On Thu, 25 Oct 2018 09:30:00 +0300 Nikos Chantziaras wrote:
> Trying to rebuild media-sound/pavucontrol or any other package that uses
> dev-cpp/cairomm (like pulseeffects) will fail with:
>
> /usr/lib/gcc/x86_64-pc-linux-gnu/8.2.0/../../../../x86_64-pc-linux-gnu/bin/ld:
>
> /usr/lib/gcc/x86_64-pc-linux-gnu/8.2.0/../../../../lib64/libcairomm-1.0.so:
> undefined reference to `cairo_script_create'
>
> and a bunch of other "undefined reference" errors in libcairomm-1.0.so.
> I don't know what broke cairomm. But I thought revdep-rebuild would
> catch this. It doesn't.
>
> Now this is a rebuild of pavucontrol, so if I run:
>
>ldd -r /usr/bin/pavucontrol
>
> I will get:
>
>undefined symbol: cairo_script_create_for_stream
> (/usr/lib64/libcairomm-1.0.so.1)
>undefined symbol: cairo_script_set_mode (/usr/lib64/libcairomm-1.0.so.1)
>undefined symbol: cairo_script_surface_create
> (/usr/lib64/libcairomm-1.0.so.1)
>undefined symbol: cairo_script_from_recording_surface
> (/usr/lib64/libcairomm-1.0.so.1)
>undefined symbol: cairo_script_create (/usr/lib64/libcairomm-1.0.so.1)
>undefined symbol: cairo_script_surface_create_for_target
> (/usr/lib64/libcairomm-1.0.so.1)
>undefined symbol: cairo_script_get_mode (/usr/lib64/libcairomm-1.0.so.1)
>undefined symbol: cairo_script_write_comment
> (/usr/lib64/libcairomm-1.0.so.1)
>
> If I rebuild dev-cpp/cairomm manually (emerge -1 dev-cpp/cairomm), the
> error goes away, and the affected packages can now be emerged successfully.
>
> Shouldn't revdep-rebuild catch this problem? Shouldn't it check
> installed binaries for "undefined symbol" errors?
revdep-rebuild catches libraries from removed packages (including
removed older versions) still in use by other packages. Though with
proper subslot dependencies revdep-rebuild is rarely needed.
If for some reason library containing required symbol was
forcefully removed, revdep-rebuild cannot magically recreate that
symbol.
Best regards,
Andrew Savchenko
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