* Attempting to build documentation
make -C doc doc
make[1]: Entering directory `/var/tmp/portage/media-libs/libdvbpsi-0.1.5/work/libdvbpsi4-0.1.5/doc'
dot -Tpng -o decoder.png decoder.dot
Renderer type: "png" not recognized. Use one of: canon cmap cmapx dia dot fig gd gd2 gif hpgl imap ismap mif mp pcl pic plain plain-ext ps ps2 svg svgz vtx wbmp xdot
make[1]: *** [decoder.png] Error 1
make[1]: Leaving directory `/var/tmp/portage/media-libs/libdvbpsi-0.1.5/work/libdvbpsi4-0.1.5/doc'
make: *** [doc] Error 2

!!! ERROR: media-libs/libdvbpsi-0.1.5 failed.
Call stack:
  ebuild.sh, line 1614:   Called dyn_compile
  ebuild.sh, line 971:   Called qa_call 'src_compile'
  environment, line 1212:   Called src_compile
  libdvbpsi-0.1.5.ebuild, line 31:   Called die

!!! Could not build documentation.
!!! If you need support, post the topmost build error, and the call stack if relevant.
!!! A complete build log is located at '/var/tmp/portage/media-libs/libdvbpsi-0.1.5/temp/build.log'.

streamlined etc # emerge --newuse -va libdvbpsi

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

Calculating dependencies... done!
[ebuild  N    ] media-libs/libdvbpsi-0.1.5  USE="doc" 0 kB 

Total: 1 package (1 new), Size of downloads: 0 kB

Would you like to merge these packages? [Yes/No] n

Quitting.

streamlined etc #