conflicts with -march= switch

[ng@piments.com]

Hi again.

using 1.6.0 I get some odd messages about "-march= switch"


[WARN ]    /back/ts/ct-ng/targets/src/gcc-4.3.4/gcc/gcc.c:2990: warning: 
format not a string literal and no format arguments
[WARN ]  Saving state to restart at step 'libc_headers'...
[WARN ]    configure: WARNING: you should use --build, --host, --target
[WARN ]    configure: WARNING: In the future, Autoconf will not detect 
cross-tools
[WARN ]    *** WARNING: Are you sure you do not want to use the `nptl'
[WARN ]  Saving state to restart at step 'libc_start_files'...
[WARN ]    Removing "-pipe" for use with glibc>=2.6
[WARN ]    configure: WARNING: In the future, Autoconf will not detect 
cross-tools
[WARN ]    checking whether ranlib is necessary... conftest.c:1: 
warning: switch -mcpu=ep9312 conflicts with -march= switch

It's only a warning but if there is a conflict it needs to be resolved: 
which value is taking precendence in this "conflict"?

I did not set switch so I'm not clear where this came from . why is 
there a problem specifying a the cpu when using ct-ng?

thanks.

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