libstdc++ multilib configury broken in CVS head

[Benjamin Kosnik]

>... that with_build_subdir and with_target_subdir are used
>but not defined here.

Ouch. As you can see, I stole the code outright from libiberty/configure.in...

>Comparing with the setup in the working target library
>configure.in files, it would appear that something like
>this should fix the problem:
>
>Index: libstdc++-v3/configure.in
>===================================================================
>RCS file: /cvs/gcc/gcc/libstdc++-v3/configure.in,v
>retrieving revision 1.111
>diff -c -p -r1.111 configure.in
>*** libstdc++-v3/configure.in   16 Dec 2002 19:01:55 -0000      1.111
>--- libstdc++-v3/configure.in   17 Dec 2002 21:02:03 -0000
>*************** chmod +x testsuite_flags
>*** 489,494 ****
>--- 489,496 ----
>  srcdir=${srcdir}
>  host=${host}
>  target=${target}
>+ with_target_subdir=${with_target_subdir}
>+ with_build_subdir=${with_build_subdir}
>  with_multisubdir=${with_multisubdir}
>  ac_configure_args="${multilib_arg} ${ac_configure_args}"
>  CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
>
>I'm currently running a multilibbed bootstrap/regtest on 
>s390x-ibm-linux with this change; OK to commit if this 
>goes through?

Yes, sorry about that.

>B.t.w. I'm unable to regenerate an unchanged libstdc++
>'configure' file.  Which autoconf version was used to
>generate it?  Apparently not the same that is used for
>the rest of gcc (e.g. the --site-file stuff is missing).

I'm using the autoconf 2.13 that ships on RH 7.3

-benjamin