[cmake] switch to FindCUDAToolkit (#6457)

CMakeLists.txt

@@ -200,32 +200,28 @@ if(__INTEGRATE_OPENCL)
 endif()
 
 if(USE_CUDA)
-    find_package(CUDA 11.0 REQUIRED)
-    include_directories(${CUDA_INCLUDE_DIRS})
+    find_package(CUDAToolkit 11.0 REQUIRED)
+    include_directories(${CUDAToolkit_INCLUDE_DIRS})
     set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} -Xcompiler=${OpenMP_CXX_FLAGS} -Xcompiler=-fPIC -Xcompiler=-Wall")
 
     # reference for mapping of CUDA toolkit component versions to supported architectures ("compute capabilities"):
     # https://en.wikipedia.org/wiki/CUDA#GPUs_supported
-    set(CUDA_ARCHS "6.0" "6.1" "6.2" "7.0" "7.5")
-    if(CUDA_VERSION VERSION_GREATER_EQUAL "11.0")
-        list(APPEND CUDA_ARCHS "8.0")
+    set(CUDA_ARCHS "60" "61" "62" "70" "75")
+    if(CUDA_VERSION VERSION_GREATER_EQUAL "110")
+        list(APPEND CUDA_ARCHS "80")
     endif()
-    if(CUDA_VERSION VERSION_GREATER_EQUAL "11.1")
-        list(APPEND CUDA_ARCHS "8.6")
+    if(CUDA_VERSION VERSION_GREATER_EQUAL "111")
+        list(APPEND CUDA_ARCHS "86")
     endif()
-    if(CUDA_VERSION VERSION_GREATER_EQUAL "11.5")
-        list(APPEND CUDA_ARCHS "8.7")
+    if(CUDA_VERSION VERSION_GREATER_EQUAL "115")
+        list(APPEND CUDA_ARCHS "87")
     endif()
-    if(CUDA_VERSION VERSION_GREATER_EQUAL "11.8")
-        list(APPEND CUDA_ARCHS "8.9")
-        list(APPEND CUDA_ARCHS "9.0")
+    if(CUDA_VERSION VERSION_GREATER_EQUAL "118")
+        list(APPEND CUDA_ARCHS "89")
+        list(APPEND CUDA_ARCHS "90")
     endif()
     list(POP_BACK CUDA_ARCHS CUDA_LAST_SUPPORTED_ARCH)
     list(APPEND CUDA_ARCHS "${CUDA_LAST_SUPPORTED_ARCH}+PTX")
-    cuda_select_nvcc_arch_flags(CUDA_ARCH_FLAGS ${CUDA_ARCHS})
-    string(REPLACE ";" " " CUDA_ARCH_FLAGS "${CUDA_ARCH_FLAGS}")
-
-    set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} ${CUDA_ARCH_FLAGS}")
     if(USE_DEBUG)
       set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} -g")
     else()
@@ -262,7 +258,7 @@ if(USE_CUDA)
     function(add_histogram hsize hname hadd hconst hdir)
       add_library(histo${hsize}${hname} OBJECT src/treelearner/kernels/histogram${hsize}.cu)
       set_target_properties(histo${hsize}${hname} PROPERTIES CUDA_SEPARABLE_COMPILATION ON)
-      set_target_properties(histo${hsize}${hname} PROPERTIES CUDA_ARCHITECTURES OFF)
+      set_target_properties(histo${hsize}${hname} PROPERTIES CUDA_ARCHITECTURES ${CUDA_ARCHS})
       if(hadd)
         list(APPEND histograms histo${hsize}${hname})
         set(histograms ${histograms} PARENT_SCOPE)
@@ -608,13 +604,10 @@ if(__INTEGRATE_OPENCL)
 endif()
 
 if(USE_CUDA)
-  # Disable cmake warning about policy CMP0104. Refer to issue #3754 and PR #4268.
-  # Custom target properties does not propagate, thus we need to specify for
-  # each target that contains or depends on cuda source.
-  set_target_properties(lightgbm_objs PROPERTIES CUDA_ARCHITECTURES OFF)
-  set_target_properties(_lightgbm PROPERTIES CUDA_ARCHITECTURES OFF)
+  set_target_properties(lightgbm_objs PROPERTIES CUDA_ARCHITECTURES ${CUDA_ARCHS})
+  set_target_properties(_lightgbm PROPERTIES CUDA_ARCHITECTURES ${CUDA_ARCHS})
   if(BUILD_CLI)
-    set_target_properties(lightgbm PROPERTIES CUDA_ARCHITECTURES OFF)
+    set_target_properties(lightgbm PROPERTIES CUDA_ARCHITECTURES ${CUDA_ARCHS})
   endif()
 
   set_target_properties(lightgbm_objs PROPERTIES CUDA_SEPARABLE_COMPILATION ON)