Print expected `os.arch` tuple for current platform in GDExtension error

This also adds `Engine.get_architecture_name()` to get the name of the
CPU architecture the Godot binary was built for.

2 files changed, 38 insertions, 0 deletions

diff --git a/core/config/engine.cpp b/core/config/engine.cpp
index 1a6093869f..e1da9eb44e 100644
--- a/core/config/engine.cpp
+++ b/core/config/engine.cpp
@@ -181,6 +181,42 @@ String Engine::get_license_text() const {
 	return String(GODOT_LICENSE_TEXT);
 }
 
+String Engine::get_architecture_name() const {
+#if defined(__x86_64) || defined(__x86_64__) || defined(__amd64__) || defined(_M_X64)
+	return "x86_64";
+
+#elif defined(__i386) || defined(__i386__) || defined(_M_IX86)
+	return "x86_32";
+
+#elif defined(__aarch64__) || defined(_M_ARM64)
+	return "arm64";
+
+#elif defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7S__)
+	return "armv7";
+
+#elif defined(__riscv)
+#if __riscv_xlen == 8
+	return "rv64";
+#else
+	return "riscv";
+#endif
+
+#elif defined(__powerpc__)
+#if defined(__powerpc64__)
+	return "ppc64";
+#else
+	return "ppc";
+#endif
+
+#elif defined(__wasm__)
+#if defined(__wasm64__)
+	return "wasm64";
+#elif defined(__wasm32__)
+	return "wasm32";
+#endif
+#endif
+}
+
 bool Engine::is_abort_on_gpu_errors_enabled() const {
 	return abort_on_gpu_errors;
 }
diff --git a/core/config/engine.h b/core/config/engine.h
index 68562643e7..649be23717 100644
--- a/core/config/engine.h
+++ b/core/config/engine.h
@@ -142,6 +142,8 @@ public:
 	void set_write_movie_path(const String &p_path);
 	String get_write_movie_path() const;
 
+	String get_architecture_name() const;
+
 	void set_shader_cache_path(const String &p_path);
 	String get_shader_cache_path() const;