Hei hei, I'm currently working on upgrading dropbear in the ptxdist embedded Linux build system. ptxdist has a quite strict policy to explicitly pass all available options of ./configure in order to have a predictable build result. So I tried passing --disable-fuzz which did not have the expected effect. I confirmed the broken behaviour on my workstation (Debian 9 (stretch) on amd64) and this is the fix I came up with. It's just mimicking what the other options do, I have only very few experience with autotools, so please review carefully.
And sorry for the messed up mails from yesterday, my Mercurial skills are a bit rusty and sending patches with hg is a little different from Git … ;-) Greets Alex