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Configuration isn't checking whether the LuaJIT libraries exist in the given paths on Linux #1661
Description
I'm trying to configure and build ngx_lua with ./configure --with-compat --add-dynamic-module=../lua-nginx-module-0.10.16rc4/, but it is unable to automatically find LuaJIT, and fails the LuaJIT 2.x check with error: unsupported LuaJIT version; ngx_http_lua_module requires LuaJIT 2.x..
It seems like it's not running any of the "auto-discovery" checks, which I believe is because $ngx_found is still "yes" from the previous check. This can be fixed by removing the if statement around the first check in that else block, "LuaJIT library in /usr/local/", or explicitly setting $ngx_found to no.
Even with that change, it passes the first check, even though LuaJIT is installed in /usr/, not /usr/local/. I don't think it ever checks if the LuaJIT libraries exist in the paths. This is true when LUAJIT_LIB and LUAJIT_INC were provided explicitly as well, with paths that do not exist:
configuring additional dynamic modules
adding module in ../lua-nginx-module-0.10.16rc4/
checking for LuaJIT library in /dkfjd and /asdfdsf (specified by the LUAJIT_LIB and LUAJIT_INC env, with -ldl) ... found
checking for LuaJIT 2.x ... not found
./configure: error: unsupported LuaJIT version; ngx_http_lua_module requires LuaJIT 2.x.
or compiling as a standard (not dynamic) module with LUAJIT_INC=/asdfdsf LUAJIT_LIB=/dkfjd ./configure --with-ld-opt="-Wl,-rpath,/usr/lib" --add-module=../lua-nginx-module-0.10.16rc4/:
configuring additional modules
adding module in ../lua-nginx-module-0.10.16rc4/
checking for LuaJIT library in /dkfjd and /asdfdsf (specified by the LUAJIT_LIB and LUAJIT_INC env, with -ldl) ... found
checking for LuaJIT 2.x ... not found
./configure: error: unsupported LuaJIT version; ngx_http_lua_module requires LuaJIT 2.x.
I fixed this by changing line 7 from ngx_feature_incs= to ngx_feature_incs="#include <lauxlib.h>", which I believe was removed in a96e99a and added it back like it is now in 315330a.
Looking at the ngx_feature_libs in the explicit section, it also appears that the ones in the auto discovery section should have -L/usr/local/include/luajit-2.0 / -L/usr/include/luajit-2.0 instead of -L/usr/local/lib / -L/usr/lib
It also doesn't automatically check for LuaJIT 2.1 at all.
Build Environment:
ngx_lua v0.10.16rc4
nginx 1.17.9
luajit 2.0.5-2 (I have also tried luajit 2.1 0ad60cc and openresty/luajit2@38cb695, with the same results)
gcc 9.2.1 20200130
Activity
pavelkim commentedon Apr 3, 2020
Hello,
First of all thanks for the leads. I thought, I've got the same issue, but no.
Compiled LuaJIT 2.0.5 in a temporary location, didn't install it to the system.
I think this line is misleading:
anil-venkata commentedon Nov 30, 2020
i solved it by specifying LUAJIT_LIB and LUAJIT_INC explicitly in the config file (at the variable initialisation)
LUAJIT_INC="/path/to/luajit/include/luajit-2.1" LUAJIT_LIB="/path/to/luajit//lib"and it installed
niloay commentedon Nov 30, 2020
https://forum.openresty.us/d/6494-ngx-http-lua-module-requires-luajit-2x
sharmashivanand commentedon Feb 3, 2022
What's the path going to be on Debian / Ubuntu? Sad this is still open and not yet resolved.
peterreji commentedon Mar 28, 2022
this worked for me as well
nivaldodasilva commentedon Jan 3, 2024
I share your frustration; I think some developers either retarded or they don't care. It seems when we download the https://github.com/openresty/luajit2, the lib and include folder don't exist. So again, no idea how to set
LUAJIT_INC="/path/to/luajit/include/luajit-2.1" LUAJIT_LIB="/path/to/luajit//lib"
zhuizhuhaomeng commentedon Jan 3, 2024
Please refer to the installation guide: https://github.com/openresty/lua-nginx-module?tab=readme-ov-file#installation