<div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Jun 2, 2014 at 2:34 PM, Bradley Lowekamp <span dir="ltr"><<a href="mailto:blowekamp@mail.nih.gov" target="_blank">blowekamp@mail.nih.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Hello,<div><br></div><div>As the symbols in the ITK library are not managled. So if you try to use the a system expat in conjunction with the ITK expat you could have conflicting symbols and undefined behavior. Simply installing the header in a different location will not solve this problem.</div>
<div><br></div><div>Configuring ITK to use a system expat will fully solve you problem.</div><div><br></div><div>You can find how other third party libraries did it here:</div><div><br></div><div><a href="https://github.com/InsightSoftwareConsortium/ITK/blob/master/Modules/ThirdParty/JPEG/CMakeLists.txt" target="_blank">https://github.com/InsightSoftwareConsortium/ITK/blob/master/Modules/ThirdParty/JPEG/CMakeLists.txt</a></div>
<div><a href="https://github.com/InsightSoftwareConsortium/ITK/blob/master/Modules/ThirdParty/TIFF/CMakeLists.txt" target="_blank">https://github.com/InsightSoftwareConsortium/ITK/blob/master/Modules/ThirdParty/TIFF/CMakeLists.txt</a></div>
<div><br></div><div>Would you like to try to create a patch to address this issue?</div></div></blockquote><div><br></div><div>Yes. I would like to try a patch</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word"><div><br></div><div>Thanks,</div><div>Brad</div><div><div><div><br><div><div>On Jun 2, 2014, at 8:22 AM, Rashad M <<a href="mailto:mohammedrashadkm@gmail.com" target="_blank">mohammedrashadkm@gmail.com</a>> wrote:</div>
<br><blockquote type="cite"><div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Jun 2, 2014 at 2:07 PM, Bradley Lowekamp <span dir="ltr"><<a href="mailto:blowekamp@mail.nih.gov" target="_blank">blowekamp@mail.nih.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div style="word-wrap:break-word">Hello,<div><br></div><div>
It would be quite reasonable to support using a system expact.</div>
<div><br></div><div>Could you please describe you problem a little clearer? Are you having problem compiling ITK? or an Application which uses ITK? or Issues compiling independent programs after ITK is installed?</div></div>
</blockquote><div><br></div><div>My problem not with compiling/installing ITK but when compiling libkml, a dependency of OTB which uses ITK. This uses an expat library and instead of using a system expat i wind up using expat from ITK as expat.h is installed in <prefix>/include/ITK4.6. I can confirm using system expat doesnt have any problem with libkml when used with OTB. </div>
<div><br></div><div>If you would like to have a look at bug report, see here[1]. I had a temporary solution to build libkml before adding itk headers but a best would be to have a fix in ITK' expat library.</div><div>
<br></div><div>The issue is coming using an installed version of ITK. </div><div>So if you are planning to upgrade expat library to its latest version or use system expat then the problem is solved. </div><div><br></div>
<div>
[1] <a href="http://bugs.orfeo-toolbox.org/view.php?id=879" target="_blank">http://bugs.orfeo-toolbox.org/view.php?id=879</a></div><div> </div><div><br></div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div style="word-wrap:break-word"><div><br></div>
<div>Thanks,</div><div>Brad</div><div><br><div><div><div>On Jun 1, 2014, at 3:29 AM, Rashad M <<a href="mailto:mohammedrashadkm@gmail.com" target="_blank">mohammedrashadkm@gmail.com</a>> wrote:</div>
<br></div><blockquote type="cite"><div><div dir="ltr">Hi,<div><br></div><div>Is there an option to install expat includes in a different location? For now its installed in <prefix>/include. This seems to be a problem when using a latest expat version and by default ITK's expat is included. </div>
<div><br></div><div>Or if it is possible to use a system expat to make sure that both ITK and other libraries uses same expat (latest version).</div><div><br></div><div>best would be to change location <prefix>/include/expat. So that cmake can be used to remove item from list of include directories.</div>
<div><br></div><div>eg:</div><div>list(REMOVE_ITEM expat-includes itk-includes)<br></div><div><div><br></div>-- <br><div><font face="arial, helvetica, sans-serif">Regards,<br> Rashad</font></div>
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</blockquote></div><br></div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div><font face="arial, helvetica, sans-serif">Regards,<br> Rashad</font></div>
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</blockquote></div><br></div></div></div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div><font face="arial, helvetica, sans-serif">Regards,<br> Rashad</font></div>
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