Compiling GTK4 in windows with Vulkan
GTK4 is already available for download as "mingw-w64-x86_64-gtk4" you can type "pacman -S mingw-w64-x86_64-gtk4" to install it
Below steps are useful if you want to customize and install GTK4 with vulkan
Step 1 download and install MSYS2
Step 3 Install toolchains