From d703310749312b0b822af0cb5ab3947dc5a53696 Mon Sep 17 00:00:00 2001
From: Peter Wu <peter@lekensteyn.nl>
Date: Thu, 6 Sep 2018 16:18:09 +0200
Subject: [PATCH] cmake: optionally require Lua 5.1 or newer

doc/README.wslua reports support for 5.1 and 5.2 only. Even RHEL6 ships
with Lua 5.1, so it makes not sense to maintain support for Lua 5.0.

Change-Id: I34a8084c7fba19d631b90ce5d5a28198be6a7850
Reviewed-on: https://code.wireshark.org/review/29448
Petri-Dish: Peter Wu <peter@lekensteyn.nl>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>
---
 CMakeLists.txt              | 1 +
 cmake/modules/FindLUA.cmake | 6 ++----
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index fd1ce5bae4..b12e373df4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1005,6 +1005,7 @@ endif()
 # Embedded Lua interpreter
 if(ENABLE_LUA)
 	set(PACKAGELIST ${PACKAGELIST} LUA)
+	set(LUA_OPTIONS "5.1")
 endif()
 
 if(ENABLE_NETLINK)
diff --git a/cmake/modules/FindLUA.cmake b/cmake/modules/FindLUA.cmake
index 9cc61d0606..2fc589f417 100644
--- a/cmake/modules/FindLUA.cmake
+++ b/cmake/modules/FindLUA.cmake
@@ -19,7 +19,7 @@ FindWSWinLibs("lua5*" "LUA_HINTS")
 
 if(NOT WIN32)
   find_package(PkgConfig)
-  pkg_search_module(LUA lua5.2 lua-5.2 lua52 lua5.1 lua-5.1 lua51 lua5.0 lua-5.0 lua50)
+  pkg_search_module(LUA lua5.2 lua-5.2 lua52 lua5.1 lua-5.1 lua51)
   if(NOT LUA_FOUND)
       pkg_search_module(LUA "lua<=5.2.99")
   endif()
@@ -47,8 +47,6 @@ if(LUA_INCLUDE_DIR AND EXISTS "${LUA_INCLUDE_DIR}/lua.h")
   if (LUA_VERSION_NUM)
     string(REGEX REPLACE "^#define[ \t]+LUA_VERSION_NUM[ \t]+([0-9]+)" "\\1"
       LUA_VERSION_NUM "${LUA_VERSION_NUM}")
-  else()
-    set( LUA_VERSION_NUM "500")
   endif()
 endif()
 string( REGEX REPLACE ".*[/\\]lua(.+)$" "\\1" LUA_INC_SUFFIX "${LUA_INCLUDE_DIR}" )
@@ -74,7 +72,7 @@ FIND_LIBRARY(LUA_LIBRARY
     /opt
 )
 
-# Lua 5.3 is not supported, only 5.0/5.1/5.2 are (due to bitops problem)
+# Lua 5.3 is not supported, only 5.1/5.2 are (due to bitops problem)
 if(LUA_VERSION_NUM GREATER 502)
   set(LUA_VERSION_NUM)
 endif()