From 7676d4093233efdbde2f28a6041b88c4e08c2484 Mon Sep 17 00:00:00 2001
From: Jeremy Kubica <104161096+jeremykubica@users.noreply.github.com>
Date: Thu, 14 Sep 2023 10:11:43 -0400
Subject: [PATCH] Update CMakeLists.txt

---
 CMakeLists.txt | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 26e00986..4b4b42a5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,11 +5,12 @@ endif()
 
 project(search LANGUAGES CXX)
 
-# Check if we can compile CUDA on this system.                                                                             
+# Check if we can compile CUDA on this system. We have both the
+# CUDA toolkit and the GPU.
 include(CheckLanguage)
 check_language(CUDA)
 
-if(CMAKE_CUDA_COMPILER)
+if(CMAKE_CUDA_COMPILER AND DEFINED CMAKE_CUDA_ARCHITECTURES)
   set(HAVE_CUDA 1)
   enable_language(CUDA)
   add_definitions(-DHAVE_CUDA=1)