/usr/include/ is in libedata-cal1.2-dev 3.2.3-0ubuntu7.1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/evolution-data-server-3.2/
/usr/include/evolution-data-server-3.2/libedata-cal/
/usr/include/evolution-data-server-3.2/libedata-cal/e-cal-backend-cache.h
/usr/include/evolution-data-server-3.2/libedata-cal/e-data-cal-factory.h
/usr/include/evolution-data-server-3.2/libedata-cal/e-cal-backend.h
/usr/include/evolution-data-server-3.2/libedata-cal/e-data-cal.h
/usr/include/evolution-data-server-3.2/libedata-cal/e-cal-backend-sexp.h
/usr/include/evolution-data-server-3.2/libedata-cal/e-cal-backend-sync.h
/usr/include/evolution-data-server-3.2/libedata-cal/e-cal-backend-file-store.h
/usr/include/evolution-data-server-3.2/libedata-cal/e-cal-backend-store.h
/usr/include/evolution-data-server-3.2/libedata-cal/e-cal-backend-util.h
/usr/include/evolution-data-server-3.2/libedata-cal/e-cal-backend-intervaltree.h
/usr/include/evolution-data-server-3.2/libedata-cal/e-data-cal-common.h
/usr/include/evolution-data-server-3.2/libedata-cal/e-data-cal-view.h
/usr/include/evolution-data-server-3.2/libedata-cal/e-cal-backend-factory.h
/usr/include/evolution-data-server-3.2/libedata-cal/e-data-cal-types.h