if (NOT LIBCXX_INSTALL_SUPPORT_HEADERS)
  set(LIBCXX_SUPPORT_HEADER_PATTERN PATTERN "support" EXCLUDE)
endif()

install(DIRECTORY .
  DESTINATION include/c++/v1
  FILES_MATCHING
  PATTERN "*"
  PATTERN "CMakeLists.txt" EXCLUDE
  PATTERN ".svn" EXCLUDE
  ${LIBCXX_SUPPORT_HEADER_PATTERN}
  PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
  )

if (NOT LIBCXX_INSTALL_SUPPORT_HEADERS)
  set(LIBCXX_SUPPORT_HEADER_PATTERN PATTERN "support" EXCLUDE)
endif()
set(LIBCXX_HEADER_PATTERN
  PATTERN "*"
  PATTERN "CMakeLists.txt" EXCLUDE
  PATTERN ".svn" EXCLUDE
  ${LIBCXX_SUPPORT_HEADER_PATTERN}
  )

file(COPY .
  DESTINATION "${CMAKE_BINARY_DIR}/include/c++/v1"
  FILES_MATCHING
  ${LIBCXX_HEADER_PATTERN}
  )

install(DIRECTORY .
  DESTINATION include/c++/v1
  FILES_MATCHING
  ${LIBCXX_HEADER_PATTERN}
  PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
  )

Make headers available in the build directory
Make headers available in the build directory

This essentially re-does r194825 and makes it possible to run clang
with libc++ without having to install it, even if you don't have any
version of libc++ installed in /usr/.

This behaviour broke in r210577/r211629, which fixed pr18681.

git-svn-id: 756ef344af921d95d562d9e9f9389127a89a6314@220489 91177308-0d34-0410-b5e6-96231b3b80d8
