FindCUDA: Add support for compilation to fatbin & cubin modules

Modules/FindCUDA.cmake

@@ -31,8 +31,8 @@
 # The following variables affect the behavior of the macros in the
 # script (in alphebetical order).  Note that any of these flags can be
 # changed multiple times in the same directory before calling
-# CUDA_ADD_EXECUTABLE, CUDA_ADD_LIBRARY, CUDA_COMPILE, CUDA_COMPILE_PTX
-# or CUDA_WRAP_SRCS::
+# CUDA_ADD_EXECUTABLE, CUDA_ADD_LIBRARY, CUDA_COMPILE, CUDA_COMPILE_PTX,
+# CUDA_COMPILE_FATBIN, CUDA_COMPILE_CUBIN or CUDA_WRAP_SRCS::
 #
 #   CUDA_64_BIT_DEVICE_CODE (Default matches host bit size)
 #   -- Set to ON to compile for 64 bit device code, OFF for 32 bit device code.
@@ -152,6 +152,12 @@
 #   CUDA_COMPILE_PTX( generated_files file0 file1 ... [OPTIONS ...] )
 #   -- Returns a list of PTX files generated from the input source files.
 #
+#   CUDA_COMPILE_FATBIN( generated_files file0 file1 ... [OPTIONS ...] )
+#   -- Returns a list of FATBIN files generated from the input source files.
+#
+#   CUDA_COMPILE_CUBIN( generated_files file0 file1 ... [OPTIONS ...] )
+#   -- Returns a list of CUBIN files generated from the input source files.
+#
 #   CUDA_COMPUTE_SEPARABLE_COMPILATION_OBJECT_FILE_NAME( output_file_var
 #                                                        cuda_target
 #                                                        object_files )
@@ -1016,7 +1022,7 @@ endfunction()
 # a .cpp or .ptx file.
 # INPUT:
 #   cuda_target         - Target name
-#   format              - PTX or OBJ
+#   format              - PTX, CUBIN, FATBIN or OBJ
 #   FILE1 .. FILEN      - The remaining arguments are the sources to be wrapped.
 #   OPTIONS             - Extra options to NVCC
 # OUTPUT:
@@ -1202,16 +1208,22 @@ macro(CUDA_WRAP_SRCS cuda_target format generated_files)
         set(_cuda_source_format ${format})
       endif()
 
-      if( ${_cuda_source_format} MATCHES "PTX" )
-        set( compile_to_ptx ON )
-      elseif( ${_cuda_source_format} MATCHES "OBJ")
-        set( compile_to_ptx OFF )
+      if( ${_cuda_source_format} MATCHES "OBJ")
+        set( cuda_compile_to_external_module OFF )
       else()
-        message( FATAL_ERROR "Invalid format flag passed to CUDA_WRAP_SRCS for file '${file}': '${_cuda_source_format}'.  Use OBJ or PTX.")
+        set( cuda_compile_to_external_module ON )
+        if( ${_cuda_source_format} MATCHES "PTX" )
+          set( cuda_compile_to_external_module_type "ptx" )
+        elseif( ${_cuda_source_format} MATCHES "CUBIN")
+          set( cuda_compile_to_external_module_type "cubin" )
+        elseif( ${_cuda_source_format} MATCHES "FATBIN")
+          set( cuda_compile_to_external_module_type "fatbin" )
+        else()
+          message( FATAL_ERROR "Invalid format flag passed to CUDA_WRAP_SRCS for file '${file}': '${_cuda_source_format}'.  Use OBJ, PTX, CUBIN or FATBIN.")
+        endif()
       endif()
 
-
-      if(compile_to_ptx)
+      if(cuda_compile_to_external_module)
         # Don't use any of the host compilation flags for PTX targets.
         set(CUDA_HOST_FLAGS)
         set(CUDA_NVCC_FLAGS_CONFIG)
@@ -1226,7 +1238,7 @@ macro(CUDA_WRAP_SRCS cuda_target format generated_files)
       if(CUDA_GENERATED_OUTPUT_DIR)
         set(cuda_compile_output_dir "${CUDA_GENERATED_OUTPUT_DIR}")
       else()
-        if ( compile_to_ptx )
+        if ( cuda_compile_to_external_module )
           set(cuda_compile_output_dir "${CMAKE_CURRENT_BINARY_DIR}")
         else()
           set(cuda_compile_output_dir "${cuda_compile_intermediate_directory}")
@@ -1236,10 +1248,10 @@ macro(CUDA_WRAP_SRCS cuda_target format generated_files)
       # Add a custom target to generate a c or ptx file. ######################
 
       get_filename_component( basename ${file} NAME )
-      if( compile_to_ptx )
+      if( cuda_compile_to_external_module )
         set(generated_file_path "${cuda_compile_output_dir}")
-        set(generated_file_basename "${cuda_target}_generated_${basename}.ptx")
-        set(format_flag "-ptx")
+        set(generated_file_basename "${cuda_target}_generated_${basename}.${cuda_compile_to_external_module_type}")
+        set(format_flag "-${cuda_compile_to_external_module_type}")
         file(MAKE_DIRECTORY "${cuda_compile_output_dir}")
       else()
         set(generated_file_path "${cuda_compile_output_dir}/${CMAKE_CFG_INTDIR}")
@@ -1262,7 +1274,7 @@ macro(CUDA_WRAP_SRCS cuda_target format generated_files)
       set(custom_target_script "${cuda_compile_intermediate_directory}/${generated_file_basename}.cmake")
 
       # Setup properties for obj files:
-      if( NOT compile_to_ptx )
+      if( NOT cuda_compile_to_external_module )
         set_source_files_properties("${generated_file}"
           PROPERTIES
           EXTERNAL_OBJECT true # This is an object file not to be compiled, but only be linked.
@@ -1277,7 +1289,7 @@ macro(CUDA_WRAP_SRCS cuda_target format generated_files)
         set(source_file "${CMAKE_CURRENT_SOURCE_DIR}/${file}")
       endif()
 
-      if( NOT compile_to_ptx AND CUDA_SEPARABLE_COMPILATION)
+      if( NOT cuda_compile_to_external_module AND CUDA_SEPARABLE_COMPILATION)
         list(APPEND ${cuda_target}_SEPARABLE_COMPILATION_OBJECTS "${generated_file}")
       endif()
 
@@ -1294,7 +1306,7 @@ macro(CUDA_WRAP_SRCS cuda_target format generated_files)
       # Build the NVCC made dependency file ###################################
       set(build_cubin OFF)
       if ( NOT CUDA_BUILD_EMULATION AND CUDA_BUILD_CUBIN )
-         if ( NOT compile_to_ptx )
+         if ( NOT cuda_compile_to_external_module )
            set ( build_cubin ON )
          endif()
       endif()
@@ -1321,8 +1333,8 @@ macro(CUDA_WRAP_SRCS cuda_target format generated_files)
 
       # Create up the comment string
       file(RELATIVE_PATH generated_file_relative_path "${CMAKE_BINARY_DIR}" "${generated_file}")
-      if(compile_to_ptx)
-        set(cuda_build_comment_string "Building NVCC ptx file ${generated_file_relative_path}")
+      if(cuda_compile_to_external_module)
+        set(cuda_build_comment_string "Building NVCC ${cuda_compile_to_external_module_type} file ${generated_file_relative_path}")
       else()
         set(cuda_build_comment_string "Building NVCC (${cuda_build_type}) object ${generated_file_relative_path}")
       endif()
@@ -1552,21 +1564,29 @@ endmacro()
 
 ###############################################################################
 ###############################################################################
-# CUDA COMPILE
+# (Internal) helper for manually added cuda source files with specific targets
 ###############################################################################
 ###############################################################################
-macro(CUDA_COMPILE generated_files)
+macro(cuda_compile_base cuda_target format generated_files)
 
   # Separate the sources from the options
   CUDA_GET_SOURCES_AND_OPTIONS(_sources _cmake_options _options ${ARGN})
   # Create custom commands and targets for each file.
-  CUDA_WRAP_SRCS( cuda_compile OBJ _generated_files ${_sources} ${_cmake_options}
+  CUDA_WRAP_SRCS( ${cuda_target} ${format} _generated_files ${_sources} ${_cmake_options}
     OPTIONS ${_options} )
 
   set( ${generated_files} ${_generated_files})
 
 endmacro()
 
+###############################################################################
+###############################################################################
+# CUDA COMPILE
+###############################################################################
+###############################################################################
+macro(CUDA_COMPILE generated_files)
+  cuda_compile_base(cuda_compile OBJ ${generated_files} ${ARGN})
+endmacro()
 
 ###############################################################################
 ###############################################################################
@@ -1574,17 +1594,28 @@ endmacro()
 ###############################################################################
 ###############################################################################
 macro(CUDA_COMPILE_PTX generated_files)
+  cuda_compile_base(cuda_compile_ptx PTX ${generated_files} ${ARGN})
+endmacro()
 
-  # Separate the sources from the options
-  CUDA_GET_SOURCES_AND_OPTIONS(_sources _cmake_options _options ${ARGN})
-  # Create custom commands and targets for each file.
-  CUDA_WRAP_SRCS( cuda_compile_ptx PTX _generated_files ${_sources} ${_cmake_options}
-    OPTIONS ${_options} )
-
-  set( ${generated_files} ${_generated_files})
+###############################################################################
+###############################################################################
+# CUDA COMPILE FATBIN
+###############################################################################
+###############################################################################
+macro(CUDA_COMPILE_FATBIN generated_files)
+  cuda_compile_base(cuda_compile_fatbin FATBIN ${generated_files} ${ARGN})
+endmacro()
 
+###############################################################################
+###############################################################################
+# CUDA COMPILE CUBIN
+###############################################################################
+###############################################################################
+macro(CUDA_COMPILE_CUBIN generated_files)
+  cuda_compile_base(cuda_compile_cubin CUBIN ${generated_files} ${ARGN})
 endmacro()
 
+
 ###############################################################################
 ###############################################################################
 # CUDA ADD CUFFT TO TARGET