<div dir="ltr">Thanks Daniel for the info.<div>Siddharth</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Sep 21, 2017 at 10:37 PM, Dániel Krupp <span dir="ltr"><<a href="mailto:daniel.krupp@ericsson.com" target="_blank">daniel.krupp@ericsson.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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<p class="MsoNormal"><span lang="EN-US">Hi Siddharth,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">since the CTU functionality is not yet part of the mainline clang (review ongoing), you will need to clone our patched version of clang5<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><a href="https://github.com/Ericsson/clang" target="_blank">https://github.com/Ericsson/<wbr>clang</a><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">(ctu-clang5 branch)<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">please use the following llvm commit revision to compile clang:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Segoe UI",sans-serif;color:#24292e;background:white">Branch </span><code><span style="font-size:10.0pt;font-family:Consolas;color:#24292e">ctu-clang5</span></code><span style="font-size:12.0pt;font-family:"Segoe UI",sans-serif;color:#24292e;background:white"> ->
LLVM commit </span><code><span style="font-size:10.0pt;font-family:Consolas;color:#24292e">657c31173ea30090583e40c<wbr>7a9204561d9c2d8c4<u></u><u></u></span></code></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">when you compiled clang successfully you should have a “clang-func-mapping” binary in the <build_dir>/bin directory.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Then create a codechecker package as described here<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><a href="https://github.com/Ericsson/codechecker#linux" target="_blank">https://github.com/Ericsson/<wbr>codechecker#linux</a><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Add <LLVM_BUILD_DIR>/bin to your path e.g.: export PATH=<LLVM_BUILD_DIR>/bin:$<wbr>PATH
<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">so CodeChecker will find this new CTU patched version of clang.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">If all went fine you start CodeChecker analyze –help and it will print:
<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">cross translation unit analysis arguments:<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> These arguments are only available if the Clang Static Analyzer supports<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Cross-TU analysis. By default, no CTU analysis is ran when 'CodeChecker<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> analyze' is called.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> --ctu, --ctu-all Perform Cross Translation Unit (CTU) analysis, both<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> 'collect' and 'analyze' phases. In this mode, the<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> extra files created by 'collect' are cleaned up after<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> the analysis.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> --ctu-collect Perform the first, 'collect' phase of Cross-TU<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> analysis. This phase generates extra files needed by<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> CTU analysis, and puts them into '<OUTPUT_DIR>/ctu-<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> dir'. NOTE: If this argument is present, CodeChecker<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> will NOT execute the analyzers!<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> --ctu-analyze Perform the second, 'analyze' phase of Cross-TU<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> analysis, using already available extra files in<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> '<OUTPUT_DIR>/ctu-dir'. (These files will not be<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> cleaned up in this mode.)<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> --ctu-on-the-fly If specified, the 'collect' phase will not create the<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> extra AST dumps, but rather analysis will be ran with<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> an in-memory recompilation of the source files.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Then you can say to analyze your code:<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">CodeChecker log -b “make” -o compilation.json<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">CodeChecker analyze compilation.json –ctu-all -o reports<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">then print the reports<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">CodeChecker parse ./reports<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">(For more howto see:
<a href="https://github.com/Ericsson/codechecker/blob/master/docs/usage.md" target="_blank">https://github.com/Ericsson/<wbr>codechecker/blob/master/docs/<wbr>usage.md</a>)<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">I hope this helps.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Regards,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Daniel<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><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">From:</span></b><span lang="EN-US"> cfe-dev [mailto:<a href="mailto:cfe-dev-bounces@lists.llvm.org" target="_blank">cfe-dev-bounces@lists.<wbr>llvm.org</a>]
<b>On Behalf Of </b>Siddharth Shankar Swain via cfe-dev<br>
<b>Sent:</b> 2017. szeptember 20. 16:17<br>
<b>To:</b> Clang Dev <<a href="mailto:cfe-dev@lists.llvm.org" target="_blank">cfe-dev@lists.llvm.org</a>><br>
<b>Subject:</b> [cfe-dev] Cross translational unit analysis in codechecker<u></u><u></u></span></p><div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Source Sans Pro",sans-serif;color:#333333;background:#e2edff">Hi,
</span><u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Source Sans Pro",sans-serif;color:#333333;background:#e2edff">can anyone tell how to use codechecker
</span><a href="https://github.com/Ericsson/codechecker" target="_blank"><span style="font-size:11.5pt;font-family:"Source Sans Pro",sans-serif;color:#1d40ff;border:none windowtext 1.0pt;padding:0cm;background:#e2edff">https://github.com/Ericsson/<wbr>codechecker</span></a><span style="font-size:11.5pt;font-family:"Source Sans Pro",sans-serif;color:#333333;background:#e2edff"> with
cross translational unit analysis flag for analysis across translational unit ?</span><u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Source Sans Pro",sans-serif;color:#333333;background:#e2edff">Thanks,</span><u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:11.5pt;font-family:"Source Sans Pro",sans-serif;color:#333333;background:#e2edff">Siddharth</span><u></u><u></u></p>
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