Index: haproxy-2.5/Makefile
===================================================================
--- haproxy-2.5.orig/Makefile
+++ haproxy-2.5/Makefile
@@ -103,7 +103,7 @@
 #   LUA_LIB        : force the lib path to lua
 #   LUA_INC        : force the include path to lua
 #   LUA_LIB_NAME   : force the lib name (or automatically evaluated, by order of
-#                                        priority : lua5.3, lua53, lua).
+#                                        priority : lua5.4, lua5.3, lua53, lua).
 #   OT_DEBUG       : compile the OpenTracing filter in debug mode
 #   OT_INC         : force the include path to libopentracing-c-wrapper
 #   OT_LIB         : force the lib path to libopentracing-c-wrapper
@@ -606,11 +606,11 @@ OPTIONS_CFLAGS  += $(if $(LUA_INC),-I$(L
 LUA_LD_FLAGS := -Wl,$(if $(EXPORT_SYMBOL),$(EXPORT_SYMBOL),--export-dynamic) $(if $(LUA_LIB),-L$(LUA_LIB))
 ifeq ($(LUA_LIB_NAME),)
 # Try to automatically detect the Lua library
-LUA_LIB_NAME := $(firstword $(foreach lib,lua5.3 lua53 lua,$(call check_lua_lib,$(lib),$(LUA_LD_FLAGS))))
+LUA_LIB_NAME := $(firstword $(foreach lib,lua5.4 lua54 lua5.3 lua53 lua,$(call check_lua_lib,$(lib),$(LUA_LD_FLAGS))))
 ifeq ($(LUA_LIB_NAME),)
-$(error unable to automatically detect the Lua library name, you can enforce its name with LUA_LIB_NAME=<name> (where <name> can be lua5.3, lua53, lua, ...))
+$(error unable to automatically detect the Lua library name, you can enforce its name with LUA_LIB_NAME=<name> (where <name> can be lua5.4, lua54, lua5.3, lua53, lua, ...))
 endif
-LUA_INC := $(firstword $(foreach lib,lua5.3 lua53 lua,$(call check_lua_inc,$(lib),"/usr/include/")))
+LUA_INC := $(firstword $(foreach lib,lua5.4 lua54 lua5.3 lua53 lua,$(call check_lua_inc,$(lib),"/usr/include/")))
 ifneq ($(LUA_INC),)
 OPTIONS_CFLAGS  += -I$(LUA_INC)
 endif
Index: haproxy-2.5/INSTALL
===================================================================
--- haproxy-2.5.orig/INSTALL
+++ haproxy-2.5/INSTALL
@@ -320,9 +320,9 @@ Lua is an embedded programming language
 advanced scripting capabilities. Only versions 5.3 and above are supported.
 In order to enable Lua support, please specify "USE_LUA=1" on the command line.
 Some systems provide this library under various names to avoid conflicts with
-previous versions. By default, HAProxy looks for "lua5.3", "lua53", "lua". If
-your system uses a different naming, you may need to set the library name in
-the "LUA_LIB_NAME" variable.
+previous versions. By default, HAProxy looks for "lua5.4", "lua54","lua5.3",
+"lua53","lua". If your system uses a different naming, you may need to set
+the library name in the "LUA_LIB_NAME" variable.
 
 If Lua is not provided on your system, it can be very simply built locally. It
 can be downloaded from https://www.lua.org/, extracted and built, for example :