Comment 3 for bug 1117755

As far as I've seen in bake-generated packaging, destdir aka install-directory is currently being set to debian/<packagename>, which is not always correct. It is correct if the source package generates only one binary package, but if it has several binary packages, such as <packagename>-dbg, <packagename>-common or <packagename>-dev in addition to <packagename>, simply installing everything to debian/<packagename> will not work.

As far as I know, in build systems already supported by Debhelper the destdir is set to debian/tmp and files are copied to package-specific files by debhelper according to the debian/install.<packagename> files, or at least that's what I observe in Granite packaging.

I, of course, suggest contacting debhelper maintainers for clarification, because I'm not aware of the internal workings of debhelper and my experimental data is not necessarily representative.