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<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Hi Siddharth,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language: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<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><a href="https://github.com/Ericsson/clang">https://github.com/Ericsson/clang</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">(ctu-clang5 branch)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">please use the following llvm commit revision to compile clang:<o:p></o:p></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">657c31173ea30090583e40c7a9204561d9c2d8c4<o:p></o:p></span></code></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">when you compiled clang successfully you should have a “clang-func-mapping” binary in the <build_dir>/bin directory.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Then create a codechecker package as described here<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><a href="https://github.com/Ericsson/codechecker#linux">https://github.com/Ericsson/codechecker#linux</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Add <LLVM_BUILD_DIR>/bin to your path e.g.: export PATH=<LLVM_BUILD_DIR>/bin:$PATH
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">so CodeChecker will find this new CTU patched version of clang.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">If all went fine you start CodeChecker analyze –help and it will print:
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">cross translation unit analysis arguments:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> These arguments are only available if the Clang Static Analyzer supports<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> Cross-TU analysis. By default, no CTU analysis is ran when 'CodeChecker<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> analyze' is called.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> --ctu, --ctu-all Perform Cross Translation Unit (CTU) analysis, both<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> 'collect' and 'analyze' phases. In this mode, the<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> extra files created by 'collect' are cleaned up after<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> the analysis.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> --ctu-collect Perform the first, 'collect' phase of Cross-TU<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> analysis. This phase generates extra files needed by<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> CTU analysis, and puts them into '<OUTPUT_DIR>/ctu-<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> dir'. NOTE: If this argument is present, CodeChecker<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> will NOT execute the analyzers!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> --ctu-analyze Perform the second, 'analyze' phase of Cross-TU<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> analysis, using already available extra files in<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> '<OUTPUT_DIR>/ctu-dir'. (These files will not be<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> cleaned up in this mode.)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> --ctu-on-the-fly If specified, the 'collect' phase will not create the<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> extra AST dumps, but rather analysis will be ran with<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"> an in-memory recompilation of the source files.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Then you can say to analyze your code:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">CodeChecker log -b “make” -o compilation.json<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">CodeChecker analyze compilation.json –ctu-all -o reports<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">then print the reports<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">CodeChecker parse ./reports<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">(For more howto see:
<a href="https://github.com/Ericsson/codechecker/blob/master/docs/usage.md">https://github.com/Ericsson/codechecker/blob/master/docs/usage.md</a>)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">I hope this helps.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Daniel<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> cfe-dev [mailto:cfe-dev-bounces@lists.llvm.org]
<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 <cfe-dev@lists.llvm.org><br>
<b>Subject:</b> [cfe-dev] Cross translational unit analysis in codechecker<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></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><o:p></o:p></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/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><o:p></o:p></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><o:p></o:p></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><o:p></o:p></p>
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