provide all (boost,.. whatever) libs to gcc in Freebsd and Ubuntu

Question

What commands are there to tell g++ to use all .so libs of a library like boost or opencv in a system?

I mean not to link it one by one manually like g++ /usr/local/lib/libboost_filesystem.so ....
Forgot such command in ubuntu and don't know what is it in FreeBSD.

Answer 1

Could it be you are looking for pkg-config ? If so, it's in ports in devel.
Usage: pkg-config --libs --cflags libraryName

Answer 2

You need to use -L and -l options with g++