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<p class="MsoNormal"><span lang="FR-CA" style="mso-fareast-language:EN-US">Chris,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">We are fixing the issues :-) clang-cl doesn’t currently support /MP which makes building of each project single-threaded with MSBuild. I have a patch ongoing here:
</span><a href="https://reviews.llvm.org/D52193">https://reviews.llvm.org/D52193</a> – I am working on it since last week to iron out the last issues, I’ll update it soon.<o:p></o:p></p>
<p class="MsoNormal">Without that you have to resort to increasing the “maximum number of parallel builds” to a higher value than the default 2.<span style="mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="FR">De :</span></b><span lang="FR"> Chris Tetreault <ctetreau@quicinc.com>
<br>
<b>Envoyé :</b> April 10, 2020 6:36 PM<br>
<b>À :</b> Alexandre Ganea <alexandre.ganea@ubisoft.com>; Sudhindra kulkarni <sudhindrakkulkarni102@gmail.com><br>
<b>Cc :</b> LLVM Dev <llvm-dev@lists.llvm.org><br>
<b>Objet :</b> RE: [llvm-dev] Running clang tests<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> I’d just like to interject to say that building within Visual Studio isn’t really that bad. Running the lit tests is a bit painful because the LLVM build tools that are integrated with the build system don’t play nice
with msbuild. Particularly, I’ve never been able to actually cancel an invocation of lit or tablegen via visual studio. That said, there is a huge upside to building with Visual Studio: actually being able to use the debugger.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> Honestly, I find this “just use ninja” attitude frustrating and troubling. If there are pain points with using MSVC or make or whatever, we should be trying to fix then, not just throwing our hands up in the air giving
up. In my opinion, most of the issues surrounding using make or msbuild stem from the fact that nobody is using these build systems, so nobody is fixing the issues. I feel that we should be encouraging people to use the build system that they prefer, and encouraging
people to fix the build system to work well with their chosen build system. This is the only way that things will get better.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> Sudhindra, to answer your question, I would also recommend upgrading to Visual Studio 2019 if you can. I just tried to directly run ASTMatcherTests from Visual Studio 2019 and it worked for me. I have no experience
with the GTest IDE plugin, I’ve always just ran GTest binaries directly. There’s also a check-clang (I think that’s the one you want. It might be called something else but it’s definitely there) target in there that is equivalent to the Ninja check-clang target.
These check targets are weird because to run them you have to do “build” from Visual Studio. If you try to actually run the target it won’t work. This is one of those things that would probably get fixed if people actually used the LLVM Visual Studio project.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> Christopher Tetreault<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> llvm-dev <<a href="mailto:llvm-dev-bounces@lists.llvm.org">llvm-dev-bounces@lists.llvm.org</a>>
<b>On Behalf Of </b>Alexandre Ganea via llvm-dev<br>
<b>Sent:</b> Friday, April 10, 2020 1:35 PM<br>
<b>To:</b> Sudhindra kulkarni <<a href="mailto:sudhindrakkulkarni102@gmail.com">sudhindrakkulkarni102@gmail.com</a>>; LLVM Dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>><br>
<b>Subject:</b> [EXT] Re: [llvm-dev] Running clang tests<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal">Hi,<br>
<br>
LLVM requires Visual Studio 2017 or 2019: <span lang="EN-US"><a href="https://llvm.org/docs/GettingStartedVS.html#software"><span lang="EN-CA">https://llvm.org/docs/GettingStartedVS.html#software</span></a></span> – you could use Community 2019.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I don’t recommend building LLVM inside Visual Studio. However you can generate or update the VS solution once in a while:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3">mkdir buildVS && cd buildVS<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo3">cmake {your_llvm_root}/llvm -G"Visual Studio 16 2019" -Thost=x64 -DLLVM_ENABLE_PROJECTS=clang;llvm -DLLVM_OPTIMIZED_TABLEGEN=ON<o:p></o:p></li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Use Ninja instead for building: <span lang="EN-US"><a href="https://ninja-build.org/"><span lang="EN-CA">https://ninja-build.org/</span></a></span> it’s a lot faster - keep Visual Studio only for debugging.<o:p></o:p></p>
<p class="MsoNormal">Ensure ninja.exe is in %PATH%.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">From a Visual Studio shell (“x64 Native Tools Command Prompt for VS 2019” in the Start menu) run the following:<o:p></o:p></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l1 level1 lfo6">mkdir buildNinjaRel && cd buildNinjaRel<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l1 level1 lfo6">cmake {your_llvm_root}/llvm -G"Ninja" -DLLVM_ENABLE_PROJECTS=clang;llvm -DCMAKE_BUILD_TYPE=RelWithDebInfo -DLLVM_OPTIMIZED_TABLEGEN=ON<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l1 level1 lfo6">ninja check-all<o:p></o:p></li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">You can then debug the test in VS: {your_llvm_root}\buildNinjaRel\tools\clang\unittests\ASTMatchers\ASTMatchersTests.exe<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
Then re-run “ninja check-clang-unit” or just “ninja” if you want to iterate on code changes.<br>
<br>
Best,<br>
Alex.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span lang="FR">De :</span></b><span lang="FR"> llvm-dev <</span><span lang="EN-US"><a href="mailto:llvm-dev-bounces@lists.llvm.org"><span lang="FR">llvm-dev-bounces@lists.llvm.org</span></a></span><span lang="FR">>
<b>De la part de</b> Sudhindra kulkarni via llvm-dev<br>
<b>Envoyé :</b> April 10, 2020 6:42 AM<br>
<b>À :</b> </span><span lang="EN-US"><a href="mailto:llvm-dev@lists.llvm.org"><span lang="FR">llvm-dev@lists.llvm.org</span></a></span><span lang="FR"><br>
<b>Objet :</b> [llvm-dev] Running clang tests<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA"><o:p> </o:p></span></p>
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<p class="MsoNormal">Hi Team,<o:p></o:p></p>
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<p class="MsoNormal"> I have checked out the clang and llvm source code and built the executables using the visual studio 2015 community edition. I am using Windows as my platform.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">However I see that there are some test cases under the clang test folder in the LLVM.sln. Eg AstMatcherTest,ASTTests etc. I see that these tests make use of the Google test framework. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">In my visual studio I have installed Google Test Adapter extension for running the Google tests.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">But the tests under <span style="font-family:"Arial",sans-serif">AstMatcherTest,ASTTests projects won't show up in the Test Explorer view in visual studio even after building these projects.So I wanted to know the reason for the same. </span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">So can you please let me know if it possible to run these tests in visual studio. If not how to run them.</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Thanks in advance.</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Thanks and Regards </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Sudhindra Kulkarni </span><o:p></o:p></p>
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