CUDA: Detect the toolkit include directories

The `nvcc -v` output provides what include directories need to be added
to use the CUDA toolkit from other languages ( C/C++ ).

4 files changed, 31 insertions, 0 deletions

diff --git a/Tests/Cuda/CMakeLists.txt b/Tests/Cuda/CMakeLists.txt
index 40c9675..42b00e1 100644
--- a/Tests/Cuda/CMakeLists.txt
+++ b/Tests/Cuda/CMakeLists.txt
@@ -2,4 +2,5 @@
 ADD_TEST_MACRO(Cuda.Complex CudaComplex)
 ADD_TEST_MACRO(Cuda.ConsumeCompileFeatures CudaConsumeCompileFeatures)
 ADD_TEST_MACRO(Cuda.ObjectLibrary CudaObjectLibrary)
+ADD_TEST_MACRO(Cuda.ToolkitInclude CudaToolkitInclude)
 ADD_TEST_MACRO(Cuda.ProperLinkFlags ProperLinkFlags)
diff --git a/Tests/Cuda/ToolkitInclude/CMakeLists.txt b/Tests/Cuda/ToolkitInclude/CMakeLists.txt
new file mode 100644
index 0000000..f246b54
--- /dev/null
+++ b/Tests/Cuda/ToolkitInclude/CMakeLists.txt
@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.8)
+project (ToolkitInclude CXX CUDA)
+
+#Goal for this example:
+# Validate that between the CXX implicit include directories and the
+# CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES directories we can find
+# the cuda runtime headers
+
+add_executable(CudaToolkitInclude main.cpp)
+target_include_directories(CudaToolkitInclude PRIVATE
+                           ${CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES})
diff --git a/Tests/Cuda/ToolkitInclude/main.cpp b/Tests/Cuda/ToolkitInclude/main.cpp
new file mode 100644
index 0000000..c8d5c6b
--- /dev/null
+++ b/Tests/Cuda/ToolkitInclude/main.cpp
@@ -0,0 +1,8 @@
+// Only thing we care about is that these headers are found
+#include <cuda.h>
+#include <cuda_runtime_api.h>
+
+int main()
+{
+  return 0;
+}
diff --git a/Tests/CudaOnly/EnableStandard/CMakeLists.txt b/Tests/CudaOnly/EnableStandard/CMakeLists.txt
index 53b9132..35a1deb 100644
--- a/Tests/CudaOnly/EnableStandard/CMakeLists.txt
+++ b/Tests/CudaOnly/EnableStandard/CMakeLists.txt
@@ -13,3 +13,14 @@ target_link_libraries(CudaOnlyEnableStandard PRIVATE CUDAStatic11 CUDADynamic11)
 
 set_target_properties(CUDAStatic11 CUDADynamic11 PROPERTIES CUDA_STANDARD 11)
 set_target_properties(CUDAStatic11 CUDADynamic11 PROPERTIES CUDA_STANDARD_REQUIRED TRUE)
+
+#Verify CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES
+foreach(dir ${CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES})
+  if(NOT IS_DIRECTORY "${dir}")
+    message(FATAL_ERROR
+      "CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES entry\n"
+      " ${dir}\n"
+      "is not an existing directory."
+      )
+  endif()
+endforeach()