How to build module ngx_http_opentelemetry_module for version nginx 1.20.1

[Ilyin-V-V]

I'm trying to figure out how to build ngx_http_opentelemetry_module for version nginx 1.20.1 in Centos 7 and is it possible?

From a container with Centos 7 in the downloaded archive nginx-1.20.1,
I execute:

1. [root@200e088735f3 nginx-1.20.1]#
   ./configure --add-module=/opt/src/1.0.1/opentelemetry-cpp-contrib-webserver-v1.0.1/instrumentation/otel-webserver-module/src/nginx/
   where /opt/src/1.0.1/opentelemetry-cpp-contrib-webserver-v1.0.1/instrumentation/otel-webserver-module/src/nginx/
   webserver/v1.0.1 and contains files,
   Makefile
   config
   ngx_http_opentelemetry_log.c
   ngx_http_opentelemetry_log.h
   ngx_http_opentelemetry_module.c
   ngx_http_opentelemetry_module.h

2. Configure works fine, but at the make stage I get errors:
   /opt/src/1.0.2/opentelemetry-cpp-contrib-webserver-v1.0.2/instrumentation/otel-webserver-module/src/nginx//ngx_http_opentelemetry_module.c:1511:12: note: expected 'const char *' but argument is of type 'u_char *'
   /opt/src/1.0.2/opentelemetry-cpp-contrib-webserver-v1.0.2/instrumentation/otel-webserver-module/src/nginx//ngx_http_opentelemetry_module.c:1512:51: error: assignment discards 'const' qualifier from pointer target type [-Werror]
   req_payload->headers[count].value = (const char)(h->value).data;
   ^
   cc1: all warnings being treated as errors
   make[1]: *** [objs/addon/nginx/ngx_http_opentelemetry_module.o] Error 1
   make[1]: Leaving directory `/nginx-1.20.1'
   make: *** [build] Error 2
   [root@200e088735f3 nginx-1.20.1]#

How can I build ngx_http_opentelemetry_module for the required version of nginx server?

err.log

[Ilyin-V-V]

In general I found the answer here #146, but it is not clear how to add the collected libraries to build a specific version of nginx

[Ilyin-V-V]

So I think I got it
cmake /sdk/src/1.0.2/opentelemetry-cpp-contrib-webserver-v1.0.2/instrumentation/nginx -Dopentelemetry-cpp_ROOT=/opt/lib/ -DNGINX_VERSION=1.20.1
But the build doesn't work:
cmake --build . -j
[ 47%] Built target project_nginx
CMakeFiles/otel_ngx_module.dir/build.make:207: *** target pattern contains no '%'. Stop.
gmake[1]: *** [CMakeFiles/Makefile2:110: CMakeFiles/otel_ngx_module.dir/all] Error 2
gmake: *** [Makefile:136: all] Error 2