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Date:	Thu, 25 Jun 2009 23:06:01 +0100
From:	Dave Korn <dave DOT korn DOT cygwin AT googlemail DOT com>
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Subject:	Re: How to build gcc to support wchar_t and wstring on Cygwin
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Mark J. Reed wrote:
> On Thu, Jun 25, 2009 at 1:10 PM, Match Point
>> wstring is not supported on my Cygwin 1.5.25. When I  declare a
>> wstring variable my g++ 3.4.4 complains wstring is undeclared. After
>> reading some posted message I figured out wstring is not supported on
>> Cygwin 1.5 or even 1.7. To fix this I have to rebuild entire gcc.
> 
> No, to fix that you have to convince the newlib developers to add
> wstring support to newlib.
> 
>> _GLIBCXX_USE_WCHAR_T is still not defined.
> 
> Cygwin does not use glibc.

  Whoah!  Hang on there!  Cygwin does indeed use newlib, not glibc; but
GLIBCXX_ #defines in GCC don't relate to glibc, they relate to libstdc++-v3.

    cheers,
      DaveK


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