From 4e09f3b64a8ed9b5fa3d0a2bab10baad332620db Mon Sep 17 00:00:00 2001
From: TJU_Lu <lqzx1998@tju.edu.cn>
Date: Sat, 21 Jun 2025 14:52:53 +0800
Subject: [PATCH] Add abort when CUDA Arch auto-detection failed

---
 Simulator/src/CMakeLists.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Simulator/src/CMakeLists.txt b/Simulator/src/CMakeLists.txt
index 83ed847..64fd324 100644
--- a/Simulator/src/CMakeLists.txt
+++ b/Simulator/src/CMakeLists.txt
@@ -23,6 +23,13 @@ message(WARNING "OpenCV_VERSION: ${OpenCV_VERSION}")
 find_package(CUDA REQUIRED)
 # Query the GPU architecture
 cuda_select_nvcc_arch_flags(ARCH_FLAGS)
+if("${ARCH_FLAGS}" STREQUAL "")
+  message(FATAL_ERROR
+    "Failed to automatically detect CUDA architecture. "
+    "Please manually set ARCH_FLAGS in CMakeList.txt (line 25) based on your device, for example:\n"
+    "  set(ARCH_FLAGS \"-gencode arch=compute_86,code=sm_86\")"
+  )
+endif()
 message(WARNING "CUDA Architecture: ${ARCH_FLAGS}")
 set(CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS} ${ARCH_FLAGS}")