that worked, now it looks like its time to play hunt and install until cmake works.That should be part of jsoncpp package.
/bin/mkdir -p /usr/ports/multimedia/avidemux-qt4/work/.build ld-elf.so.1: Shared object "libuv.so.1" not found, required by "cmake" *** Error code 1
CMake Error at CMakeLists.txt:19 (MESSAGE): Qt NOT FOUND -- Configuring incomplete, errors occurred! See also "/usr/ports/multimedia/avidemux-qt4/work/.build/CMakeFiles/CMakeOutput.log". *** Error code 1
He's trying to build avidemux-qt4.