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###############################################################################
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# For more information, please see: http://software.sci.utah.edu
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# Copyright (c) 2008-2009
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# Copyright (c) 2007-2009
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# Scientific Computing and Imaging Institute, University of Utah
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# License for the specific language governing rights and limitations under
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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# DEALINGS IN THE SOFTWARE.
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# This script locates the Nvidia Compute Unified Driver Architecture (CUDA)
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# tools. It should work on linux, windows, and mac and should be reasonably
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# up to date with cuda releases.
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# This script makes use of the standard find_package arguments of <VERSION>,
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# REQUIRED and QUIET. CUDA_FOUND will report if an acceptable version of CUDA
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# The script will prompt the user to specify CUDA_TOOLKIT_ROOT_DIR if the
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# prefix cannot be determined by the location of nvcc in the system path. To
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# use a different installed version of the toolkit set the environment variable
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# CUDA_BIN_PATH before running cmake (e.g. CUDA_BIN_PATH=/usr/local/cuda1.0
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# instead of the default /usr/local/cuda).
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# Set CUDA_BUILD_EMULATION to ON for Emulation mode. Defaults to OFF (device
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# _DEVICEEMU is defined when CUDA_BUILD_EMULATION is TRUE.
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# Set CUDA_HOST_COMPILATION_CPP to OFF for C compilation of host code.
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# Set CUDA_BUILD_CUBIN to "ON" or "OFF" to enable and extra compilation pass
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# with the -cubin option in Device mode. The output is parsed and register,
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# shared memory usage is printed during build. Default ON.
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# Set CUDA_ATTACH_VS_BUILD_RULE_TO_CUDA_FILE to ON if you want the custom build
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# rule to be attached to the source file in Visual Studio. Defaults to ON.
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# Turn OFF if you add the same cuda file to multiple targets.
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# This allows the user to build the target from the CUDA file, however bad
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# things can happen if the CUDA source file is added to multiple targets. When
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# performing parallel builds it is possible for the custom build command to be
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# run more than once and in parallel causing cryptic build errors. This is
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# because VS runs the rules for every source file in the target, and a source
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# can have only one rule no matter how many projects it is added to. Therefore,
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# the rule assigned to the source file really only applies to one target you get
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# clashes when it is run from multiple targets. Eventually everything will get
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# built, but if the user is unaware of this behavior, there may be confusion.
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# It would be nice if we could detect the reuse of source files across multiple
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# targets and turn the option off for the user, but no good solution could be
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# Set CUDA_64_BIT_DEVICE_CODE to ON to compile for 64 bit devices. Defaults to
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# match host bit size. Note that making this different than the host code when
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# generating C files from CUDA code just won't work, because size_t gets defined
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# by nvcc in the generated source. If you compile to PTX and then load the file
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# yourself, you can mix bit sizes between device and host.
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# Set CUDA_VERBOSE_BUILD to ON to see all the commands used when building the
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# CUDA file. When using a Makefile generator the value defaults to VERBOSE (run
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# make VERBOSE=1 to see output). You can override this by setting
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# CUDA_VERBOSE_BUILD to ON.
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# Set CUDA_GENERATED_OUTPUT_DIR to the path you wish to have the generated files
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# placed. If it is blank output files will be placed in
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# CMAKE_CURRENT_BINARY_DIR. Intermediate files will always be placed in
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# CMAKE_CURRENT_BINARY_DIR.
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# The script creates the following macros:
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# CUDA_INCLUDE_DIRECTORIES( path0 path1 ... )
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# -- Sets the directories that should be passed to nvcc
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# (e.g. nvcc -Ipath0 -Ipath1 ... ). These paths usually contain other .cu
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# CUDA_ADD_LIBRARY( cuda_target file0 file1 ... [OPTIONS ...] )
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# -- Creates a shared library "cuda_target" which contains all of the source
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# (*.c, *.cc, etc.) specified and all of the nvcc'ed .cu files specified.
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# All of the specified source files and generated .cpp files are compiled
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# using the standard CMake compiler, so the normal INCLUDE_DIRECTORIES,
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# LINK_DIRECTORIES, and TARGET_LINK_LIBRARIES can be used to affect their
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# build and link. In addition CUDA_INCLUDE_DIRS is added automatically added
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# to include_directories().
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# CUDA_ADD_EXECUTABLE( cuda_target file0 file1 ... [OPTIONS ...] )
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# -- Same as CUDA_ADD_LIBRARY except that an exectuable is created.
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# CUDA_COMPILE( generated_files file0 file1 ... [OPTIONS ...] )
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# -- Returns a list of generated files from the input source files to be used
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# with ADD_LIBRARY or ADD_EXECUTABLE.
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# CUDA_COMPILE_PTX( generated_files file0 file1 ... [OPTIONS ...] )
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# -- Returns a list of PTX files generated from the input source files.
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# CUDA_WRAP_SRCS ( cuda_target format generated_files file0 file1 ...
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# -- This is where all the magic happens. CUDA_ADD_EXECUTABLE,
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# CUDA_ADD_LIBRARY, CUDA_COMPILE, and CUDA_COMPILE_PTX all call this function
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# Given the list of files (file0 file1 ... fileN) this macro generates custom
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# commands that generate either PTX or linkable objects (use "PTX" or "OBJ"
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# for the format argument to switch. Files that don't end with .cu or have
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# the HEADER_FILE_ONLY property are ignored.
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# The arguments passed in after OPTIONS are extra command line options to
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# give to NVCC. You can also specify per configuration options by specifying
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# the name of the configuration followed by the options. General options
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# must preceed configuration specific options. Not all configurations need
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# to be specified, only the ones provided will be used.
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# OPTIONS -DFLAG=2 "-DFLAG_OTHER=space in flag"
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# RELEASE --use_fast_math
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# RELWITHDEBINFO --use_fast_math;-g
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# MINSIZEREL --use_fast_math
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# For certain configurations (namely VS generating object files with
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# CUDA_ATTACH_VS_BUILD_RULE_TO_CUDA_FILE set to ON), no generated file will
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# be produced for the given cuda file. This is because when you add the cuda
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# file to Visual Studio it knows that this file produces and will link in the
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# resulting object file automatically.
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# This script will also generate a separate cmake script that is used at
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# build time to invoke nvcc. This is for serveral reasons.
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# 1. nvcc can return negative numbers as return values which confuses
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# Visual Studio into thinking that the command succeeded. The script now
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# checks the error codes and produces errors when there was a problem
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# 2. nvcc has been known to not delete intermediate results when it
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# encounters problems. The build rules then don't complete, because there
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# exists a partially written output file. The script now deletes the
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# output files if there was an error.
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# 3. By putting all the options that affect the build into a file and then
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# make the build rule dependent on the file, when the options change the
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# output files will be regenerated.
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# CUDA_ADD_CUFFT_TO_TARGET( cuda_target )
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# -- Adds the cufft library to the target. Handles whether you are in emulation
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# CUDA_ADD_CUBLAS_TO_TARGET( cuda_target )
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# -- Adds the cublas library to the target. Handles whether you are in emulation
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# CUDA_BUILD_CLEAN_TARGET()
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# -- Creates a convience target that deletes all the dependency files generated.
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# You should make clean after running this target to ensure the dependency
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# files get regenerated.
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# The script defines the following variables:
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# ( Note CUDA_ADD_* macros setup cuda/cut library dependencies automatically.
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# These variables are only needed if a cuda API call must be made from code in
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# a outside library or executable. )
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# CUDA_VERSION_MAJOR -- The major version of cuda as reported by nvcc.
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# CUDA_VERSION_MINOR -- The minor version.
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# CUDA_VERSION_STRING -- CUDA_VERSION_MAJOR.CUDA_VERSION_MINOR
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# CUDA_INCLUDE_DIRS -- Include directory for cuda headers. Added automatically
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# for CUDA_ADD_EXECUTABLE and CUDA_ADD_LIBRARY.
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# CUDA_LIBRARIES -- Cuda RT library.
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# CUDA_CUT_INCLUDE_DIR -- Include directory for cuda SDK headers (cutil.h).
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# CUDA_CUT_LIBRARIES -- SDK libraries.
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# CUDA_NVCC_FLAGS -- Additional NVCC command line arguments. NOTE:
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# multiple arguments must be semi-colon delimited
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# e.g. --compiler-options;-Wall
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# CUDA_NVCC_FLAGS_<CONFIG> -- Confugration specific flags for NVCC.
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# CUDA_CUFFT_LIBRARIES -- Device or emulation library for the Cuda FFT
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# implementation (alternative to:
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# CUDA_ADD_CUFFT_TO_TARGET macro)
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# CUDA_CUBLAS_LIBRARIES -- Device or emulation library for the Cuda BLAS
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# implementation (alterative to:
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# CUDA_ADD_CUBLAS_TO_TARGET macro).
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# The script now builds object files instead of generating C files. In order to
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# facilitate this, the script now makes use of the CMAKE_{C,CXX}_FLAGS along
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# with their configuration dependent counterparts (i.e. CMAKE_C_FLAGS_DEBUG).
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# These flags are passed through nvcc to the native compiler. In addition, on
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# some systems special flags are added for building objects intended for shared
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# libraries. FindCUDA make use of the CMake variable BUILD_SHARED_LIBS to
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# determine if these flags should be used. Please set this variable according
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# to how the objects are to be used before calling CUDA_ADD_LIBRARY. A
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# preprocessor macro, <target_name>_EXPORTS is defined when BUILD_SHARED_LIBS is
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# defined. In addition, flags passed into add_definitions with -D or /D are
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# passed along to nvcc.
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# Files with the HEADER_FILE_ONLY property set will not be compiled.
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# It might be necessary to set CUDA_TOOLKIT_ROOT_DIR manually on certain platforms,
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# or to use a cuda runtime not installed in the default location. In newer
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# versions of the toolkit the cuda library is included with the graphics
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# driver- be sure that the driver version matches what is needed by the cuda
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# -- Abe Stephens SCI Institute -- http://www.sci.utah.edu/~abe/FindCuda.html
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# -- James Bigler NVIDIA Corp
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###############################################################################
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# We need to have at least this version to support the VERSION_LESS argument to 'if'.
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cmake_minimum_required(VERSION 2.6.2)
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# This macro helps us find the location of helper files we will need the full path to
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macro(CUDA_FIND_HELPER_FILE _name _extension)
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set(_full_name "${_name}.${_extension}")
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# CMAKE_CURRENT_LIST_FILE contains the full path to the file currently being
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# processed. Using this variable, we can pull out the current path, and
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# provide a way to get access to the other files we need local to here.
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get_filename_component(CMAKE_CURRENT_LIST_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH)
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find_file(CUDA_${_name} ${_full_name} PATHS ${CMAKE_CURRENT_LIST_DIR} NO_DEFAULT_PATH)
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if(NOT CUDA_${_name})
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set(error_message "${_full_name} not found in CMAKE_MODULE_PATH")
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if(CUDA_FIND_REQUIRED)
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message(FATAL_ERROR "${error_message}")
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else(CUDA_FIND_REQUIRED)
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if(NOT CUDA_FIND_QUIETLY)
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message(STATUS "${error_message}")
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endif(NOT CUDA_FIND_QUIETLY)
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endif(CUDA_FIND_REQUIRED)
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endif(NOT CUDA_${_name})
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# Set this variable as internal, so the user isn't bugged with it.
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set(CUDA_${_name} ${CUDA_${_name}} CACHE INTERNAL "Location of ${_full_name}" FORCE)
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endmacro(CUDA_FIND_HELPER_FILE)
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#####################################################################
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## CUDA_INCLUDE_NVCC_DEPENDENCIES
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# So we want to try and include the dependency file if it exists. If
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# it doesn't exist then we need to create an empty one, so we can
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# If it does exist, then we need to check to see if all the files it
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# depends on exist. If they don't then we should clear the dependency
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# file and regenerate it later. This covers the case where a header
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# file has disappeared or moved.
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macro(CUDA_INCLUDE_NVCC_DEPENDENCIES dependency_file)
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set(CUDA_NVCC_DEPEND)
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set(CUDA_NVCC_DEPEND_REGENERATE FALSE)
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# Include the dependency file. Create it first if it doesn't exist . The
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# INCLUDE puts a dependency that will force CMake to rerun and bring in the
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# new info when it changes. DO NOT REMOVE THIS (as I did and spent a few
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# hours figuring out why it didn't work.
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if(NOT EXISTS ${dependency_file})
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file(WRITE ${dependency_file} "#FindCUDA.cmake generated file. Do not edit.\n")
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# Always include this file to force CMake to run again next
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# invocation and rebuild the dependencies.
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#message("including dependency_file = ${dependency_file}")
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include(${dependency_file})
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# Now we need to verify the existence of all the included files
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# here. If they aren't there we need to just blank this variable and
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# make the file regenerate again.
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# if(DEFINED CUDA_NVCC_DEPEND)
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# message("CUDA_NVCC_DEPEND set")
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# message("CUDA_NVCC_DEPEND NOT set")
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#message("CUDA_NVCC_DEPEND true")
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foreach(f ${CUDA_NVCC_DEPEND})
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#message("searching for ${f}")
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#message("file ${f} not found")
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set(CUDA_NVCC_DEPEND_REGENERATE TRUE)
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else(CUDA_NVCC_DEPEND)
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#message("CUDA_NVCC_DEPEND false")
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# No dependencies, so regenerate the file.
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set(CUDA_NVCC_DEPEND_REGENERATE TRUE)
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endif(CUDA_NVCC_DEPEND)
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#message("CUDA_NVCC_DEPEND_REGENERATE = ${CUDA_NVCC_DEPEND_REGENERATE}")
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# No incoming dependencies, so we need to generate them. Make the
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# output depend on the dependency file itself, which should cause the
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if(CUDA_NVCC_DEPEND_REGENERATE)
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file(WRITE ${dependency_file} "#FindCUDA.cmake generated file. Do not edit.\n")
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endif(CUDA_NVCC_DEPEND_REGENERATE)
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endmacro(CUDA_INCLUDE_NVCC_DEPENDENCIES)
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###############################################################################
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###############################################################################
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# Setup default variables
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###############################################################################
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###############################################################################
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INCLUDE (CheckTypeSize)
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CHECK_TYPE_SIZE("void*" CMAKE_SIZEOF_VOID_P)
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# Set whether we are using emulation or device mode.
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option(CUDA_BUILD_EMULATION "Build in Emulation mode" OFF)
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# Parse HOST_COMPILATION mode.
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option(CUDA_HOST_COMPILATION_CPP "Generated file extension" ON)
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# Allow the user to specify if the device code is supposed to be 32 or 64 bit.
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if(CMAKE_SIZEOF_VOID_P EQUAL 8)
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set(CUDA_64_BIT_DEVICE_CODE_DEFAULT ON)
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set(CUDA_64_BIT_DEVICE_CODE_DEFAULT OFF)
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option(CUDA_64_BIT_DEVICE_CODE "Compile device code in 64 bit mode" ${CUDA_64_BIT_DEVICE_CODE_DEFAULT})
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# Prints out extra information about the cuda file during compilation
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option(CUDA_BUILD_CUBIN "Generate and parse .cubin files in Device mode." ON)
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# Extra user settable flags
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set(CUDA_NVCC_FLAGS "" CACHE STRING "Semi-colon delimit multiple arguments.")
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# Attach the build rule to the source file in VS. This option
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option(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)
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# Specifies whether the commands used when compiling the .cu file will be printed out.
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option(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)
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# Where to put the generated output.
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set(CUDA_GENERATED_OUTPUT_DIR "" CACHE PATH "Directory to put all the output files. If blank it will default to the CMAKE_CURRENT_BINARY_DIR")
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#SDS addtional masked options
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CUDA_HOST_COMPILATION_CPP
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CUDA_64_BIT_DEVICE_CODE
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CUDA_ATTACH_VS_BUILD_RULE_TO_CUDA_FILE
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CUDA_GENERATED_OUTPUT_DIR
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# Makefile and similar generators don't define CMAKE_CONFIGURATION_TYPES, so we
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# need to add another entry for the CMAKE_BUILD_TYPE. We also need to add the
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# standerd set of 4 build types (Debug, MinSizeRel, Release, and RelWithDebInfo)
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# for completeness. We need run this loop in order to accomodate the addition
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# of extra configuration types. Duplicate entries will be removed by
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set(CUDA_configuration_types ${CMAKE_CONFIGURATION_TYPES} ${CMAKE_BUILD_TYPE} Debug MinSizeRel Release RelWithDebInfo)
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list(REMOVE_DUPLICATES CUDA_configuration_types)
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foreach(config ${CUDA_configuration_types})
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string(TOUPPER ${config} config_upper)
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set(CUDA_NVCC_FLAGS_${config_upper} "" CACHE STRING "Semi-colon delimit multiple arguments.")
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mark_as_advanced(CUDA_NVCC_FLAGS_${config_upper})
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###############################################################################
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###############################################################################
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# Locate CUDA, Set Build Type, etc.
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###############################################################################
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###############################################################################
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# Check to see if the CUDA_TOOLKIT_ROOT_DIR and CUDA_SDK_ROOT_DIR have changed,
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# if they have then clear the cache variables, so that will be detected again.
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if(NOT "${CUDA_TOOLKIT_ROOT_DIR}" STREQUAL "${CUDA_TOOLKIT_ROOT_DIR_INTERNAL}")
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unset(CUDA_NVCC_EXECUTABLE CACHE)
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unset(CUDA_VERSION CACHE)
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unset(CUDA_TOOLKIT_INCLUDE CACHE)
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unset(CUDA_CUDART_LIBRARY CACHE)
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unset(CUDA_CUDA_LIBRARY CACHE)
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unset(CUDA_cublas_LIBRARY CACHE)
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unset(CUDA_cublasemu_LIBRARY CACHE)
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unset(CUDA_cufft_LIBRARY CACHE)
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unset(CUDA_cufftemu_LIBRARY CACHE)
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if(NOT "${CUDA_SDK_ROOT_DIR}" STREQUAL "${CUDA_SDK_ROOT_DIR_INTERNAL}")
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unset(CUDA_CUT_INCLUDE_DIR CACHE)
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unset(CUDA_CUT_LIBRARY CACHE)
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# Search for the cuda distribution.
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if(NOT CUDA_TOOLKIT_ROOT_DIR)
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# Search in the CUDA_BIN_PATH first.
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find_path(CUDA_TOOLKIT_ROOT_DIR
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PATHS ENV CUDA_BIN_PATH
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DOC "Toolkit location."
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# Now search default paths
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find_path(CUDA_TOOLKIT_ROOT_DIR
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DOC "Toolkit location."
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if (CUDA_TOOLKIT_ROOT_DIR)
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string(REGEX REPLACE "[/\\\\]?bin[/\\\\]?$" "" CUDA_TOOLKIT_ROOT_DIR ${CUDA_TOOLKIT_ROOT_DIR})
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# We need to force this back into the cache.
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set(CUDA_TOOLKIT_ROOT_DIR ${CUDA_TOOLKIT_ROOT_DIR} CACHE PATH "Toolkit location." FORCE)
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endif(CUDA_TOOLKIT_ROOT_DIR)
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if (NOT EXISTS ${CUDA_TOOLKIT_ROOT_DIR})
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if(CUDA_FIND_REQUIRED)
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message(FATAL_ERROR "Specify CUDA_TOOLKIT_ROOT_DIR")
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elseif(NOT CUDA_FIND_QUIETLY)
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message("CUDA_TOOLKIT_ROOT_DIR not found or specified")
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endif (NOT EXISTS ${CUDA_TOOLKIT_ROOT_DIR})
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endif (NOT CUDA_TOOLKIT_ROOT_DIR)
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# CUDA_NVCC_EXECUTABLE
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find_program(CUDA_NVCC_EXECUTABLE
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PATHS "${CUDA_TOOLKIT_ROOT_DIR}/bin"
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# Search default search paths, after we search our own set of paths.
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find_program(CUDA_NVCC_EXECUTABLE nvcc)
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mark_as_advanced(CUDA_NVCC_EXECUTABLE)
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if(CUDA_NVCC_EXECUTABLE AND NOT CUDA_VERSION)
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# Compute the version.
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exec_program(${CUDA_NVCC_EXECUTABLE} ARGS "--version" OUTPUT_VARIABLE NVCC_OUT)
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string(REGEX REPLACE ".*release ([0-9]+)\\.([0-9]+).*" "\\1" CUDA_VERSION_MAJOR ${NVCC_OUT})
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string(REGEX REPLACE ".*release ([0-9]+)\\.([0-9]+).*" "\\2" CUDA_VERSION_MINOR ${NVCC_OUT})
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set(CUDA_VERSION "${CUDA_VERSION_MAJOR}.${CUDA_VERSION_MINOR}" CACHE STRING "Version of CUDA as computed from nvcc.")
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mark_as_advanced(CUDA_VERSION)
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# Always set this convenience variable
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set(CUDA_VERSION_STRING "${CUDA_VERSION}")
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# Here we need to determine if the version we found is acceptable. We will
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# assume that is unless CUDA_FIND_VERSION_EXACT or CUDA_FIND_VERSION is
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# specified. The presence of either of these options checks the version
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# string and signals if the version is acceptable or not.
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set(_cuda_version_acceptable TRUE)
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if(CUDA_FIND_VERSION_EXACT AND NOT CUDA_VERSION VERSION_EQUAL CUDA_FIND_VERSION)
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set(_cuda_version_acceptable FALSE)
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if(CUDA_FIND_VERSION AND CUDA_VERSION VERSION_LESS CUDA_FIND_VERSION)
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set(_cuda_version_acceptable FALSE)
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if(NOT _cuda_version_acceptable)
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set(_cuda_error_message "Requested CUDA version ${CUDA_FIND_VERSION}, but found unacceptable version ${CUDA_VERSION}")
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if(CUDA_FIND_REQUIRED)
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message("${_cuda_error_message}")
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elseif(NOT CUDA_FIND_QUIETLY)
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message("${_cuda_error_message}")
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# CUDA_TOOLKIT_INCLUDE
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find_path(CUDA_TOOLKIT_INCLUDE
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device_functions.h # Header included in toolkit
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PATHS "${CUDA_TOOLKIT_ROOT_DIR}/include"
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# Search default search paths, after we search our own set of paths.
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find_path(CUDA_TOOLKIT_INCLUDE device_functions.h)
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mark_as_advanced(CUDA_TOOLKIT_INCLUDE)
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# Set the user list of include dir to nothing to initialize it.
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set (CUDA_NVCC_INCLUDE_ARGS_USER "")
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set (CUDA_INCLUDE_DIRS ${CUDA_TOOLKIT_INCLUDE})
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macro(FIND_LIBRARY_LOCAL_FIRST _var _names _doc)
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PATHS "${CUDA_TOOLKIT_ROOT_DIR}/lib"
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# Search default search paths, after we search our own set of paths.
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find_library(${_var} NAMES ${_names} DOC ${_doc})
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find_library_local_first(CUDA_CUDART_LIBRARY cudart "\"cudart\" library")
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set(CUDA_LIBRARIES ${CUDA_CUDART_LIBRARY})
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# 1.1 toolkit on linux doesn't appear to have a separate library on
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find_library_local_first(CUDA_CUDA_LIBRARY cuda "\"cuda\" library (older versions only).")
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# Add cuda library to the link line only if it is found.
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if (CUDA_CUDA_LIBRARY)
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set(CUDA_LIBRARIES ${CUDA_LIBRARIES} ${CUDA_CUDA_LIBRARY})
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endif(CUDA_CUDA_LIBRARY)
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#######################
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# Look for some of the toolkit helper libraries
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macro(FIND_CUDA_HELPER_LIBS _name)
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find_library_local_first(CUDA_${_name}_LIBRARY ${_name} "\"${_name}\" library")
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mark_as_advanced(CUDA_${_name}_LIBRARY)
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endmacro(FIND_CUDA_HELPER_LIBS)
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# Search for cufft and cublas libraries.
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find_cuda_helper_libs(cufftemu)
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find_cuda_helper_libs(cublasemu)
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find_cuda_helper_libs(cufft)
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find_cuda_helper_libs(cublas)
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if (CUDA_BUILD_EMULATION)
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set(CUDA_CUFFT_LIBRARIES ${CUDA_cufftemu_LIBRARY})
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set(CUDA_CUBLAS_LIBRARIES ${CUDA_cublasemu_LIBRARY})
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set(CUDA_CUFFT_LIBRARIES ${CUDA_cufft_LIBRARY})
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set(CUDA_CUBLAS_LIBRARIES ${CUDA_cublas_LIBRARY})
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########################
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# Look for the SDK stuff
546
find_path(CUDA_SDK_ROOT_DIR common/inc/cutil.h
547
"$ENV{NVSDKCUDA_ROOT}"
548
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\NVIDIA Corporation\\Installed Products\\NVIDIA SDK 10\\Compute;InstallDir]"
551
# Keep the CUDA_SDK_ROOT_DIR first in order to be able to override the
552
# environment variables.
553
# SDS some directories are added
554
set(CUDA_SDK_SEARCH_PATH
555
"${CUDA_SDK_ROOT_DIR}"
556
"${CUDA_TOOLKIT_ROOT_DIR}"
557
"${CUDA_TOOLKIT_ROOT_DIR}/sdk"
558
"${CUDA_TOOLKIT_ROOT_DIR}/local/NVSDK0.2"
559
"${CUDA_TOOLKIT_ROOT_DIR}/NVSDK0.2"
560
"${CUDA_TOOLKIT_ROOT_DIR}/NV_CUDA_SDK"
561
"$ENV{HOME}/NVIDIA_CUDA_SDK"
562
"$ENV{HOME}/NVIDIA_CUDA_SDK_MACOSX"
566
# CUDA_CUT_INCLUDE_DIR
567
find_path(CUDA_CUT_INCLUDE_DIR
569
PATHS ${CUDA_SDK_SEARCH_PATH}
570
PATH_SUFFIXES "common/inc"
571
DOC "Location of cutil.h"
574
# Now search system paths
575
find_path(CUDA_CUT_INCLUDE_DIR cutil.h DOC "Location of cutil.h")
577
mark_as_advanced(CUDA_CUT_INCLUDE_DIR)
582
# cutil library is called cutil64 for 64 bit builds on windows. We don't want
583
# to get these confused, so we are setting the name based on the word size of
585
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
586
set(cuda_cutil_name cutil64)
587
else(CMAKE_SIZEOF_VOID_P EQUAL 8)
588
set(cuda_cutil_name cutil32)
589
endif(CMAKE_SIZEOF_VOID_P EQUAL 8)
591
find_library(CUDA_CUT_LIBRARY
592
NAMES cutil ${cuda_cutil_name}
593
PATHS ${CUDA_SDK_SEARCH_PATH}
594
# The new version of the sdk shows up in common/lib, but the old one is in lib
595
PATH_SUFFIXES "common/lib" "lib"
596
DOC "Location of cutil library"
599
# Now search system paths
600
find_library(CUDA_CUT_LIBRARY NAMES cutil ${cuda_cutil_name} DOC "Location of cutil library")
601
mark_as_advanced(CUDA_CUT_LIBRARY)
602
set(CUDA_CUT_LIBRARIES ${CUDA_CUT_LIBRARY})
606
#############################
607
# Check for required components
610
set(CUDA_TOOLKIT_ROOT_DIR_INTERNAL "${CUDA_TOOLKIT_ROOT_DIR}" CACHE INTERNAL
611
"This is the value of the last time CUDA_TOOLKIT_ROOT_DIR was set successfully." FORCE)
612
set(CUDA_SDK_ROOT_DIR_INTERNAL "${CUDA_SDK_ROOT_DIR}" CACHE INTERNAL
613
"This is the value of the last time CUDA_SDK_ROOT_DIR was set successfully." FORCE)
615
include(FindPackageHandleStandardArgs)
616
find_package_handle_standard_args(CUDA DEFAULT_MSG
617
CUDA_TOOLKIT_ROOT_DIR
621
_cuda_version_acceptable
626
###############################################################################
627
###############################################################################
629
###############################################################################
630
###############################################################################
632
###############################################################################
633
# Add include directories to pass to the nvcc command.
634
macro(CUDA_INCLUDE_DIRECTORIES)
636
list(APPEND CUDA_NVCC_INCLUDE_ARGS_USER "-I${dir}")
637
endforeach(dir ${ARGN})
638
endmacro(CUDA_INCLUDE_DIRECTORIES)
641
##############################################################################
642
cuda_find_helper_file(parse_cubin cmake)
643
cuda_find_helper_file(make2cmake cmake)
644
cuda_find_helper_file(run_nvcc cmake)
646
##############################################################################
647
# Separate the OPTIONS out from the sources
649
macro(CUDA_GET_SOURCES_AND_OPTIONS _sources _options)
652
set( _found_options FALSE )
654
if(arg STREQUAL "OPTIONS")
655
set( _found_options TRUE )
657
if ( _found_options )
658
list(APPEND ${_options} "${arg}")
660
# Assume this is a file
661
list(APPEND ${_sources} "${arg}")
667
##############################################################################
668
# Parse the OPTIONS from ARGN and set the variables prefixed by _option_prefix
670
macro(CUDA_PARSE_NVCC_OPTIONS _option_prefix)
673
# Determine if we are dealing with a perconfiguration flag
674
foreach(config ${CUDA_configuration_types})
675
string(TOUPPER ${config} config_upper)
676
if (arg STREQUAL "${config_upper}")
677
set( _found_config _${arg})
678
# Set arg to nothing to keep it from being processed further
684
list(APPEND ${_option_prefix}${_found_config} "${arg}")
689
##############################################################################
690
# Helper to add the include directory for CUDA only once
691
function(CUDA_ADD_CUDA_INCLUDE_ONCE)
692
get_directory_property(_include_directories INCLUDE_DIRECTORIES)
694
if(_include_directories)
695
foreach(dir ${_include_directories})
696
if("${dir}" STREQUAL "${CUDA_INCLUDE_DIRS}")
702
include_directories(${CUDA_INCLUDE_DIRS})
706
##############################################################################
707
# This helper macro populates the following variables and setups up custom
708
# commands and targets to invoke the nvcc compiler to generate C or PTX source
709
# dependant upon the format parameter. The compiler is invoked once with -M
710
# to generate a dependency file and a second time with -cuda or -ptx to generate
711
# a .cpp or .ptx file.
713
# cuda_target - Target name
714
# format - PTX or OBJ
715
# FILE1 .. FILEN - The remaining arguments are the sources to be wrapped.
716
# OPTIONS - Extra options to NVCC
718
# generated_files - List of generated files
719
##############################################################################
720
##############################################################################
722
macro(CUDA_WRAP_SRCS cuda_target format generated_files)
724
if( ${format} MATCHES "PTX" )
725
set( compile_to_ptx ON )
726
elseif( ${format} MATCHES "OBJ")
727
set( compile_to_ptx OFF )
729
message( FATAL_ERROR "Invalid format flag passed to CUDA_WRAP_SRCS: '${format}'. Use OBJ or PTX.")
732
# Set up all the command line flags here, so that they can be overriden on a per target basis.
736
# Emulation if the card isn't present.
737
if (CUDA_BUILD_EMULATION)
739
set(nvcc_flags ${nvcc_flags} --device-emulation -D_DEVICEEMU -g)
740
else(CUDA_BUILD_EMULATION)
741
# Device mode. No flags necessary.
742
endif(CUDA_BUILD_EMULATION)
744
if(CUDA_HOST_COMPILATION_CPP)
745
set(CUDA_C_OR_CXX CXX)
746
else(CUDA_HOST_COMPILATION_CPP)
747
set(nvcc_flags ${nvcc_flags} --host-compilation C)
749
endif(CUDA_HOST_COMPILATION_CPP)
751
set(generated_extension ${CMAKE_${CUDA_C_OR_CXX}_OUTPUT_EXTENSION})
753
if(CUDA_64_BIT_DEVICE_CODE)
754
set(nvcc_flags ${nvcc_flags} -m64)
756
set(nvcc_flags ${nvcc_flags} -m32)
759
# This needs to be passed in at this stage, because VS needs to fill out the
760
# value of VCInstallDir from within VS.
761
if(CMAKE_GENERATOR MATCHES "Visual Studio")
762
if( CMAKE_SIZEOF_VOID_P EQUAL 8 )
763
# Add nvcc flag for 64b Windows
764
set(ccbin_flags -D "\"CCBIN:PATH=$(VCInstallDir)bin\"" )
768
# Figure out which configure we will use and pass that in as an argument to
769
# the script. We need to defer the decision until compilation time, because
770
# for VS projects we won't know if we are making a debug or release build
772
if(CMAKE_GENERATOR MATCHES "Visual Studio")
773
set( CUDA_build_configuration "$(ConfigurationName)" )
775
set( CUDA_build_configuration "${CMAKE_BUILD_TYPE}")
778
# Initialize our list of includes with the user ones followed by the CUDA system ones.
779
set(CUDA_NVCC_INCLUDE_ARGS ${CUDA_NVCC_INCLUDE_ARGS_USER} "-I${CUDA_INCLUDE_DIRS}")
780
# Get the include directories for this directory and use them for our nvcc command.
781
get_directory_property(CUDA_NVCC_INCLUDE_DIRECTORIES INCLUDE_DIRECTORIES)
782
if(CUDA_NVCC_INCLUDE_DIRECTORIES)
783
foreach(dir ${CUDA_NVCC_INCLUDE_DIRECTORIES})
784
list(APPEND CUDA_NVCC_INCLUDE_ARGS "-I${dir}")
788
# Reset these variables
789
set(CUDA_WRAP_OPTION_NVCC_FLAGS)
790
foreach(config ${CUDA_configuration_types})
791
string(TOUPPER ${config} config_upper)
792
set(CUDA_WRAP_OPTION_NVCC_FLAGS_${config_upper})
795
CUDA_GET_SOURCES_AND_OPTIONS(_cuda_wrap_sources _cuda_wrap_options ${ARGN})
796
CUDA_PARSE_NVCC_OPTIONS(CUDA_WRAP_OPTION_NVCC_FLAGS ${_cuda_wrap_options})
799
if(BUILD_SHARED_LIBS)
800
# If BUILD_SHARED_LIBS is true, then we need to add extra flags for
801
# compiling objects for shared libraries.
802
set(CUDA_HOST_SHARED_FLAGS ${CMAKE_SHARED_LIBRARY_${CUDA_C_OR_CXX}_FLAGS})
804
set(CUDA_HOST_FLAGS "set(CMAKE_HOST_FLAGS ${CMAKE_${CUDA_C_OR_CXX}_FLAGS} ${CUDA_HOST_SHARED_FLAGS})")
805
set(CUDA_NVCC_FLAGS_CONFIG "# Build specific configuration flags")
806
# Loop over all the configuration types to generate appropriate flags for run_nvcc.cmake
807
foreach(config ${CUDA_configuration_types})
808
string(TOUPPER ${config} config_upper)
809
# CMAKE_FLAGS are strings and not lists. By not putting quotes around CMAKE_FLAGS
810
# we convert the strings to lists (like we want).
812
# nvcc chokes on -g3, so replace it with -g
813
if(CMAKE_COMPILER_IS_GNUCC)
814
string(REPLACE "-g3" "-g" _cuda_C_FLAGS "${CMAKE_${CUDA_C_OR_CXX}_FLAGS_${config_upper}}")
816
set(_cuda_C_FLAGS "${CMAKE_${CUDA_C_OR_CXX}_FLAGS_${config_upper}}")
818
set(CUDA_HOST_FLAGS "${CUDA_HOST_FLAGS}\nset(CMAKE_HOST_FLAGS_${config_upper} ${_cuda_C_FLAGS})")
819
# Note that if we ever want CUDA_NVCC_FLAGS_<CONFIG> to be string (instead of a list
820
# like it is currently), we can remove the quotes around the
821
# ${CUDA_NVCC_FLAGS_${config_upper}} variable like the CMAKE_HOST_FLAGS_<CONFIG> variable.
822
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}}\")")
825
# Get the list of definitions from the directory property
826
get_directory_property(CUDA_NVCC_DEFINITIONS COMPILE_DEFINITIONS)
827
if(CUDA_NVCC_DEFINITIONS)
828
foreach(_definition ${CUDA_NVCC_DEFINITIONS})
829
list(APPEND nvcc_flags "-D${_definition}")
833
if(BUILD_SHARED_LIBS)
834
list(APPEND nvcc_flags "-D${cuda_target}_EXPORTS")
837
# Determine output directory
838
if(CUDA_GENERATED_OUTPUT_DIR)
839
set(cuda_compile_output_dir "${CUDA_GENERATED_OUTPUT_DIR}")
841
set(cuda_compile_output_dir "${CMAKE_CURRENT_BINARY_DIR}")
844
# Reset the output variable
845
set(_cuda_wrap_generated_files "")
847
# Iterate over the macro arguments and create custom
848
# commands for all the .cu files.
849
foreach(file ${ARGN})
850
# Ignore any file marked as a HEADER_FILE_ONLY
851
get_source_file_property(_is_header ${file} HEADER_FILE_ONLY)
852
if(${file} MATCHES ".*\\.cu$" AND NOT _is_header)
854
# Add a custom target to generate a c or ptx file. ######################
856
get_filename_component( basename ${file} NAME )
858
set(generated_file_path "${cuda_compile_output_dir}")
859
set(generated_file_basename "${cuda_target}_generated_${basename}.ptx")
860
set(format_flag "-ptx")
861
file(MAKE_DIRECTORY "${cuda_compile_output_dir}")
862
else( compile_to_ptx )
863
set(generated_file_path "${cuda_compile_output_dir}/${CMAKE_CFG_INTDIR}")
864
set(generated_file_basename "${cuda_target}_generated_${basename}${generated_extension}")
865
set(format_flag "-c")
866
endif( compile_to_ptx )
868
# Set all of our file names. Make sure that whatever filenames that have
869
# generated_file_path in them get passed in through as a command line
870
# argument, so that the ${CMAKE_CFG_INTDIR} gets expanded at run time
871
# instead of configure time.
872
#SDS move cu.o.* files into the generated folder
873
set(generated_file "${generated_file_path}/${generated_file_basename}")
874
set(cmake_dependency_file "${generated_file_path}/${generated_file_basename}.depend")
875
set(NVCC_generated_dependency_file "${generated_file_path}/${generated_file_basename}.NVCC-depend")
876
set(generated_cubin_file "${generated_file_path}/${generated_file_basename}.cubin.txt")
877
set(custom_target_script "${generated_file_path}/${generated_file_basename}.cmake")
879
# Setup properties for obj files:
880
if( NOT compile_to_ptx )
881
set_source_files_properties("${generated_file}"
883
EXTERNAL_OBJECT true # This is an object file not to be compiled, but only be linked.
887
# Don't add CMAKE_CURRENT_SOURCE_DIR if the path is already an absolute path.
888
get_filename_component(file_path "${file}" PATH)
889
if(IS_ABSOLUTE "${file_path}")
890
set(source_file "${file}")
892
set(source_file "${CMAKE_CURRENT_SOURCE_DIR}/${file}")
895
# Bring in the dependencies. Creates a variable CUDA_NVCC_DEPEND #######
896
cuda_include_nvcc_dependencies(${cmake_dependency_file})
898
# Convience string for output ###########################################
899
if(CUDA_BUILD_EMULATION)
900
set(cuda_build_type "Emulation")
901
else(CUDA_BUILD_EMULATION)
902
set(cuda_build_type "Device")
903
endif(CUDA_BUILD_EMULATION)
905
# Build the NVCC made dependency file ###################################
907
if ( NOT CUDA_BUILD_EMULATION AND CUDA_BUILD_CUBIN )
908
if ( NOT compile_to_ptx )
909
set ( build_cubin ON )
910
endif( NOT compile_to_ptx )
911
endif( NOT CUDA_BUILD_EMULATION AND CUDA_BUILD_CUBIN )
913
# Configure the build script
914
configure_file("${CUDA_run_nvcc}" "${custom_target_script}" @ONLY)
916
# So if a user specifies the same cuda file as input more than once, you
917
# can have bad things happen with dependencies. Here we check an option
918
# to see if this is the behavior they want.
919
if(CUDA_ATTACH_VS_BUILD_RULE_TO_CUDA_FILE)
920
set(main_dep MAIN_DEPENDENCY ${source_file})
922
set(main_dep DEPENDS ${source_file})
925
if(CUDA_VERBOSE_BUILD)
926
set(verbose_output ON)
927
elseif(CMAKE_GENERATOR MATCHES "Makefiles")
928
set(verbose_output "$(VERBOSE)")
930
set(verbose_output OFF)
933
# Create up the comment string
934
file(RELATIVE_PATH generated_file_relative_path "${CMAKE_BINARY_DIR}" "${generated_file}")
936
set(cuda_build_comment_string "Building NVCC ptx file ${generated_file_relative_path}")
938
set(cuda_build_comment_string "Building NVCC (${cuda_build_type}) object ${generated_file_relative_path}")
941
# Build the generated file and dependency file ##########################
943
OUTPUT ${generated_file}
944
# These output files depend on the source_file and the contents of cmake_dependency_file
946
DEPENDS ${CUDA_NVCC_DEPEND}
947
DEPENDS ${custom_target_script}
948
COMMAND ${CMAKE_COMMAND} ARGS
949
-D verbose:BOOL=${verbose_output}
951
-D build_configuration:STRING=${CUDA_build_configuration}
952
-D "generated_file:STRING=${generated_file}"
953
-D "generated_cubin_file:STRING=${generated_cubin_file}"
954
-P "${custom_target_script}"
955
COMMENT "${cuda_build_comment_string}"
958
# Make sure the build system knows the file is generated.
959
set_source_files_properties(${generated_file} PROPERTIES GENERATED TRUE)
961
# Don't add the object file to the list of generated files if we are using
962
# visual studio and we are attaching the build rule to the cuda file. VS
963
# will add our object file to the linker automatically for us.
964
set(cuda_add_generated_file TRUE)
966
if(NOT compile_to_ptx AND CMAKE_GENERATOR MATCHES "Visual Studio" AND CUDA_ATTACH_VS_BUILD_RULE_TO_CUDA_FILE)
967
# Visual Studio 8 crashes when you close the solution when you don't add the object file.
968
if(NOT CMAKE_GENERATOR MATCHES "Visual Studio 8")
969
set(cuda_add_generated_file FALSE)
973
if(cuda_add_generated_file)
974
list(APPEND _cuda_wrap_generated_files ${generated_file})
977
# Add the other files that we want cmake to clean on a cleanup ##########
978
list(APPEND CUDA_ADDITIONAL_CLEAN_FILES "${cmake_dependency_file}")
979
list(REMOVE_DUPLICATES CUDA_ADDITIONAL_CLEAN_FILES)
980
set(CUDA_ADDITIONAL_CLEAN_FILES ${CUDA_ADDITIONAL_CLEAN_FILES} CACHE INTERNAL "List of intermediate files that are part of the cuda dependency scanning.")
982
endif(${file} MATCHES ".*\\.cu$" AND NOT _is_header)
985
# Set the return parameter
986
set(${generated_files} ${_cuda_wrap_generated_files})
987
endmacro(CUDA_WRAP_SRCS)
990
###############################################################################
991
###############################################################################
993
###############################################################################
994
###############################################################################
995
macro(CUDA_ADD_LIBRARY cuda_target)
997
CUDA_ADD_CUDA_INCLUDE_ONCE()
999
# Separate the sources from the options
1000
CUDA_GET_SOURCES_AND_OPTIONS(_sources _options ${ARGN})
1001
# Create custom commands and targets for each file.
1002
CUDA_WRAP_SRCS( ${cuda_target} OBJ _generated_files ${_sources} OPTIONS ${_options} )
1005
add_library(${cuda_target}
1010
target_link_libraries(${cuda_target}
1014
# We need to set the linker language based on what the expected generated file
1015
# would be. CUDA_C_OR_CXX is computed based on CUDA_HOST_COMPILATION_CPP.
1016
set_target_properties(${cuda_target}
1018
LINKER_LANGUAGE ${CUDA_C_OR_CXX}
1021
endmacro(CUDA_ADD_LIBRARY cuda_target)
1024
###############################################################################
1025
###############################################################################
1027
###############################################################################
1028
###############################################################################
1029
macro(CUDA_ADD_EXECUTABLE cuda_target)
1031
CUDA_ADD_CUDA_INCLUDE_ONCE()
1033
# Separate the sources from the options
1034
CUDA_GET_SOURCES_AND_OPTIONS(_sources _options ${ARGN})
1035
# Create custom commands and targets for each file.
1036
CUDA_WRAP_SRCS( ${cuda_target} OBJ _generated_files ${_sources} OPTIONS ${_options} )
1039
add_executable(${cuda_target}
1044
target_link_libraries(${cuda_target}
1048
# We need to set the linker language based on what the expected generated file
1049
# would be. CUDA_C_OR_CXX is computed based on CUDA_HOST_COMPILATION_CPP.
1050
set_target_properties(${cuda_target}
1052
LINKER_LANGUAGE ${CUDA_C_OR_CXX}
1055
endmacro(CUDA_ADD_EXECUTABLE cuda_target)
1058
###############################################################################
1059
###############################################################################
1061
###############################################################################
1062
###############################################################################
1063
macro(CUDA_COMPILE generated_files)
1065
# Separate the sources from the options
1066
CUDA_GET_SOURCES_AND_OPTIONS(_sources _options ${ARGN})
1067
# Create custom commands and targets for each file.
1068
CUDA_WRAP_SRCS( cuda_compile OBJ _generated_files ${_sources} OPTIONS ${_options} )
1070
set( ${generated_files} ${_generated_files})
1072
endmacro(CUDA_COMPILE)
1075
###############################################################################
1076
###############################################################################
1078
###############################################################################
1079
###############################################################################
1080
macro(CUDA_COMPILE_PTX generated_files)
1082
# Separate the sources from the options
1083
CUDA_GET_SOURCES_AND_OPTIONS(_sources _options ${ARGN})
1084
# Create custom commands and targets for each file.
1085
CUDA_WRAP_SRCS( cuda_compile_ptx PTX _generated_files ${_sources} OPTIONS ${_options} )
1087
set( ${generated_files} ${_generated_files})
1089
endmacro(CUDA_COMPILE_PTX)
1091
###############################################################################
1092
###############################################################################
1093
# CUDA ADD CUFFT TO TARGET
1094
###############################################################################
1095
###############################################################################
1096
macro(CUDA_ADD_CUFFT_TO_TARGET target)
1097
if (CUDA_BUILD_EMULATION)
1098
target_link_libraries(${target} ${CUDA_cufftemu_LIBRARY})
1100
target_link_libraries(${target} ${CUDA_cufft_LIBRARY})
1104
###############################################################################
1105
###############################################################################
1106
# CUDA ADD CUBLAS TO TARGET
1107
###############################################################################
1108
###############################################################################
1109
macro(CUDA_ADD_CUBLAS_TO_TARGET target)
1110
if (CUDA_BUILD_EMULATION)
1111
target_link_libraries(${target} ${CUDA_cublasemu_LIBRARY})
1113
target_link_libraries(${target} ${CUDA_cublas_LIBRARY})
1117
###############################################################################
1118
###############################################################################
1119
# CUDA BUILD CLEAN TARGET
1120
###############################################################################
1121
###############################################################################
1122
macro(CUDA_BUILD_CLEAN_TARGET)
1123
# Call this after you add all your CUDA targets, and you will get a convience
1124
# target. You should also make clean after running this target to get the
1125
# build system to generate all the code again.
1127
set(cuda_clean_target_name clean_cuda_depends)
1128
if (CMAKE_GENERATOR MATCHES "Visual Studio")
1129
string(TOUPPER ${cuda_clean_target_name} cuda_clean_target_name)
1131
add_custom_target(${cuda_clean_target_name}
1132
COMMAND ${CMAKE_COMMAND} -E remove ${CUDA_ADDITIONAL_CLEAN_FILES})
1134
# Clear out the variable, so the next time we configure it will be empty.
1135
# This is useful so that the files won't persist in the list after targets
1136
# have been removed.
1137
set(CUDA_ADDITIONAL_CLEAN_FILES "" CACHE INTERNAL "List of intermediate files that are part of the cuda dependency scanning.")
1138
endmacro(CUDA_BUILD_CLEAN_TARGET)