From 07d09b78693e2add0b5e7a2ec1234eab2200f2fa Mon Sep 17 00:00:00 2001
From: Michael Jerris <mike@jerris.com>
Date: Tue, 20 Jan 2015 11:48:00 -0500
Subject: [PATCH] FS-7180: add --enable-sytem-lua configure arg to allow
 building mod_lua against system lua and allow mod_lua to build against lua
 5.1 or 5.2

---
 configure.ac                               |  3 +++
 src/mod/languages/mod_lua/Makefile.am      | 26 +++++++++-------------
 src/mod/languages/mod_lua/freeswitch_lua.h |  3 +++
 3 files changed, 17 insertions(+), 15 deletions(-)

diff --git a/configure.ac b/configure.ac
index 160c79f72a..0c30551993 100644
--- a/configure.ac
+++ b/configure.ac
@@ -517,6 +517,9 @@ AC_SUBST(SYS_XMLRPC_CFLAGS)
 AC_SUBST(SYS_XMLRPC_LDFLAGS)
 AM_CONDITIONAL([SYSTEM_XMLRPCC],[test "${enable_xmlrpcc}" = "yes"])
 
+AC_ARG_ENABLE([system-lua],[AS_HELP_STRING([--enable-system-lua],[use system lib for lua])],,[enable_system_lua="no"])
+AM_CONDITIONAL([SYSTEM_LUA],[test "${enable_system_lua}" = "yes"])
+
 AC_ARG_ENABLE(srtp,
 [AC_HELP_STRING([--disable-srtp],[build without srtp support])],[enable_srtp="$enableval"],[enable_srtp="yes"])
 
diff --git a/src/mod/languages/mod_lua/Makefile.am b/src/mod/languages/mod_lua/Makefile.am
index 2a0b51e933..57a2c6b213 100644
--- a/src/mod/languages/mod_lua/Makefile.am
+++ b/src/mod/languages/mod_lua/Makefile.am
@@ -3,26 +3,22 @@ include $(top_srcdir)/build/modmake.rulesam
 
 MODNAME=mod_lua
 
-LUA_DIR=$(switch_srcdir)/src/mod/languages/mod_lua/lua
-LIBLUA_A=$(LUA_DIR)/liblua.a
-
 AM_CFLAGS += $(CFLAGS) -D_GNU_SOURCE
 mod_LTLIBRARIES = mod_lua.la
-mod_lua_la_SOURCES = mod_lua.cpp freeswitch_lua.cpp mod_lua_wrap.cpp lua/lapi.c lua/lcode.c lua/lctype.c lua/ldebug.c lua/ldo.c lua/ldump.c lua/lfunc.c lua/lgc.c lua/llex.c lua/lmem.c lua/lobject.c lua/lopcodes.c lua/lparser.c lua/lstate.c lua/lstring.c lua/ltable.c lua/ltm.c lua/lundump.c lua/lvm.c lua/lzio.c lua/lauxlib.c lua/lbaselib.c lua/lbitlib.c lua/lcorolib.c lua/ldblib.c lua/liolib.c lua/lmathlib.c lua/loslib.c lua/lstrlib.c lua/ltablib.c lua/loadlib.c lua/linit.c
+mod_lua_la_SOURCES = mod_lua.cpp freeswitch_lua.cpp mod_lua_wrap.cpp
+
+if SYSTEM_LUA
+mod_lua_la_CXXFLAGS = $(AM_CPPFLAGS) $(CPPFLAGS)
+mod_lua_la_CFLAGS   = $(AM_CPPFLAGS) $(CPPFLAGS)
+else
+mod_lua_la_SOURCES += lua/lapi.c lua/lcode.c lua/lctype.c lua/ldebug.c lua/ldo.c lua/ldump.c lua/lfunc.c lua/lgc.c lua/llex.c lua/lmem.c lua/lobject.c lua/lopcodes.c lua/lparser.c lua/lstate.c lua/lstring.c lua/ltable.c lua/ltm.c lua/lundump.c lua/lvm.c lua/lzio.c lua/lauxlib.c lua/lbaselib.c lua/lbitlib.c lua/lcorolib.c lua/ldblib.c lua/liolib.c lua/lmathlib.c lua/loslib.c lua/lstrlib.c lua/ltablib.c lua/loadlib.c lua/linit.c
+LUA_DIR=$(switch_srcdir)/src/mod/languages/mod_lua/lua
 mod_lua_la_CXXFLAGS = -I$(LUA_DIR) $(AM_CPPFLAGS) -DLUA_USE_LINUX
 mod_lua_la_CFLAGS = -I$(LUA_DIR) $(AM_CPPFLAGS) -DLUA_USE_LINUX
-mod_lua_la_LIBADD = $(switch_builddir)/libfreeswitch.la 
-mod_lua_la_LDFLAGS = -avoid-version -module -no-undefined -shared -lm $(AM_LDFLAGS) $(SOLINK) #$(LIBLUA_A)
+endif
 
-#BUILT_SOURCES = $(LIBLUA_A)
-#$(mod_lua_la_SOURCES) : $(BUILT_SOURCES)
-#
-#$(LIBLUA_A):
-#	cd $(LUA_DIR) && $(MAKE) CC="$(CC)" AR="$(AR) rcu" CFLAGS="$(AM_CFLAGS) -DLUA_USE_LINUX -w" liblua.a
-#luaclean:
-#	cd $(LUA_DIR) && $(MAKE) clean
-#
-#allclean: clean luaclean
+mod_lua_la_LIBADD = $(switch_builddir)/libfreeswitch.la 
+mod_lua_la_LDFLAGS = -avoid-version -module -no-undefined -shared -lm -llua $(AM_LDFLAGS) $(SOLINK)
 
 reswig: swigclean lua_wrap
 
diff --git a/src/mod/languages/mod_lua/freeswitch_lua.h b/src/mod/languages/mod_lua/freeswitch_lua.h
index a1a289a70b..780fc2e545 100644
--- a/src/mod/languages/mod_lua/freeswitch_lua.h
+++ b/src/mod/languages/mod_lua/freeswitch_lua.h
@@ -9,6 +9,9 @@ extern "C" {
 }
 #include <switch_cpp.h>
 
+#ifndef lua_pushglobaltable
+#define lua_pushglobaltable(L) lua_pushvalue(L,LUA_GLOBALSINDEX)
+#endif
 
 typedef struct{
   lua_State* L;