How to build a static library ? or a ".a" extension library

[jhay06]

would like to ask how can i build it a static library , i tried to use it on my QT app for Ios , only android is working but for ios it always fails saying that
"node::Start(int, char**)", referenced from:
NodeServer::startNode() in nodeserver.o
ld: symbol(s) not found for architecture x86_64

i if i can build it statically it will fix the issue

or any way i can directly include the nodejs source code on my cmakelists ?