Doing emerge @preserved-rebuild or emerge --depclean always yields the following: !!! existing preserved libs: >>> package: dev-libs/libcdio-0.90-r1 * - /usr/lib64/libcdio.so.13 * - /usr/lib64/libcdio.so.13.0.0 * used by /usr/lib64/audacious/Input/cdaudio-ng.so (media-plugins/audacious-plugins-3.2.2-r1) >>> package: media-libs/libpng-1.6.8 * - /usr/lib64/libpng15.so.15 * - /usr/lib64/libpng15.so.15.17.0 * used by /usr/bin/dillo (www-client/dillo-3.0.3) * used by /usr/bin/gs (app-text/ghostscript-gpl-9.05-r1) * used by /usr/bin/pamrgbatopng (media-libs/netpbm-10.51.00-r2) * used by 12 other files Use emerge @preserved-rebuild to rebuild packages using these libraries This page suggests filing a bug with the maintainer but I see no way to assign a bug to a specific package? (http://wiki.gentoo.org/wiki/Preserve-libs) This bug is related to: https://bugs.gentoo.org/show_bug.cgi?id=230257. The workaround suggested by the wiki works.
objdump -p /usr/bin/dillo |grep NEEDED objdump -p /usr/bin/gs |grep NEEDED ...lists libpng15 or libpng16?
both gs and dillo list libpng16
Please file separate bug reports for separate issues. The audacious-plugins issue is being fixed as per bug #490463.
Please post your `emerge --info' output in a comment.