Fix flags with CUDA. Lower CUDA standard to 11

CUDA_STANDARD 17 does not seem to be required to build samples
and breaks with older, but still valid, nvcc compilers.

CMake/build.cmake

@@ -30,10 +30,10 @@ function (_sensei_set_target_properties name)
 
   target_compile_features(${name} PUBLIC cxx_std_11)
   target_compile_options(${name} PUBLIC
-    -Wall -Wextra
+    $<$<NOT:$<COMPILE_LANGUAGE:CUDA>>:-Wall -Wextra>
     # Need to explicitly set optimization level to -O3 because some systems default to -O2
-    $<$<STREQUAL:$<UPPER_CASE:${CMAKE_BUILD_TYPE}>,"Release">:"-03">
-    $<$<STREQUAL:$<CXX_COMPILER_ID>,"AppleClang">:"-stdlib=libc++">)
+    $<$<STREQUAL:$<UPPER_CASE:${CMAKE_BUILD_TYPE}>,"Release">:-03>
+    $<$<STREQUAL:$<CXX_COMPILER_ID>,"AppleClang">:-stdlib=libc++>)
   set_target_properties(${name} PROPERTIES
     ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib
     LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib

CMake/cuda.cmake

@@ -26,7 +26,7 @@ function(sensei_cuda_target)
 
   message(STATUS "Created CUDA target ${CUDA_TGT_TARGET}")
 
-  target_compile_features(${CUDA_TGT_TARGET} PUBLIC cxx_std_11)
+  target_compile_features(${CUDA_TGT_TARGET} PUBLIC cxx_std_17)
 
   set_target_properties(${CUDA_TGT_TARGET} PROPERTIES POSITION_INDEPENDENT_CODE ON)
   set_target_properties(${CUDA_TGT_TARGET} PROPERTIES CUDA_SEPARABLE_COMPILATION ON)