How to build waifu2x-ncnn-vulkan on jetson nano with JetPack 4.5 or 4.6
1. First of all, prepared mandatory apt library should be installed as follows
sudo apt install libvulkan1 libvulkan-dev vulkan-utils nvidia-l4t-libvulkan
2. Clone source code from GitHub as follows
git clone https://github.com/nihui/waifu2x-ncnn-vulkan.git
cd waifu2x-ncnn-vulkan
git submodule update --init --recursive
3. Set Environment variables to use pthread libararies
export LDFLAGS="-pthread -lpthread"
4. and run CMake as
mkdir build
cd build
cmake -DVulkan_LIBRARY=/usr/lib/aarch64-linux-gnu/libvulkan.so -DVulkan_INCLUDE_DIR=/usr/include/vulkan -D OpenMP_EXE_LINKER_FLAG=-pthread ../src
5. Probably you stay at build directory, So patch ../src/CMakeLists.txt as manually
to comment out first 2 lines of the file
#cmake_policy(SET CMP0091 NEW)
#set(CMAKE_POLICY_DEFAULT_CMP0091 NEW)
6. Finally, run make
make -j 4
