http://benji3up2kxewkqfcq7buxk2xd6zwy3zggnurkrm3l4cvwy2iipvyyad.onion/mirrors/gmpdoc/Headers-and-Libraries.html
For example, g++ mycxxprog.cc -lgmpxx -lgmp GMP is built using Libtool and an application can use that to link if desired,
see GNU Libtool in GNU Libtool . If GMP has been installed to a non-standard location then it may be necessary
to use ‘ -I ’ and ‘ -L ’ compiler options to point to the right
directories, and some sort of run-time path for a shared library.