On Saturday 01 October 2011 07:03:35, JonY wrote:
> Hi,
> 
> I followed Paolo's suggestion with the os_defines.h trick. I duplicated
> os/mingw32/ to os/mingw32-w64/ for this to work, since there aren't any
> built-in defines to tell the 2 apart unless you include some headers
> like _mingw.h.

Are we really introducing a bunch of duplication between 
os/mingw32/ and os/mingw32-w64/ ?  I didn't see the part that adds the
new dir and does all those copies in the patch; where is it?  Or have
I missed something?  Can't we make configure add
-D__IM_REALLY_W64_YOU_KNOW to CFLAGS instead?  Or come up with a way
to point libstd++ to pick up a new mingw32/os_defines_w64.h file instead
that does:

#include "os_defines.h"
// mingw-w64 should use fully-dynamic-string by default
#ifndef _GLIBCXX_FULLY_DYNAMIC_STRING
#define _GLIBCXX_FULLY_DYNAMIC_STRING 1
#endif

-- 
Pedro Alves

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