Make error

hello everybody,
I have a problem with the make command after modifying the Makefile with the following values:
GPU=1
CUDNN=1
OPENCV=1
​​and when I go to make, I receive the following error:
nvcc -gencode arch=compute_35,code=sm_35 -gencode arch=compute_50,code=[sm_50,compute_50] -gencode arch=compute_52,code=[sm_52,compute_52] -gencode arch=compute_61,code=[sm_61,compute_61] -Iinclude/ -I3rdparty/stb/include -DOPENCV pkg-config --cflags opencv4 2> /dev/null || pkg-config --cflags opencv -DGPU -I/usr/local/cuda/include/ -DCUDNN --compiler-options “-Wall -Wfatal-errors -Wno-unused-result -Wno-unknown-pragmas -fPIC -Ofast -DOPENCV -DGPU -DCUDNN -I/usr/local/cudnn/include -fPIC” -c ./src/convolutional_kernels.cu -o obj/convolutional_kernels.o
/bin/sh: 1: nvcc: not found
Makefile:185: recipe for target ‘obj/convolutional_kernels.o’ failed
make: *** [obj/convolutional_kernels.o] Error 127
i used following path for cuda,
export PATH=/usr/local/cuda-10.0/bin${PATH:+:${PATH}}
export LD_LIBRARY_PATH=/usr/local/cuda-10.0/lib64${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}
I don’t know what the solution is,
thanks