Cuda: Add test for -isystem/usr/include

test cases/cuda/8 release/meson.build

@@ -1,4 +1,10 @@
-project('release', 'cuda', version : '1.0.0', default_options : ['buildtype=release', 'b_ndebug=if-release'])
+project('release', 'cpp', 'cuda', version : '1.0.0', default_options : ['buildtype=release', 'b_ndebug=if-release'])
 
-exe = executable('prog', 'main.cu')
+# We don't actually need boost, but it serves as a common dependency
+# that has the potential to add "-isystem/usr/include" to the compile
+# line. By making it optional, we test that system search paths get
+# removed without unnecessarily failing the test if boost is absent.
+boost_dep = dependency('boost', include_type : 'system', required : false)
+
+exe = executable('prog', 'main.cu', dependencies : boost_dep)
 test('cudatest', exe)