wscript: Fix cuda test to actually work when cuda SDK is not present

The test ended up failing if cuda.h wasn't present, even if cuda.h
isn't used during the actual build.

This test is attempting to establish if the ffmpeg being built
against has dynlink_cuda support. While it might theoretically be
possible to build against the older normally-linked-cuda version
of ffmpeg, it seems more trouble than it's worth.

1 files changed, 2 insertions, 3 deletions

diff --git a/wscript b/wscript
index 056ac1048d..2fe82e1afc 100644
--- a/wscript
+++ b/wscript
@@ -922,9 +922,8 @@ hwaccel_features = [
     }, {
         'name': '--cuda-hwaccel',
         'desc': 'CUDA hwaccel',
-        'func': check_statement('libavutil/hwcontext_cuda.h',
-                                'AVCUDADeviceContextInternal* foo',
-                                use='libav'),
+        'func': check_cc(fragment=load_fragment('cuda.c'),
+                         use='libav'),
     }, {
         'name': 'sse4-intrinsics',
         'desc': 'GCC SSE4 intrinsics for GPU memcpy',