Merge pull request #163 from alicevision/dev/cmake-native-cuda-jetson

First-order CUDA followup fix: explicit CC list for Jetson and Tegra platforms

CMakeLists.txt

@@ -1,17 +1,27 @@
 # First-order language CUDA requires at least CMake 3.18
 cmake_minimum_required(VERSION 3.24)
 
+# Default seletion of CUDA Compute Capabilities.
+# This must be called before project() or cmake sets it to the oldest non-deprecated CC
+# "all" and "all-major" work for Intel and perhaps for ARM with discrete GPUs, but not Tegra and Jetson.
+if(EXISTS "/etc/nv_tegra_release")
+  # The CC list for Tegras and Jetson will require manual updates
+  set(CMAKE_CUDA_ARCHITECTURES "53;62;72;87"
+      CACHE
+      STRING "Which CUDA CCs to support: native, all, all-major or an explicit list delimited by semicolons")
+else()
+  # The CC list for discrete GPUs will require CMake updates
+  set(CMAKE_CUDA_ARCHITECTURES "all-major"
+      CACHE
+      STRING "Which CUDA CCs to support: native, all, all-major or an explicit list delimited by semicolons")
+endif()
+
 project(PopSift VERSION 1.0.0 LANGUAGES CXX CUDA)
 
 # Policy to support CUDA as a first-order language for CMake.
 # Since CMake 3.18. See https://cmake.org/cmake/help/latest/policy/CMP0104.html
 cmake_policy(SET CMP0104 NEW)
 
-set(CMAKE_CUDA_ARCHITECTURES "all-major"
-    CACHE
-    STRING "Which CUDA CCs to support: native, all, all-major or an explicit list delimited by semicolons"
-    FORCE)
-
 # Set build path as a folder named as the platform (linux, windows, darwin...) plus the processor type
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")