From 985ed8ade8b5fb8b4f6f345df0c3a87248e4364a Mon Sep 17 00:00:00 2001
From: Eduard Valeyev <eduard@valeyev.net>
Date: Sun, 24 Dec 2023 16:44:28 -0500
Subject: [PATCH] [cmake] for cmake v3.28 set policy `CMP0146` to `OLD` to
 satisfy BLT that still uses FindCUDA + use CUDA_TOOLKIT_ROOT_DIR to assist
 FindCUDA in finding CUDA toolkit

resolves #438
---
 .gitlab-ci.yml        | 1 +
 external/umpire.cmake | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fd9c49aefa..264b42f0bb 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -15,6 +15,7 @@ variables:
     TA_UT_CTEST_TIMEOUT=3000
     ${TA_PYTHON}
     ${ENABLE_CUDA}
+    CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda
     ${BLA_VENDOR}
     ${BLA_THREADS}
     ${ENABLE_SCALAPACK}
diff --git a/external/umpire.cmake b/external/umpire.cmake
index e61fe832e5..aa98f27b1e 100644
--- a/external/umpire.cmake
+++ b/external/umpire.cmake
@@ -109,6 +109,15 @@ else()
         if (DEFINED CMAKE_CUDA_ARCHITECTURES)
             list(APPEND UMPIRE_CMAKE_ARGS "-DCMAKE_CUDA_ARCHITECTURES=${CMAKE_CUDA_ARCHITECTURES}")
         endif(DEFINED CMAKE_CUDA_ARCHITECTURES)
+        # BLT will need FindCUDA until https://github.com/LLNL/blt/pull/585 is merged
+        # with CMake 3.28.1 needs to set CMP0146 to OLD
+        if (POLICY CMP0146)
+            list(APPEND UMPIRE_CMAKE_ARGS -DCMAKE_POLICY_DEFAULT_CMP0146=OLD)
+        endif()
+        # as of CMake 3.28+ FindCUDA seems to require CUDA_TOOLKIT_ROOT_DIR to be defined
+        if (DEFINED CUDA_TOOLKIT_ROOT_DIR)
+            list(APPEND UMPIRE_CMAKE_ARGS "-DCUDA_TOOLKIT_ROOT_DIR=${CUDA_TOOLKIT_ROOT_DIR}")
+        endif()
     endif(ENABLE_CUDA)
     if (ENABLE_HIP)
         list(APPEND UMPIRE_CMAKE_ARGS