It used to build for me very recently so must be a new change.
[ 2%] Building C object openicc/oyjl/CMakeFiles/oyjl-bootstrap.dir/oyjl_tree.c.o
/home/avatar/tmp/oyranos/openicc/oyjl/oyjl_tree.c: In function ‘oyjlTreeToCsv’:
/home/avatar/tmp/oyranos/openicc/oyjl/oyjl_tree.c:1226:11: error: label at end of compound statement
default:
^~~~~~~
It used to build for me very recently so must be a new change.