Function vkBuildAccelerationStructuresKHR 

pub unsafe extern "system" fn vkBuildAccelerationStructuresKHR(
    device: VkDevice,
    deferredOperation: VkDeferredOperationKHR,
    infoCount: u32,
    pInfos: *const VkAccelerationStructureBuildGeometryInfoKHR,
    ppBuildRangeInfos: *const *const VkAccelerationStructureBuildRangeInfoKHR,
) -> VkResult

Available if built with prototypes.