I ran into this problem a couple of weeks ago and just now had time to dig into it a little more, I found a thread that provided this solution: run ar -rc /usr/lib/libpthread.a to create an archive file that is missing. Also, for serialport specifically it looks like someone has tackled that: https://community.onion.io/topic/1537/serial-ports-usb-and-nodejs-support

hap-nodejs itself does not require node-gyp rebuilding. Dependencies which do require it: mdns curve25519-n2 ed25519 I was able to build all of them on my omega 2+. Here is the link: https://happyche.wordpress.com/2017/12/05/homebridge-on-lede-openwrt-routers/ One thing I needed to do differently was, pasting dns_sd.h file into /usr/include, and not into /usr/include/avahi-compat-libdns_sd. I can share compiled libpthread.a file on priv.

This is a Cross compiled node-red-node-serialport 0.8.1 for Onion omega 2/2+/2 Pro https://github.com/t2t-sonbui/Node-Red-Omega-2

@patrick-gunderson I am trying to build a simple IoT project - and got stuck because the SerialPort module does NOT have a MIPS version. I am trying to get setup to attempt building it BUT it won't compile/build - get to the same stage as you are. Any instructions on how to get gcc / node-gyp installed on the Omega2?