GCC multilib building failure

[Xiaolong Tang]

Hi, I got the problem fixed by upgrading the developing tool for  
MAC.  (simply upgrading xcode...)
Then the assembler for x86_64 becomes ready.

However,  I got new errors reported during building libstdc++v3.  
(shown below)
I am googling for its resolution.
If anyone feeds me any advice, great appreciation!

-----------------------------------------------------------
appending configuration tag "CXX" to libtool
checking for exception model to use... configure: error: unable to  
detect exception model
make[1]: *** [configure-target-libstdc++-v3] Error 1
make: *** [all] Error 2
-------------------------------------

thanks
-xlong


On Jun 14, 2007, at 2:52 PM, Xiaolong Tang wrote:

> hello all,
>
> I recently built my conceptgcc but failed when my built gcc tried  
> to build multilib.
> I post it here because the problem seems to be more related with  
> the general gcc.
>
>
> The message is as below:
> -----------------------------------
>
>
> # If this is the top-level multilib, build all the other
> # multilibs.
> /usr/bin/as: assembler (/usr/libexec/gcc/darwin/x86_64/as or /usr/ 
> local/libexec/gcc/darwin/x86_64/as) for architecture x86_64 not  
> installed
> Installed assemblers are:
> /usr/libexec/gcc/darwin/ppc64/as for architecture ppc64
> /usr/libexec/gcc/darwin/ppc/as for architecture ppc
> /usr/libexec/gcc/darwin/i386/as for architecture i386
> /usr/local/libexec/gcc/darwin/m68k/as for architecture m68k
> /usr/local/libexec/gcc/darwin/hppa/as for architecture hppa
> /usr/local/libexec/gcc/darwin/sparc/as for architecture sparc
> /usr/local/libexec/gcc/darwin/m88k/as for architecture m88k
> /usr/local/libexec/gcc/darwin/i860/as for architecture i860
> In file included from /usr/include/sys/_types.h:26,
>                  from /usr/include/_types.h:27,
>                  from /usr/include/stdio.h:64,
>                  from ../../../../xiaolong/gcc/libgcc/../gcc/ 
> tsystem.h:90,
>                  from ../../../../xiaolong/gcc/libgcc/../gcc/ 
> libgcc2.c:33:
> /usr/include/sys/cdefs.h:335:4: error: #error Unknown architecture
> In file included from /usr/include/sys/_types.h:27,
>                  from /usr/include/_types.h:27,
>                  from /usr/include/stdio.h:64,
>                  from ../../../../xiaolong/gcc/libgcc/../gcc/ 
> tsystem.h:90,
>                  from ../../../../xiaolong/gcc/libgcc/../gcc/ 
> libgcc2.c:33:
> /usr/include/machine/_types.h:30:2: error: #error architecture not  
> supported
> In file included from /usr/include/_types.h:27,