Comment 8 for bug 2012119

Sorry, it's in our backlog but it seems unlikely it will be prioritised soon.

You need to use "debian/rules build" or "dpkg-buildpackage" to build a Debian source package, since the actual steps to follow can very based on the upstream package, and usually more options are needed to "./configure" etc to reproduce the distribution build exactly. For further help, try asking in #ubuntu-devel on Libera.Chat, or you ask in https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss