message: build(winpack_dldt): avoid stale sysroot contents
diff: @@ -189,7 +189,10 @@ class BuilderDLDT:
  if self.srcdir is None:
  self.srcdir = prepare_dir(self.outdir / 'sources', clean=clean_src_dir)
  self.build_dir = prepare_dir(self.outdir / 'build', clean=self.config.clean_dldt)
  - self.sysrootdir = prepare_dir(self.outdir / 'sysroot', clean=self.config.clean_dldt)
  + self.sysrootdir = prepare_dir(self.outdir / 'sysroot', clean=self.config.clean_dldt or self.config.clean_dldt_sysroot)
  + if not (self.config.clean_dldt or self.config.clean_dldt_sysroot):
  + _ = prepare_dir(self.sysrootdir / 'bin', clean=True) # always clean sysroot/bin (package files)
  + _ = prepare_dir(self.sysrootdir / 'etc', clean=True) # always clean sysroot/etc (package files)
  if self.config.build_subst_drive:
  if os.path.exists(self.config.build_subst_drive + ':\\'):
  @@ -483,8 +486,9 @@ def main():
  parser.add_argument('--cmake_option', action='append', help='Append OpenCV CMake option')
  parser.add_argument('--cmake_option_dldt', action='append', help='Append CMake option for DLDT project')
  - parser.add_argument('--clean_dldt', action='store_true', help='Clear DLDT build and sysroot directories')
  - parser.add_argument('--clean_opencv', action='store_true', help='Clear OpenCV build directory')
  + parser.add_argument('--clean_dldt', action='store_true', help='Clean DLDT build and sysroot directories')
  + parser.add_argument('--clean_dldt_sysroot', action='store_true', help='Clean DLDT sysroot directories')
  + parser.add_argument('--clean_opencv', action='store_true', help='Clean OpenCV build directory')
  parser.add_argument('--build_debug', action='store_true', help='Build debug binaries')
  parser.add_argument('--build_tests', action='store_true', help='Build OpenCV tests')
  