[regression in 1.37.0 on FreeBSD] filament/backend/src/vulkan/platform/PlatformVulkanAndroidLinuxWindows.cpp:72:6: error: Not a supported Vulkan platform

[yurivict]

Describe the bug

/usr/ports/graphics/filament/work/filament-1.37.0/filament/backend/src/vulkan/platform/PlatformVulkanAndroidLinuxWindows.cpp:72:6: error: Not a supported Vulkan platform
    #error Not a supported Vulkan platform
     ^
/usr/ports/graphics/filament/work/filament-1.37.0/filament/backend/src/vulkan/platform/PlatformVulkanAndroidLinuxWindows.cpp:109:22: error: unused variable 'instance' [-Werror,-Wunused-variable]
    VkInstance const instance = (VkInstance) vkinstance;
                     ^
2 errors generated.

Desktop (please complete the following information):

• OS: [e.g. iOS] FreeBSD 13.2
• GPU: [e.g. NVIDIA GTX 1080] n/a
• Backend: Vulkan

Additional context
1.36.0 didn't have such failure.

[yurivict]

Vulkan is supported on FreeBSD the same way as on Linux.

All ifdefs should be updated accordingly, for example:

-    #elif defined(__linux__) && defined(FILAMENT_SUPPORTS_X11)
+    #elif (defined(__linux__) || defined(__FreeBSD__)) && defined(FILAMENT_SUPPORTS_X11)

[poweifeng]

I did submit a fix, but FreeBSD is not really a supported or validated platform. I think you'd still need a patch like #6057 even with the fix I submitted?