From d4fa0b34c08dcfb11bd285846ee5cc061885033d Mon Sep 17 00:00:00 2001
From: Alexander Karatarakis <alkarata@microsoft.com>
Date: Tue, 7 Feb 2017 17:04:24 -0800
Subject: [PATCH] Add CUDA portfile

The intention of this package is for other packages to declare a dependency on CUDA
---
 ports/cuda/CONTROL        |  3 +++
 ports/cuda/portfile.cmake | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 ports/cuda/CONTROL
 create mode 100644 ports/cuda/portfile.cmake

diff --git a/ports/cuda/CONTROL b/ports/cuda/CONTROL
new file mode 100644
index 0000000000..00df3011c8
--- /dev/null
+++ b/ports/cuda/CONTROL
@@ -0,0 +1,3 @@
+Source: cuda
+Version: 8.0
+Description: A parallel computing platform and programming model
\ No newline at end of file
diff --git a/ports/cuda/portfile.cmake b/ports/cuda/portfile.cmake
new file mode 100644
index 0000000000..3b20afe0fa
--- /dev/null
+++ b/ports/cuda/portfile.cmake
@@ -0,0 +1,34 @@
+# Due to the complexity involved, this package doesn't install CUDA. It instead verifies that CUDA is installed.
+# Other packages can depend on this package to declare a dependency on CUDA.
+# If this package is installed, we assume that CUDA is properly installed.
+
+execute_process(
+        COMMAND nvcc --version
+        OUTPUT_VARIABLE NVCC_OUTPUT
+        RESULT_VARIABLE error_code)
+
+# Sample output
+# NVIDIA (R) Cuda compiler driver
+# Copyright (c) 2005-2016 NVIDIA Corporation
+# Built on Sat_Sep__3_19:05:48_CDT_2016
+# Cuda compilation tools, release 8.0, V8.0.44
+set(CUDA_REQUIRED_VERSION "V8.0.0")
+
+if (${error_code})
+    message(FATAL_ERROR "CUDA is not installed. Before continuing, please download and install CUDA  (${CUDA_REQUIRED_VERSION} or higher) from:"
+                        "\n    https://developer.nvidia.com/cuda-downloads \n")
+endif()
+
+string(REGEX MATCH "V([0-9]+)\\.([0-9]+)\\.([0-9]+)" CUDA_VERSION ${NVCC_OUTPUT})
+message(STATUS "Found CUDA ${CUDA_VERSION}")
+set(CUDA_VERSION_MAJOR ${CMAKE_MATCH_1})
+#set(CUDA_VERSION_MINOR ${CMAKE_MATCH_2})
+#set(CUDA_VERSION_PATCH ${CMAKE_MATCH_3})
+
+
+if (${CUDA_VERSION_MAJOR} LESS 8)
+    message(FATAL_ERROR "CUDA ${CUDA_VERSION} but ${CUDA_REQUIRED_VERSION} is required. Please download and install a more recent version of CUDA from:"
+                        "\n    https://developer.nvidia.com/cuda-downloads \n")
+endif()
+
+SET(VCPKG_POLICY_EMPTY_PACKAGE enabled)
\ No newline at end of file