Is there a way to just compile protobuf and not to deal with anything under third_party?
We have a build system that symlink pretty much link (yeah don't ask me why) everything into a build directory before building...

When running autogen.sh, it complains about the underlying modules (googletest and benchmark) is missing the m4 folder then just died there.

autoreconf -f -i -s
aclocal: couldn't open directory `m4': No such file or directory
autoreconf: aclocal failed with exit status: 1

I don't need googletest nor benchmark, how to disable them?