[lldb] Swift/downstream support for SBLanguages & SWIG

Author: JDevlieghere

lldb/bindings/prepare_bindings.py

@@ -135,6 +135,11 @@ def process_args(args):
                 os.path.dirname(os.path.realpath(__file__)),
                 os.path.pardir)),
         help="Specifies the LLDB source root directory.")
+    parser.add_argument(
+        "--build-root",
+        "--buildRoot",
+        "-b",
+        help="Specifies the LLDB build root directory.")
     parser.add_argument(
         "--swig-executable",
         "--swigExecutable",

lldb/bindings/python/CMakeLists.txt

@@ -16,6 +16,7 @@ add_custom_command(
   COMMAND ${Python3_EXECUTABLE} ${LLDB_SOURCE_DIR}/bindings/prepare_bindings.py
       ${framework_arg}
       --srcRoot=${LLDB_SOURCE_DIR}
+      --buildRoot=${LLDB_BINARY_DIR}
       --targetDir=${CMAKE_CURRENT_BINARY_DIR}
       --cfgBldDir=${CMAKE_CURRENT_BINARY_DIR}
       --prefix=${CMAKE_BINARY_DIR}

lldb/bindings/python/prepare_binding_python.py

@@ -209,6 +209,7 @@ def do_swig_rebuild(options, dependency_file, config_build_dir, settings):
             "-features", "autodoc",
             "-threads",
             "-I" + os.path.normpath(os.path.join(options.src_root, "include")),
+            "-I" + os.path.normpath(os.path.join(options.build_root, "include")),
             "-I" + bindings_dir,
             "-I" + bindings_python_dir,
             "-D__STDC_LIMIT_MACROS",