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<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>The old one was possibly
statically linked. The newer libs are just dynamic lib files.<o:p></o:p></span></font></p>
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style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>Von:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
gdal-dev-bounces@lists.osgeo.org [mailto:gdal-dev-bounces@lists.osgeo.org] <b><span
style='font-weight:bold'>Im Auftrag von </span></b>Chaitanya kumar CH<br>
<b><span style='font-weight:bold'>Gesendet:</span></b> Freitag, 31. Juli 2009
12:53<br>
<b><span style='font-weight:bold'>An:</span></b> ariasgore@gmx.de<br>
<b><span style='font-weight:bold'>Cc:</span></b> <st1:PersonName w:st="on">gdal-dev@lists.osgeo.org</st1:PersonName><br>
<b><span style='font-weight:bold'>Betreff:</span></b> Re: [gdal-dev] PNG usage
issues</span></font><o:p></o:p></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Sam,<br>
<br>
This looks like a PNG issue rather than a GDAL one. FYI, versions of libpng
used are libpng1.2.15 in GDAL1.6 and libpng1.2.35 in GDAL trunk. You may also
want to checkout <a href="http://libpng.org">libpng.org</a><br>
<br>
Best regards,<br>
-- <br>
Chaitanya kumar CH.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Fri, Jul 31, 2009 at 1:42 PM, <<a href="mailto:ariasgore@gmx.de">ariasgore@gmx.de</a>>
wrote:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hello,<br>
<br>
we have been using an old gdal version (1.0.x) with our projects, there was the
png support compiled into the gdal library. Dependency Walker proved there were
global png_* functions in the gdal library (.dll at this point)<br>
<br>
Due to some issues with png I had to update the png format directory and
replaced all old png lib files with new ones (the gdal version remained
unchanged)<br>
but now the compiled lib does not contain any png related functions anymore.<br>
<br>
Same goes for the latest gdal 1.6.x version.<br>
<br>
I was trying to read a png file by including<br>
png/pngdataset.h which is provided by gdal. during compile and link-time this
action fails with unresolved symbol errors (in VC it's LNK2019).<br>
Missing functions are png_create_struct and so on, basically it looks like even
if the nmake.opt should build and include png as internal lib, there are no
functions exported with it.<br>
<br>
nmake and everything else have been left with their default values, so I dont
get, how gdal is supposed to handle png now.<br>
<br>
Thanks<br>
Sam<br>
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