The reason for the build breakage can be found in
https://tracker.debian.org/media/packages/z/zeromq3/changelog-4.3.4-3
which has
zeromq3 (4.3.4-3) unstable; urgency=medium
* Remove zmq{,_addon}.hpp as these provided by cppzmq-dev from now on
(closes: #972785).
-- Laszlo Boszormenyi (GCS) <g...@debian.org> Mon, 15 Aug 2022
18:40:34 +0200
so I think it should be as easy as adding cppzmq-dev to the build
dependencies.
$diff -Nur control control.new
--- control 2022-10-13 16:19:07.384578078 +0200
+++ control.new 2022-10-13 16:19:03.972578004 +0200
@@ -7,6 +7,7 @@
default-libmysqlclient-dev,
libcos4-dev,
libzmq5-dev | libzmq3-dev,
+ cppzmq-dev,
omniidl,
po-debconf
Build-Depends-Indep: doxygen,
