[Mesa-dev] seems meson vulkan build is currently broken on travis

[Gert Wollny]

By testing my own patches I saw that the meson/vulcan specific build
failed on travis: 

https://travis-ci.org/gerddie/mesa/builds/288995180

To check that it is not related to my changes I also did that specific 
build with the latest git master (35c66f3e4017) that failed. 

https://travis-ci.org/gerddie/mesa/jobs/289010988

Build log tail: 

/home/travis/build/gerddie/mesa/_build/../src/amd/vulkan/radv_device.c:
301: undefined reference to `radv_instance_extension_supported'

src/amd/vulkan/vulkan_radeon at sha/radv_device.c.o: In function
`radv_GetPhysicalDeviceProperties':

/home/travis/build/gerddie/mesa/_build/../src/amd/vulkan/radv_device.c:
635: undefined reference to `radv_physical_device_api_version'

src/amd/vulkan/vulkan_radeon at sha/radv_device.c.o: In function
`radv_CreateDevice':

/home/travis/build/gerddie/mesa/_build/../src/amd/vulkan/radv_device.c:
926: undefined reference to `radv_physical_device_extension_supported'

collect2: error: ld returned 1 exit status

[339/404] Compiling C++ object 'src/intel/compiler/intel_compiler at sta/b
rw_vec4_visitor.cpp.o'.

ninja: build stopped: subcommand failed.


Best, 
Gert