To finalize the automatic package build for Gentoo linux we need that Makefiles respect DESTDIR environment variable. The install process installs files into a relocated directory tree and much later, files are moved to a final place ('/').
I think you can check this with:
make install DESTDIR=/tmp/blah
which should create the /tmp/blah/(bin|lib ....), etc.
See http://bugs.gentoo.org/show_bug.cgi?id=311847 if you care about the Gentoo stuff, or ask jlec@ there for more help. I will be away for a week.