<div dir="ltr">The ios build of VTK starts at the top where it sets up subdirectories and then recursively calls cmake on VTK for those subdirectories with specific options. So the return at the top is correct. When the build process is building the subdirectories it will process that same file with different settings where it will get to those later if statements.<div><br></div><div>Also you can look at <br></div><div><br></div><div><a href="https://open.cdash.org/viewNotes.php?buildid=4909344">https://open.cdash.org/viewNotes.php?buildid=4909344</a></div><div><br></div><div>which shows how the nightly dashboard is setup for iOS.<br><div><br></div><div><br></div></div><div>Hope that helps! <br></div><div>Ken</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, May 23, 2017 at 3:38 PM, Brooksby, Glen W (GE Global Research, US) <span dir="ltr"><<a href="mailto:brooksby@ge.com" target="_blank">brooksby@ge.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div class="m_-700701361661895800WordSection1">
<p class="MsoNormal">I’m attempting to build VTK (v7.1.1) for iOS and I’ve run into problems. In looking at the top level CMakeLists.txt file I see a stanza that says:<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">option(VTK_IOS_BUILD "Build vtk.framework for iOS" OFF)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">if (VTK_IOS_BUILD)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> include(vtkiOS)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> return()<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">endif()<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">The only instructions I see for building VTK for iOS are <a href="https://blog.kitware.com/building-vtk-for-mobile-architectures/" target="_blank">
here</a>. These instructions say to set <span style="font-family:"Courier New"">VTK_IOS_BUILD=ON</span> and a few other variables.<u></u><u></u></p>
<p class="MsoNormal">However, if <span style="font-family:"Courier New"">VTK_IOS_BUILD=ON</span>, the stanza above causes CMake to “return”, or quit processing the top-level CMakeLists.txt file. Yet further down in the same CMakeLists.txt file I see:<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span class="m_-700701361661895800pl-k"><span style="font-family:"Courier New"">if</span></span><span style="font-family:"Courier New""> (ANDROID
<span class="m_-700701361661895800pl-k">OR</span> APPLE_IOS)</span> …<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">and <u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span class="m_-700701361661895800pl-k"><span style="font-family:"Courier New"">if</span></span><span style="font-family:"Courier New""> (APPLE_IOS)</span>…<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">These two conditionals seem to be targeting iOS, but will never be reached if
<span style="font-family:"Courier New"">VTK_IOS_BUILD=ON</span>. I see nowhere where
<span style="font-family:"Courier New"">APPLE_IOS</span> is set, nor instructions to set it.
<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">For my case I changed the first stanza to:<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">option(VTK_IOS_BUILD "Build vtk.framework for iOS" OFF)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">if (VTK_IOS_BUILD)<u></u><u></u></span></p>
<p class="MsoNormal" style="text-indent:13.5pt"><span style="font-family:"Courier New"">include(vtkiOS)<u></u><u></u></span></p>
<p class="MsoNormal" style="text-indent:13.5pt"><span style="font-family:"Courier New"">SET (APPLE_IOS 1)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""> #return()<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">endif()<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Configure, generate, and the build seems to get much further, but the build still breaks when building for the simulator (in vtkGL2PSExporter.cxx because it’s not finding vtk_gl2ps.h).<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">A framework is produced, but it appears to be incomplete. Specifically, vtkInteractorStyleMultiTouchCa<wbr>mera.h is not included, which may be caused by
<span style="font-family:"Courier New"">APPLE_IOS</span> being set. Because of this the iOS example GLPaint cannot be built.
<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Is there anyone who is having success building VTK 7.1.1 for iOS who can shed some light on this or provide more thorough instructions? Would a different version have more success? A VTK Framework does appear to have been produced.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">For reference I’m building VTK 7.1.1, using CMake version 3.8.0. I’m building on a Macbook air running MacOS 10.12.4 (Sierra), with Xcode 8.3.1.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thanks,<span class="HOEnZb"><font color="#888888"><u></u><u></u></font></span></p><span class="HOEnZb"><font color="#888888">
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Glen Brooksby<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Ken Martin PhD<div>Distinguished Engineer<br><span style="font-size:12.8px">Kitware Inc.</span><br></div><div>28 Corporate Drive<br>Clifton Park NY 12065<br><div><br></div><div><span style="font-size:10pt;font-family:Tahoma,sans-serif">This communication,
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