The cbuilder5 project has not been updated to libpng-1.4.0. It needs to depend on pngpriv.h It needs to *not* depend on pnggccrd.c or pngvcrd.c It needs to DEFINE PNG_NO_PEDANTIC_WARNING while building the library, but not while building an application. If an updated version is not received, this project will be removed when libpng-1.4.0 is released.