lXxf86vm and lXi linker option on Ubuntu 20

[sihyeon-kim]

I've been following Development environment.
In my case on Ubuntu 20.04, -lXxf86vm and -lXi linker option is not working.

$ make test
g++ -std=c++17 -O2 -o VulkanTest main.cpp -lglfw -lvulkan -ldl -lpthread -lX11 -lXxf86vm -lXrandr -lXi
/usr/bin/ld: cannot find -lXxf86vm
/usr/bin/ld: cannot find -lXi
collect2: error: ld returned 1 exit status
make: *** [Makefile:5: VulkanTest] Error 1

Without these options, I think it works like below.

$ make test
g++ -std=c++17 -O2 -o VulkanTest main.cpp -lglfw -lvulkan -ldl -lpthread -lX11 -lXrandr
./VulkanTest
18 extensions supported

Is it better to manually install libraries?

[fake-rookie]

i think you maybe need check the Library Name on Ubuntu.
Ubuntu always chage name of library.

[Overv]

That just means that you are missing the packages libxxf86vm-dev libxi-dev. I'll mention that in the tutorial.