186361 – devel/subversion won't compile with mod_dav_svn

:#cat /root/subversion.fix 
# This file is auto-generated by 'make config'.
# Options for subversion-1.8.5
_OPTIONS_READ=subversion-1.8.5
_FILE_COMPLETE_OPTIONS_LIST=BDB DOCS FREEBSD_TEMPLATE GNOME_KEYRING KDE_KWALLET MAINTAINER_DEBUG MOD_DAV_SVN NLS P4_STYLE_MARKERS SASL SERF STATIC SVNSERVE_WRAPPER TEST TOOLS
OPTIONS_FILE_UNSET+=BDB
OPTIONS_FILE_SET+=DOCS
OPTIONS_FILE_SET+=FREEBSD_TEMPLATE
OPTIONS_FILE_UNSET+=GNOME_KEYRING
OPTIONS_FILE_UNSET+=KDE_KWALLET
OPTIONS_FILE_UNSET+=MAINTAINER_DEBUG
OPTIONS_FILE_SET+=MOD_DAV_SVN
OPTIONS_FILE_UNSET+=NLS
OPTIONS_FILE_SET+=P4_STYLE_MARKERS
OPTIONS_FILE_UNSET+=SASL
OPTIONS_FILE_SET+=SERF
OPTIONS_FILE_UNSET+=STATIC
OPTIONS_FILE_UNSET+=SVNSERVE_WRAPPER
OPTIONS_FILE_UNSET+=TEST
OPTIONS_FILE_UNSET+=TOOLS

cd subversion/tests && /usr/local/bin/libtool --tag=CC --silent --mode=link cc  -Werror=unknown-warning-option -O2 -pipe -fpic -DPIC -fno-strict-aliasing    -L/usr/local/lib -L/usr/local/lib/db42 -L/usr/local/lib  -rpath /usr/local/lib -version-info 0  -o libsvn_test-1.la  svn_test_fs.lo svn_test_main.lo ../../subversion/libsvn_repos/libsvn_repos-1.la ../../subversion/libsvn_fs/libsvn_fs-1.la ../../subversion/libsvn_delta/libsvn_delta-1.la ../../subversion/libsvn_subr/libsvn_subr-1.la -L/usr/local/lib -laprutil-1 -L/usr/local/lib -lapr-1 
if true ; then cd subversion/mod_dav_svn && /usr/local/bin/libtool --tag=CC --silent --mode=link cc  -Werror=unknown-warning-option -O2 -pipe -fpic -DPIC -fno-strict-aliasing    -L/usr/local/lib -L/usr/local/lib/db42 -L/usr/local/lib  -rpath /usr/local/libexec/apache24 -avoid-version -module  -inst-prefix-dir   -o mod_dav_svn.la  activity.lo authz.lo deadprops.lo liveprops.lo lock.lo merge.lo mirror.lo mod_dav_svn.lo posts/create_txn.lo reports/dated-rev.lo reports/deleted-rev.lo reports/file-revs.lo reports/get-location-segments.lo reports/get-locations.lo reports/get-locks.lo reports/inherited-props.lo reports/log.lo reports/mergeinfo.lo reports/replay.lo reports/update.lo repos.lo util.lo version.lo ../../subversion/libsvn_repos/libsvn_repos-1.la ../../subversion/libsvn_fs/libsvn_fs-1.la ../../subversion/libsvn_delta/libsvn_delta-1.la ../../subversion/libsvn_subr/libsvn_subr-1.la  ; else echo "fake" > subversion/mod_dav_svn/mod_dav_svn.la ; fi
libtool: link: you must specify an output file
libtool: link: Try `libtool --help --mode=link' for more information.
*** [subversion/mod_dav_svn/mod_dav_svn.la] Error code 1

make[2]: stopped in /usr/ports/devel/subversion/work/subversion-1.8.5
1 error

make[2]: stopped in /usr/ports/devel/subversion/work/subversion-1.8.5
===> Compilation failed unexpectedly.
Try to set MAKE_JOBS_UNSAFE=yes and rebuild before reporting the failure to
the maintainer.
*** Error code 1

Stop.
make[1]: stopped in /usr/ports/devel/subversion
*** Error code 1

Stop.
make: stopped in /usr/ports/devel/subversion

Fix: 

fix:
/usr/ports/devel/subversion/files/patch-Makefile.in

change {DESTDIR} to (DESTDIR)
How-To-Repeat: make subversion with above options, seems mod_dav_svn is the one that triggers it.