sonar-cxx: To scan 'C/C++' code using the cxx plugin, do we need to compile the code using build_wrapper before running sonar-scanner?

[Ashokg6]

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Describe the bug
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To Reproduce
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4. See error

Expected behavior
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Desktop (please complete the following information):

• OS: Redhat 8.10
• SonarQube version: Community Edition v9.9.7
• cxx plugin version: 2.1.3 (build 851)
• sonar-scanner version: sonar-scanner-4.8.1.3023-linux

Additional context
My goal is to run the static analysis of 'C/C++' code using the above combination.
My question here is, to run static analysis of C/C++ code using the sonar-cxx plugin, do I need to compile the code by using "build-wrapper-linux-x86-64 --out-dir build_wrapper_output_directory make" ? if yes do i need to add these flags - sonar.cxx.build-wrapper-output=bld/build_wrapper_output_directory , sonar.cxx.jsonCompilationDatabase=bld/build_wrapper_output_directory/compile_commands.json to add preprocessors, macros and include directories ?

OR )
This plugin only supports and only on static files, which does not require any compilation before scanning. ? If yes
In this case, how it will include/parse preprocessors, macros and include directories ?

I did not get any relevant document which can clarify these questions, so I'm requesting you to clarify it .

BR
Ashok G

[guwirth]

Hello @Ashokg6,

please have first a look to our Wiki to understand the basics.

This plugin only supports and only on static files, which does not require any compilation before scanning. ?

• https://github.com/SonarOpenCommunity/sonar-cxx/wiki/Scan-Source-Code
• https://github.com/SonarOpenCommunity/sonar-cxx/wiki/Scan-Report-Files
• https://github.com/SonarOpenCommunity/sonar-cxx/wiki/CXX-Analysis-Parameters

In this case, how it will include/parse preprocessors, macros and include directories ?

• https://github.com/SonarOpenCommunity/sonar-cxx/wiki/Detect-and-fix-parsing-errors

Regards,

[Ashokg6]

Hi @guwirth,

Thanks for the info shared, let me go throw it .

BR
Ashok G

[Ashokg6]

Hi @guwirth ,

I tried with the JsonCompilationsDatabase and manual insertion of include directories without compilation, but I'm getting below errors while parsing the include directories .
JsoncompilationDatabase:
I have generated the compilation database by running below third party tool and input that in sonar-project.properties file and ran scan as shown below .
wrapper command - build-wrapper-linux-x86-64 --out-dir build_wrapper_output_directory make clean all
file has created with the required data and input this into scanner
sonar-scanner -Dsonar.cxx.jsonCompilationDatabase=bld/build_wrapper_output_directory/compile_commands.json
error :
ERROR: preprocessor: /home/jenkins/workspace/fi_master_sonar/fi/bld/cloud/artefacts/vendorsrc/broadcom/sdk-xgs-robo-6.5.x/sdk-all-6.5.24/bmacsec/cli '/home/jenkins/workspace/fi_master_sonar/fi/bld/cloud/artefacts/vendorsrc/broadcom/sdk-xgs-robo-6.5.x/sdk-all-6.5.24/bmacsec/cli'
ERROR: preprocessor: /home/jenkins/workspace/fi_master_sonar/fi/bld/cloud/artefacts/vendorsrc/broadcom/sdk-xgs-robo-6.5.x/sdk-all-6.5.24/bmacsec/phy/bcm54380 '/home/jenkins/workspace/fi_master_sonar/fi/bld/cloud/artefacts/vendorsrc/broadcom/sdk-xgs-robo-6.5.x/sdk-all-6.5.24/bmacsec/phy/bcm54380'
ERROR: preprocessor: /home/jenkins/workspace/fi_master_sonar/fi/bld/cloud/artefacts/vendorsrc/broadcom/sdk-xgs-robo-6.5.x/sdk-all-6.5.24/bmacsec/phy/bcm8729 '/home/jenkins/workspace/fi_master_sonar/fi/bld/cloud/artefacts/vendorsrc/broadcom/sdk-xgs-robo-6.5.x/sdk-all-6.5.24/bmacsec/phy/bcm8729'
ERROR: preprocessor: /home/jenkins/workspace/fi_master_sonar/fi/bld/cloud/artefacts/vendorsrc/broadcom/sdk-xgs-robo-6.5.x/sdk-all-6.5.24/bmacsec/phy/bcm84756 '/home/jenkins/workspace/fi_master_sonar/fi/bld/cloud/artefacts/vendorsrc/broadcom/sdk-xgs-robo-6.5.x/sdk-all-6.5.24/bmacsec/phy/bcm84756'

Manually Included the included directories where I got the below error .
sonar-scanner -Dsonar.cxx.includeDirectories=bld/TNTO/Router/,pi/l2/common/inc,pi/l2/erlb/inc
Errors
preprocessor: undefined function-like macro 'KERNEL_VERSION' assuming 0
preprocessor: undefined function-like macro '__GNUC_PREREQ' assuming 0

Can you please guide me or share some clues why this parser errors are coming even I'm passing correct values as expected ?

BR
Ashok G