[Gdal-dev] Xerces versions?

[Frank Warmerdam]

On 8/10/05, Michael P. Gerlek <mpg at lizardtech.com> wrote:
> The nmake.opt file implies that that the GML support in OGR requires
> Xerces version 1.7:
> 
>   #XERCES_DIR = d:\warmerda\iii\drivers\gml\xerces-c1_7_0-win32
>   #XERCES_INCLUDE = -I$(XERCES_DIR)/include
> -I$(XERCES_DIR)/include/xercesc
>   #XERCES_LIB = $(XERCES_DIR)/lib/xerces-c_1.lib
> 
> We're already using xerces 2.6 internally, but if I try to use that
> instead of 1.7 I get linker errors of the form:
> 
>    gdal.lib(gmlreader.obj) : error LNK2019: unresolved external symbol
> "__declspec(dllimport) public: __thiscall
> xercesc_2_6::XMLPScanToken::XMLPScanToken(void)"
> (__imp_??0XMLPScanToken at xercesc_2_6@@QAE at XZ) referenced in function
> "public: __thiscall GMLReader::GMLReader(void)" (??0GMLReader@@QAE at XZ)
>    gdal.lib(gmlreader.obj) : error LNK2019: unresolved external symbol
> "__declspec(dllimport) public: __thiscall
> xercesc_2_6::XMLPScanToken::~XMLPScanToken(void)"
> (__imp_??1XMLPScanToken at xercesc_2_6@@QAE at XZ) referenced in function
> "public: virtual __thiscall GMLReader::~GMLReader(void)"
> (??1GMLReader@@UAE at XZ)
>    [...]
>    gdal.lib(gmlhandler.obj) : error LNK2019: unresolved external symbol
> "__declspec(dllimport) public: virtual __thiscall
> xercesc_2_6::DefaultHandler::~DefaultHandler(void)"
> (__imp_??1DefaultHandler at xercesc_2_6@@UAE at XZ) referenced in function
> "public: virtual __thiscall GMLHandler::~GMLHandler(void)"
> (??1GMLHandler@@UAE at XZ)
> 
> I'm not sure I understand this.  I could understand the link reasonably
> failing with 2.6, but these specific errors seem appear to imply
> something missing from the 2.6 library itself.  Weird.  (I did verify
> that if I use the 1.7 libs all is well, so I don't *think* it is
> anything local to my build environment.)

Michael,

I just tried a build with Xerces 2.6 on win32, and had no problem.
This was with the pre-built msvc6 binaries from the Xerces web site.#
Uncomment for Xerces based GML support.  My nmake.opt entries looked
like:

XERCES_DIR =	c:\warmerda\supportlibs\xerces-c_2_6_0
XERCES_INCLUDE = -I$(XERCES_DIR)/include -I$(XERCES_DIR)/include/xercesc
XERCES_LIB = $(XERCES_DIR)/lib/xerces-c_2.lib

I'm not sure why you are running into problems.

Best regards,
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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and watch the world go round - Rush    | Geospatial Programmer for Rent