/usr/bin/ld: cannot find -lstdc++ (cacti installation)

Hello all
I am trying to install cacti5.3 (<a href="https://www.hpl.hp.com/research/cacti/" target="_blank" rel="nofollow noopener noreferrer">www.hpl.hp.com</a>). The installation is simple : one has to download the tar file, unzip it, run the make command. When I run make, I get the following error message:

/usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-linux-gnu/4.6/libstdc++.so when searching for -lstdc++
/usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-linux-gnu/4.6/libstdc++.a when searching for -lstdc++
/usr/bin/ld: cannot find -lstdc++

I read somewhere linking statically to libstdc++ with -static-libstdc++ option is the solution, I guess I have to add this line in the Makefile, but where exactly?

Thanks in advance