Hi, it seems to depend on whether macro SHA256 is defined:
https://sources.debian.org/src/freebsd-buildutils/9.0-11/src/usr.sbin/mtree/misc.c/#L76 SHA256 seems to be the most recently added feature https://sources.debian.org/src/freebsd-buildutils/10.3~svn296373-7/debian/changelog/?hl=3#L3 says " freebsd-buildutils (10.3~svn296373-7) unstable; urgency=medium * Build fmtree with support for MD5, SHA1, RMD160, SHA256 checksums (Closes: #854184, #855072) - add Build-Depends: libmd-dev - refresh 22_ld_as_needed.diff * Merge patch from Ubuntu: prototype-setmode.diff (Logan Rosen) -- Steven Chamberlain <[email protected]> Mon, 13 Feb 2017 21:45:25 +0000 " Debian 9 seems to be older https://packages.debian.org/source/oldstable/freebsd-buildutils says "Source Package: freebsd-buildutils (10.3~svn296373-6)" One of the mentioned bug reports has a justification for the traditional lack. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=855072 says "When this was packaged in 2005, we did not have libmd. Since recently, we have this now in sid/stretch, so I shall enable this feature :)" Have a nice day :) Thomas
