From 92ab334fea1c6541d32fd684e73ab0d9c942f876 Mon Sep 17 00:00:00 2001
From: Mark Abraham <mark.j.abraham@gmail.com>
Date: Mon, 4 Jul 2016 23:28:01 +0000
Subject: [PATCH] Fix build if libcuda is found but nvcc is not

We require nvcc to be found by find_package, so this commit makes that
explicit. Otherwise the code doesn't understand CUDA_MAJOR_VERSION,
nor why we are setting cache variables that have no value to advanced.

Change-Id: Id7ebde308d268bf225f4b1220bc2b20c0e3e6da1
---
 cmake/gmxManageGPU.cmake | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cmake/gmxManageGPU.cmake b/cmake/gmxManageGPU.cmake
index 208b47f96d..a6b5439303 100644
--- a/cmake/gmxManageGPU.cmake
+++ b/cmake/gmxManageGPU.cmake
@@ -232,6 +232,10 @@ include(CMakeDependentOption)
 include(gmxOptionUtilities)
 macro(gmx_gpu_setup)
     if(GMX_GPU)
+        if(NOT CUDA_NVCC_EXECUTABLE)
+            message(FATAL_ERROR "nvcc is required for a CUDA build, please set CUDA_TOOLKIT_ROOT_DIR appropriately")
+        endif()
+
         # set up nvcc options
         include(gmxManageNvccConfig)
 
-- 
2.11.4.GIT