cuda: avoid test failure without GPU available

test cases/cuda/17 separate compilation linking/meson.build

@@ -11,12 +11,16 @@ add_languages('cuda')
 nvcc = meson.get_compiler('cuda')
 cuda = import('unstable-cuda')
 
-arch_flags = cuda.nvcc_arch_flags(nvcc.version(), 'Auto', detected : ['8.0'])
+arch_flags = cuda.nvcc_arch_flags(nvcc.version(), 'Common')
 
 message('NVCC version:   ' + nvcc.version())
 message('NVCC flags:     ' + ' '.join(arch_flags))
 
 # test device linking with -dc (which is equivalent to `--relocatable-device-code true`)
 lib = static_library('devicefuncs', ['b.cu'], cuda_args : ['-dc'] + arch_flags)
 exe = executable('app', 'main.cu', cuda_args : ['-dc'] + arch_flags, link_with : lib, link_args : arch_flags)
-test('cudatest', exe)
+
+# if we don't have a CUDA-capable GPU available, avoid creating the test
+if run_command('__nvcc_device_query', check : false).returncode() == 0
+  test('cudatest', exe)
+endif