FindCUDA: Take NVCC include directories from target properties

Fixes issue where include directories specified on the target are
not passed on to NVCC.  This includes both target_include_directories()
as well as include directories added by dependency chaining.

Closes: #14201

Author: Peter Boettcher

Modules/FindCUDA.cmake

@@ -730,7 +730,7 @@ else()
 endif()
 
 # Set the user list of include dir to nothing to initialize it.
-set (CUDA_NVCC_INCLUDE_ARGS_USER "")
+set (CUDA_NVCC_INCLUDE_DIRS_USER "")
 set (CUDA_INCLUDE_DIRS ${CUDA_TOOLKIT_INCLUDE})
 
 macro(cuda_find_library_local_first_with_path_ext _var _names _doc _path_ext )
@@ -1025,7 +1025,7 @@ find_package_handle_standard_args(CUDA
 # Add include directories to pass to the nvcc command.
 macro(CUDA_INCLUDE_DIRECTORIES)
   foreach(dir ${ARGN})
-    list(APPEND CUDA_NVCC_INCLUDE_ARGS_USER -I${dir})
+    list(APPEND CUDA_NVCC_INCLUDE_DIRS_USER ${dir})
   endforeach()
 endmacro()
 
@@ -1249,17 +1249,15 @@ macro(CUDA_WRAP_SRCS cuda_target format generated_files)
   endif()
 
   # Initialize our list of includes with the user ones followed by the CUDA system ones.
-  set(CUDA_NVCC_INCLUDE_ARGS ${CUDA_NVCC_INCLUDE_ARGS_USER} "-I${CUDA_INCLUDE_DIRS}")
-  # Get the include directories for this directory and use them for our nvcc command.
-  # Remove duplicate entries which may be present since include_directories
-  # in CMake >= 2.8.8 does not remove them.
-  get_directory_property(CUDA_NVCC_INCLUDE_DIRECTORIES INCLUDE_DIRECTORIES)
-  list(REMOVE_DUPLICATES CUDA_NVCC_INCLUDE_DIRECTORIES)
-  if(CUDA_NVCC_INCLUDE_DIRECTORIES)
-    foreach(dir ${CUDA_NVCC_INCLUDE_DIRECTORIES})
-      list(APPEND CUDA_NVCC_INCLUDE_ARGS -I${dir})
-    endforeach()
-  endif()
+  set(CUDA_NVCC_INCLUDE_DIRS ${CUDA_NVCC_INCLUDE_DIRS_USER} "${CUDA_INCLUDE_DIRS}")
+  # Append the include directories for this target via generator expression, which is
+  # expanded by the FILE(GENERATE) call below.  This generator expression captures all
+  # include dirs set by the user, whether via directory properties or target properties
+  list(APPEND CUDA_NVCC_INCLUDE_DIRS "$<TARGET_PROPERTY:${cuda_target},INCLUDE_DIRECTORIES>")
+
+  # Do the same thing with compile definitions
+  set(CUDA_NVCC_COMPILE_DEFINITIONS "$<TARGET_PROPERTY:${cuda_target},COMPILE_DEFINITIONS>")
+
 
   # Reset these variables
   set(CUDA_WRAP_OPTION_NVCC_FLAGS)
@@ -1349,14 +1347,6 @@ macro(CUDA_WRAP_SRCS cuda_target format generated_files)
     string(REGEX REPLACE "[-]+std=c\\+\\+11" "" _cuda_host_flags "${_cuda_host_flags}")
   endif()
 
-  # Get the list of definitions from the directory property
-  get_directory_property(CUDA_NVCC_DEFINITIONS COMPILE_DEFINITIONS)
-  if(CUDA_NVCC_DEFINITIONS)
-    foreach(_definition ${CUDA_NVCC_DEFINITIONS})
-      list(APPEND nvcc_flags "-D${_definition}")
-    endforeach()
-  endif()
-
   if(_cuda_build_shared_libs)
     list(APPEND nvcc_flags "-D${cuda_target}_EXPORTS")
   endif()

Modules/FindCUDA/run_nvcc.cmake

@@ -73,10 +73,25 @@ set(CUDA_NVCC_EXECUTABLE "@CUDA_NVCC_EXECUTABLE@") # path
 set(CUDA_NVCC_FLAGS @CUDA_NVCC_FLAGS@ ;; @CUDA_WRAP_OPTION_NVCC_FLAGS@) # list
 @CUDA_NVCC_FLAGS_CONFIG@
 set(nvcc_flags @nvcc_flags@) # list
-set(CUDA_NVCC_INCLUDE_ARGS "@CUDA_NVCC_INCLUDE_ARGS@") # list (needs to be in quotes to handle spaces properly).
+set(CUDA_NVCC_INCLUDE_DIRS "@CUDA_NVCC_INCLUDE_DIRS@") # list (needs to be in quotes to handle spaces properly).
+set(CUDA_NVCC_COMPILE_DEFINITIONS "@CUDA_NVCC_COMPILE_DEFINITIONS@") # list (needs to be in quotes to handle spaces properly).
 set(format_flag "@format_flag@") # string
 set(cuda_language_flag @cuda_language_flag@) # list
 
+# Clean up list of include directories and add -I flags
+list(REMOVE_DUPLICATES CUDA_NVCC_INCLUDE_DIRS)
+set(CUDA_NVCC_INCLUDE_ARGS)
+foreach(dir ${CUDA_NVCC_INCLUDE_DIRS})
+  # Extra quotes are added around each flag to help nvcc parse out flags with spaces.
+  list(APPEND CUDA_NVCC_INCLUDE_ARGS "-I${dir}")
+endforeach()
+
+# Clean up list of compile definitions, add -D flags, and append to nvcc_flags
+list(REMOVE_DUPLICATES CUDA_NVCC_COMPILE_DEFINITIONS)
+foreach(def ${CUDA_NVCC_COMPILE_DEFINITIONS})
+  list(APPEND nvcc_flags "-D${def}")
+endforeach()
+
 if(build_cubin AND NOT generated_cubin_file)
   message(FATAL_ERROR "You must specify generated_cubin_file on the command line")
 endif()