曝してみる

$ revdep-rebuild --pretend --library=libexpat.so.0
Configuring search environment for revdep-rebuild

Checking reverse dependencies...

Packages containing binaries and libraries using libexpat.so.0
will be emerged.

Collecting system binaries and libraries... done.
  (/root/.revdep-rebuild.1_files)

Checking dynamic linking...
  found /usr/lib/libaprutil-0.so.0.9.12
  found /usr/sbin/ab2
  found /usr/sbin/ab2-ssl
  found /usr/sbin/apache2
  found /usr/sbin/checkgid2
  found /usr/sbin/htdbm
  found /usr/sbin/htdigest2
  found /usr/sbin/htpasswd2
  found /usr/sbin/httxt2dbm
  found /usr/sbin/logresolve2
  found /usr/sbin/rotatelogs2
 done.
  (/root/.revdep-rebuild_77938876.3_rebuild)

Assigning files to ebuilds... done.
  (/root/.revdep-rebuild_77938876.4_ebuilds)

Evaluating package order... done.
  (/root/.revdep-rebuild_77938876.5_order)

All prepared. Starting rebuild...
emerge --oneshot --pretend =dev-libs/apr-util-0.9.12-r1 =www-servers/apache-2.0.58-r2

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   ] dev-libs/apr-util-0.9.12-r1
[ebuild   R   ] www-servers/apache-2.0.58-r2

はい。がんばれ鯖。