Generate GDExtension interface header and loader from JSON

tools/godotcpp.py

@@ -149,6 +149,11 @@ def scons_emit_files(target, source, env):
             env.Depends(file, profile_filepath)
         files.append(file)
     env["godot_cpp_gen_dir"] = target[0].abspath
+
+    # gdextension_interface.h shouldn't depend on extension_api.json or the build_profile.json.
+    gdextension_interface_header = os.path.join(str(target[0]), "gen", "include", "gdextension_interface.h")
+    env.Ignore(gdextension_interface_header, [source[0], profile_filepath])
+
     return files, source
 
 
@@ -162,6 +167,7 @@ def scons_generate_bindings(target, source, env):
     _generate_bindings(
         api,
         str(source[0]),
+        str(source[1]),
         env["generate_template_get_node"],
         "32" if "32" in env["arch"] else "64",
         env["precision"],
@@ -376,6 +382,7 @@ def options(opts, env):
         )
     )
     opts.Add(BoolVariable("debug_symbols", "Build with debugging symbols", True))
+    opts.Add(BoolVariable("deprecated", "Enable compatibility code for deprecated and removed features", True))
     opts.Add(BoolVariable("dev_build", "Developer build with dev-only debugging code (DEV_ENABLED)", False))
     opts.Add(BoolVariable("verbose", "Enable verbose output for the compilation", False))
 
@@ -488,6 +495,9 @@ def generate(env):
     if env["precision"] == "double":
         env.Append(CPPDEFINES=["REAL_T_IS_DOUBLE"])
 
+    if not env["deprecated"]:
+        env.Append(CPPDEFINES=["DISABLE_DEPRECATED"])
+
     # Allow detecting when building as a GDExtension.
     env.Append(CPPDEFINES=["GDEXTENSION"])
 
@@ -538,8 +548,9 @@ def _godot_cpp(env):
         env.Dir("."),
         [
             api_file,
-            os.path.join(extension_dir, "gdextension_interface.h"),
+            os.path.join(extension_dir, "gdextension_interface.json"),
             "binding_generator.py",
+            "make_interface_header.py",
         ],
     )
     # Forces bindings regeneration.
@@ -559,7 +570,6 @@ def _godot_cpp(env):
     # Includes
     env.AppendUnique(
         CPPPATH=[
-            env.Dir(extension_dir),
             env.Dir("include").srcnode(),
             env.Dir("gen/include"),
         ]