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using make install clean, most of the packages have configuration options in which I have to manually choose the options. So if I install packageA with a lot of dependencies, those dependencies may have each a configuration option in which I have to select.
To select default Configuration i know 3 options that you can make use :
1.
For csh-based Shell:
# setenv BATCH yes 
OR for sh-based Shell:
# export BATCH=”yes”
2.
# make -DBATCH install clean
3.
# make config-recursive
usually to get all of the options displayed for you to choose upfront. I say “usually” because not all ports support it, but most do.


Having BATCH Variable also should work for portupgrade:
For csh-based Shell:
# setenv BATCH yes
OR for sh-based Shell:
# export BATCH=”yes”