We don't have MariaDB yet and there is no ./configure option for it

--- libreoffice-6.2.1.2/configure.ac
+++ libreoffice-6.2.1.2/configure.ac
@@ -8471,7 +8471,7 @@ AC_SUBST(PYTHON_VERSION)
 AC_SUBST(PYTHON_VERSION_MAJOR)
 AC_SUBST(PYTHON_VERSION_MINOR)
 
-ENABLE_MARIADBC=TRUE
+ENABLE_MARIADBC=
 if test "$_os" = "Android" -o "$_os" = "iOS"; then
     ENABLE_MARIADBC=
 fi