From aba897414780a8b6933a82d429aced30849cc1de Mon Sep 17 00:00:00 2001
From: Dennis Schridde <devurandom@gmx.net>
Date: Tue, 18 Sep 2012 15:20:25 +0200
Subject: [PATCH 1/2] Fix compilation with Lua 5.2 (issue #146)

Use Lua 5.2 API without compatibility code
---
 configure.ac | 27 ---------------------------
 inotify.c    |  2 +-
 lsyncd.c     |  7 ++++---
 lsyncd.h     |  2 --
 4 files changed, 5 insertions(+), 33 deletions(-)

diff --git a/configure.ac b/configure.ac
index c95a496..20f5c08 100644
--- a/configure.ac
+++ b/configure.ac
@@ -68,33 +68,6 @@ else
 	fi
 fi
 
-_LIBS="${LIBS}"
-_CFLAGS="${CFLAGS}"
-_CPPFLAGS="${CPPFLAGS}"
-LIBS="${LIBS} ${LUA_LIBS}"
-CFLAGS="${CFLAGS} ${LUA_CFLAGS}"
-CPPFLAGS="${CPPFLAGS} ${LUA_CFLAGS}"
-
-AC_MSG_CHECKING([whether Lua library was compiled with compat support])
-AC_LINK_IFELSE(
-	[AC_LANG_PROGRAM([
-			#define LUA_COMPAT_ALL
-			#include <lauxlib.h>
-		],[luaL_register(0,0,0);])],
-	[lua_compat_support=yes],
-	[lua_compat_support=no]
-)
-AC_MSG_RESULT([${lua_compat_support}])
-
-if test "x${lua_compat_support}" = xno ; then
-	AC_MSG_ERROR([Lua library needs to be compiled with compat support])
-fi
-
-LIBS="${_LIBS}"
-CFLAGS="${_CFLAGS}"
-CPPFLAGS="${_CPPFLAGS}"
-unset _LIBS _CFLAGS _CPPFLAGS
-
 AX_SUBST_L([LUA_CFLAGS], [LUA_LIBS], [LUA], [LUAC])
 
 
diff --git a/inotify.c b/inotify.c
index 335225a..b489dad 100644
--- a/inotify.c
+++ b/inotify.c
@@ -499,7 +499,7 @@ inotify_ready(
 extern void
 register_inotify( lua_State *L )
 {
-	luaL_register( L, LSYNCD_INOTIFYLIBNAME, linotfylib );
+	luaL_newlib( L, linotfylib );
 }
 
 
diff --git a/lsyncd.c b/lsyncd.c
index 0e230c7..877589a 100644
--- a/lsyncd.c
+++ b/lsyncd.c
@@ -1086,13 +1086,14 @@ l_exec( lua_State *L )
 		{
 			int tlen;
 			int it;
-			lua_checkstack( L, lua_gettop( L ) + lua_objlen( L, i ) + 1 );
+
+			lua_checkstack( L, lua_gettop( L ) + lua_rawlen( L, i ) + 1 );
 
 			// moves table to top of stack
 			lua_pushvalue( L, i );
 			lua_remove( L, i );
 			argc--;
-			tlen = lua_objlen( L, -1 );
+			tlen = lua_rawlen( L, -1 );
 
 			for( it = 1; it <= tlen; it++ )
 			{
@@ -1850,7 +1851,7 @@ l_jiffies_le(lua_State *L)
 void
 register_lsyncd( lua_State *L )
 {
-	luaL_register( L, LSYNCD_LIBNAME, lsyncdlib );
+	luaL_newlib( L, lsyncdlib );
 	lua_setglobal( L, LSYNCD_LIBNAME );
 
 	// creates the metatable for the jiffies ( timestamps ) userdata
diff --git a/lsyncd.h b/lsyncd.h
index fa598a7..90b878e 100644
--- a/lsyncd.h
+++ b/lsyncd.h
@@ -16,8 +16,6 @@
 #define _XOPEN_SOURCE 700
 #define _DARWIN_C_SOURCE 1
 
-#define LUA_COMPAT_ALL
-
 // includes needed for headerfile
 #include "config.h"
 
-- 
1.8.0

From 56d6897a2a9ff8f9aa354d4350970dbb8aa990a1 Mon Sep 17 00:00:00 2001
From: Dennis Schridde <devurandom@gmx.net>
Date: Tue, 18 Sep 2012 15:57:41 +0200
Subject: [PATCH 2/2] Lua 5.1 compatibility fallbacks

---
 inotify.c | 6 ++++++
 lsyncd.c  | 9 +++++++++
 2 files changed, 15 insertions(+)

diff --git a/inotify.c b/inotify.c
index b489dad..cc9cd31 100644
--- a/inotify.c
+++ b/inotify.c
@@ -39,6 +39,12 @@
 #include <lualib.h>
 #include <lauxlib.h>
 
+/*
+| Lua 5.1 compatibility fallbacks
+*/
+#if LUA_VERSION_NUM < 502
+#   define luaL_newlib(L,l) (lua_newtable(L), luaL_register(L,NULL,l))
+#endif
 
 /*
 | Event types.
diff --git a/lsyncd.c b/lsyncd.c
index 877589a..678ce13 100644
--- a/lsyncd.c
+++ b/lsyncd.c
@@ -56,6 +56,15 @@ extern const char defaults_out[];
 extern size_t defaults_size;
 
 /*
+| Lua 5.1 compatibility fallbacks
+*/
+#if LUA_VERSION_NUM < 502
+/* lua_rawlen: Not entirely correct, but should work anyway */
+#	define lua_rawlen lua_objlen
+#	define luaL_newlib(L,l) (lua_newtable(L), luaL_register(L,NULL,l))
+#endif
+
+/*
 | Makes sure there is one file system monitor.
 */
 #ifndef LSYNCD_WITH_INOTIFY
-- 
1.8.0