aix[45]*) #(vi
CPPFLAGS="$CPPFLAGS -D_ALL_SOURCE"
;;
-freebsd*) #(vi
+freebsd*|dragonfly*) #(vi
# 5.x headers associate
# _XOPEN_SOURCE=600 with _POSIX_C_SOURCE=200112L
# _XOPEN_SOURCE=500 with _POSIX_C_SOURCE=199506L
else
cf_cv_hashed_db_libs=unknown
-for cf_db_libs in db$cf_cv_hashed_db_version db-$cf_cv_hashed_db_version db ''
+for cf_db_libs in "" db$cf_cv_hashed_db_version db-$cf_cv_hashed_db_version db ''
do
cf_save_libs="$LIBS"
if test -n "$cf_db_libs"; then