[PATCH] test for libiconv in configure

[Gabriel Dos Reis]

David Edelsohn <dje@watson.ibm.com> writes:

| >>>>> Gabriel Dos Reis writes:
| 
| > David Edelsohn <dje@watson.ibm.com> writes:
| > | 	* acinclude.m4 (GLIBCPP_CHECK_WCHAR_T_SUPPORT): Add test
| > | 	for libiconv.a
| 
| Gabriel> Where is this used?  And what happens if not found.  Please don't
| Gabriel> hesitate to be descriptive.  Thanks.
| 
| 	On AIX, libiconv.a provides iconv(), iconv_open(), and
| iconv_close() used by wchar_t support.  If the library is not referenced,
| the functions are not found and libstdc++ does not correctly handle
| wchar_t support on AIX.

OK.  Please, could you update your ChangeLog entry to reflect the logic
of the patch?  After that minor change, you can check it in.

-- Gaby
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