Help with configure

[Perry Smith]

Below is a script I run to try and configure libstdc++.  I run it  
from /dirpath/powerpc-ibm-aix5.3.0.0-freestanding/libstdc++.  The  
source tree is within the gcc-4.0.2 tree.

When config.status calls config-ml.in CXX in config.status is set but  
at the top of config-ml.in it is not set (or set to the empty  
string).  This causes CXX to be set to just " -pthread", " -maix64",  
and " -pthread -maix64" when configure is called for the pthread,  
ppc64, and pthread/ppc64 versions of the library.  The snippet below  
is taken from config.log in the pthread/libstdc directory (I've added  
in a little bit of debugging).

configure:3007: checking for powerpc-ibm-aix5.3.0.0-g++
configure:3014: override by CXX
configure:3034: result:  -pthread
configure:3092: checking for C++ compiler version
configure:3095:  -pthread --version </dev/null >&5
../../../../gcc-4.0.2/libstdc++-v3/configure: line 3096: -pthread:  
command not found
configure:3098: $? = 127

Am I calling the original configure wrong or is this a bug?

Thank you,
Perry Smith
=================== script ====================
#!/usr/local/bin/bash

/bin/pwd
rm -rf *
rm -rf ../pthread
rm -rf ../ppc64

ulimit -S -d unlimited
export CONFIG_SHELL=/usr/local/bin/bash
export SHELL=/usr/local/bin/bash
export MAKE=gmake
/usr/local/bin/bash /usr/local/src/gcc-4.0.2/libstdc++-v3/configure \
	--cache-file=./config.cache \
	--host=powerpc-ibm-aix5.3.0.0 \
	--build=powerpc-ibm-aix5.3.0.0 \
	--enable-multilib \
	-v \
	--disable-nls \
	--with-libiconv-prefix=/usr \
	--with-gcc-version-trigger=/usr/local/src/gcc-4.0.2/gcc/version.c \
	--enable-languages=c,c++ \
	--program-transform-name=s,y,y, \
	--srcdir=../../../gcc-4.0.2/libstdc++-v3 \
	--with-target-subdir=powerpc-ibm-aix5.3.0.0-freestanding \
	--disable-hosted-libstdcxx \
	--disable-sjlj-exceptions 2>&1 | tee C-OUT