share/cmake-3.18/Modules/MacroAddFileDependencies.cmake

# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.

#[=======================================================================[.rst:
MacroAddFileDependencies
------------------------

MACRO_ADD_FILE_DEPENDENCIES(<_file> depend_files...)

Using the macro MACRO_ADD_FILE_DEPENDENCIES() is discouraged.  There
are usually better ways to specify the correct dependencies.

MACRO_ADD_FILE_DEPENDENCIES(<_file> depend_files...) is just a
convenience wrapper around the OBJECT_DEPENDS source file property.
You can just use set_property(SOURCE <file> APPEND PROPERTY
OBJECT_DEPENDS depend_files) instead.
#]=======================================================================]

macro (MACRO_ADD_FILE_DEPENDENCIES _file)

  get_source_file_property(_deps ${_file} OBJECT_DEPENDS)
  if (_deps)
    set(_deps ${_deps} ${ARGN})
  else ()
    set(_deps ${ARGN})
  endif ()

  set_source_files_properties(${_file} PROPERTIES OBJECT_DEPENDS "${_deps}")

endmacro ()