libpng transition?

[Joshua Root]

On 2011-1-22 20:32 , Takeshi Enomoto wrote:
> I updated ncarg in r75337 that addresses #28043. It turned out that this was related to update of libpng.
> 
> The source code of ncarg uses a symbol int_p_NULL, which has been removed in libpng 1.4.
> In this case I was able to handle the problem by replacing that with (int*)NULL.
> 
> There might be other ports that use such deprecated symbols.

There are (or at least were), but generally this would cause a build
failure. The build system for ncarg must be a little unusual in that it
keeps going and returns status 0 when this file fails to compile.

- Josh