message: filter out xlinker flags from mfem config file
diff: @@ -110,6 +110,12 @@ else()
  string(FIND "${mfem_tpl_lnk_flags}" "\n" mfem_tpl_lnl_flags_end_pos )
  string(SUBSTRING "${mfem_tpl_lnk_flags}" 0 ${mfem_tpl_lnl_flags_end_pos} mfem_tpl_lnk_flags)
  string(STRIP "${mfem_tpl_lnk_flags}" mfem_tpl_lnk_flags)
  +
  + # filter out items containing "Xlinker"
  + set(_mfem_tpl_list ${mfem_tpl_lnk_flags})
  + separate_arguments(_mfem_tpl_list)
  + list(FILTER _mfem_tpl_list EXCLUDE REGEX Xlinker)
  + list(JOIN _mfem_tpl_list " " mfem_tpl_lnk_flags)
  else()
  message(WARNING "No third party library flags found in ${MFEM_CFG_DIR}/config.mk")
  endif()
  