message: [CMake] We only want to copy the headers for macOS.
  <rdar://problem/55916729>
diff: @@ -83,11 +83,13 @@ add_dependencies(liblldb liblldb-resource-headers)
  # At build time, copy the staged headers into the framework bundle (and do
  # some post-processing in-place).
  +if (NOT IOS)
  add_custom_command(TARGET liblldb POST_BUILD
  COMMAND ${CMAKE_COMMAND} -E copy_directory ${lldb_header_staging} $<TARGET_FILE_DIR:liblldb>/Headers
  COMMAND ${LLDB_SOURCE_DIR}/scripts/framework-header-fix.sh $<TARGET_FILE_DIR:liblldb>/Headers ${LLDB_VERSION}
  COMMENT "LLDB.framework: copy framework headers"
  )
  +endif()
  # Copy vendor-specific headers from clang (without staging).
  if(NOT IOS)
  