Although ports/graphics/gd depends on libpng, it is not compiled with PNG support. Fix: Add GD_PNG to the FEATURES list. See trivial patch below.
Responsible Changed From-To: freebsd-ports-bugs->dinoex Over to maintainer
State Changed From-To: open->feedback
State Changed From-To: feedback->closed committed, thanks. The png support was compiled in. Due a bug in the configure script of the distribution, that feature was not listed.