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From:	"John W. Eaton" <jwe AT bevo DOT che DOT wisc DOT edu>
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Date:	Wed, 5 Oct 2005 16:13:11 -0400
To:	Danny Smith <dannysmith AT users DOT sourceforge DOT net>
Cc:	Cygwin <cygwin AT cygwin DOT com>
Subject:	Building libstdc++.dll the easy way
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On  6-Oct-2005, Danny Smith wrote:

| Building  libstdc++.dll  may be a "hard problem" for a mathematician or
| for libtool, but this is how an ordinary  person coud do  it.
| 
| dlltool --output-def libstdc++.def --export-all libstdc++.a
| gcc -shared -olibstdc++.dll -Wl,--out-implib,libstdc++.dll.a \
|     libstdc++.def libstdc++.a
| 
| 
| The main problem after that is in getting rid of the need for auto-import of
| data objects by marking header files appropiately.

The other main problem after that is that the C++ ABI has been
changing, so having only one version of the library would cause
trouble.  But maybe that is not as big a problem now as it was in the
past?  OTOH, surely there will be some changes to the library in the
future, so it seems that it would be a good idea to be able to have
multiple versions of libstdc++.dll.a installed simultaneously?  Or is
this not possible for some reason?

jwe

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