# Build-wrapper empty for c++ on linux **URL:** \ **Category:** SonarQube Server / Community Build\ **Tags:** build-wrapper, sonarqube, cfamily, scanner\ **Created:** [June 28, 2020, 4:26pm UTC](https://community.sonarsource.com/t/build-wrapper-empty-for-c-on-linux/27210 "2020-06-28T16:26:40Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![binie](https://dub1.discourse-cdn.com/sonarsource/user_avatar/community.sonarsource.com/binie/32/12919_2.png) [@binie](https://community.sonarsource.com/u/binie)\ **Post date:** [June 28, 2020, 4:26pm UTC](https://community.sonarsource.com/t/build-wrapper-empty-for-c-on-linux/27210/1 "2020-06-28T16:26:40Z")
Hi, I have been struggling with this. I have the following versions - build-wrapper-linux-x86 - build-wrapper, version 6.9 (linux-x86) - Ubuntu 18.04 - sonarqube-developer-8.3.1.34397 - SonarScanner 4.3.0.2102 - Java 11.0.3 AdoptOpenJDK (64-bit) I have run the following to compile, but still leaves build-wrapper-dump.json empty \*\*build-wrapper-linux-x86-64 --out-dir /opt/builddir sudo ./autogen.sh \*\* * * * \*\* 161 mkdir build\*\* \*\* 162 cd build\*\* \*\* 163 build-wrapper-linux-x86-64 --out-dir /opt/builddir sudo …/configure\*\* \*\* 164 build-wrapper-linux-x86-64 --out-dir /opt/builddir sudo make clean all\*\* \*\* 165 build-wrapper-linux-x86-64 --out-dir /opt/builddir sudo make check\*\* Excerpts from build-wrapper.log Sun Jun 28 16:59:44 2020: executable: \ Sun Jun 28 16:59:44 2020: argv[0]: Sun Jun 28 16:59:44 2020: argv[1]: \<-c\> Sun Jun 28 16:59:44 2020: argv[2]: \<\> Sun Jun 28 16:59:44 2020: argv[3]: Sun Jun 28 16:59:44 2020: argv[4]: Sun Jun 28 16:59:44 2020: argv[5]: Sun Jun 28 16:59:44 2020: skipping process with pid: 24904 Sun Jun 28 17:00:10 2020: finalizing json file Sun Jun 28 17:00:10 2020: returned with code: 2 I have checked settings, permissions. My trial license will expire soon and need to ensure I can get this working and desired results are achieved before we purchase. ---
**Author:** ![Abbas](https://dub1.discourse-cdn.com/sonarsource/user_avatar/community.sonarsource.com/abbas/32/5717_2.png) [@Abbas](https://community.sonarsource.com/u/Abbas)\ **Post date:** [June 29, 2020, 8:00am UTC](https://community.sonarsource.com/t/build-wrapper-empty-for-c-on-linux/27210/2 "2020-06-29T08:00:40Z")
Hello @binie, First, you only have to call build-wrapper once with the build command instead of 3 times. Second, sudo shouldn’t be passed to build-wrapper. So following the build commands that you provided it should be something like that: > sudo ./autogen.sh > mkdir build > cd build > sudo `../configure` > sudo build-wrapper-linux-x86-64 --out-dir /opt/builddir make clean all > sudo make check If this still fails please can you upload the full build-wrapper log file directly after executing these commands? ---
**Author:** ![binie](https://dub1.discourse-cdn.com/sonarsource/user_avatar/community.sonarsource.com/binie/32/12919_2.png) [@binie](https://community.sonarsource.com/u/binie)\ **Post date:** [June 29, 2020, 12:17pm UTC](https://community.sonarsource.com/t/build-wrapper-empty-for-c-on-linux/27210/3 "2020-06-29T12:17:11Z")
many thanks @Abbas. The build-wrapper file gets created but is still empty. I do notice that one of the functional test fails when I do a make check. Will this affect data being written to build-wrapper. I am trying to get the developers to look at this. [build-wrapperlog.txt](https://community.sonarsource.com/uploads/short-url/gzXPMLtmg9UNVdhD8pLWrldURJl.txt) (4.6 KB) in addition, the following command comes back with an unknown command - sudo build-wrapper-linux-x86-64 --out-dir /opt/builddir make clean all I have to run it as build-wrapper-linux-x86-64 --out-dir /opt/builddir sudo make clean all ---
**Author:** ![Abbas](https://dub1.discourse-cdn.com/sonarsource/user_avatar/community.sonarsource.com/abbas/32/5717_2.png) [@Abbas](https://community.sonarsource.com/u/Abbas)\ **Post date:** [June 29, 2020, 6:03pm UTC](https://community.sonarsource.com/t/build-wrapper-empty-for-c-on-linux/27210/6 "2020-06-29T18:03:22Z")
@binie, you cannot pass `sudo` to build-wrapper. Do you really need `sudo` to build your project? try `build-wrapper-linux-x86-64 --out-dir /opt/builddir make clean all` ---
**Author:** ![binie](https://dub1.discourse-cdn.com/sonarsource/user_avatar/community.sonarsource.com/binie/32/12919_2.png) [@binie](https://community.sonarsource.com/u/binie)\ **Post date:** [June 29, 2020, 7:39pm UTC](https://community.sonarsource.com/t/build-wrapper-empty-for-c-on-linux/27210/7 "2020-06-29T19:39:11Z")
😊 looks like that has fixed it. Thanks a lot. I have started the scan now; I’ll keep you updated. Many thanks for your help @Abbas ---
**Author:** ![binie](https://dub1.discourse-cdn.com/sonarsource/user_avatar/community.sonarsource.com/binie/32/12919_2.png) [@binie](https://community.sonarsource.com/u/binie)\ **Post date:** [June 29, 2020, 8:13pm UTC](https://community.sonarsource.com/t/build-wrapper-empty-for-c-on-linux/27210/8 "2020-06-29T20:13:33Z")
@Abbas Thanks for all your help; I was able to get this to scan same code on ubuntu 18.04 and 20.04. We’ll move on to the next phase of getting justification 👋🏽 💪🏽 ---
**Author:** ![system](https://dub1.discourse-cdn.com/sonarsource/user_avatar/community.sonarsource.com/system/32/31083_2.png) [@system](https://community.sonarsource.com/u/system)\ **Post date:** [July 6, 2020, 8:14pm UTC](https://community.sonarsource.com/t/build-wrapper-empty-for-c-on-linux/27210/9 "2020-07-06T20:14:28Z")
Closed on July 6, 2020, 8:14pm UTC This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.