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# Due to the complexity involved, this package doesn't install CUDA. It instead verifies that CUDA is installed.
# Other packages can depend on this package to declare a dependency on CUDA.
# If this package is installed, we assume that CUDA is properly installed.
find_program(NVCC
NAMES nvcc nvcc.exe
PATHS
ENV CUDA_PATH
ENV CUDA_BIN_PATH
PATH_SUFFIXES bin bin64
DOC "Toolkit location."
NO_DEFAULT_PATH
)
set(error_code 1)
if (NVCC)
execute_process(
COMMAND ${NVCC} --version
OUTPUT_VARIABLE NVCC_OUTPUT
RESULT_VARIABLE error_code)
endif()
set(CUDA_REQUIRED_VERSION "V9.0.0")
if (error_code)
message(FATAL_ERROR "Could not find CUDA. Before continuing, please download and install CUDA (${CUDA_REQUIRED_VERSION} or higher) from:"
"\n https://developer.nvidia.com/cuda-downloads\n"
"\nAlso ensure vcpkg has been rebuilt with the latest version (v0.0.104 or later)")
endif()
# Sample output:
# NVIDIA (R) Cuda compiler driver
# Copyright (c) 2005-2016 NVIDIA Corporation
# Built on Sat_Sep__3_19:05:48_CDT_2016
# Cuda compilation tools, release 8.0, V8.0.44
string(REGEX MATCH "V([0-9]+)\\.([0-9]+)\\.([0-9]+)" CUDA_VERSION ${NVCC_OUTPUT})
message(STATUS "Found CUDA ${CUDA_VERSION}")
set(CUDA_VERSION_MAJOR ${CMAKE_MATCH_1})
#set(CUDA_VERSION_MINOR ${CMAKE_MATCH_2})
#set(CUDA_VERSION_PATCH ${CMAKE_MATCH_3})
if (CUDA_VERSION_MAJOR LESS 9)
message(FATAL_ERROR "CUDA ${CUDA_VERSION} but ${CUDA_REQUIRED_VERSION} is required. Please download and install a more recent version of CUDA from:"
"\n https://developer.nvidia.com/cuda-downloads\n")
endif()
SET(VCPKG_POLICY_EMPTY_PACKAGE enabled)
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