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  __type_traits/is_trivially_assignable.h
  __type_traits/is_trivially_constructible.h
  __type_traits/is_trivially_copy_assignable.h
  __type_traits/is_trivially_copy_constructible.h
  __type_traits/is_trivially_copyable.h
  __type_traits/is_trivially_default_constructible.h
  __type_traits/is_trivially_destructible.h
  __type_traits/is_trivially_move_assignable.h
  __type_traits/is_trivially_move_constructible.h
  __type_traits/is_unbounded_array.h
  __type_traits/is_union.h
  __type_traits/is_unsigned.h
  __type_traits/is_unsigned_integer.h
  __type_traits/is_valid_expansion.h
  __type_traits/is_void.h
  __type_traits/is_volatile.h
  __type_traits/lazy.h
  __type_traits/make_32_64_or_128_bit.h
  __type_traits/make_const_lvalue_ref.h
  __type_traits/make_signed.h
  __type_traits/make_unsigned.h
  __type_traits/maybe_const.h
  __type_traits/nat.h
  __type_traits/negation.h
  __type_traits/noexcept_move_assign_container.h
  __type_traits/promote.h
  __type_traits/rank.h
  __type_traits/remove_all_extents.h
  __type_traits/remove_const.h
  __type_traits/remove_const_ref.h
  __type_traits/remove_cv.h
  __type_traits/remove_cvref.h
  __type_traits/remove_extent.h
  __type_traits/remove_pointer.h
  __type_traits/remove_reference.h
  __type_traits/remove_volatile.h
  __type_traits/result_of.h
  __type_traits/strip_signature.h
  __type_traits/type_identity.h
  __type_traits/type_list.h
  __type_traits/underlying_type.h
  __type_traits/void_t.h
  __undef_macros
  __utility/as_const.h
  __utility/auto_cast.h
  __utility/cmp.h
  __utility/convert_to_integral.h
  __utility/declval.h
  __utility/exchange.h
  __utility/forward.h
  __utility/forward_like.h
  __utility/in_place.h
  __utility/integer_sequence.h
  __utility/move.h
  __utility/pair.h
  __utility/piecewise_construct.h
  __utility/priority_tag.h
  __utility/rel_ops.h
  __utility/swap.h
  __utility/to_underlying.h
  __utility/transaction.h
  __utility/unreachable.h
  __variant/monostate.h
  __verbose_abort
  algorithm
  any
  array
  atomic
  barrier
  bit
  bitset
  cassert
  ccomplex
  cctype
  cerrno
  cfenv
  cfloat
  charconv
  chrono
  cinttypes
  ciso646
  climits
  clocale
  cmath
  codecvt
  compare
  complex
  complex.h
  concepts
  condition_variable
  coroutine
  csetjmp
  csignal
  cstdarg
  cstdbool
  cstddef
  cstdint
  cstdio
  cstdlib
  cstring
  ctgmath
  ctime
  ctype.h
  cuchar
  cwchar
  cwctype
  deque
  errno.h
  exception
  execution
  expected
  experimental/__config
  experimental/__memory
  experimental/algorithm
  experimental/coroutine
  experimental/deque
  experimental/forward_list
  experimental/functional
  experimental/iterator
  experimental/list
  experimental/map
  experimental/memory_resource
  experimental/propagate_const
  experimental/regex
  experimental/set
  experimental/simd
  experimental/string
  experimental/type_traits
  experimental/unordered_map
  experimental/unordered_set
  experimental/utility
  experimental/vector
  ext/__hash
  ext/hash_map
  ext/hash_set
  fenv.h
  filesystem
  float.h
  format
  forward_list
  fstream
  functional
  future
  initializer_list
  inttypes.h
  iomanip
  ios
  iosfwd
  iostream
  istream
  iterator
  latch
  libcxx.imp
  limits
  limits.h
  list
  locale
  locale.h
  map
  math.h
  memory
  memory_resource
  mutex
  new
  numbers
  numeric
  optional
  ostream
  queue
  random
  ranges
  ratio
  regex
  scoped_allocator
  semaphore
  set
  setjmp.h
  shared_mutex
  source_location
  span
  sstream
  stack
  stdatomic.h
  stdbool.h
  stddef.h
  stdexcept
  stdint.h
  stdio.h
  stdlib.h
  streambuf
  string
  string.h
  string_view
  strstream
  system_error
  tgmath.h
  thread
  tuple
  type_traits
  typeindex
  typeinfo
  uchar.h
  unordered_map
  unordered_set
  utility
  valarray
  variant
  vector
  version
  wchar.h
  wctype.h
  )

foreach(feature LIBCXX_ENABLE_FILESYSTEM LIBCXX_ENABLE_LOCALIZATION LIBCXX_ENABLE_FSTREAM LIBCXX_ENABLE_THREADS LIBCXX_ENABLE_WIDE_CHARACTERS)
  if (NOT ${${feature}})
    set(requires_${feature} "requires LIBCXX_CONFIGURED_WITHOUT_SUPPORT_FOR_THIS_HEADER")
  endif()
endforeach()

configure_file("__config_site.in" "${LIBCXX_GENERATED_INCLUDE_TARGET_DIR}/__config_site" @ONLY)
configure_file("module.modulemap.in" "${LIBCXX_GENERATED_INCLUDE_DIR}/module.modulemap" @ONLY)

set(_all_includes "${LIBCXX_GENERATED_INCLUDE_TARGET_DIR}/__config_site"
                  "${LIBCXX_GENERATED_INCLUDE_DIR}/module.modulemap")
foreach(f ${files})
  set(src "${CMAKE_CURRENT_SOURCE_DIR}/${f}")
  set(dst "${LIBCXX_GENERATED_INCLUDE_DIR}/${f}")
  add_custom_command(OUTPUT ${dst}
    DEPENDS ${src}
    COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst}
    COMMENT "Copying CXX header ${f}")
  list(APPEND _all_includes "${dst}")
endforeach()

add_custom_target(generate-cxx-headers ALL DEPENDS ${_all_includes})

add_library(cxx-headers INTERFACE)
target_link_libraries(cxx-headers INTERFACE libcxx-abi-headers)
add_dependencies(cxx-headers generate-cxx-headers)
target_include_directories(cxx-headers INTERFACE ${LIBCXX_GENERATED_INCLUDE_DIR}
                                                 ${LIBCXX_GENERATED_INCLUDE_TARGET_DIR})

if (LIBCXX_INSTALL_HEADERS)
  foreach(file ${files})
    get_filename_component(dir ${file} DIRECTORY)
    install(FILES ${file}
      DESTINATION "${LIBCXX_INSTALL_INCLUDE_DIR}/${dir}"
      COMPONENT cxx-headers
      PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
    )
  endforeach()

  # Install the generated __config_site and the generated modulemap file.
  install(FILES "${LIBCXX_GENERATED_INCLUDE_TARGET_DIR}/__config_site"
                "${LIBCXX_GENERATED_INCLUDE_DIR}/module.modulemap"
    DESTINATION "${LIBCXX_INSTALL_INCLUDE_TARGET_DIR}"
    PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
    COMPONENT cxx-headers)

  if (NOT CMAKE_CONFIGURATION_TYPES)
    add_custom_target(install-cxx-headers
                      DEPENDS cxx-headers
                      COMMAND "${CMAKE_COMMAND}"
                              -DCMAKE_INSTALL_COMPONENT=cxx-headers
                              -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
    # Stripping is a no-op for headers
    add_custom_target(install-cxx-headers-stripped DEPENDS install-cxx-headers)
  endif()
endif()