Problem building cross-compiler for AIX 6.1

[John M Collins <jmc@xxxxxxxx>]

Please CC me as I'm not subscribed thanks

I am trying to build a cross-compiler with gcc-4.7.0 from Ubuntu Linux
to AIX6.1

I have build the binutils (2.22) OK

I have copied the include files and /usr/lib contents from AIX6.1 to
/home/crossenv/powerpc-ibm-aix6.1/include and .../lib

I am running:

../gcc-4.7.0/configure --target=powerpc-ibm-aix6.1
--prefix=/home/crossenv --disable-nls --enable-languages=c,c++
make all-gcc
make install-gcc
make all-target-libgcc

However it gets as far as the following on the last step

/bin/bash ../../../../gcc-4.7.0/libgcc/../mkinstalldirs
../../.././gcc/pthread
/usr/bin/install -c -m 644 libgcc_eh.a ../../.././gcc/pthread/
chmod 644 ../../.././gcc/pthread/libgcc_eh.a
/home/crossenv/powerpc-ibm-aix6.1/bin/ranlib
../../.././gcc/pthread/libgcc_eh.a
/bin/bash ../../../../gcc-4.7.0/libgcc/../mkinstalldirs
../../.././gcc/pthread; /usr/bin/install -c -m 644 pthread/libgcc_s.a
../../.././gcc/pthread/
/usr/bin/install: cannot stat `pthread/libgcc_s.a': No such file or
directory

I don't need threads straightaway, can I bypass this just to get off the
ground?

Thanks for any help people can give.

-- 
John Collins