cuDNN ./minstCUDNN doesnt work

Hi,
I get the following error when trying to make, as explained in https://docs.nvidia.com/deeplearning/sdk/cudnn-install/index.html:

:~/cudnn_samples_v7/mnistCUDNN$ make
/usr/local/cuda/bin/nvcc -ccbin g++ -I/usr/local/cuda/include -IFreeImage/include -m64 -gencode arch=compute_30,code=sm_30 -gencode arch=compute_35,code=sm_35 -gencode arch=compute_50,code=sm_50 -gencode arch=compute_53,code=sm_53 -gencode arch=compute_53,code=compute_53 -o fp16_dev.o -c fp16_dev.cu
g++ -I/usr/local/cuda/include -IFreeImage/include -o fp16_emu.o -c fp16_emu.cpp
g++ -I/usr/local/cuda/include -IFreeImage/include -o mnistCUDNN.o -c mnistCUDNN.cpp
/usr/local/cuda/bin/nvcc -ccbin g++ -m64 -gencode arch=compute_30,code=sm_30 -gencode arch=compute_35,code=sm_35 -gencode arch=compute_50,code=sm_50 -gencode arch=compute_53,code=sm_53 -gencode arch=compute_53,code=compute_53 -o mnistCUDNN fp16_dev.o fp16_emu.o mnistCUDNN.o -I/usr/local/cuda/include -IFreeImage/include -LFreeImage/lib/linux/x86_64 -LFreeImage/lib/linux -lcudart -lcublas -lcudnn -lfreeimage -lstdc++ -lm

:~/cudnn_samples_v7/mnistCUDNN$ ./minstCUDNN
bash: ./minstCUDNN: No such file or directory

:~/cudnn_samples_v7/mnistCUDNN$ ls
data fp16_dev.h fp16_emu.h gemv.h mnistCUDNN.cpp
error_util.h fp16_dev.o fp16_emu.o Makefile mnistCUDNN.o
fp16_dev.cu fp16_emu.cpp FreeImage mnistCUDNN readme.txt

GPU: gtx 1080
CUDA: 10
cuDNN: v7.4

What is wrong?

Greatings Nils