From 25f510dd92d090777ed74f989db46fd5c45d4b1b Mon Sep 17 00:00:00 2001
From: Christian Goll <cgoll@suse.de>
Date: Fri, 29 Nov 2019 14:09:50 +0100
Subject: [PATCH] add explicit lua5.3 support

---
 config/ac_lua_extensions.m4 |  2 +-
 configure.ac                | 21 ++++++++++++---------
 2 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/config/ac_lua_extensions.m4 b/config/ac_lua_extensions.m4
index 4dbfb7b1..94215887 100644
--- a/config/ac_lua_extensions.m4
+++ b/config/ac_lua_extensions.m4
@@ -17,5 +17,5 @@ AC_DEFUN([AC_LUA_EXTENSIONS],
          ;;
      esac ]
   )
-  AC_MSG_RESULT(${ac_with_lua_extensions=yes})
+  AC_MSG_RESULT(${ac_with_lua_extensions=no})
 ])
diff --git a/configure.ac b/configure.ac
index 73954fab..58c6684d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -208,20 +208,23 @@ AM_CONDITIONAL(WITH_CPLUSPLUS_EXTENSIONS, [test "$ac_with_cplusplus_extensions"
 AC_JAVA_EXTENSIONS
 AM_CONDITIONAL(WITH_JAVA_EXTENSIONS, [test "$ac_with_java_extensions" = "yes"])
 
-
+#
+# Check for lua, which means create commanline conditional
+#
+AC_LUA_EXTENSIONS
+AM_CONDITIONAL(WITH_LUA_EXTENSIONS, [test "$ac_with_lua_extensions" = "yes"])
 #
 # expand lua
 #
-AX_PROG_LUA
+if test "x$ac_with_lua_extensions" = "xyes" ; then
+# beware, the ACTION-IF-NOT-FOUND is not working
+AX_PROG_LUA([5.3],,,:)
+# The test of headers fail, if LUA_VERSION is empty
+if test LUA_VERSION ; then
 AX_LUA_HEADERS
 AX_LUA_LIBS
-
-#
-# Check for lua
-#
-
-AC_LUA_EXTENSIONS
-AM_CONDITIONAL(WITH_LUA_EXTENSIONS, [test "$ac_with_lua_extensions" = "yes"])
+fi
+fi
 
 ##
 # Checks for typedefs, structures, and compiler characteristics.