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

GRASS GIS GRASS GIS developer
,
1

OK, compiling GDAL with Xerces-C and Expat works, with
some minor tweaks.

1. MinGW's Win32 API (3.11) collides with a function definition in
GDAL. Just move it out of the way:

Open ogr/ogrsf_frmts/ili/iom/iom_utilities.cpp and rename the _searchenv
() function so it does not collide with MinGW's own version. Change the
line (ca. 67):

static void _searchenv(const char *name, const char *envname, char *hitfile)

to:

static void _searchenv2(const char *name, const char *envname, char *hitfile)

2. As Marco suspected, libexpat.dll.a needs to be
present in /usr/lib (or wherever you keep your MinGW
libs), so not a good idea to delete it.
(still have to find my way out of the DLL hell ...)

Now I would like to work on the SWIG Python and Perl bindings
for GDAL. Does anyone have experience with those on MinGW?

Best,

Benjamin

marco.pasetti@alice.it wrote:

Hi Benjamin,

I'm afraid that you're doing that work right now, and not a week before :slight_smile:
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

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 :wink:

Marco

------------------------------------------------------------------------
*Da:* grass-dev-bounces@lists.osgeo.org per conto di
benjamin.ducke@ufg.uni-kiel.de
*Inviato:* mar 04/03/2008 14.41
*A:* grass-dev@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
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