OS/2: command-line length limit (was: Enhanced OS/2 port)

[Ralf Wildenhues]

Hello again,

* KO Myung-Hun wrote on Sun, Nov 28, 2010 at 07:20:32AM CET:
> --- libltdl/m4/libtool.m4.org 2010-09-22 17:41:18.000000000 +0900
> +++ libltdl/m4/libtool.m4     2010-11-27 16:03:50.000000000 +0900
> @@ -1624,6 +1624,9 @@
>        lt_cv_sys_max_cmd_len=32768
>      fi
>      ;;
> +  os2*)
> +    lt_cv_sys_max_cmd_len=-1
> +    ;;
>    *)
>      lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
>      if test -n "$lt_cv_sys_max_cmd_len"; then

Is there really no maximum for the command line length on OS/2?
That would be really surprising to me, on a system which limits
it DLL basenames to 8 characters.  ;-)
But if it is so, then the patch is obviously ok.

Or did you do this in order to avoid an expensive check?
What does the check do without the above change?  Does it finish?
Does the machine hang or need a reboot?

I couldn't find good information about this issue on the net.

Thanks,
Ralf