Merge pull request #826 from stephenswat/cleanup/remove_dead_check

Remove obsolete Thrust functionality check

Author: stephenswat

extern/cccl/CMakeLists.txt

@@ -41,24 +41,3 @@ set ( CUB_ENABLE_HEADER_TESTING OFF CACHE BOOL "Disable CUB header testing" )
 
 # Get it into the current directory.
 FetchContent_MakeAvailable( CCCL )
-
-# Check if <thrust/pair.h> works out of the box.
-include( CheckCXXSourceCompiles )
-set( CMAKE_REQUIRED_INCLUDES
-   "${CCCL_SOURCE_DIR}/thrust"
-   "${CCCL_SOURCE_DIR}/libcudacxx/include" )
-set( _THRUST_TEST_SOURCE "#include <thrust/pair.h>\nint main() { return 0; }" )
-check_cxx_source_compiles( "${_THRUST_TEST_SOURCE}" TRACCC_THRUST_WORKS )
-# If not, check if the _LIBCUDACXX_STRING_H_HAS_CONST_OVERLOADS flag makes it
-# work.
-if( NOT TRACCC_THRUST_WORKS )
-   set( CMAKE_REQUIRED_DEFINITIONS -D_LIBCUDACXX_STRING_H_HAS_CONST_OVERLOADS )
-   check_cxx_source_compiles( "${_THRUST_TEST_SOURCE}"
-      TRACCC_THRUST_WORKS_WITH_PATCH )
-   if( TRACCC_THRUST_WORKS_WITH_PATCH )
-      target_compile_definitions( _Thrust_Thrust
-         INTERFACE _LIBCUDACXX_STRING_H_HAS_CONST_OVERLOADS )
-   else()
-      message( WARNING "Thrust does not seem to work. The build may fail." )
-   endif()
-endif()