Debug target triplet resolution

Author: arik-so

scripts/build_individual_libldk.py

@@ -6,6 +6,7 @@
 from script_config import ScriptConfig, BuildConfig
 
 RUSTUP_PATH = os.getenv('HOME') + '/.cargo/bin/rustup'
+RUSTC_PATH = os.getenv('HOME') + '/.cargo/bin/rustc'
 CARGO_PATH = os.getenv('HOME') + '/.cargo/bin/cargo'
 
 
@@ -98,12 +99,16 @@ def run(config: ScriptConfig):
 			shutil.rmtree(cargo_target_directory, ignore_errors=True)
 		subprocess.check_call([CARGO_PATH, 'clean'], cwd=config.LDK_C_BINDINGS_DIRECTORY)
 
+		rust_target_triplet = f'{rust_architecture}-apple-{rust_target_os}'
+
 		print('Rust architecture:', rust_architecture)
 		print('Rust target OS:', rust_target_os)
-		print('Target:', f'{rust_architecture}-apple-{rust_target_os}')
+		print('Target:', rust_target_triplet)
+
+		subprocess.check_call([RUSTC_PATH, '-Z', 'unstable-options', '--print', 'target-spec-json', '--target', rust_target_triplet])
 
 		# cargo build -Z build-std=panic_abort,std --features "std" --target "${RUST_ARCH}-apple-${RUST_TARGET_OS}" $RUST_CONFIGURATION_FLAG
-		build_arguments = [CARGO_PATH, 'build', '-Z', 'build-std=panic_abort,std', '--features', 'std', '--target', f'{rust_architecture}-apple-{rust_target_os}']
+		build_arguments = [CARGO_PATH, 'build', '-Z', 'build-std=panic_abort,std', '--features', 'std', '--target', rust_target_triplet]
 		if config.RUST_CONFIGURATION_FLAG:
 			build_arguments.append(config.RUST_CONFIGURATION_FLAG)
 		subprocess.check_call(