Graphviz would not install as pkg-config was not reading the pangocairo.pc in the grphviz configure file in the sage environment so it was not setting the includes correctly. Cause is a duplication of SAGE_ROOT definition in sage's local libpng12.pc. This problem with the libpng.pc file also featured in ticket #11686 on matplotlib.
the pangocairo include path can be set using a Graphviz environment label. Having set this Graphviz installed correctly martin -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
