect("Failed to read cbindgen.toml");
+
+    cbindgen::Builder::new()
+        .with_crate(&crate_dir)
+        .with_config(config)
+        .generate()
+        .expect("Unable to generate bindings")
+        .write_to_file(&output_path);
 }

dash-spv-ffi/cbindgen.toml

@@ -1,11 +1,8 @@
-# cbindgen configuration for dash-spv-ffi
-
 language = "C"
 header = "/* dash-spv-ffi C bindings - Auto-generated by cbindgen */"
 include_guard = "DASH_SPV_FFI_H"
 autogen_warning = "/* Warning: This file is auto-generated by cbindgen. Do not modify manually. */"
 include_version = true
-namespace = "dash_spv_ffi"
 cpp_compat = true
 
 [export]

key-wallet-ffi/IMPORT_WALLET_FFI.md

@@ -41,7 +41,7 @@ The function may set the following error codes:
 ## Usage Example
 
 ```c
-#include "key_wallet_ffi.h"
+#include "key-wallet-ffi.h"
 
 // Load wallet bytes from file or network
 uint8_t *wallet_bytes = load_wallet_bytes();

key-wallet-ffi/build.rs

@@ -1,41 +1,32 @@
-// Build script for key-wallet-ffi
-// Generates C header file using cbindgen
-
-use std::env;
-use std::path::PathBuf;
+use std::path::Path;
+use std::{env, fs};
 
 fn main() {
-    // Add platform-specific linking flags
-    let target_os = env::var("CARGO_CFG_TARGET_OS").unwrap_or_default();
-
-    match target_os.as_str() {
-        "ios" => {
-            println!("cargo:rustc-link-lib=framework=Security");
-        }
-        "macos" => {
-            println!("cargo:rustc-link-lib=framework=Security");
-        }
-        _ => {}
-    }
-
-    // Generate C header file using cbindgen
+    let crate_name = env::var("CARGO_PKG_NAME").unwrap();
     let crate_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
-    let output_path = PathBuf::from(&crate_dir).join("include/key_wallet_ffi.h");
+    let out_dir = env::var("OUT_DIR").unwrap();
+
+    println!("cargo:rerun-if-changed=cbindgen.toml");
+    println!("cargo:rerun-if-changed=src/");
+
+    let target_dir = Path::new(&out_dir)
+        .ancestors()
+        .nth(3) // This line moves up to the target/<PROFILE> directory
+        .expect("Failed to find target dir");
+
+    let include_dir = target_dir.join("include").join(&crate_name);
+
+    fs::create_dir_all(&include_dir).unwrap();
+
+    let output_path = include_dir.join(format!("{}.h", &crate_name));
 
-    // Create include directory if it doesn't exist
-    std::fs::create_dir_all(output_path.parent().unwrap()).ok();
+    let config_path = Path::new(&crate_dir).join("cbindgen.toml");
+    let config = cbindgen::Config::from_file(&config_path).expect("Failed to read cbindgen.toml");
 
-    match cbindgen::Builder::new()
+    cbindgen::Builder::new()
         .with_crate(&crate_dir)
-        .with_config(cbindgen::Config::from_file("cbindgen.toml").unwrap_or_default())
+        .with_config(config)
         .generate()
-    {
-        Ok(bindings) => {
-            bindings.write_to_file(&output_path);
-            println!("cargo:warning=Generated C header at {:?}", output_path);
-        }
-        Err(e) => {
-            panic!("Failed to generate C header via cbindgen: {}", e);
-        }
-    }
+        .expect("Unable to generate bindings")
+        .write_to_file(&output_path);
 }

key-wallet-ffi/cbindgen.toml

@@ -1,6 +1,3 @@
-# cbindgen configuration for key-wallet-ffi
-# This file configures how cbindgen generates the C header from Rust code
-
 language = "C"
 header = """/**
  * Key Wallet FFI - C Header File
@@ -15,7 +12,6 @@ header = """/**
 include_guard = "KEY_WALLET_FFI_H"
 autogen_warning = "/* Warning: This file is auto-generated by cbindgen. Do not modify manually. */"
 include_version = true
-cpp_compat = true
 usize_is_size_t = true
 no_includes = false
 sys_includes = ["stdint.h", "stddef.h", "stdbool.h"]