CMake/Modules/FindCUDA/make2cmake.cmake

#  For more information, please see: http://software.sci.utah.edu
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#  The MIT License
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#  Copyright (c) 2007
#  Scientific Computing and Imaging Institute, University of Utah
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# Make2cmake CMake Script
# Abe Stephens and James Bigler
# (c) 2007 Scientific Computing and Imaging Institute, University of Utah
# Note that the REGEX expressions may need to be tweaked for different dependency generators.

file(READ ${input_file} depend_text)

if (${depend_text} MATCHES ".+")

  # message("FOUND DEPENDS")

  # Remember, four backslashes is escaped to one backslash in the string.
  string(REGEX REPLACE "\\\\ " " " depend_text ${depend_text})

  # This works for the nvcc -M generated dependency files.
  string(REGEX REPLACE "^.* : " "" depend_text ${depend_text})
  string(REGEX REPLACE "[ \\\\]*\n" ";" depend_text ${depend_text})

  set(dependency_list "")

  foreach(file ${depend_text})

    string(REGEX REPLACE "^ +" "" file ${file})

    if(NOT IS_DIRECTORY ${file})
      # If softlinks start to matter, we should change this to REALPATH.  For now we need
      # to flatten paths, because nvcc can generate stuff like /bin/../include instead of
      # just /include.
      get_filename_component(file_absolute "${file}" ABSOLUTE)
      list(APPEND dependency_list "${file_absolute}")
    endif(NOT IS_DIRECTORY ${file})

  endforeach(file)

else()
  # message("FOUND NO DEPENDS")
endif()

# Remove the duplicate entries and sort them.
list(REMOVE_DUPLICATES dependency_list)
list(SORT dependency_list)

foreach(file ${dependency_list})
  set(cuda_nvcc_depend "${cuda_nvcc_depend} \"${file}\"\n")
endforeach()

file(WRITE ${output_file} "# Generated by: make2cmake.cmake\nSET(CUDA_NVCC_DEPEND\n ${cuda_nvcc_depend})\n\n")