If you try to look what scanelf reports, some rdepends are missing. dev-libs/glib media-libs/fontconfig media-libs/freetype x11-libs/cairo x11-libs/gdk-pixbuf x11-libs/libX11 x11-libs/libXcomposite x11-libs/libXcursor x11-libs/libXdamage x11-libs/libXext x11-libs/libXfixes x11-libs/libXrandr x11-libs/libXrender x11-libs/pango To find the full list: qlist -e chromium | xargs scanelf -L -n -q -F '%n #F' | tr , ' ' | xargs qfile -Cv | sort -u | awk '{print $1}' | uniq
Just some notes about this: From https://blog.flameeyes.eu/2010/05/depend-on-what-you-use : "On the other hand, listing libpng because it’s present in the final link (especially when not using --as-needed) is a bad idea which you definitely should avoid." From https://blog.flameeyes.eu/2009/02/rdepend-safety : "As you can see here MPlayer does not use either of those libraries, which means that they should not be in MPlayer’s RDEPEND. There is, though, another common mistake here. If you don’t use --as-needed (especially not forcing it), you’re going to get indirect and misguided dependencies . So you can only trust DT_NEEDED when the system has been built with --as-needed from the start. This is not always the case and thus you can get polluted dependencies. And thanks to the fact that now the linker silently ignores --as-needed on broken libraries this is likely to create a bit of stir." I have emerged chromium successfully from an empty chroot several times, so I don't see any obvious breakage. I'll do deeper checks on this, but it will take some time. Any help with verifying that chromium uses mentioned dependencies directly would be appreciated. One strategy is to just look for references and pkg-config calls in gyp files (http://cs.chromium.org).
Agostino brought this to my attention in #gentoo-dev before filing this bug. I also found Diego's blog posts, but asked him to file a bug anyway. These days --as-needed is enabled by default, and I'm sure Ago has it enabled. That would imply that chromium is using some symbols from these libraries directly; otherwise, they would get dropped from DT_NEEDED by the linker. I don't think anything is currently broken, but we are probably relying on some indirect deps.
This is another test on my system: $ ldd -u -r /usr/lib/chromium-browser/chrome Unused direct dependencies: /usr/lib/libplc4.so /usr/lib/libXrender.so.1 /lib/libcap.so.2 I think this means most of the libs flagged by scanelf are indeed used directly.
19 Jul 2014; Pawel Hajdan jr chromium-37.0.2062.20.ebuild: Add more used libraries to RDEPEND, bug #512806 by ago. I'll close this bug when the fix makes it to stable.
chromium-37 is now stable, closing
