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--- configure.ac
+++ configure.ac
@@ -47,30 +47,13 @@
 
 
 # LUA ----------------------------------------------------
-AC_LANG_PUSH(C)
-AC_ARG_WITH(lua,
-[  --with-lua[[=DIR]] specify the path to the Lua 5.1 include files [[autodetect]]],
-[
-	if test "x$withval" != "x"; then
-		lua_dir="$withval"
-	fi
-],[
-	lua_dir=
-])
-
-FUNGU_SEARCH_HEADER( [lua.h], [$lua_dir /usr/local /usr], [ include/lua5.1 include/lua / ] )
-if test "x$FUNGU_FOUND_HEADER" = "xno"; then
-	PKG_CHECK_MODULES(LUA, [lua >= 5.1],[],[
-		PKG_CHECK_MODULES(LUA, [lua5.1 >= 5.1],[],[
-			AC_MSG_ERROR(Lua 5.1 not found. You can specify its location with [[--with-lua=/path/to/include/lua51]])
+PKG_CHECK_MODULES(LUA, [lua >= 5.1, lua < 5.2],[],[
+	PKG_CHECK_MODULES(LUA, [lua5.1 >= 5.1],[],[
+		PKG_CHECK_MODULES(LUA, [lua51 >= 5.1, lua51 < 5.2],[],[
+			AC_MSG_ERROR(Lua 5.1 not found)
 		])
 	])
-else
-	CFLAGS="$CFLAGS $FUNGU_FOUND_HEADER"
-	CPPFLAGS="$CPPFLAGS $FUNGU_FOUND_HEADER"
-	LDFLAGS="$LDFLAGS -llua5.1"
-fi
-AC_LANG_POP
+])
 
 AC_SUBST(LUA_CFLAGS)
 AC_SUBST(LUA_LIBS)