Control: tags -1 patch It wasn't built on arm64:
https://buildd.debian.org/status/package.php?p=h323plus&suite=sid https://wiki.debian.org/Autoreconf says: "So this means that using dh-autoreconf on packages which only use autoconf (but not automake) (even with debhelper or CDBS) is not enough to update config.{sub,guess}. In this case you need to use both dh-autoreconf and autotools-dev." I think this applies here. See attached patch.
diff -ru h323plus-1.24.0~dfsg2.orig/debian/rules h323plus-1.24.0~dfsg2/debian/rules --- h323plus-1.24.0~dfsg2.orig/debian/rules +++ h323plus-1.24.0~dfsg2/debian/rules @@ -12,7 +12,7 @@ URL := http://www.h323plus.org/source/download/h323plus-v$(URLVERSION).tar.gz %: - dh $@ --parallel --with autoreconf + dh $@ --parallel --with autoreconf,autotools-dev override_dh_auto_configure: dh_auto_configure -- --enable-plugins --disable-h46018 --disable-h46023 --disable-h460p --disable-gnugk
