CMake: replace FindCUDA with FindCUDAToolkit and use CMAKE_CUDA_ARCHITECTURES

Author: Puerling

CMakeLists.txt

@@ -1,5 +1,5 @@
 ######### CMake Version ############################################
-cmake_minimum_required( VERSION 3.15 )
+cmake_minimum_required( VERSION 3.18 )
 ### Distinguish between Clang and AppleClang
 cmake_policy( SET CMP0025 NEW )
 ### Allow finding python virtual-environments

core/CMakeLists.txt

@@ -3,7 +3,7 @@ MESSAGE( STATUS ">> --------------------- Spirit -------------------------------
 
 
 ######### CMake Version ############################################
-cmake_minimum_required( VERSION 3.15 FATAL_ERROR )
+cmake_minimum_required( VERSION 3.18 FATAL_ERROR )
 ####################################################################
 
 
@@ -68,6 +68,7 @@ if( SPIRIT_USE_CUDA )
     set( SPIRIT_USE_FFTW         OFF )
     ### Enable CUDA language support
     enable_language( CUDA )
+    set( CMAKE_CUDA_ARCHITECTURES "${SPIRIT_CUDA_ARCH}" )
 endif()
 #-----
 if( SPIRIT_USE_STDPAR )
@@ -146,17 +147,17 @@ include(CompilerFlags)
 ######### CUDA decisions ###########################################
 if( SPIRIT_USE_CUDA )
     # set( CUDA_TOOLKIT_ROOT_DIR /opt/cuda )
-    find_package( CUDA 8 REQUIRED )
+    find_package( CUDAToolkit 12 REQUIRED )
 
     # set( CUDA_PROPAGATE_HOST_FLAGS ON )
     # --std=c++17 flag may be necessary, but it is propagated from global flags...
     # if it appears twice, for some reason the compilation breaks
 
-    set( SPIRIT_CUDA_LIBS "${CUDA_LIBRARIES};${CUDA_CUFFT_LIBRARIES};${CUDA_curand_LIBRARY}" )
-    set( FFT_LIB          ${CUDA_CUFFT_LIBRARIES} )
+    set( SPIRIT_CUDA_LIBS "CUDA::cudart;CUDA::cufft;CUDA::curand" )
+    set( FFT_LIB           CUDA::cufft )
 
     if( "${CMAKE_CUDA_COMPILER_ID}" MATCHES "NVIDIA" ) 
-        set( CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} -lineinfo -arch=sm_${SPIRIT_CUDA_ARCH} --expt-relaxed-constexpr --expt-extended-lambda" )
+        set( CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} -lineinfo --expt-relaxed-constexpr --expt-extended-lambda" )
         ### Deactivate CUDA warning inside Eigen such as "warning: __host__ annotation is ignored on a function("Quaternion") that is explicitly defaulted on its first declaration"
         set( CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} --diag-suppress=20011 --diag-suppress=20012 --diag-suppress=20014 --diag-suppress=1675")
         ### Display warning number when writing a warning