autotrace fails to build because libpng changed its API between 1.4 and 1.5.
Apply a patch from MacPorts to fix this. Thanks to adamv for the solution.
ClosesHomebrew/homebrew#16569.
Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Autotrace is a small utility for tracing bitmap files to vector graphics. The tool has been updated years ago, but still works and compiles nicely.
As default it is compiled with ImageMagick (as the default configure script would do). To disable it set "--without-imagemagick"
Signed-off-by: David Höppner <0xffea@gmail.com>
Adam Vandenberg
Derek Poon
Benjamin Maus