[gn] port dcbf0fc (SBLanguages.h python)

Author: nico

llvm/utils/gn/secondary/lldb/include/lldb/API/BUILD.gn

@@ -1,11 +1,10 @@
-import("//lldb/utils/TableGen/lldb_tablegen.gni")
-
-lldb_tablegen("SBLanguages") {
-  args = [ "-gen-lldb-sbapi-dwarf-enum" ]
-
-  # See discussion on https://github.com/llvm/llvm-project/pull/89981 for
-  # why this runs tblgen on a .def file.
-  td_file = "//llvm/include/llvm/BinaryFormat/Dwarf.def"
-  output_name = "SBLanguages.h"
+action("SBLanguages") {
+  script = "//lldb/scripts/generate-sbapi-dwarf-enum.py"
+  outputs = [ "$target_gen_dir/SBLanguages.h" ]
+  sources = [ "//llvm/include/llvm/BinaryFormat/Dwarf.def" ]
+  args = [
+    rebase_path(sources[0], root_build_dir),
+    "-o",
+    rebase_path(outputs[0], root_build_dir),
+  ]
 }
-

llvm/utils/gn/secondary/lldb/utils/TableGen/BUILD.gn

@@ -6,7 +6,6 @@ executable("lldb-tblgen") {
   sources = [
     "LLDBOptionDefEmitter.cpp",
     "LLDBPropertyDefEmitter.cpp",
-    "LLDBSBAPIDWARFEnum.cpp",
     "LLDBTableGen.cpp",
     "LLDBTableGenUtils.cpp",
   ]