Install hammer includes in /usr/include/vfs/hammer.
treeaefd3d45c1a57396fdd9fb9ea5c64c4d79d1e1be
-rw-r--r-- 6901 COPYRIGHT
-rw-r--r-- 7908 Makefile
-rw-r--r-- 34146 Makefile.inc1
-rw-r--r-- 2625 README
-rw-r--r-- 384 README.amd64
-rw-r--r-- 9540 UPDATING
drwxr-xr-x - bin
drwxr-xr-x - contrib
drwxr-xr-x - crypto
drwxr-xr-x - etc
drwxr-xr-x - games
drwxr-xr-x - gnu
drwxr-xr-x - include
drwxr-xr-x - kerberos5
drwxr-xr-x - lib
drwxr-xr-x - libexec
drwxr-xr-x - nrelease
drwxr-xr-x - sbin
drwxr-xr-x - secure
drwxr-xr-x - share
drwxr-xr-x - sys
drwxr-xr-x - test
drwxr-xr-x - tools
drwxr-xr-x - usr.bin
drwxr-xr-x - usr.sbin