The log shows the error is:
:info:build /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_kde_kmymoney4-devel/kmymoney4-devel/work/kmymoney/kmymoney/mymoney/mymoneyreport.cpp:822:29: error: ordered comparison between pointer and zero ('const void *' and 'int')
:info:build return (list.contains(id) > 0);
:info:build ~~~~~~~~~~~~~~~~~ ^ ~
:info:build 1 error generated.
:info:build make[2]: *** [kmymoney/mymoney/CMakeFiles/kmm_mymoney.dir/mymoneyreport.cpp.o] Error 1
Ordered comparisons between pointers and zero are always a developer mistake, but clang has only started reporting it as an error in recent versions.
Duplicate of #58364.