I needed to use the NetXMS agent on my Alpine Linux system which I am using as a utility linux server. The source-code download link for NetXMS v2.2.10 (latest at the time of this writing) is at https://www.netxms.org/download/releases/2.2/2.2.10/netxms-2.2.10.tar.gz
Here is the quick set of dependent packages and libraries I needed to install to be able to compile the NetXMS agent for my Alpine Linux box.
apk add --update alpine-sdk apk add gcc glibc apk add g++ automake openssl-dev apk add libcurl curl-dev apk add libssh-dev apk add mosquitto-libs mosquitto-dev apk add cmake apk add linux-headers
After installing the above, I could compile and install the NetXMS Agent component with:
tar -xzvf netxms-2.2.10.tar.gz cd netxms-2.2.10 sh ./configure --with-agent make make install
After successful installation you can just modify your NetXMS Agent config at /etc/nxagentd.conf (or copy it over from one of your other linux boxes) and launch the agent as a daemon using: