I am trying to compile this code
https://github.com/iceland2k14/KeyHunt-Cuda

but it will only compile without cuda support the error message is

 ./KeyHunt -l
GPU code not compiled, use -DWITHGPU when compiling.

However I can see it happening. A lot of output ending with

g++ -DWITHGPU -m64 -mssse3 -Wno-write-strings -O2 -I. -I/usr/local/cuda/include -o obj/GmpUtil.o -c GmpUtil.cpp
g++ -DWITHGPU -m64 -mssse3 -Wno-write-strings -O2 -I. -I/usr/local/cuda/include -o obj/CmdParse.o -c CmdParse.cpp
Making KeyHunt...

It works in cpu mode.

VanitySearch and kangaroo from JLP both compile with gpu support.

Any ideas please??