<div dir="ltr">Issue created:<div><a href="https://gitlab.kitware.com/cmake/cmake/issues/16430">https://gitlab.kitware.com/cmake/cmake/issues/16430</a><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Nov 15, 2016 at 3:47 AM, Mueller-Roemer, Johannes Sebastian <span dir="ltr"><<a href="mailto:Johannes.Sebastian.Mueller-Roemer@igd.fraunhofer.de" target="_blank">Johannes.Sebastian.Mueller-Roemer@igd.fraunhofer.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="DE" link="blue" vlink="purple">
<div class="m_-4837305278110040114WordSection1">
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">I agree that CMake should not be defining _DEBUG explicitly, as it is used by Microsoft’s headers to match the chosen
runtime.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Maybe this warrants a bug report on gitlab.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> CMake [mailto:<a href="mailto:cmake-bounces@cmake.org" target="_blank">cmake-bounces@cmake.<wbr>org</a>]
<b>On Behalf Of </b>Kim Kryger<br>
<b>Sent:</b> Monday, November 14, 2016 22:05<br>
<b>To:</b> Stephan Menzel <<a href="mailto:stephan.menzel@gmail.com" target="_blank">stephan.menzel@gmail.com</a>><br>
<b>Cc:</b> cmake <<a href="mailto:cmake@cmake.org" target="_blank">cmake@cmake.org</a>><br>
<b>Subject:</b> Re: [CMake] Force MSVC runtime for debug builds<u></u><u></u></span></p><div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">I ran into this today. I tried to use /MD to link against a custom md library, but because _DEBUG was defined *by CMake* I couldn't use it out of the box.<u></u><u></u></p>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Why is CMake defining _DEBUG for MSVC projects anyways? _DEBUG is automatically defined when using /MDd, and I don't believe it should be defining it itself. I've had to remove it for multiple projects because it's making assumptions as
to what I want defined.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Default for CMAKE_CXX_FLAGS_DEBUG_INIT<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Courier New"">/D_DEBUG /MDd /Zi /Ob0 /Od /RTC1</span><u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">I don't think that first define should be there. </span><u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Reference: </span><u></u><u></u></p>
</div>
<p class="MsoNormal"><a href="https://github.com/Kitware/CMake/blob/5d29506811c5b75ae48e12de6c317f6440874215/Modules/Platform/Windows-MSVC.cmake#L294" target="_blank">https://github.com/Kitware/<wbr>CMake/blob/<wbr>5d29506811c5b75ae48e12de6c317f<wbr>6440874215/Modules/Platform/<wbr>Windows-MSVC.cmake#L294</a><u></u><u></u></p>
<div>
<p class="MsoNormal"><a href="https://msdn.microsoft.com/en-us/library/0b98s6w8.aspx" target="_blank">https://msdn.microsoft.com/en-<wbr>us/library/0b98s6w8.aspx</a><u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">On Fri, Nov 11, 2016 at 9:42 AM, Stephan Menzel <<a href="mailto:stephan.menzel@gmail.com" target="_blank">stephan.menzel@gmail.com</a>> wrote:<u></u><u></u></p>
<blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">On Tue, Nov 8, 2016 at 4:21 PM, <<a href="mailto:clinton@elemtech.com" target="_blank">clinton@elemtech.com</a>> wrote:<u></u><u></u></p>
<blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">If you are going to use /MD instead of /MDd, then you probably also need to remove the _DEBUG preprocessor flag.<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">IIRC, I've seen cases where defining _DEBUG includes symbols only defined by the debug runtimes.<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Clint<u></u><u></u></span></p>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">What a surprise. Removing _DEBUG did the trick. I was under the impression _DEBUG only controls Microsoft STL impl's debug iterator stuff but apparently it also makes the resulting exe link with /MD rather than /MDd. Guess that was wrong.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">So yes, problem solved.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Thank you!<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><span style="color:#888888"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="color:#888888">Stephan<u></u><u></u></span></p>
</div>
</div>
<p class="MsoNormal"><br>
--<br>
<br>
Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
<br>
Please keep messages on-topic and check the CMake FAQ at: <a href="http://www.cmake.org/Wiki/CMake_FAQ" target="_blank">
http://www.cmake.org/Wiki/<wbr>CMake_FAQ</a><br>
<br>
Kitware offers various services to support the CMake community. For more information on each offering, please visit:<br>
<br>
CMake Support: <a href="http://cmake.org/cmake/help/support.html" target="_blank">
http://cmake.org/cmake/help/<wbr>support.html</a><br>
CMake Consulting: <a href="http://cmake.org/cmake/help/consulting.html" target="_blank">
http://cmake.org/cmake/help/<wbr>consulting.html</a><br>
CMake Training Courses: <a href="http://cmake.org/cmake/help/training.html" target="_blank">
http://cmake.org/cmake/help/<wbr>training.html</a><br>
<br>
Visit other Kitware open-source projects at <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">
http://www.kitware.com/<wbr>opensource/opensource.html</a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
<a href="http://public.kitware.com/mailman/listinfo/cmake" target="_blank">http://public.kitware.com/<wbr>mailman/listinfo/cmake</a><u></u><u></u></p>
</blockquote>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div></div></div>
</div>
</blockquote></div><br></div>