1#.rst: 2# FindCUDA 3# -------- 4# 5# Tools for building CUDA C files: libraries and build dependencies. 6# 7# This script locates the NVIDIA CUDA C tools. It should work on linux, 8# windows, and mac and should be reasonably up to date with CUDA C 9# releases. 10# 11# This script makes use of the standard find_package arguments of 12# <VERSION>, REQUIRED and QUIET. CUDA_FOUND will report if an 13# acceptable version of CUDA was found. 14# 15# The script will prompt the user to specify CUDA_TOOLKIT_ROOT_DIR if 16# the prefix cannot be determined by the location of nvcc in the system 17# path and REQUIRED is specified to find_package(). To use a different 18# installed version of the toolkit set the environment variable 19# CUDA_BIN_PATH before running cmake (e.g. 20# CUDA_BIN_PATH=/usr/local/cuda1.0 instead of the default 21# /usr/local/cuda) or set CUDA_TOOLKIT_ROOT_DIR after configuring. If 22# you change the value of CUDA_TOOLKIT_ROOT_DIR, various components that 23# depend on the path will be relocated. 24# 25# It might be necessary to set CUDA_TOOLKIT_ROOT_DIR manually on certain 26# platforms, or to use a cuda runtime not installed in the default 27# location. In newer versions of the toolkit the cuda library is 28# included with the graphics driver- be sure that the driver version 29# matches what is needed by the cuda runtime version. 30# 31# The following variables affect the behavior of the macros in the 32# script (in alphebetical order). Note that any of these flags can be 33# changed multiple times in the same directory before calling 34# CUDA_ADD_EXECUTABLE, CUDA_ADD_LIBRARY, CUDA_COMPILE, CUDA_COMPILE_PTX, 35# CUDA_COMPILE_FATBIN, CUDA_COMPILE_CUBIN or CUDA_WRAP_SRCS:: 36# 37# CUDA_64_BIT_DEVICE_CODE (Default matches host bit size) 38# -- Set to ON to compile for 64 bit device code, OFF for 32 bit device code. 39# Note that making this different from the host code when generating object 40# or C files from CUDA code just won't work, because size_t gets defined by 41# nvcc in the generated source. If you compile to PTX and then load the 42# file yourself, you can mix bit sizes between device and host. 43# 44# CUDA_ATTACH_VS_BUILD_RULE_TO_CUDA_FILE (Default ON) 45# -- Set to ON if you want the custom build rule to be attached to the source 46# file in Visual Studio. Turn OFF if you add the same cuda file to multiple 47# targets. 48# 49# This allows the user to build the target from the CUDA file; however, bad 50# things can happen if the CUDA source file is added to multiple targets. 51# When performing parallel builds it is possible for the custom build 52# command to be run more than once and in parallel causing cryptic build 53# errors. VS runs the rules for every source file in the target, and a 54# source can have only one rule no matter how many projects it is added to. 55# When the rule is run from multiple targets race conditions can occur on 56# the generated file. Eventually everything will get built, but if the user 57# is unaware of this behavior, there may be confusion. It would be nice if 58# this script could detect the reuse of source files across multiple targets 59# and turn the option off for the user, but no good solution could be found. 60# 61# CUDA_BUILD_CUBIN (Default OFF) 62# -- Set to ON to enable and extra compilation pass with the -cubin option in 63# Device mode. The output is parsed and register, shared memory usage is 64# printed during build. 65# 66# CUDA_BUILD_EMULATION (Default OFF for device mode) 67# -- Set to ON for Emulation mode. -D_DEVICEEMU is defined for CUDA C files 68# when CUDA_BUILD_EMULATION is TRUE. 69# 70# CUDA_GENERATED_OUTPUT_DIR (Default CMAKE_CURRENT_BINARY_DIR) 71# -- Set to the path you wish to have the generated files placed. If it is 72# blank output files will be placed in CMAKE_CURRENT_BINARY_DIR. 73# Intermediate files will always be placed in 74# CMAKE_CURRENT_BINARY_DIR/CMakeFiles. 75# 76# CUDA_HOST_COMPILATION_CPP (Default ON) 77# -- Set to OFF for C compilation of host code. 78# 79# CUDA_HOST_COMPILER (Default CMAKE_C_COMPILER, $(VCInstallDir)/bin for VS) 80# -- Set the host compiler to be used by nvcc. Ignored if -ccbin or 81# --compiler-bindir is already present in the CUDA_NVCC_FLAGS or 82# CUDA_NVCC_FLAGS_<CONFIG> variables. For Visual Studio targets 83# $(VCInstallDir)/bin is a special value that expands out to the path when 84# the command is run from withing VS. 85# 86# CUDA_NVCC_FLAGS 87# CUDA_NVCC_FLAGS_<CONFIG> 88# -- Additional NVCC command line arguments. NOTE: multiple arguments must be 89# semi-colon delimited (e.g. --compiler-options;-Wall) 90# 91# CUDA_PROPAGATE_HOST_FLAGS (Default ON) 92# -- Set to ON to propagate CMAKE_{C,CXX}_FLAGS and their configuration 93# dependent counterparts (e.g. CMAKE_C_FLAGS_DEBUG) automatically to the 94# host compiler through nvcc's -Xcompiler flag. This helps make the 95# generated host code match the rest of the system better. Sometimes 96# certain flags give nvcc problems, and this will help you turn the flag 97# propagation off. This does not affect the flags supplied directly to nvcc 98# via CUDA_NVCC_FLAGS or through the OPTION flags specified through 99# CUDA_ADD_LIBRARY, CUDA_ADD_EXECUTABLE, or CUDA_WRAP_SRCS. Flags used for 100# shared library compilation are not affected by this flag. 101# 102# CUDA_SEPARABLE_COMPILATION (Default OFF) 103# -- If set this will enable separable compilation for all CUDA runtime object 104# files. If used outside of CUDA_ADD_EXECUTABLE and CUDA_ADD_LIBRARY 105# (e.g. calling CUDA_WRAP_SRCS directly), 106# CUDA_COMPUTE_SEPARABLE_COMPILATION_OBJECT_FILE_NAME and 107# CUDA_LINK_SEPARABLE_COMPILATION_OBJECTS should be called. 108# 109# CUDA_VERBOSE_BUILD (Default OFF) 110# -- Set to ON to see all the commands used when building the CUDA file. When 111# using a Makefile generator the value defaults to VERBOSE (run make 112# VERBOSE=1 to see output), although setting CUDA_VERBOSE_BUILD to ON will 113# always print the output. 114# 115# The script creates the following macros (in alphebetical order):: 116# 117# CUDA_ADD_CUFFT_TO_TARGET( cuda_target ) 118# -- Adds the cufft library to the target (can be any target). Handles whether 119# you are in emulation mode or not. 120# 121# CUDA_ADD_CUBLAS_TO_TARGET( cuda_target ) 122# -- Adds the cublas library to the target (can be any target). Handles 123# whether you are in emulation mode or not. 124# 125# CUDA_ADD_EXECUTABLE( cuda_target file0 file1 ... 126# [WIN32] [MACOSX_BUNDLE] [EXCLUDE_FROM_ALL] [OPTIONS ...] ) 127# -- Creates an executable "cuda_target" which is made up of the files 128# specified. All of the non CUDA C files are compiled using the standard 129# build rules specified by CMAKE and the cuda files are compiled to object 130# files using nvcc and the host compiler. In addition CUDA_INCLUDE_DIRS is 131# added automatically to include_directories(). Some standard CMake target 132# calls can be used on the target after calling this macro 133# (e.g. set_target_properties and target_link_libraries), but setting 134# properties that adjust compilation flags will not affect code compiled by 135# nvcc. Such flags should be modified before calling CUDA_ADD_EXECUTABLE, 136# CUDA_ADD_LIBRARY or CUDA_WRAP_SRCS. 137# 138# CUDA_ADD_LIBRARY( cuda_target file0 file1 ... 139# [STATIC | SHARED | MODULE] [EXCLUDE_FROM_ALL] [OPTIONS ...] ) 140# -- Same as CUDA_ADD_EXECUTABLE except that a library is created. 141# 142# CUDA_BUILD_CLEAN_TARGET() 143# -- Creates a convience target that deletes all the dependency files 144# generated. You should make clean after running this target to ensure the 145# dependency files get regenerated. 146# 147# CUDA_COMPILE( generated_files file0 file1 ... [STATIC | SHARED | MODULE] 148# [OPTIONS ...] ) 149# -- Returns a list of generated files from the input source files to be used 150# with ADD_LIBRARY or ADD_EXECUTABLE. 151# 152# CUDA_COMPILE_PTX( generated_files file0 file1 ... [OPTIONS ...] ) 153# -- Returns a list of PTX files generated from the input source files. 154# 155# CUDA_COMPILE_FATBIN( generated_files file0 file1 ... [OPTIONS ...] ) 156# -- Returns a list of FATBIN files generated from the input source files. 157# 158# CUDA_COMPILE_CUBIN( generated_files file0 file1 ... [OPTIONS ...] ) 159# -- Returns a list of CUBIN files generated from the input source files. 160# 161# CUDA_COMPUTE_SEPARABLE_COMPILATION_OBJECT_FILE_NAME( output_file_var 162# cuda_target 163# object_files ) 164# -- Compute the name of the intermediate link file used for separable 165# compilation. This file name is typically passed into 166# CUDA_LINK_SEPARABLE_COMPILATION_OBJECTS. output_file_var is produced 167# based on cuda_target the list of objects files that need separable 168# compilation as specified by object_files. If the object_files list is 169# empty, then output_file_var will be empty. This function is called 170# automatically for CUDA_ADD_LIBRARY and CUDA_ADD_EXECUTABLE. Note that 171# this is a function and not a macro. 172# 173# CUDA_INCLUDE_DIRECTORIES( path0 path1 ... ) 174# -- Sets the directories that should be passed to nvcc 175# (e.g. nvcc -Ipath0 -Ipath1 ... ). These paths usually contain other .cu 176# files. 177# 178# 179# 180# CUDA_LINK_SEPARABLE_COMPILATION_OBJECTS( output_file_var cuda_target 181# nvcc_flags object_files) 182# 183# -- Generates the link object required by separable compilation from the given 184# object files. This is called automatically for CUDA_ADD_EXECUTABLE and 185# CUDA_ADD_LIBRARY, but can be called manually when using CUDA_WRAP_SRCS 186# directly. When called from CUDA_ADD_LIBRARY or CUDA_ADD_EXECUTABLE the 187# nvcc_flags passed in are the same as the flags passed in via the OPTIONS 188# argument. The only nvcc flag added automatically is the bitness flag as 189# specified by CUDA_64_BIT_DEVICE_CODE. Note that this is a function 190# instead of a macro. 191# 192# CUDA_WRAP_SRCS ( cuda_target format generated_files file0 file1 ... 193# [STATIC | SHARED | MODULE] [OPTIONS ...] ) 194# -- This is where all the magic happens. CUDA_ADD_EXECUTABLE, 195# CUDA_ADD_LIBRARY, CUDA_COMPILE, and CUDA_COMPILE_PTX all call this 196# function under the hood. 197# 198# Given the list of files (file0 file1 ... fileN) this macro generates 199# custom commands that generate either PTX or linkable objects (use "PTX" or 200# "OBJ" for the format argument to switch). Files that don't end with .cu 201# or have the HEADER_FILE_ONLY property are ignored. 202# 203# The arguments passed in after OPTIONS are extra command line options to 204# give to nvcc. You can also specify per configuration options by 205# specifying the name of the configuration followed by the options. General 206# options must preceed configuration specific options. Not all 207# configurations need to be specified, only the ones provided will be used. 208# 209# OPTIONS -DFLAG=2 "-DFLAG_OTHER=space in flag" 210# DEBUG -g 211# RELEASE --use_fast_math 212# RELWITHDEBINFO --use_fast_math;-g 213# MINSIZEREL --use_fast_math 214# 215# For certain configurations (namely VS generating object files with 216# CUDA_ATTACH_VS_BUILD_RULE_TO_CUDA_FILE set to ON), no generated file will 217# be produced for the given cuda file. This is because when you add the 218# cuda file to Visual Studio it knows that this file produces an object file 219# and will link in the resulting object file automatically. 220# 221# This script will also generate a separate cmake script that is used at 222# build time to invoke nvcc. This is for several reasons. 223# 224# 1. nvcc can return negative numbers as return values which confuses 225# Visual Studio into thinking that the command succeeded. The script now 226# checks the error codes and produces errors when there was a problem. 227# 228# 2. nvcc has been known to not delete incomplete results when it 229# encounters problems. This confuses build systems into thinking the 230# target was generated when in fact an unusable file exists. The script 231# now deletes the output files if there was an error. 232# 233# 3. By putting all the options that affect the build into a file and then 234# make the build rule dependent on the file, the output files will be 235# regenerated when the options change. 236# 237# This script also looks at optional arguments STATIC, SHARED, or MODULE to 238# determine when to target the object compilation for a shared library. 239# BUILD_SHARED_LIBS is ignored in CUDA_WRAP_SRCS, but it is respected in 240# CUDA_ADD_LIBRARY. On some systems special flags are added for building 241# objects intended for shared libraries. A preprocessor macro, 242# <target_name>_EXPORTS is defined when a shared library compilation is 243# detected. 244# 245# Flags passed into add_definitions with -D or /D are passed along to nvcc. 246# 247# 248# 249# The script defines the following variables:: 250# 251# CUDA_VERSION_MAJOR -- The major version of cuda as reported by nvcc. 252# CUDA_VERSION_MINOR -- The minor version. 253# CUDA_VERSION 254# CUDA_VERSION_STRING -- CUDA_VERSION_MAJOR.CUDA_VERSION_MINOR 255# 256# CUDA_TOOLKIT_ROOT_DIR -- Path to the CUDA Toolkit (defined if not set). 257# CUDA_SDK_ROOT_DIR -- Path to the CUDA SDK. Use this to find files in the 258# SDK. This script will not directly support finding 259# specific libraries or headers, as that isn't 260# supported by NVIDIA. If you want to change 261# libraries when the path changes see the 262# FindCUDA.cmake script for an example of how to clear 263# these variables. There are also examples of how to 264# use the CUDA_SDK_ROOT_DIR to locate headers or 265# libraries, if you so choose (at your own risk). 266# CUDA_INCLUDE_DIRS -- Include directory for cuda headers. Added automatically 267# for CUDA_ADD_EXECUTABLE and CUDA_ADD_LIBRARY. 268# CUDA_LIBRARIES -- Cuda RT library. 269# CUDA_CUFFT_LIBRARIES -- Device or emulation library for the Cuda FFT 270# implementation (alternative to: 271# CUDA_ADD_CUFFT_TO_TARGET macro) 272# CUDA_CUBLAS_LIBRARIES -- Device or emulation library for the Cuda BLAS 273# implementation (alterative to: 274# CUDA_ADD_CUBLAS_TO_TARGET macro). 275# CUDA_cupti_LIBRARY -- CUDA Profiling Tools Interface library. 276# Only available for CUDA version 4.0+. 277# CUDA_curand_LIBRARY -- CUDA Random Number Generation library. 278# Only available for CUDA version 3.2+. 279# CUDA_cusparse_LIBRARY -- CUDA Sparse Matrix library. 280# Only available for CUDA version 3.2+. 281# CUDA_npp_LIBRARY -- NVIDIA Performance Primitives lib. 282# Only available for CUDA version 4.0+. 283# CUDA_nppc_LIBRARY -- NVIDIA Performance Primitives lib (core). 284# Only available for CUDA version 5.5+. 285# CUDA_nppi_LIBRARY -- NVIDIA Performance Primitives lib (image processing). 286# Only available for CUDA version 5.5+. 287# CUDA_npps_LIBRARY -- NVIDIA Performance Primitives lib (signal processing). 288# Only available for CUDA version 5.5+. 289# CUDA_nvcuvenc_LIBRARY -- CUDA Video Encoder library. 290# Only available for CUDA version 3.2+. 291# Windows only. 292# CUDA_nvcuvid_LIBRARY -- CUDA Video Decoder library. 293# Only available for CUDA version 3.2+. 294# Windows only. 295# 296 297# James Bigler, NVIDIA Corp (nvidia.com - jbigler) 298# Abe Stephens, SCI Institute -- http://www.sci.utah.edu/~abe/FindCuda.html 299# 300# Copyright (c) 2008 - 2009 NVIDIA Corporation. All rights reserved. 301# 302# Copyright (c) 2007-2009 303# Scientific Computing and Imaging Institute, University of Utah 304# 305# This code is licensed under the MIT License. See the FindCUDA.cmake script 306# for the text of the license. 307 308# The MIT License 309# 310# License for the specific language governing rights and limitations under 311# Permission is hereby granted, free of charge, to any person obtaining a 312# copy of this software and associated documentation files (the "Software"), 313# to deal in the Software without restriction, including without limitation 314# the rights to use, copy, modify, merge, publish, distribute, sublicense, 315# and/or sell copies of the Software, and to permit persons to whom the 316# Software is furnished to do so, subject to the following conditions: 317# 318# The above copyright notice and this permission notice shall be included 319# in all copies or substantial portions of the Software. 320# 321# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 322# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 323# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 324# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 325# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 326# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 327# DEALINGS IN THE SOFTWARE. 328# 329############################################################################### 330 331# FindCUDA.cmake 332 333# This macro helps us find the location of helper files we will need the full path to 334macro(CUDA_FIND_HELPER_FILE _name _extension) 335 set(_full_name "${_name}.${_extension}") 336 # CMAKE_CURRENT_LIST_FILE contains the full path to the file currently being 337 # processed. Using this variable, we can pull out the current path, and 338 # provide a way to get access to the other files we need local to here. 339 get_filename_component(CMAKE_CURRENT_LIST_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH) 340 set(CUDA_${_name} "${CMAKE_CURRENT_LIST_DIR}/FindCUDA/${_full_name}") 341 if(NOT EXISTS "${CUDA_${_name}}") 342 set(error_message "${_full_name} not found in ${CMAKE_CURRENT_LIST_DIR}/FindCUDA") 343 if(CUDA_FIND_REQUIRED) 344 message(FATAL_ERROR "${error_message}") 345 else() 346 if(NOT CUDA_FIND_QUIETLY) 347 message(STATUS "${error_message}") 348 endif() 349 endif() 350 endif() 351 # Set this variable as internal, so the user isn't bugged with it. 352 set(CUDA_${_name} ${CUDA_${_name}} CACHE INTERNAL "Location of ${_full_name}" FORCE) 353endmacro() 354 355##################################################################### 356## CUDA_INCLUDE_NVCC_DEPENDENCIES 357## 358 359# So we want to try and include the dependency file if it exists. If 360# it doesn't exist then we need to create an empty one, so we can 361# include it. 362 363# If it does exist, then we need to check to see if all the files it 364# depends on exist. If they don't then we should clear the dependency 365# file and regenerate it later. This covers the case where a header 366# file has disappeared or moved. 367 368macro(CUDA_INCLUDE_NVCC_DEPENDENCIES dependency_file) 369 set(CUDA_NVCC_DEPEND) 370 set(CUDA_NVCC_DEPEND_REGENERATE FALSE) 371 372 373 # Include the dependency file. Create it first if it doesn't exist . The 374 # INCLUDE puts a dependency that will force CMake to rerun and bring in the 375 # new info when it changes. DO NOT REMOVE THIS (as I did and spent a few 376 # hours figuring out why it didn't work. 377 if(NOT EXISTS ${dependency_file}) 378 file(WRITE ${dependency_file} "#FindCUDA.cmake generated file. Do not edit.\n") 379 endif() 380 # Always include this file to force CMake to run again next 381 # invocation and rebuild the dependencies. 382 #message("including dependency_file = ${dependency_file}") 383 include(${dependency_file}) 384 385 # Now we need to verify the existence of all the included files 386 # here. If they aren't there we need to just blank this variable and 387 # make the file regenerate again. 388# if(DEFINED CUDA_NVCC_DEPEND) 389# message("CUDA_NVCC_DEPEND set") 390# else() 391# message("CUDA_NVCC_DEPEND NOT set") 392# endif() 393 if(CUDA_NVCC_DEPEND) 394 #message("CUDA_NVCC_DEPEND found") 395 foreach(f ${CUDA_NVCC_DEPEND}) 396 # message("searching for ${f}") 397 if(NOT EXISTS ${f}) 398 #message("file ${f} not found") 399 set(CUDA_NVCC_DEPEND_REGENERATE TRUE) 400 endif() 401 endforeach() 402 else() 403 #message("CUDA_NVCC_DEPEND false") 404 # No dependencies, so regenerate the file. 405 set(CUDA_NVCC_DEPEND_REGENERATE TRUE) 406 endif() 407 408 #message("CUDA_NVCC_DEPEND_REGENERATE = ${CUDA_NVCC_DEPEND_REGENERATE}") 409 # No incoming dependencies, so we need to generate them. Make the 410 # output depend on the dependency file itself, which should cause the 411 # rule to re-run. 412 if(CUDA_NVCC_DEPEND_REGENERATE) 413 set(CUDA_NVCC_DEPEND ${dependency_file}) 414 #message("Generating an empty dependency_file: ${dependency_file}") 415 file(WRITE ${dependency_file} "#FindCUDA.cmake generated file. Do not edit.\n") 416 endif() 417 418endmacro() 419 420############################################################################### 421############################################################################### 422# Setup variables' defaults 423############################################################################### 424############################################################################### 425 426# Allow the user to specify if the device code is supposed to be 32 or 64 bit. 427if(CMAKE_SIZEOF_VOID_P EQUAL 8) 428 set(CUDA_64_BIT_DEVICE_CODE_DEFAULT ON) 429else() 430 set(CUDA_64_BIT_DEVICE_CODE_DEFAULT OFF) 431endif() 432option(CUDA_64_BIT_DEVICE_CODE "Compile device code in 64 bit mode" ${CUDA_64_BIT_DEVICE_CODE_DEFAULT}) 433 434# Attach the build rule to the source file in VS. This option 435option(CUDA_ATTACH_VS_BUILD_RULE_TO_CUDA_FILE "Attach the build rule to the CUDA source file. Enable only when the CUDA source file is added to at most one target." ON) 436 437# Prints out extra information about the cuda file during compilation 438option(CUDA_BUILD_CUBIN "Generate and parse .cubin files in Device mode." OFF) 439 440# Set whether we are using emulation or device mode. 441option(CUDA_BUILD_EMULATION "Build in Emulation mode" OFF) 442 443# Where to put the generated output. 444set(CUDA_GENERATED_OUTPUT_DIR "" CACHE PATH "Directory to put all the output files. If blank it will default to the CMAKE_CURRENT_BINARY_DIR") 445 446# Parse HOST_COMPILATION mode. 447option(CUDA_HOST_COMPILATION_CPP "Generated file extension" ON) 448 449# Extra user settable flags 450set(CUDA_NVCC_FLAGS "" CACHE STRING "Semi-colon delimit multiple arguments.") 451 452if(CMAKE_GENERATOR MATCHES "Visual Studio") 453 set(CUDA_HOST_COMPILER "$(VCInstallDir)bin" CACHE FILEPATH "Host side compiler used by NVCC") 454else() 455 # Using cc which is symlink to clang may let NVCC think it is GCC and issue 456 # unhandled -dumpspecs option to clang. Also in case neither 457 # CMAKE_C_COMPILER is defined (project does not use C language) nor 458 # CUDA_HOST_COMPILER is specified manually we should skip -ccbin and let 459 # nvcc use its own default C compiler. 460 if(DEFINED CMAKE_C_COMPILER AND NOT DEFINED CUDA_HOST_COMPILER) 461 get_filename_component(c_compiler_realpath "${CMAKE_C_COMPILER}" REALPATH) 462 else() 463 set(c_compiler_realpath "") 464 endif() 465 set(CUDA_HOST_COMPILER "${c_compiler_realpath}" CACHE FILEPATH "Host side compiler used by NVCC") 466endif() 467 468# Propagate the host flags to the host compiler via -Xcompiler 469option(CUDA_PROPAGATE_HOST_FLAGS "Propage C/CXX_FLAGS and friends to the host compiler via -Xcompile" ON) 470 471# Enable CUDA_SEPARABLE_COMPILATION 472option(CUDA_SEPARABLE_COMPILATION "Compile CUDA objects with separable compilation enabled. Requires CUDA 5.0+" OFF) 473 474# Specifies whether the commands used when compiling the .cu file will be printed out. 475option(CUDA_VERBOSE_BUILD "Print out the commands run while compiling the CUDA source file. With the Makefile generator this defaults to VERBOSE variable specified on the command line, but can be forced on with this option." OFF) 476 477mark_as_advanced( 478 CUDA_64_BIT_DEVICE_CODE 479 CUDA_ATTACH_VS_BUILD_RULE_TO_CUDA_FILE 480 CUDA_GENERATED_OUTPUT_DIR 481 CUDA_HOST_COMPILATION_CPP 482 CUDA_NVCC_FLAGS 483 CUDA_PROPAGATE_HOST_FLAGS 484 ) 485 486# Makefile and similar generators don't define CMAKE_CONFIGURATION_TYPES, so we 487# need to add another entry for the CMAKE_BUILD_TYPE. We also need to add the 488# standerd set of 4 build types (Debug, MinSizeRel, Release, and RelWithDebInfo) 489# for completeness. We need run this loop in order to accomodate the addition 490# of extra configuration types. Duplicate entries will be removed by 491# REMOVE_DUPLICATES. 492set(CUDA_configuration_types ${CMAKE_CONFIGURATION_TYPES} ${CMAKE_BUILD_TYPE} Debug MinSizeRel Release RelWithDebInfo) 493list(REMOVE_DUPLICATES CUDA_configuration_types) 494foreach(config ${CUDA_configuration_types}) 495 string(TOUPPER ${config} config_upper) 496 set(CUDA_NVCC_FLAGS_${config_upper} "" CACHE STRING "Semi-colon delimit multiple arguments.") 497 mark_as_advanced(CUDA_NVCC_FLAGS_${config_upper}) 498endforeach() 499 500############################################################################### 501############################################################################### 502# Locate CUDA, Set Build Type, etc. 503############################################################################### 504############################################################################### 505 506macro(cuda_unset_include_and_libraries) 507 unset(CUDA_TOOLKIT_INCLUDE CACHE) 508 unset(CUDA_CUDART_LIBRARY CACHE) 509 unset(CUDA_CUDA_LIBRARY CACHE) 510 # Make sure you run this before you unset CUDA_VERSION. 511 if(CUDA_VERSION VERSION_EQUAL "3.0") 512 # This only existed in the 3.0 version of the CUDA toolkit 513 unset(CUDA_CUDARTEMU_LIBRARY CACHE) 514 endif() 515 unset(CUDA_cupti_LIBRARY CACHE) 516 unset(CUDA_cublas_LIBRARY CACHE) 517 unset(CUDA_cublasemu_LIBRARY CACHE) 518 unset(CUDA_cufft_LIBRARY CACHE) 519 unset(CUDA_cufftemu_LIBRARY CACHE) 520 unset(CUDA_curand_LIBRARY CACHE) 521 unset(CUDA_cusparse_LIBRARY CACHE) 522 unset(CUDA_npp_LIBRARY CACHE) 523 unset(CUDA_nppc_LIBRARY CACHE) 524 unset(CUDA_nppi_LIBRARY CACHE) 525 unset(CUDA_npps_LIBRARY CACHE) 526 unset(CUDA_nvcuvenc_LIBRARY CACHE) 527 unset(CUDA_nvcuvid_LIBRARY CACHE) 528endmacro() 529 530# Check to see if the CUDA_TOOLKIT_ROOT_DIR and CUDA_SDK_ROOT_DIR have changed, 531# if they have then clear the cache variables, so that will be detected again. 532if(DEFINED CUDA_TOOLKIT_ROOT_DIR_INTERNAL AND (NOT "${CUDA_TOOLKIT_ROOT_DIR}" STREQUAL "${CUDA_TOOLKIT_ROOT_DIR_INTERNAL}")) 533 unset(CUDA_TARGET_TRIPLET CACHE) 534 unset(CUDA_TOOLKIT_TARGET_DIR CACHE) 535 unset(CUDA_NVCC_EXECUTABLE CACHE) 536 unset(CUDA_VERSION CACHE) 537 cuda_unset_include_and_libraries() 538endif() 539 540if(DEFINED CUDA_TARGET_TRIPLET_INTERNAL AND (NOT "${CUDA_TARGET_TRIPLET}" STREQUAL "${CUDA_TARGET_TRIPLET_INTERNAL}") OR 541 (DEFINED CUDA_TOOLKIT_TARGET_DIR AND DEFINED CUDA_TOOLKIT_TARGET_DIR_INTERNAL AND NOT "${CUDA_TOOLKIT_TARGET_DIR}" STREQUAL "${CUDA_TOOLKIT_TARGET_DIR_INTERNAL}")) 542 cuda_unset_include_and_libraries() 543endif() 544 545if(NOT "${CUDA_SDK_ROOT_DIR}" STREQUAL "${CUDA_SDK_ROOT_DIR_INTERNAL}") 546 # No specific variables to catch. Use this kind of code before calling 547 # find_package(CUDA) to clean up any variables that may depend on this path. 548 549 # unset(MY_SPECIAL_CUDA_SDK_INCLUDE_DIR CACHE) 550 # unset(MY_SPECIAL_CUDA_SDK_LIBRARY CACHE) 551endif() 552 553# Search for the cuda distribution. 554if(NOT CUDA_TOOLKIT_ROOT_DIR) 555 556 # Search in the CUDA_BIN_PATH first. 557 find_path(CUDA_TOOLKIT_ROOT_DIR 558 NAMES nvcc nvcc.exe 559 PATHS 560 ENV CUDA_PATH 561 ENV CUDA_BIN_PATH 562 PATH_SUFFIXES bin bin64 563 DOC "Toolkit location." 564 NO_DEFAULT_PATH 565 ) 566 # Now search default paths 567 find_path(CUDA_TOOLKIT_ROOT_DIR 568 NAMES nvcc nvcc.exe 569 PATHS /usr/local/bin 570 /usr/local/cuda/bin 571 DOC "Toolkit location." 572 ) 573 574 if (CUDA_TOOLKIT_ROOT_DIR) 575 string(REGEX REPLACE "[/\\\\]?bin[64]*[/\\\\]?$" "" CUDA_TOOLKIT_ROOT_DIR ${CUDA_TOOLKIT_ROOT_DIR}) 576 # We need to force this back into the cache. 577 set(CUDA_TOOLKIT_ROOT_DIR ${CUDA_TOOLKIT_ROOT_DIR} CACHE PATH "Toolkit location." FORCE) 578 endif() 579 if (NOT EXISTS ${CUDA_TOOLKIT_ROOT_DIR}) 580 if(CUDA_FIND_REQUIRED) 581 message(FATAL_ERROR "Specify CUDA_TOOLKIT_ROOT_DIR") 582 elseif(NOT CUDA_FIND_QUIETLY) 583 message("CUDA_TOOLKIT_ROOT_DIR not found or specified") 584 endif() 585 endif () 586endif () 587 588# CUDA_NVCC_EXECUTABLE 589find_program(CUDA_NVCC_EXECUTABLE 590 NAMES nvcc 591 PATHS "${CUDA_TOOLKIT_ROOT_DIR}" 592 ENV CUDA_PATH 593 ENV CUDA_BIN_PATH 594 PATH_SUFFIXES bin bin64 595 NO_DEFAULT_PATH 596 ) 597# Search default search paths, after we search our own set of paths. 598find_program(CUDA_NVCC_EXECUTABLE nvcc) 599mark_as_advanced(CUDA_NVCC_EXECUTABLE) 600 601if(CUDA_NVCC_EXECUTABLE AND NOT CUDA_VERSION) 602 # Compute the version. 603 execute_process (COMMAND ${CUDA_NVCC_EXECUTABLE} "--version" OUTPUT_VARIABLE NVCC_OUT) 604 string(REGEX REPLACE ".*release ([0-9]+)\\.([0-9]+).*" "\\1" CUDA_VERSION_MAJOR ${NVCC_OUT}) 605 string(REGEX REPLACE ".*release ([0-9]+)\\.([0-9]+).*" "\\2" CUDA_VERSION_MINOR ${NVCC_OUT}) 606 set(CUDA_VERSION "${CUDA_VERSION_MAJOR}.${CUDA_VERSION_MINOR}" CACHE STRING "Version of CUDA as computed from nvcc.") 607 mark_as_advanced(CUDA_VERSION) 608else() 609 # Need to set these based off of the cached value 610 string(REGEX REPLACE "([0-9]+)\\.([0-9]+).*" "\\1" CUDA_VERSION_MAJOR "${CUDA_VERSION}") 611 string(REGEX REPLACE "([0-9]+)\\.([0-9]+).*" "\\2" CUDA_VERSION_MINOR "${CUDA_VERSION}") 612endif() 613 614# Always set this convenience variable 615set(CUDA_VERSION_STRING "${CUDA_VERSION}") 616 617# Target CPU architecture 618if(DEFINED CUDA_TARGET_CPU_ARCH) 619 set(_cuda_target_cpu_arch_initial "${CUDA_TARGET_CPU_ARCH}") 620elseif(CUDA_VERSION VERSION_GREATER "5.0" AND CMAKE_CROSSCOMPILING AND CMAKE_SYSTEM_PROCESSOR MATCHES "^(arm|ARM)") 621 set(_cuda_target_cpu_arch_initial "ARM") 622elseif(CUDA_VERSION VERSION_GREATER "6.5" AND CMAKE_CROSSCOMPILING AND CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64|AARCH64)") 623 set(_cuda_target_cpu_arch_initial "AARCH64") 624else() 625 set(_cuda_target_cpu_arch_initial "") 626endif() 627set(CUDA_TARGET_CPU_ARCH "${_cuda_target_cpu_arch_initial}" CACHE STRING "Specify the name of the class of CPU architecture for which the input files must be compiled.") 628mark_as_advanced(CUDA_TARGET_CPU_ARCH) 629 630# Target OS variant 631if(DEFINED CUDA_TARGET_OS_VARIANT) 632 set(_cuda_target_os_variant_initial "${CUDA_TARGET_OS_VARIANT}") 633else() 634 set(_cuda_target_os_variant_initial "") 635endif() 636set(CUDA_TARGET_OS_VARIANT "${_cuda_target_os_variant_initial}" CACHE STRING "Specify the name of the class of OS for which the input files must be compiled.") 637mark_as_advanced(CUDA_TARGET_OS_VARIANT) 638 639# Target triplet 640if(DEFINED CUDA_TARGET_TRIPLET) 641 set(_cuda_target_triplet_initial "${CUDA_TARGET_TRIPLET}") 642elseif(CUDA_VERSION VERSION_GREATER "5.0" AND CMAKE_CROSSCOMPILING AND "${CUDA_TARGET_CPU_ARCH}" STREQUAL "ARM") 643 if("${CUDA_TARGET_OS_VARIANT}" STREQUAL "Android" AND EXISTS "${CUDA_TOOLKIT_ROOT_DIR}/targets/armv7-linux-androideabi") 644 set(_cuda_target_triplet_initial "armv7-linux-androideabi") 645 elseif(EXISTS "${CUDA_TOOLKIT_ROOT_DIR}/targets/armv7-linux-gnueabihf") 646 set(_cuda_target_triplet_initial "armv7-linux-gnueabihf") 647 endif() 648elseif(CUDA_VERSION VERSION_GREATER "6.5" AND CMAKE_CROSSCOMPILING AND "${CUDA_TARGET_CPU_ARCH}" STREQUAL "AARCH64") 649 if("${CUDA_TARGET_OS_VARIANT}" STREQUAL "Android" AND EXISTS "${CUDA_TOOLKIT_ROOT_DIR}/targets/aarch64-linux-androideabi") 650 set(_cuda_target_triplet_initial "aarch64-linux-androideabi") 651 elseif(EXISTS "${CUDA_TOOLKIT_ROOT_DIR}/targets/aarch64-linux-gnueabihf") 652 set(_cuda_target_triplet_initial "aarch64-linux-gnueabihf") 653 endif() 654endif() 655set(CUDA_TARGET_TRIPLET "${_cuda_target_triplet_initial}" CACHE STRING "Specify the target triplet for which the input files must be compiled.") 656file(GLOB __cuda_available_target_tiplets RELATIVE "${CUDA_TOOLKIT_ROOT_DIR}/targets" "${CUDA_TOOLKIT_ROOT_DIR}/targets/*" ) 657set_property(CACHE CUDA_TARGET_TRIPLET PROPERTY STRINGS ${__cuda_available_target_tiplets}) 658mark_as_advanced(CUDA_TARGET_TRIPLET) 659 660# Target directory 661if(NOT DEFINED CUDA_TOOLKIT_TARGET_DIR AND CUDA_TARGET_TRIPLET AND EXISTS "${CUDA_TOOLKIT_ROOT_DIR}/targets/${CUDA_TARGET_TRIPLET}") 662 set(CUDA_TOOLKIT_TARGET_DIR "${CUDA_TOOLKIT_ROOT_DIR}/targets/${CUDA_TARGET_TRIPLET}") 663endif() 664 665# CUDA_TOOLKIT_INCLUDE 666find_path(CUDA_TOOLKIT_INCLUDE 667 device_functions.h # Header included in toolkit 668 PATHS "${CUDA_TOOLKIT_TARGET_DIR}" "${CUDA_TOOLKIT_ROOT_DIR}" 669 ENV CUDA_PATH 670 ENV CUDA_INC_PATH 671 PATH_SUFFIXES include 672 NO_DEFAULT_PATH 673 ) 674# Search default search paths, after we search our own set of paths. 675find_path(CUDA_TOOLKIT_INCLUDE device_functions.h) 676mark_as_advanced(CUDA_TOOLKIT_INCLUDE) 677 678# Set the user list of include dir to nothing to initialize it. 679set (CUDA_NVCC_INCLUDE_ARGS_USER "") 680set (CUDA_INCLUDE_DIRS ${CUDA_TOOLKIT_INCLUDE}) 681 682macro(cuda_find_library_local_first_with_path_ext _var _names _doc _path_ext ) 683 if(CMAKE_SIZEOF_VOID_P EQUAL 8) 684 # CUDA 3.2+ on Windows moved the library directories, so we need the new 685 # and old paths. 686 set(_cuda_64bit_lib_dir "${_path_ext}lib/x64" "${_path_ext}lib64" "${_path_ext}libx64" ) 687 endif() 688 if(CUDA_VERSION VERSION_GREATER "6.0") 689 set(_cuda_static_lib_names "") 690 foreach(name ${_names}) 691 list(APPEND _cuda_static_lib_names "${name}_static") 692 endforeach() 693 endif() 694 # CUDA 3.2+ on Windows moved the library directories, so we need to new 695 # (lib/Win32) and the old path (lib). 696 find_library(${_var} 697 NAMES ${_names} ${_cuda_static_lib_names} 698 PATHS "${CUDA_TOOLKIT_TARGET_DIR}" "${CUDA_TOOLKIT_ROOT_DIR}" 699 ENV CUDA_PATH 700 ENV CUDA_LIB_PATH 701 PATH_SUFFIXES ${_cuda_64bit_lib_dir} "${_path_ext}lib/Win32" "${_path_ext}lib" "${_path_ext}libWin32" 702 DOC ${_doc} 703 NO_DEFAULT_PATH 704 ) 705 # Search default search paths, after we search our own set of paths. 706 find_library(${_var} 707 NAMES ${_names} ${_cuda_static_lib_names} 708 PATHS "/usr/lib/nvidia-current" 709 DOC ${_doc} 710 ) 711endmacro() 712 713macro(cuda_find_library_local_first _var _names _doc) 714 cuda_find_library_local_first_with_path_ext( "${_var}" "${_names}" "${_doc}" "" ) 715endmacro() 716 717macro(find_library_local_first _var _names _doc ) 718 cuda_find_library_local_first( "${_var}" "${_names}" "${_doc}" "" ) 719endmacro() 720 721 722# CUDA_LIBRARIES 723cuda_find_library_local_first(CUDA_CUDART_LIBRARY cudart "\"cudart\" library") 724if(CUDA_VERSION VERSION_EQUAL "3.0") 725 # The cudartemu library only existed for the 3.0 version of CUDA. 726 cuda_find_library_local_first(CUDA_CUDARTEMU_LIBRARY cudartemu "\"cudartemu\" library") 727 mark_as_advanced( 728 CUDA_CUDARTEMU_LIBRARY 729 ) 730endif() 731 732# CUPTI library showed up in cuda toolkit 4.0 733if(NOT CUDA_VERSION VERSION_LESS "4.0") 734 cuda_find_library_local_first_with_path_ext(CUDA_cupti_LIBRARY cupti "\"cupti\" library" "extras/CUPTI/") 735 mark_as_advanced(CUDA_cupti_LIBRARY) 736endif() 737 738# If we are using emulation mode and we found the cudartemu library then use 739# that one instead of cudart. 740if(CUDA_BUILD_EMULATION AND CUDA_CUDARTEMU_LIBRARY) 741 set(CUDA_LIBRARIES ${CUDA_CUDARTEMU_LIBRARY}) 742else() 743 set(CUDA_LIBRARIES ${CUDA_CUDART_LIBRARY}) 744endif() 745 746# 1.1 toolkit on linux doesn't appear to have a separate library on 747# some platforms. 748cuda_find_library_local_first(CUDA_CUDA_LIBRARY cuda "\"cuda\" library (older versions only).") 749 750mark_as_advanced( 751 CUDA_CUDA_LIBRARY 752 CUDA_CUDART_LIBRARY 753 ) 754 755####################### 756# Look for some of the toolkit helper libraries 757macro(FIND_CUDA_HELPER_LIBS _name) 758 cuda_find_library_local_first(CUDA_${_name}_LIBRARY ${_name} "\"${_name}\" library") 759 mark_as_advanced(CUDA_${_name}_LIBRARY) 760endmacro() 761 762####################### 763# Disable emulation for v3.1 onward 764if(CUDA_VERSION VERSION_GREATER "3.0") 765 if(CUDA_BUILD_EMULATION) 766 message(FATAL_ERROR "CUDA_BUILD_EMULATION is not supported in version 3.1 and onwards. You must disable it to proceed. You have version ${CUDA_VERSION}.") 767 endif() 768endif() 769 770# Search for additional CUDA toolkit libraries. 771if(CUDA_VERSION VERSION_LESS "3.1") 772 # Emulation libraries aren't available in version 3.1 onward. 773 find_cuda_helper_libs(cufftemu) 774 find_cuda_helper_libs(cublasemu) 775endif() 776find_cuda_helper_libs(cufft) 777find_cuda_helper_libs(cublas) 778if(NOT CUDA_VERSION VERSION_LESS "3.2") 779 # cusparse showed up in version 3.2 780 find_cuda_helper_libs(cusparse) 781 find_cuda_helper_libs(curand) 782 if (WIN32) 783 find_cuda_helper_libs(nvcuvenc) 784 find_cuda_helper_libs(nvcuvid) 785 endif() 786endif() 787if(CUDA_VERSION VERSION_GREATER "5.0") 788 # In CUDA 5.5 NPP was splitted onto 3 separate libraries. 789 find_cuda_helper_libs(nppc) 790 find_cuda_helper_libs(nppi) 791 find_cuda_helper_libs(npps) 792 set(CUDA_npp_LIBRARY "${CUDA_nppc_LIBRARY};${CUDA_nppi_LIBRARY};${CUDA_npps_LIBRARY}") 793elseif(NOT CUDA_VERSION VERSION_LESS "4.0") 794 find_cuda_helper_libs(npp) 795endif() 796 797if (CUDA_BUILD_EMULATION) 798 set(CUDA_CUFFT_LIBRARIES ${CUDA_cufftemu_LIBRARY}) 799 set(CUDA_CUBLAS_LIBRARIES ${CUDA_cublasemu_LIBRARY}) 800else() 801 set(CUDA_CUFFT_LIBRARIES ${CUDA_cufft_LIBRARY}) 802 set(CUDA_CUBLAS_LIBRARIES ${CUDA_cublas_LIBRARY}) 803endif() 804 805######################## 806# Look for the SDK stuff. As of CUDA 3.0 NVSDKCUDA_ROOT has been replaced with 807# NVSDKCOMPUTE_ROOT with the old CUDA C contents moved into the C subdirectory 808find_path(CUDA_SDK_ROOT_DIR common/inc/cutil.h 809 HINTS 810 "$ENV{NVSDKCOMPUTE_ROOT}/C" 811 ENV NVSDKCUDA_ROOT 812 "[HKEY_LOCAL_MACHINE\\SOFTWARE\\NVIDIA Corporation\\Installed Products\\NVIDIA SDK 10\\Compute;InstallDir]" 813 PATHS 814 "/Developer/GPU\ Computing/C" 815 ) 816 817# Keep the CUDA_SDK_ROOT_DIR first in order to be able to override the 818# environment variables. 819set(CUDA_SDK_SEARCH_PATH 820 "${CUDA_SDK_ROOT_DIR}" 821 "${CUDA_TOOLKIT_ROOT_DIR}/local/NVSDK0.2" 822 "${CUDA_TOOLKIT_ROOT_DIR}/NVSDK0.2" 823 "${CUDA_TOOLKIT_ROOT_DIR}/NV_CUDA_SDK" 824 "$ENV{HOME}/NVIDIA_CUDA_SDK" 825 "$ENV{HOME}/NVIDIA_CUDA_SDK_MACOSX" 826 "/Developer/CUDA" 827 ) 828 829# Example of how to find an include file from the CUDA_SDK_ROOT_DIR 830 831# find_path(CUDA_CUT_INCLUDE_DIR 832# cutil.h 833# PATHS ${CUDA_SDK_SEARCH_PATH} 834# PATH_SUFFIXES "common/inc" 835# DOC "Location of cutil.h" 836# NO_DEFAULT_PATH 837# ) 838# # Now search system paths 839# find_path(CUDA_CUT_INCLUDE_DIR cutil.h DOC "Location of cutil.h") 840 841# mark_as_advanced(CUDA_CUT_INCLUDE_DIR) 842 843 844# Example of how to find a library in the CUDA_SDK_ROOT_DIR 845 846# # cutil library is called cutil64 for 64 bit builds on windows. We don't want 847# # to get these confused, so we are setting the name based on the word size of 848# # the build. 849 850# if(CMAKE_SIZEOF_VOID_P EQUAL 8) 851# set(cuda_cutil_name cutil64) 852# else() 853# set(cuda_cutil_name cutil32) 854# endif() 855 856# find_library(CUDA_CUT_LIBRARY 857# NAMES cutil ${cuda_cutil_name} 858# PATHS ${CUDA_SDK_SEARCH_PATH} 859# # The new version of the sdk shows up in common/lib, but the old one is in lib 860# PATH_SUFFIXES "common/lib" "lib" 861# DOC "Location of cutil library" 862# NO_DEFAULT_PATH 863# ) 864# # Now search system paths 865# find_library(CUDA_CUT_LIBRARY NAMES cutil ${cuda_cutil_name} DOC "Location of cutil library") 866# mark_as_advanced(CUDA_CUT_LIBRARY) 867# set(CUDA_CUT_LIBRARIES ${CUDA_CUT_LIBRARY}) 868 869 870 871############################# 872# Check for required components 873set(CUDA_FOUND TRUE) 874 875set(CUDA_TOOLKIT_ROOT_DIR_INTERNAL "${CUDA_TOOLKIT_ROOT_DIR}" CACHE INTERNAL 876 "This is the value of the last time CUDA_TOOLKIT_ROOT_DIR was set successfully." FORCE) 877set(CUDA_TARGET_TRIPLET_INTERNAL "${CUDA_TARGET_TRIPLET}" CACHE INTERNAL 878 "This is the value of the last time CUDA_TARGET_TRIPLET was set successfully." FORCE) 879set(CUDA_TOOLKIT_TARGET_DIR_INTERNAL "${CUDA_TOOLKIT_TARGET_DIR}" CACHE INTERNAL 880 "This is the value of the last time CUDA_TOOLKIT_TARGET_DIR was set successfully." FORCE) 881set(CUDA_SDK_ROOT_DIR_INTERNAL "${CUDA_SDK_ROOT_DIR}" CACHE INTERNAL 882 "This is the value of the last time CUDA_SDK_ROOT_DIR was set successfully." FORCE) 883 884include(FindPackageHandleStandardArgs) 885find_package_handle_standard_args(CUDA 886 REQUIRED_VARS 887 CUDA_TOOLKIT_ROOT_DIR 888 CUDA_NVCC_EXECUTABLE 889 CUDA_INCLUDE_DIRS 890 CUDA_CUDART_LIBRARY 891 VERSION_VAR 892 CUDA_VERSION 893 ) 894 895 896 897############################################################################### 898############################################################################### 899# Macros 900############################################################################### 901############################################################################### 902 903############################################################################### 904# Add include directories to pass to the nvcc command. 905macro(CUDA_INCLUDE_DIRECTORIES) 906 foreach(dir ${ARGN}) 907 list(APPEND CUDA_NVCC_INCLUDE_ARGS_USER -I${dir}) 908 endforeach() 909endmacro() 910 911 912############################################################################## 913cuda_find_helper_file(parse_cubin cmake) 914cuda_find_helper_file(make2cmake cmake) 915cuda_find_helper_file(run_nvcc cmake) 916 917############################################################################## 918# Separate the OPTIONS out from the sources 919# 920macro(CUDA_GET_SOURCES_AND_OPTIONS _sources _cmake_options _options) 921 set( ${_sources} ) 922 set( ${_cmake_options} ) 923 set( ${_options} ) 924 set( _found_options FALSE ) 925 foreach(arg ${ARGN}) 926 if("x${arg}" STREQUAL "xOPTIONS") 927 set( _found_options TRUE ) 928 elseif( 929 "x${arg}" STREQUAL "xWIN32" OR 930 "x${arg}" STREQUAL "xMACOSX_BUNDLE" OR 931 "x${arg}" STREQUAL "xEXCLUDE_FROM_ALL" OR 932 "x${arg}" STREQUAL "xSTATIC" OR 933 "x${arg}" STREQUAL "xSHARED" OR 934 "x${arg}" STREQUAL "xMODULE" 935 ) 936 list(APPEND ${_cmake_options} ${arg}) 937 else() 938 if ( _found_options ) 939 list(APPEND ${_options} ${arg}) 940 else() 941 # Assume this is a file 942 list(APPEND ${_sources} ${arg}) 943 endif() 944 endif() 945 endforeach() 946endmacro() 947 948############################################################################## 949# Parse the OPTIONS from ARGN and set the variables prefixed by _option_prefix 950# 951macro(CUDA_PARSE_NVCC_OPTIONS _option_prefix) 952 set( _found_config ) 953 foreach(arg ${ARGN}) 954 # Determine if we are dealing with a perconfiguration flag 955 foreach(config ${CUDA_configuration_types}) 956 string(TOUPPER ${config} config_upper) 957 if (arg STREQUAL "${config_upper}") 958 set( _found_config _${arg}) 959 # Set arg to nothing to keep it from being processed further 960 set( arg ) 961 endif() 962 endforeach() 963 964 if ( arg ) 965 list(APPEND ${_option_prefix}${_found_config} "${arg}") 966 endif() 967 endforeach() 968endmacro() 969 970############################################################################## 971# Helper to add the include directory for CUDA only once 972function(CUDA_ADD_CUDA_INCLUDE_ONCE) 973 get_directory_property(_include_directories INCLUDE_DIRECTORIES) 974 set(_add TRUE) 975 if(_include_directories) 976 foreach(dir ${_include_directories}) 977 if("${dir}" STREQUAL "${CUDA_INCLUDE_DIRS}") 978 set(_add FALSE) 979 endif() 980 endforeach() 981 endif() 982 if(_add) 983 include_directories(${CUDA_INCLUDE_DIRS}) 984 endif() 985endfunction() 986 987function(CUDA_BUILD_SHARED_LIBRARY shared_flag) 988 set(cmake_args ${ARGN}) 989 # If SHARED, MODULE, or STATIC aren't already in the list of arguments, then 990 # add SHARED or STATIC based on the value of BUILD_SHARED_LIBS. 991 list(FIND cmake_args SHARED _cuda_found_SHARED) 992 list(FIND cmake_args MODULE _cuda_found_MODULE) 993 list(FIND cmake_args STATIC _cuda_found_STATIC) 994 if( _cuda_found_SHARED GREATER -1 OR 995 _cuda_found_MODULE GREATER -1 OR 996 _cuda_found_STATIC GREATER -1) 997 set(_cuda_build_shared_libs) 998 else() 999 if (BUILD_SHARED_LIBS) 1000 set(_cuda_build_shared_libs SHARED) 1001 else() 1002 set(_cuda_build_shared_libs STATIC) 1003 endif() 1004 endif() 1005 set(${shared_flag} ${_cuda_build_shared_libs} PARENT_SCOPE) 1006endfunction() 1007 1008############################################################################## 1009# Helper to avoid clashes of files with the same basename but different paths. 1010# This doesn't attempt to do exactly what CMake internals do, which is to only 1011# add this path when there is a conflict, since by the time a second collision 1012# in names is detected it's already too late to fix the first one. For 1013# consistency sake the relative path will be added to all files. 1014function(CUDA_COMPUTE_BUILD_PATH path build_path) 1015 #message("CUDA_COMPUTE_BUILD_PATH([${path}] ${build_path})") 1016 # Only deal with CMake style paths from here on out 1017 file(TO_CMAKE_PATH "${path}" bpath) 1018 if (IS_ABSOLUTE "${bpath}") 1019 # Absolute paths are generally unnessary, especially if something like 1020 # file(GLOB_RECURSE) is used to pick up the files. 1021 1022 string(FIND "${bpath}" "${CMAKE_CURRENT_BINARY_DIR}" _binary_dir_pos) 1023 if (_binary_dir_pos EQUAL 0) 1024 file(RELATIVE_PATH bpath "${CMAKE_CURRENT_BINARY_DIR}" "${bpath}") 1025 else() 1026 file(RELATIVE_PATH bpath "${CMAKE_CURRENT_SOURCE_DIR}" "${bpath}") 1027 endif() 1028 endif() 1029 1030 # This recipe is from cmLocalGenerator::CreateSafeUniqueObjectFileName in the 1031 # CMake source. 1032 1033 # Remove leading / 1034 string(REGEX REPLACE "^[/]+" "" bpath "${bpath}") 1035 # Avoid absolute paths by removing ':' 1036 string(REPLACE ":" "_" bpath "${bpath}") 1037 # Avoid relative paths that go up the tree 1038 string(REPLACE "../" "__/" bpath "${bpath}") 1039 # Avoid spaces 1040 string(REPLACE " " "_" bpath "${bpath}") 1041 1042 # Strip off the filename. I wait until here to do it, since removin the 1043 # basename can make a path that looked like path/../basename turn into 1044 # path/.. (notice the trailing slash). 1045 get_filename_component(bpath "${bpath}" PATH) 1046 1047 set(${build_path} "${bpath}" PARENT_SCOPE) 1048 #message("${build_path} = ${bpath}") 1049endfunction() 1050 1051############################################################################## 1052# This helper macro populates the following variables and setups up custom 1053# commands and targets to invoke the nvcc compiler to generate C or PTX source 1054# dependent upon the format parameter. The compiler is invoked once with -M 1055# to generate a dependency file and a second time with -cuda or -ptx to generate 1056# a .cpp or .ptx file. 1057# INPUT: 1058# cuda_target - Target name 1059# format - PTX, CUBIN, FATBIN or OBJ 1060# FILE1 .. FILEN - The remaining arguments are the sources to be wrapped. 1061# OPTIONS - Extra options to NVCC 1062# OUTPUT: 1063# generated_files - List of generated files 1064############################################################################## 1065############################################################################## 1066 1067macro(CUDA_WRAP_SRCS cuda_target format generated_files) 1068 1069 # If CMake doesn't support separable compilation, complain 1070 if(CUDA_SEPARABLE_COMPILATION AND CMAKE_VERSION VERSION_LESS "2.8.10.1") 1071 message(SEND_ERROR "CUDA_SEPARABLE_COMPILATION isn't supported for CMake versions less than 2.8.10.1") 1072 endif() 1073 1074 # Set up all the command line flags here, so that they can be overridden on a per target basis. 1075 1076 set(nvcc_flags "") 1077 1078 # Emulation if the card isn't present. 1079 if (CUDA_BUILD_EMULATION) 1080 # Emulation. 1081 set(nvcc_flags ${nvcc_flags} --device-emulation -D_DEVICEEMU -g) 1082 else() 1083 # Device mode. No flags necessary. 1084 endif() 1085 1086 if(CUDA_HOST_COMPILATION_CPP) 1087 set(CUDA_C_OR_CXX CXX) 1088 else() 1089 if(CUDA_VERSION VERSION_LESS "3.0") 1090 set(nvcc_flags ${nvcc_flags} --host-compilation C) 1091 else() 1092 message(WARNING "--host-compilation flag is deprecated in CUDA version >= 3.0. Removing --host-compilation C flag" ) 1093 endif() 1094 set(CUDA_C_OR_CXX C) 1095 endif() 1096 1097 set(generated_extension ${CMAKE_${CUDA_C_OR_CXX}_OUTPUT_EXTENSION}) 1098 1099 if(CUDA_64_BIT_DEVICE_CODE) 1100 set(nvcc_flags ${nvcc_flags} -m64) 1101 else() 1102 set(nvcc_flags ${nvcc_flags} -m32) 1103 endif() 1104 1105 if(CUDA_TARGET_CPU_ARCH AND CUDA_VERSION VERSION_LESS "7.0") 1106 # CPU architecture is either ARM or X86. Patch AARCH64 to be ARM 1107 string(REPLACE "AARCH64" "ARM" CUDA_TARGET_CPU_ARCH_patched ${CUDA_TARGET_CPU_ARCH}) 1108 set(nvcc_flags ${nvcc_flags} "--target-cpu-architecture=${CUDA_TARGET_CPU_ARCH_patched}") 1109 endif() 1110 1111 if(CUDA_TARGET_OS_VARIANT AND CUDA_VERSION VERSION_LESS "7.0") 1112 set(nvcc_flags ${nvcc_flags} "-target-os-variant=${CUDA_TARGET_OS_VARIANT}") 1113 endif() 1114 1115 # This needs to be passed in at this stage, because VS needs to fill out the 1116 # value of VCInstallDir from within VS. Note that CCBIN is only used if 1117 # -ccbin or --compiler-bindir isn't used and CUDA_HOST_COMPILER matches 1118 # $(VCInstallDir)/bin. 1119 if(CMAKE_GENERATOR MATCHES "Visual Studio") 1120 set(ccbin_flags -D "\"CCBIN:PATH=$(VCInstallDir)bin\"" ) 1121 else() 1122 set(ccbin_flags) 1123 endif() 1124 1125 # Figure out which configure we will use and pass that in as an argument to 1126 # the script. We need to defer the decision until compilation time, because 1127 # for VS projects we won't know if we are making a debug or release build 1128 # until build time. 1129 if(CMAKE_GENERATOR MATCHES "Visual Studio") 1130 set( CUDA_build_configuration "$(ConfigurationName)" ) 1131 else() 1132 set( CUDA_build_configuration "${CMAKE_BUILD_TYPE}") 1133 endif() 1134 1135 # Initialize our list of includes with the user ones followed by the CUDA system ones. 1136 set(CUDA_NVCC_INCLUDE_ARGS ${CUDA_NVCC_INCLUDE_ARGS_USER} "-I${CUDA_INCLUDE_DIRS}") 1137 # Get the include directories for this directory and use them for our nvcc command. 1138 # Remove duplicate entries which may be present since include_directories 1139 # in CMake >= 2.8.8 does not remove them. 1140 get_directory_property(CUDA_NVCC_INCLUDE_DIRECTORIES INCLUDE_DIRECTORIES) 1141 list(REMOVE_DUPLICATES CUDA_NVCC_INCLUDE_DIRECTORIES) 1142 if(CUDA_NVCC_INCLUDE_DIRECTORIES) 1143 foreach(dir ${CUDA_NVCC_INCLUDE_DIRECTORIES}) 1144 list(APPEND CUDA_NVCC_INCLUDE_ARGS -I${dir}) 1145 endforeach() 1146 endif() 1147 1148 # Reset these variables 1149 set(CUDA_WRAP_OPTION_NVCC_FLAGS) 1150 foreach(config ${CUDA_configuration_types}) 1151 string(TOUPPER ${config} config_upper) 1152 set(CUDA_WRAP_OPTION_NVCC_FLAGS_${config_upper}) 1153 endforeach() 1154 1155 CUDA_GET_SOURCES_AND_OPTIONS(_cuda_wrap_sources _cuda_wrap_cmake_options _cuda_wrap_options ${ARGN}) 1156 CUDA_PARSE_NVCC_OPTIONS(CUDA_WRAP_OPTION_NVCC_FLAGS ${_cuda_wrap_options}) 1157 1158 # Figure out if we are building a shared library. BUILD_SHARED_LIBS is 1159 # respected in CUDA_ADD_LIBRARY. 1160 set(_cuda_build_shared_libs FALSE) 1161 # SHARED, MODULE 1162 list(FIND _cuda_wrap_cmake_options SHARED _cuda_found_SHARED) 1163 list(FIND _cuda_wrap_cmake_options MODULE _cuda_found_MODULE) 1164 if(_cuda_found_SHARED GREATER -1 OR _cuda_found_MODULE GREATER -1) 1165 set(_cuda_build_shared_libs TRUE) 1166 endif() 1167 # STATIC 1168 list(FIND _cuda_wrap_cmake_options STATIC _cuda_found_STATIC) 1169 if(_cuda_found_STATIC GREATER -1) 1170 set(_cuda_build_shared_libs FALSE) 1171 endif() 1172 1173 # CUDA_HOST_FLAGS 1174 if(_cuda_build_shared_libs) 1175 # If we are setting up code for a shared library, then we need to add extra flags for 1176 # compiling objects for shared libraries. 1177 set(CUDA_HOST_SHARED_FLAGS ${CMAKE_SHARED_LIBRARY_${CUDA_C_OR_CXX}_FLAGS}) 1178 else() 1179 set(CUDA_HOST_SHARED_FLAGS) 1180 endif() 1181 # Only add the CMAKE_{C,CXX}_FLAGS if we are propagating host flags. We 1182 # always need to set the SHARED_FLAGS, though. 1183 if(CUDA_PROPAGATE_HOST_FLAGS) 1184 set(_cuda_host_flags "set(CMAKE_HOST_FLAGS ${CMAKE_${CUDA_C_OR_CXX}_FLAGS} ${CUDA_HOST_SHARED_FLAGS})") 1185 else() 1186 set(_cuda_host_flags "set(CMAKE_HOST_FLAGS ${CUDA_HOST_SHARED_FLAGS})") 1187 endif() 1188 1189 set(_cuda_nvcc_flags_config "# Build specific configuration flags") 1190 # Loop over all the configuration types to generate appropriate flags for run_nvcc.cmake 1191 foreach(config ${CUDA_configuration_types}) 1192 string(TOUPPER ${config} config_upper) 1193 # CMAKE_FLAGS are strings and not lists. By not putting quotes around CMAKE_FLAGS 1194 # we convert the strings to lists (like we want). 1195 1196 if(CUDA_PROPAGATE_HOST_FLAGS) 1197 # nvcc chokes on -g3 in versions previous to 3.0, so replace it with -g 1198 set(_cuda_fix_g3 FALSE) 1199 1200 if(CMAKE_COMPILER_IS_GNUCC) 1201 if (CUDA_VERSION VERSION_LESS "3.0" OR 1202 CUDA_VERSION VERSION_EQUAL "4.1" OR 1203 CUDA_VERSION VERSION_EQUAL "4.2" 1204 ) 1205 set(_cuda_fix_g3 TRUE) 1206 endif() 1207 endif() 1208 if(_cuda_fix_g3) 1209 string(REPLACE "-g3" "-g" _cuda_C_FLAGS "${CMAKE_${CUDA_C_OR_CXX}_FLAGS_${config_upper}}") 1210 else() 1211 set(_cuda_C_FLAGS "${CMAKE_${CUDA_C_OR_CXX}_FLAGS_${config_upper}}") 1212 endif() 1213 1214 set(_cuda_host_flags "${_cuda_host_flags}\nset(CMAKE_HOST_FLAGS_${config_upper} ${_cuda_C_FLAGS})") 1215 endif() 1216 1217 # Note that if we ever want CUDA_NVCC_FLAGS_<CONFIG> to be string (instead of a list 1218 # like it is currently), we can remove the quotes around the 1219 # ${CUDA_NVCC_FLAGS_${config_upper}} variable like the CMAKE_HOST_FLAGS_<CONFIG> variable. 1220 set(_cuda_nvcc_flags_config "${_cuda_nvcc_flags_config}\nset(CUDA_NVCC_FLAGS_${config_upper} ${CUDA_NVCC_FLAGS_${config_upper}} ;; ${CUDA_WRAP_OPTION_NVCC_FLAGS_${config_upper}})") 1221 endforeach() 1222 1223 # Get the list of definitions from the directory property 1224 get_directory_property(CUDA_NVCC_DEFINITIONS COMPILE_DEFINITIONS) 1225 if(CUDA_NVCC_DEFINITIONS) 1226 foreach(_definition ${CUDA_NVCC_DEFINITIONS}) 1227 list(APPEND nvcc_flags "-D${_definition}") 1228 endforeach() 1229 endif() 1230 1231 if(_cuda_build_shared_libs) 1232 list(APPEND nvcc_flags "-D${cuda_target}_EXPORTS") 1233 endif() 1234 1235 # Reset the output variable 1236 set(_cuda_wrap_generated_files "") 1237 1238 # Iterate over the macro arguments and create custom 1239 # commands for all the .cu files. 1240 foreach(file ${ARGN}) 1241 # Ignore any file marked as a HEADER_FILE_ONLY 1242 get_source_file_property(_is_header ${file} HEADER_FILE_ONLY) 1243 if(${file} MATCHES "\\.cu$" AND NOT _is_header) 1244 1245 # Allow per source file overrides of the format. 1246 get_source_file_property(_cuda_source_format ${file} CUDA_SOURCE_PROPERTY_FORMAT) 1247 if(NOT _cuda_source_format) 1248 set(_cuda_source_format ${format}) 1249 endif() 1250 1251 if( ${_cuda_source_format} MATCHES "OBJ") 1252 set( cuda_compile_to_external_module OFF ) 1253 else() 1254 set( cuda_compile_to_external_module ON ) 1255 if( ${_cuda_source_format} MATCHES "PTX" ) 1256 set( cuda_compile_to_external_module_type "ptx" ) 1257 elseif( ${_cuda_source_format} MATCHES "CUBIN") 1258 set( cuda_compile_to_external_module_type "cubin" ) 1259 elseif( ${_cuda_source_format} MATCHES "FATBIN") 1260 set( cuda_compile_to_external_module_type "fatbin" ) 1261 else() 1262 message( FATAL_ERROR "Invalid format flag passed to CUDA_WRAP_SRCS for file '${file}': '${_cuda_source_format}'. Use OBJ, PTX, CUBIN or FATBIN.") 1263 endif() 1264 endif() 1265 1266 if(cuda_compile_to_external_module) 1267 # Don't use any of the host compilation flags for PTX targets. 1268 set(CUDA_HOST_FLAGS) 1269 set(CUDA_NVCC_FLAGS_CONFIG) 1270 else() 1271 set(CUDA_HOST_FLAGS ${_cuda_host_flags}) 1272 set(CUDA_NVCC_FLAGS_CONFIG ${_cuda_nvcc_flags_config}) 1273 endif() 1274 1275 # Determine output directory 1276 cuda_compute_build_path("${file}" cuda_build_path) 1277 set(cuda_compile_intermediate_directory "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/${cuda_target}.dir/${cuda_build_path}") 1278 if(CUDA_GENERATED_OUTPUT_DIR) 1279 set(cuda_compile_output_dir "${CUDA_GENERATED_OUTPUT_DIR}") 1280 else() 1281 if ( cuda_compile_to_external_module ) 1282 set(cuda_compile_output_dir "${CMAKE_CURRENT_BINARY_DIR}") 1283 else() 1284 set(cuda_compile_output_dir "${cuda_compile_intermediate_directory}") 1285 endif() 1286 endif() 1287 1288 # Add a custom target to generate a c or ptx file. ###################### 1289 1290 get_filename_component( basename ${file} NAME ) 1291 if( cuda_compile_to_external_module ) 1292 set(generated_file_path "${cuda_compile_output_dir}") 1293 set(generated_file_basename "${cuda_target}_generated_${basename}.${cuda_compile_to_external_module_type}") 1294 set(format_flag "-${cuda_compile_to_external_module_type}") 1295 file(MAKE_DIRECTORY "${cuda_compile_output_dir}") 1296 else() 1297 set(generated_file_path "${cuda_compile_output_dir}/${CMAKE_CFG_INTDIR}") 1298 set(generated_file_basename "${cuda_target}_generated_${basename}${generated_extension}") 1299 if(CUDA_SEPARABLE_COMPILATION) 1300 set(format_flag "-dc") 1301 else() 1302 set(format_flag "-c") 1303 endif() 1304 endif() 1305 1306 # Set all of our file names. Make sure that whatever filenames that have 1307 # generated_file_path in them get passed in through as a command line 1308 # argument, so that the ${CMAKE_CFG_INTDIR} gets expanded at run time 1309 # instead of configure time. 1310 set(generated_file "${generated_file_path}/${generated_file_basename}") 1311 set(cmake_dependency_file "${cuda_compile_intermediate_directory}/${generated_file_basename}.depend") 1312 set(NVCC_generated_dependency_file "${cuda_compile_intermediate_directory}/${generated_file_basename}.NVCC-depend") 1313 set(generated_cubin_file "${generated_file_path}/${generated_file_basename}.cubin.txt") 1314 set(custom_target_script "${cuda_compile_intermediate_directory}/${generated_file_basename}.cmake") 1315 1316 # Setup properties for obj files: 1317 if( NOT cuda_compile_to_external_module ) 1318 set_source_files_properties("${generated_file}" 1319 PROPERTIES 1320 EXTERNAL_OBJECT true # This is an object file not to be compiled, but only be linked. 1321 ) 1322 endif() 1323 1324 # Don't add CMAKE_CURRENT_SOURCE_DIR if the path is already an absolute path. 1325 get_filename_component(file_path "${file}" PATH) 1326 if(IS_ABSOLUTE "${file_path}") 1327 set(source_file "${file}") 1328 else() 1329 set(source_file "${CMAKE_CURRENT_SOURCE_DIR}/${file}") 1330 endif() 1331 1332 if( NOT cuda_compile_to_external_module AND CUDA_SEPARABLE_COMPILATION) 1333 list(APPEND ${cuda_target}_SEPARABLE_COMPILATION_OBJECTS "${generated_file}") 1334 endif() 1335 1336 # Bring in the dependencies. Creates a variable CUDA_NVCC_DEPEND ####### 1337 cuda_include_nvcc_dependencies(${cmake_dependency_file}) 1338 1339 # Convience string for output ########################################### 1340 if(CUDA_BUILD_EMULATION) 1341 set(cuda_build_type "Emulation") 1342 else() 1343 set(cuda_build_type "Device") 1344 endif() 1345 1346 # Build the NVCC made dependency file ################################### 1347 set(build_cubin OFF) 1348 if ( NOT CUDA_BUILD_EMULATION AND CUDA_BUILD_CUBIN ) 1349 if ( NOT cuda_compile_to_external_module ) 1350 set ( build_cubin ON ) 1351 endif() 1352 endif() 1353 1354 # Configure the build script 1355 configure_file("${CUDA_run_nvcc}" "${custom_target_script}" @ONLY) 1356 1357 # So if a user specifies the same cuda file as input more than once, you 1358 # can have bad things happen with dependencies. Here we check an option 1359 # to see if this is the behavior they want. 1360 if(CUDA_ATTACH_VS_BUILD_RULE_TO_CUDA_FILE) 1361 set(main_dep MAIN_DEPENDENCY ${source_file}) 1362 else() 1363 set(main_dep DEPENDS ${source_file}) 1364 endif() 1365 1366 if(CUDA_VERBOSE_BUILD) 1367 set(verbose_output ON) 1368 elseif(CMAKE_GENERATOR MATCHES "Makefiles") 1369 set(verbose_output "$(VERBOSE)") 1370 else() 1371 set(verbose_output OFF) 1372 endif() 1373 1374 # Create up the comment string 1375 file(RELATIVE_PATH generated_file_relative_path "${CMAKE_BINARY_DIR}" "${generated_file}") 1376 if(cuda_compile_to_external_module) 1377 set(cuda_build_comment_string "Building NVCC ${cuda_compile_to_external_module_type} file ${generated_file_relative_path}") 1378 else() 1379 set(cuda_build_comment_string "Building NVCC (${cuda_build_type}) object ${generated_file_relative_path}") 1380 endif() 1381 1382 # Build the generated file and dependency file ########################## 1383 add_custom_command( 1384 OUTPUT ${generated_file} 1385 # These output files depend on the source_file and the contents of cmake_dependency_file 1386 ${main_dep} 1387 DEPENDS ${CUDA_NVCC_DEPEND} 1388 DEPENDS ${custom_target_script} 1389 # Make sure the output directory exists before trying to write to it. 1390 COMMAND ${CMAKE_COMMAND} -E make_directory "${generated_file_path}" 1391 COMMAND ${CMAKE_COMMAND} ARGS 1392 -D verbose:BOOL=${verbose_output} 1393 ${ccbin_flags} 1394 -D build_configuration:STRING=${CUDA_build_configuration} 1395 -D "generated_file:STRING=${generated_file}" 1396 -D "generated_cubin_file:STRING=${generated_cubin_file}" 1397 -P "${custom_target_script}" 1398 WORKING_DIRECTORY "${cuda_compile_intermediate_directory}" 1399 COMMENT "${cuda_build_comment_string}" 1400 ) 1401 1402 # Make sure the build system knows the file is generated. 1403 set_source_files_properties(${generated_file} PROPERTIES GENERATED TRUE) 1404 1405 list(APPEND _cuda_wrap_generated_files ${generated_file}) 1406 1407 # Add the other files that we want cmake to clean on a cleanup ########## 1408 list(APPEND CUDA_ADDITIONAL_CLEAN_FILES "${cmake_dependency_file}") 1409 list(REMOVE_DUPLICATES CUDA_ADDITIONAL_CLEAN_FILES) 1410 set(CUDA_ADDITIONAL_CLEAN_FILES ${CUDA_ADDITIONAL_CLEAN_FILES} CACHE INTERNAL "List of intermediate files that are part of the cuda dependency scanning.") 1411 1412 endif() 1413 endforeach() 1414 1415 # Set the return parameter 1416 set(${generated_files} ${_cuda_wrap_generated_files}) 1417endmacro() 1418 1419function(_cuda_get_important_host_flags important_flags flag_string) 1420 if(CMAKE_GENERATOR MATCHES "Visual Studio") 1421 string(REGEX MATCHALL "/M[DT][d]?" flags ${flag_string}) 1422 list(APPEND ${important_flags} ${flags}) 1423 else() 1424 string(REGEX MATCHALL "-fPIC" flags ${flag_string}) 1425 list(APPEND ${important_flags} ${flags}) 1426 endif() 1427 set(${important_flags} ${${important_flags}} PARENT_SCOPE) 1428endfunction() 1429 1430############################################################################### 1431############################################################################### 1432# Separable Compilation Link 1433############################################################################### 1434############################################################################### 1435 1436# Compute the filename to be used by CUDA_LINK_SEPARABLE_COMPILATION_OBJECTS 1437function(CUDA_COMPUTE_SEPARABLE_COMPILATION_OBJECT_FILE_NAME output_file_var cuda_target object_files) 1438 if (object_files) 1439 set(generated_extension ${CMAKE_${CUDA_C_OR_CXX}_OUTPUT_EXTENSION}) 1440 set(output_file "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/${cuda_target}.dir/${CMAKE_CFG_INTDIR}/${cuda_target}_intermediate_link${generated_extension}") 1441 else() 1442 set(output_file) 1443 endif() 1444 1445 set(${output_file_var} "${output_file}" PARENT_SCOPE) 1446endfunction() 1447 1448# Setup the build rule for the separable compilation intermediate link file. 1449function(CUDA_LINK_SEPARABLE_COMPILATION_OBJECTS output_file cuda_target options object_files) 1450 if (object_files) 1451 1452 set_source_files_properties("${output_file}" 1453 PROPERTIES 1454 EXTERNAL_OBJECT TRUE # This is an object file not to be compiled, but only 1455 # be linked. 1456 GENERATED TRUE # This file is generated during the build 1457 ) 1458 1459 # For now we are ignoring all the configuration specific flags. 1460 set(nvcc_flags) 1461 CUDA_PARSE_NVCC_OPTIONS(nvcc_flags ${options}) 1462 if(CUDA_64_BIT_DEVICE_CODE) 1463 list(APPEND nvcc_flags -m64) 1464 else() 1465 list(APPEND nvcc_flags -m32) 1466 endif() 1467 # If -ccbin, --compiler-bindir has been specified, don't do anything. Otherwise add it here. 1468 list( FIND nvcc_flags "-ccbin" ccbin_found0 ) 1469 list( FIND nvcc_flags "--compiler-bindir" ccbin_found1 ) 1470 if( ccbin_found0 LESS 0 AND ccbin_found1 LESS 0 AND CUDA_HOST_COMPILER ) 1471 list(APPEND nvcc_flags -ccbin "\"${CUDA_HOST_COMPILER}\"") 1472 endif() 1473 # Create a list of flags specified by CUDA_NVCC_FLAGS_${CONFIG} 1474 set(config_specific_flags) 1475 set(flags) 1476 foreach(config ${CUDA_configuration_types}) 1477 string(TOUPPER ${config} config_upper) 1478 # Add config specific flags 1479 foreach(f ${CUDA_NVCC_FLAGS_${config_upper}}) 1480 list(APPEND config_specific_flags $<$<CONFIG:${config}>:${f}>) 1481 endforeach() 1482 set(important_host_flags) 1483 _cuda_get_important_host_flags(important_host_flags ${CMAKE_${CUDA_C_OR_CXX}_FLAGS_${config_upper}}) 1484 foreach(f ${important_host_flags}) 1485 list(APPEND flags $<$<CONFIG:${config}>:-Xcompiler> $<$<CONFIG:${config}>:${f}>) 1486 endforeach() 1487 endforeach() 1488 # Add our general CUDA_NVCC_FLAGS with the configuration specifig flags 1489 set(nvcc_flags ${CUDA_NVCC_FLAGS} ${config_specific_flags} ${nvcc_flags}) 1490 1491 file(RELATIVE_PATH output_file_relative_path "${CMAKE_BINARY_DIR}" "${output_file}") 1492 1493 # Some generators don't handle the multiple levels of custom command 1494 # dependencies correctly (obj1 depends on file1, obj2 depends on obj1), so 1495 # we work around that issue by compiling the intermediate link object as a 1496 # pre-link custom command in that situation. 1497 set(do_obj_build_rule TRUE) 1498 if (MSVC_VERSION GREATER 1599) 1499 # VS 2010 and 2012 have this problem. If future versions fix this issue, 1500 # it should still work, it just won't be as nice as the other method. 1501 set(do_obj_build_rule FALSE) 1502 endif() 1503 1504 if (do_obj_build_rule) 1505 add_custom_command( 1506 OUTPUT ${output_file} 1507 DEPENDS ${object_files} 1508 COMMAND ${CUDA_NVCC_EXECUTABLE} ${nvcc_flags} -dlink ${object_files} -o ${output_file} 1509 ${flags} 1510 COMMENT "Building NVCC intermediate link file ${output_file_relative_path}" 1511 ) 1512 else() 1513 add_custom_command( 1514 TARGET ${cuda_target} 1515 PRE_LINK 1516 COMMAND ${CMAKE_COMMAND} -E echo "Building NVCC intermediate link file ${output_file_relative_path}" 1517 COMMAND ${CUDA_NVCC_EXECUTABLE} ${nvcc_flags} ${flags} -dlink ${object_files} -o "${output_file}" 1518 ) 1519 endif() 1520 endif() 1521endfunction() 1522 1523############################################################################### 1524############################################################################### 1525# ADD LIBRARY 1526############################################################################### 1527############################################################################### 1528macro(CUDA_ADD_LIBRARY cuda_target) 1529 1530 CUDA_ADD_CUDA_INCLUDE_ONCE() 1531 1532 # Separate the sources from the options 1533 CUDA_GET_SOURCES_AND_OPTIONS(_sources _cmake_options _options ${ARGN}) 1534 CUDA_BUILD_SHARED_LIBRARY(_cuda_shared_flag ${ARGN}) 1535 # Create custom commands and targets for each file. 1536 CUDA_WRAP_SRCS( ${cuda_target} OBJ _generated_files ${_sources} 1537 ${_cmake_options} ${_cuda_shared_flag} 1538 OPTIONS ${_options} ) 1539 1540 # Compute the file name of the intermedate link file used for separable 1541 # compilation. 1542 CUDA_COMPUTE_SEPARABLE_COMPILATION_OBJECT_FILE_NAME(link_file ${cuda_target} "${${cuda_target}_SEPARABLE_COMPILATION_OBJECTS}") 1543 1544 # Add the library. 1545 add_library(${cuda_target} ${_cmake_options} 1546 ${_generated_files} 1547 ${_sources} 1548 ${link_file} 1549 ) 1550 1551 # Add a link phase for the separable compilation if it has been enabled. If 1552 # it has been enabled then the ${cuda_target}_SEPARABLE_COMPILATION_OBJECTS 1553 # variable will have been defined. 1554 CUDA_LINK_SEPARABLE_COMPILATION_OBJECTS("${link_file}" ${cuda_target} "${_options}" "${${cuda_target}_SEPARABLE_COMPILATION_OBJECTS}") 1555 1556 target_link_libraries(${cuda_target} 1557 ${CUDA_LIBRARIES} 1558 ) 1559 1560 # We need to set the linker language based on what the expected generated file 1561 # would be. CUDA_C_OR_CXX is computed based on CUDA_HOST_COMPILATION_CPP. 1562 set_target_properties(${cuda_target} 1563 PROPERTIES 1564 LINKER_LANGUAGE ${CUDA_C_OR_CXX} 1565 ) 1566 1567endmacro() 1568 1569 1570############################################################################### 1571############################################################################### 1572# ADD EXECUTABLE 1573############################################################################### 1574############################################################################### 1575macro(CUDA_ADD_EXECUTABLE cuda_target) 1576 1577 CUDA_ADD_CUDA_INCLUDE_ONCE() 1578 1579 # Separate the sources from the options 1580 CUDA_GET_SOURCES_AND_OPTIONS(_sources _cmake_options _options ${ARGN}) 1581 # Create custom commands and targets for each file. 1582 CUDA_WRAP_SRCS( ${cuda_target} OBJ _generated_files ${_sources} OPTIONS ${_options} ) 1583 1584 # Compute the file name of the intermedate link file used for separable 1585 # compilation. 1586 CUDA_COMPUTE_SEPARABLE_COMPILATION_OBJECT_FILE_NAME(link_file ${cuda_target} "${${cuda_target}_SEPARABLE_COMPILATION_OBJECTS}") 1587 1588 # Add the library. 1589 add_executable(${cuda_target} ${_cmake_options} 1590 ${_generated_files} 1591 ${_sources} 1592 ${link_file} 1593 ) 1594 1595 # Add a link phase for the separable compilation if it has been enabled. If 1596 # it has been enabled then the ${cuda_target}_SEPARABLE_COMPILATION_OBJECTS 1597 # variable will have been defined. 1598 CUDA_LINK_SEPARABLE_COMPILATION_OBJECTS("${link_file}" ${cuda_target} "${_options}" "${${cuda_target}_SEPARABLE_COMPILATION_OBJECTS}") 1599 1600 target_link_libraries(${cuda_target} 1601 ${CUDA_LIBRARIES} 1602 ) 1603 1604 # We need to set the linker language based on what the expected generated file 1605 # would be. CUDA_C_OR_CXX is computed based on CUDA_HOST_COMPILATION_CPP. 1606 set_target_properties(${cuda_target} 1607 PROPERTIES 1608 LINKER_LANGUAGE ${CUDA_C_OR_CXX} 1609 ) 1610 1611endmacro() 1612 1613 1614############################################################################### 1615############################################################################### 1616# (Internal) helper for manually added cuda source files with specific targets 1617############################################################################### 1618############################################################################### 1619macro(cuda_compile_base cuda_target format generated_files) 1620 1621 # Separate the sources from the options 1622 CUDA_GET_SOURCES_AND_OPTIONS(_sources _cmake_options _options ${ARGN}) 1623 # Create custom commands and targets for each file. 1624 CUDA_WRAP_SRCS( ${cuda_target} ${format} _generated_files ${_sources} ${_cmake_options} 1625 OPTIONS ${_options} ) 1626 1627 set( ${generated_files} ${_generated_files}) 1628 1629endmacro() 1630 1631############################################################################### 1632############################################################################### 1633# CUDA COMPILE 1634############################################################################### 1635############################################################################### 1636macro(CUDA_COMPILE generated_files) 1637 cuda_compile_base(cuda_compile OBJ ${generated_files} ${ARGN}) 1638endmacro() 1639 1640############################################################################### 1641############################################################################### 1642# CUDA COMPILE PTX 1643############################################################################### 1644############################################################################### 1645macro(CUDA_COMPILE_PTX generated_files) 1646 cuda_compile_base(cuda_compile_ptx PTX ${generated_files} ${ARGN}) 1647endmacro() 1648 1649############################################################################### 1650############################################################################### 1651# CUDA COMPILE FATBIN 1652############################################################################### 1653############################################################################### 1654macro(CUDA_COMPILE_FATBIN generated_files) 1655 cuda_compile_base(cuda_compile_fatbin FATBIN ${generated_files} ${ARGN}) 1656endmacro() 1657 1658############################################################################### 1659############################################################################### 1660# CUDA COMPILE CUBIN 1661############################################################################### 1662############################################################################### 1663macro(CUDA_COMPILE_CUBIN generated_files) 1664 cuda_compile_base(cuda_compile_cubin CUBIN ${generated_files} ${ARGN}) 1665endmacro() 1666 1667 1668############################################################################### 1669############################################################################### 1670# CUDA ADD CUFFT TO TARGET 1671############################################################################### 1672############################################################################### 1673macro(CUDA_ADD_CUFFT_TO_TARGET target) 1674 if (CUDA_BUILD_EMULATION) 1675 target_link_libraries(${target} ${CUDA_cufftemu_LIBRARY}) 1676 else() 1677 target_link_libraries(${target} ${CUDA_cufft_LIBRARY}) 1678 endif() 1679endmacro() 1680 1681############################################################################### 1682############################################################################### 1683# CUDA ADD CUBLAS TO TARGET 1684############################################################################### 1685############################################################################### 1686macro(CUDA_ADD_CUBLAS_TO_TARGET target) 1687 if (CUDA_BUILD_EMULATION) 1688 target_link_libraries(${target} ${CUDA_cublasemu_LIBRARY}) 1689 else() 1690 target_link_libraries(${target} ${CUDA_cublas_LIBRARY}) 1691 endif() 1692endmacro() 1693 1694############################################################################### 1695############################################################################### 1696# CUDA BUILD CLEAN TARGET 1697############################################################################### 1698############################################################################### 1699macro(CUDA_BUILD_CLEAN_TARGET) 1700 # Call this after you add all your CUDA targets, and you will get a convience 1701 # target. You should also make clean after running this target to get the 1702 # build system to generate all the code again. 1703 1704 set(cuda_clean_target_name clean_cuda_depends) 1705 if (CMAKE_GENERATOR MATCHES "Visual Studio") 1706 string(TOUPPER ${cuda_clean_target_name} cuda_clean_target_name) 1707 endif() 1708 add_custom_target(${cuda_clean_target_name} 1709 COMMAND ${CMAKE_COMMAND} -E remove ${CUDA_ADDITIONAL_CLEAN_FILES}) 1710 1711 # Clear out the variable, so the next time we configure it will be empty. 1712 # This is useful so that the files won't persist in the list after targets 1713 # have been removed. 1714 set(CUDA_ADDITIONAL_CLEAN_FILES "" CACHE INTERNAL "List of intermediate files that are part of the cuda dependency scanning.") 1715endmacro() 1716