From 1331a867a7c3083e1824dc92b9fca8171a677d8a Mon Sep 17 00:00:00 2001
From: Kim Alvefur <zash@zash.se>
Date: Thu, 29 Nov 2018 16:19:39 +0100
Subject: configure: Recognise 5.4 as a valid Lua version

---
 configure | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 92f078f4..c484a280 100755
--- a/configure
+++ b/configure
@@ -237,7 +237,7 @@ do
    --lua-version|--with-lua-version)
       [ -n "$value" ] || die "Missing value in flag $key."
       LUA_VERSION="$value"
-      [ "$LUA_VERSION" = "5.1" ] || [ "$LUA_VERSION" = "5.2" ] || [ "$LUA_VERSION" = "5.3" ] || die "Invalid Lua version in flag $key."
+      [ "$LUA_VERSION" = "5.1" ] || [ "$LUA_VERSION" = "5.2" ] || [ "$LUA_VERSION" = "5.3" ] || [ "$LUA_VERSION" = "5.4" ] || die "Invalid Lua version in flag $key."
       LUA_VERSION_SET=yes
       ;;
    --with-lua)
@@ -340,7 +340,7 @@ then
 fi
 
 detect_lua_version() {
-   detected_lua=$("$1" -e 'print(_VERSION:match(" (5%.[123])$"))' 2> /dev/null)
+   detected_lua=$("$1" -e 'print(_VERSION:match(" (5%.[1234])$"))' 2> /dev/null)
    if [ "$detected_lua" != "nil" ]
    then
       if [ "$LUA_VERSION_SET" != "yes" ]
@@ -403,10 +403,14 @@ then
    elif [ "$LUA_VERSION_SET" = "yes" ] && [ "$LUA_VERSION" = "5.3" ]
    then
       suffixes="5.3 53 -5.3 -53"
+   elif [ "$LUA_VERSION_SET" = "yes" ] && [ "$LUA_VERSION" = "5.4" ]
+   then
+      suffixes="5.4 54 -5.4 -54"
    else
       suffixes="5.1 51 -5.1 -51"
       suffixes="$suffixes 5.2 52 -5.2 -52"
       suffixes="$suffixes 5.3 53 -5.3 -53"
+      suffixes="$suffixes 5.4 54 -5.4 -54"
    fi
    for suffix in "" $suffixes
    do
-- 
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