I can\'t find this anywhere.
I\'ve installed json-spirit on my ubuntu server with apt-get install json-spirit-dev.
apt-get install json-spirit-dev
What linker flag has to be us
The only library listed in that package is called libjson_spirit.a. You can link with it by adding -ljson_spirit to your linker step.
libjson_spirit.a
-ljson_spirit