external/bsd/am-utils/dist/m4/macros/check_restartable_signal_handler.m4

   1 dnl ######################################################################
   2 dnl check if a system needs to restart its signal handlers
   3 AC_DEFUN([AMU_CHECK_RESTARTABLE_SIGNAL_HANDLER],
   4 [
   5 AC_CACHE_CHECK(if system needs to restart signal handlers,
   6 ac_cv_restartable_signal_handler,
   7 [
   8 # select the correct systems to restart signal handlers
   9 case "${host_os_name}" in
  10         svr3* | svr4* | sysv4* | solaris2* | sunos5* | aoi* | irix* )
  11                         ac_cv_restartable_signal_handler=yes ;;
  12         * )
  13                         ac_cv_restartable_signal_handler=no ;;
  14 esac
  15 ])
  16 # define REINSTALL_SIGNAL_HANDLER if need to
  17 if test "$ac_cv_restartable_signal_handler" = yes
  18 then
  19   AC_DEFINE(REINSTALL_SIGNAL_HANDLER)
  20 fi
  21 ])
  22 dnl ======================================================================