build & link with luajit instead of lua5.1

1 files changed, 99 insertions, 0 deletions

diff --git a/libs/luajit-cmake/lua2c.lua b/libs/luajit-cmake/lua2c.lua
new file mode 100644
index 0000000..cc9a902
--- /dev/null
+++ b/libs/luajit-cmake/lua2c.lua
@@ -0,0 +1,99 @@
+--[[
+  Copyright 2014 The Luvit Authors. All Rights Reserved.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+s
+]]
+local src, gen = ...
+local _, jit = pcall(require, "jit") if jit and jit.off then jit.off() end
+
+local chunk = assert(loadfile(src, nil, '@'..src))
+local bytecode = string.dump(chunk)
+
+local function basename(name)
+   local base = name
+   if base:match "[/\\]" then
+      base = name:match("^.*[/\\](.*)$")
+   end
+   base = base:gsub("^%.", "_")
+   if base:match "%." then
+      base = base:match("^(.*)%."):gsub("%.", "_")
+   end
+   return base
+end
+
+local function escapefn(name)
+   return '"'..
+      name:gsub('\\', '\\\\')
+          :gsub('\n', '\\n')
+          :gsub('\r', '\\r')
+          :gsub('"', '\\"')..'"'
+end
+
+local function write_chunk(s)
+   local t = { "{\n       " };
+   local cc = 7
+   for i = 1, #s do
+      local c = string.byte(s, i, i)
+      local ss = (" 0x%X"):format(c)
+      if cc + #ss > 77 then
+         t[#t+1] = "\n       "
+         t[#t+1] = ss
+         cc = 7 + #ss
+         if i ~= #s then
+            t[#t+1] = ","
+            cc = cc + 1
+         end
+      else
+         t[#t+1] = ss
+         cc = cc + #ss
+         if i ~= #s then
+            t[#t+1] = ","
+            cc = cc + 1
+         end
+      end
+   end
+   t[#t+1] = "\n    }"
+   return (table.concat(t))
+end
+
+local function W(...)
+   io.write(...)
+   return W
+end
+
+io.output(gen)
+W [[
+/* generated source for Lua codes */
+
+#ifndef LUA_LIB
+# define LUA_LIB
+#endif
+#include <lua.h>
+#include <lauxlib.h>
+
+LUALIB_API int luaopen_]](basename(src))[[(lua_State *L) {
+    size_t len = ]](#bytecode)[[;
+    const char chunk[] = ]](write_chunk(bytecode))[[;
+
+    if (luaL_loadbuffer(L, chunk, len, ]](escapefn(src))[[) != 0)
+        lua_error(L);
+    lua_insert(L, 1);
+    lua_call(L, lua_gettop(L)-1, LUA_MULTRET);
+    return lua_gettop(L);
+}
+
+]]
+io.close()
+
+