[Lldb/Lua] Generate Lua Bindings

This patch uses SWIG to generate the Lua bindings for the SB API. It
covers most of the API, but some methods require a type map similar to
Python.

Discussion on the mailing list:
http://lists.llvm.org/pipermail/lldb-dev/2019-December/015812.html

Differential revision: https://reviews.llvm.org/D71235

2 files changed, 7 insertions, 0 deletions

diff --git a/lldb/source/Plugins/ScriptInterpreter/Lua/CMakeLists.txt b/lldb/source/Plugins/ScriptInterpreter/Lua/CMakeLists.txt
index 498bd978395..f5c62ee3a54 100644
--- a/lldb/source/Plugins/ScriptInterpreter/Lua/CMakeLists.txt
+++ b/lldb/source/Plugins/ScriptInterpreter/Lua/CMakeLists.txt
@@ -1,3 +1,5 @@
+find_package(Lua REQUIRED)
+
 add_lldb_library(lldbPluginScriptInterpreterLua PLUGIN
   Lua.cpp
   ScriptInterpreterLua.cpp
diff --git a/lldb/source/Plugins/ScriptInterpreter/Lua/Lua.h b/lldb/source/Plugins/ScriptInterpreter/Lua/Lua.h
index 50b7ade4dc4..073e7e22e7d 100644
--- a/lldb/source/Plugins/ScriptInterpreter/Lua/Lua.h
+++ b/lldb/source/Plugins/ScriptInterpreter/Lua/Lua.h
@@ -16,11 +16,16 @@
 
 namespace lldb_private {
 
+extern "C" {
+int luaopen_lldb(lua_State *L);
+}
+
 class Lua {
 public:
   Lua() : m_lua_state(luaL_newstate()) {
     assert(m_lua_state);
     luaL_openlibs(m_lua_state);
+    luaopen_lldb(m_lua_state);
   }
 
   ~Lua() {