Nginx1.24编译时，报LuaJIT2.x错误，

configuring additional modules
adding module in /www/server/nginx/src/ngx_devel_kit
 + ngx_devel_kit was configured
adding module in /www/server/nginx/src/lua_nginx_module
checking for LuaJIT 2.x ... not found
    ./configure: error: unsupported LuaJIT version; ngx_http_lua_module requires LuaJIT 2.x.

1.首先确认系统中是否存在，使用命令：luajit -v

# luajit -v
LuaJIT 2.1.0-beta3 -- Copyright (C) 2005-2022 Mike Pall. https://luajit.org/

2.如果存在 ，一般在 /usr/local/include 目录下

# ll /usr/local/include/luajit-2.1/
total 44
-rw-r--r-- 1 root root  6028 Jun  7 20:50 lauxlib.h
-rw-r--r-- 1 root root  4593 Jun  7 20:50 luaconf.h
-rw-r--r-- 1 root root 12650 Jun  7 20:50 lua.h
-rw-r--r-- 1 root root   135 Jun  7 20:50 lua.hpp
-rw-r--r-- 1 root root  3019 Jun  7 20:50 luajit.h
-rw-r--r-- 1 root root  1197 Jun  7 20:50 lualib.h

3.输入以下命令

export LUAJIT_INC=/usr/local/include/luajit-2.1/
export LUAJIT_LIB=/usr/local/lib

4.重新运行 ./configure 命令

5.以下错误是【./configure: error: unsupported LuaJIT build; ngx_http_lua_module requires LuaJIT with FFI enabled.】是因为没输入【export LUAJIT_LIB=/usr/local/lib】

configuring additional modules
adding module in /www/server/nginx/src/ngx_devel_kit
 + ngx_devel_kit was configured
adding module in /www/server/nginx/src/lua_nginx_module
checking for LuaJIT library in  and /usr/local/include/luajit-2.1 (specified by the LUAJIT_LIB and LUAJIT_INC env, with -ldl) ... found
checking for LuaJIT 2.x ... found
checking for Lua language 5.1 ... found
checking for LuaJIT has FFI ... not found
    ./configure: error: unsupported LuaJIT build; ngx_http_lua_module requires LuaJIT with FFI enabled.