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Re: [v3] use AM_ICONV

I haven't really been following the iconv discussion.  What is the
current status?  I get a failure when building a cross-compiler:

checking for iconv... configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES.
make: *** [configure-target-libstdc++-v3] Error 1

The problem is simply that config/iconv.m4 tries to do link tests to
determine where it can pick up iconv (AM_ICONV calls AM_ICONV_LINK
calls AC_TRY_LINK).  The libstdc++-v3 configury isn't permitted to do
link tests when building a cross-compiler.

I see some iconv related patches, but they don't seem to address this
issue.  Probably I've missed it somewhere.  Is there a fix in train
for this?

Thanks.

Ian
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