"ngx_http_lua_module 0.10.15 required" issue when starting Openresty

I am able to compile Openresty for PPC platforms but unable to start the same due the following issue :

lua_load_resty_core failed to load the resty.core module from https://github.com/openresty/lua-resty-core; ensure you are using an OpenResty release from https://openresty.org/en/download.html (rc: 2, reason: /usr/binos/openresty/lualib/resty/core/base.lua:23: ngx_http_lua_module 0.10.15 required)

OpenResty version : openresty/1.15.8.3
OS version : Linux ztp_RP_1 4.9.238 #1 SMP Mon Oct 12 17:19:38 UTC 2020 ppc ppc ppc GNU/Linux
Since, Nginx doesn't even start so nothing to share with Nginx error logs here.

The base.lua seems to be failing around this check :

if subsystem == 'http' then
    if not ngx.config
       or not ngx.config.ngx_lua_version
       or ngx.config.ngx_lua_version ~= 10015
    then
        error("ngx_http_lua_module 0.10.15 required")
    end

I broke the three conditions to see the variable's status here and I found that ngx.config.ngx_lua_version is not set to anything. As per my finding till now, the variable should have been set in build/ngx_lua-0.10.15/src/ngx_http_lua_config.c.
I am unsure why this is not set properly.

Please, note that we do compile the same Openresty for other type of platforms(ARM/X86_64) and it does come up fine.
Also, Kindly note the flags used for building Luajit for this:

else ifneq ($(filter $(PPC_ALL_TARGETS),$(TARGET)),)
        $(Nx)HOST_CC := \
               $($(Nx)LUAJIT_HOST_CC) \
               -m32 \
               -DLJ_HASJIT=0 \
               -LJ_ABI_SOFTFP=1 \
               -DLUAJIT_TARGET=LUAJIT_ARCH_PPC \
               -LJ_TARGET_PPC=1 \

             $(Nx)DASM_ARCH := ppc

             $(Nx)DASM_FLAGS := -D FFI -D FPU -D HFABI -D VER=

             $(Nx)DASM_DASC := vm_ppc.dasc

Any kind of help here would be much appreciated!

Start with lualib/resty/core/base.lua and the reported ngx_http_lua_config.c under build/ngx_lua-0.10.15, then inspect the PPC Luajit build flags and reproduce the OpenResty startup failure. Done means ngx.config.ngx_lua_version is set correctly and OpenResty starts on the PPC platform without the ngx_http_lua_module version error.