CUDA: Test that CUDA flags are used when device linking executables.

Tests/Cuda/CMakeLists.txt

@@ -2,3 +2,4 @@
 ADD_TEST_MACRO(Cuda.Complex CudaComplex)
 ADD_TEST_MACRO(Cuda.ConsumeCompileFeatures CudaConsumeCompileFeatures)
 ADD_TEST_MACRO(Cuda.ObjectLibrary CudaObjectLibrary)
+ADD_TEST_MACRO(Cuda.ProperLinkFlags ProperLinkFlags)

Tests/Cuda/ProperLinkFlags/CMakeLists.txt

@@ -0,0 +1,20 @@
+
+cmake_minimum_required(VERSION 3.7)
+project (ProperLinkFlags CUDA CXX)
+
+#Goal for this example:
+#Verify that when we have CXX and CUDA enabled and we link an executable that
+#has CUDA and CXX we use the CUDA link flags when doing the device link
+#step
+
+#Specify a set of valid CUDA flags and an invalid set of CXX flags ( for CUDA )
+#to make sure we don't use the CXX flags when linking CUDA executables
+set(CMAKE_CUDA_FLAGS "-arch=sm_35 --use_fast_math")
+set(CMAKE_CXX_FLAGS "-Wall")
+
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CUDA_STANDARD 11)
+add_executable(ProperLinkFlags file1.cu main.cxx)
+
+set_target_properties( ProperLinkFlags
+                       PROPERTIES CUDA_SEPARABLE_COMPILATION ON)

Tests/Cuda/ProperLinkFlags/file1.cu

@@ -0,0 +1,11 @@
+
+#include "file1.h"
+
+result_type __device__ file1_func(int x)
+{
+  __ldg(&x);
+  result_type r;
+  r.input = x;
+  r.sum = x*x;
+  return r;
+}

Tests/Cuda/ProperLinkFlags/file1.h

@@ -0,0 +1,7 @@
+
+#pragma once
+struct result_type
+{
+  int input;
+  int sum;
+};

Tests/Cuda/ProperLinkFlags/main.cxx

@@ -0,0 +1,9 @@
+
+#include <iostream>
+
+#include "file1.h"
+
+int main(int argc, char** argv)
+{
+  return 0;
+}