[GRASS-dev] WinGRASS: Xerces-C and Expat under MingW

[benjamin.ducke at ufg.uni-kiel.de]

marco.pasetti at alice.it wrote:
> Hi Benjamin,
>
> I'm afraid that you're doing that work right now, and not a week before :-)
> because I just released a new MSYS GRASS environment, while it would be
> perfect to also add Xerces and Expat support to both GDAL and GRASS
> (only Xerces)
> it will be on the next time

That's OK, there are plenty more things that need further work, anyway.

>
> anyway I'm not sure about Expat; did you read this?
> http://trac.osgeo.org/gdal/wiki/BuildingWithMinGW
>
> the libexpat.dll.a is the import static library used while building the
> shared one; it is used (with the -lexpat.dll istruction) while building
> executables
> but I hope to fail and you're right ;-)

Welcome to Windows' "DLL hell". You would not believe the mess that
shared libraries are under Win32. Apparently, symbols to be used at
linking tine can be included in the actual DLL or an external library
file, the format of which depends on the C compiler. So you have .dll,
.dll.a, .lib, .a, .la, .lai files floating around ...

As far as I can see, in the case of Expat, all necessary symbols
are in expat-1.dll. At least the little test program I compiled worked
alright with it.

If anything comes up, I will report it to the list.

Best,

Benjamin

>
> Marco
>
> ------------------------------------------------------------------------
> *Da:* grass-dev-bounces at lists.osgeo.org per conto di
> benjamin.ducke at ufg.uni-kiel.de
> *Inviato:* mar 04/03/2008 14.41
> *A:* grass-dev at lists.osgeo.org
> *Oggetto:* Re: R: [GRASS-dev] WinGRASS: Xerces-C and Expat under MingW
>
> ... and on to Expat:
> that one is very simple to fix. After the "make install", just
> stay in the Expat source dir and do:
>
>         rm /usr/lib/libexpat.dll.a
>
>         install .libs/libexpat-1.dll /usr/lib/libexpat.dll
>
> (that's assuming you have Expat installed in /usr/lib,
> of course).
>
> I have not actually tried compiling the whole of GDAL with
> Xerces-C and Expat support yet, only got the configure
> script to run through.
>
> So there might be more trouble waiting ...
>
> Best,
>
> Benjamin
>
>
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-- 
Benjamin Ducke
Senior Applications Support and Development Officer

Oxford Archaeological Unit Limited
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OX2 0ES
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Tel.: ++44 (0)1865 263 800
benjamin.ducke at oxfordarch.co.uk