INFO: setup
Package:    mail-filter/procmail-3.24-r1:0
Repository: gentoo
USE:        abi_x86_64 amd64 elibc_glibc kernel_linux
FEATURES:   preserve-libs sandbox userpriv usersandbox
INFO: prepare
Applying procmail-3.24-modern-c.patch ...
Applying procmail-3.24-maildir.patch ...
Applying procmail-3.24-lazy-bindings.patch ...
Applying procmail-3.24-gentoo-prefix.patch ...
Adjusting to prefix /
  config.h ...
  Makefile ...
  autoconf ...
  recommend.c ...
INFO: install
Final size of build directory: 2096 KiB (2.0 MiB)
Final size of installed tree:   464 KiB
LOG: postinst
Starting with mail-filter/procmail-3.22-r9 you'll need to ensure
that you configure a mail storage location using DEFAULT in
/etc/procmailrc, for example:
	DEFAULT=$HOME/.maildir/
WARN: postinst
FEATURES=sfperms removes the read-bit for others from
  /usr/bin/procmail
  /usr/bin/lockfile
If you use procmail from an MTA like Exim, you need to
re-add the read-bit or avoid the MTA checking the binary
exists.
INFO: other
>>> SetUID and SetGID: [chmod o-r] /usr/bin/procmail ...
>>> SetGID: [chmod o-r] /usr/bin/lockfile ...