(Regarding https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=919395 and https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=919374)
One of the failures is due to not finding header file mysql_time.h In Debian stable and testing the file /usr/include/mysql/mysql_time.h is provided by libmariadbclient-dev In Debian unstable now the file /usr/include/mariadb/server/mysql_time.h is provided by libmariadb-dev and the file /usr/include/mysql/mysql_time.h is provided by both libmariadbclient-dev, libmysqlclient-dev So at least this one is caused by MariaDB Connector/C server bundled version had some of the header files moved from include/mysql to include/server/mysql. I wonder if there was some particular design rationale for this upstream? Should we deviate from that in Debian or have some fix that is identical in upstream and Debian? This changed now also in Debian when packages migrated from using libmariadbclient-dev to libmariadb-dev. The file libmariadb-dev.install has only "usr/include/mariadb" defined and it inherits the contents from whatever upstream code outputs there. The file libmariadb-dev.links also already symlinks "usr/include/mariadb/ usr/include/mysql" (added in https://salsa.debian.org/mariadb-team/mariadb-10.3/blob/master/debian/libmariadb-dev.links) For latest state see https://salsa.debian.org/mariadb-team/mariadb-10.3/tree/master/debian
