Instead of adding or modifying files in the directory where the sources of a Perl module are unpacked, I would like to build everything in a separate directory. Is this easily achievable with a fairly standard `Makefile.PL` that uses `ExtUtils::MakeMaker`? (By easy, I mean something like one or a few command line parameters.) If no, does any of the other build systems support this?

**Update / Reason:** The Perl module is a binding to a library whose build system is `autoconf`/`automake`/`libtool`-based. The Perl module is shipped together with this library and calling `make` in the top directory eventually also builds the Perl library. I am interested in building the entire project in a separate build tree. At the moment I do something similar to what runrig suggested, only using symlinks. (`cp -sru $(srcdir)/. $(builddir)/.`). This has worked so far, but if there is a more elegant solution, I'd like to read about it.